The following code example creates an OpenFileDialog, sets several properties to define the file extension filter and dialog behavior, and displays the dialog box using the CommonDialog.ShowDialog method. Note: Since a generic class cannot be constrained by an enum I am constraining by struct instead and checking for enum in the constructor. The _.curryRight.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for provided arguments. false : IsNumeric(x.GetType())); ", It would be good if it works. Note: This method doesn't set the "length" property of curried functions. This saved me a lot of time doing a conversion from a bunch of csv files to json. All contents are copyright of their authors. Of course, this wouldn't handle very large integers/long decimals, but if that is the case you just need to add additional calls to long.TryParse / decimal.TryParse / whatever else. You pass it an object and the property path, and it will return the desired value. Comparing Java enum members: == or equals()? There appears to be an issue with where some methods called within the above extension live (see the comments of the original blog post), but it should get you most of the way there. msdn.microsoft.com/en-us/library/x6c1kb0s%28VS.71%29.aspx, adobe.com/livedocs/flex/201/html/wwhelp/wwhimpl/common/html/, Microsoft.VisualBasic.Information.IsNumeric(), https://stackoverflow.com/a/18857243/3195477. A usage example of the enum and it's extension method. Classes in the Windows Runtime don't inherit Object, and don't always implement a ToString. This may be preferable to writing your own, or at least use it as a basis. As several people pointed out, httpValueCollection.ToString() encodes Unicode characters in a non-standards-compliant way. Develop an extension method that returns the result string that you want. It is possible to just convert a enumerator to string using a format like this: You can see all the possible formats in this link: https://learn.microsoft.com/pt-br/dotnet/api/system.string?view=netframework-4.8. Yes, it all depends on the scope of the method I guess. The code for this web service begins with the following: The remainder of the code supplied in this class is used to define the web method used to upload the file; the code is annotated. What does the [Flags] Enum Attribute mean in C#? Being an extension language, Lua has no notion of a "main" program: it only works embedded in a host client, called the embedding program or simply the host. I would avoid using Office.Interop on a CSV file, it would be overkill since CSV is just text. int. Nice! It's always nice to write some text explaining why this should work and why the OP's wasn't. You need to pass your content as string to this method and you can do something like this to read your csv. RFC 6238 HOTPTimeBased May 2011 5.Security Considerations 5.1.General The security and strength of this algorithm depend on the properties of the underlying building block HOTP, which is a construction based on HMAC [] using SHA-1 as the hash function.The conclusion of the security analysis detailed in [] is that, for all practical purposes, the outputs of the dynamic truncation on Rather than rolling your own, the most reliable way to tell if an in-built type is numeric is probably to reference Microsoft.VisualBasic and call Information.IsNumeric(object value). Ready to optimize your JavaScript with Rust? Here's an extension method for removing adjacent duplicates in-situ. The implementation handles a number of subtle cases such as char[] and HEX and OCT strings. The "magic" happens in the Console.WriteLine call in Sub Main(), where the last argument is simply v.Description. Figure 3: Solution Explorer with the both Projects Visible. Installing the MoreLINQ package via Nuget, you can easily distinct object list by a property, If you have tow classes Product and Customer and we want to remove duplicate items from their list, You must define a generic class in the form below. MOSFET is getting very hot at high frequency PWM. [WebServiceBinding(ConformsTo=WsiProfiles.BasicProfile1_1)], FileUploader:System.Web.Services.WebService, //thebytearrayargumentcontainsthecontentofthefile, //thestringargumentcontainsthenameandextension, //storagefolder,usetheoriginalfilename, FileStream(System.Web.Hosting.HostingEnvironment.MapPath, //writethememorystreamcontainingtheoriginal, //fileasabytearraytothefilestream, //returntheerrormessageiftheoperationfails, ///Atestformusedtouploadafilefromawindowsapplicationusing, ///Uploadanyfiletothewebservice;thisfunctionmaybe, ///usedinanyapplicationwhereitisnecessarytoupload, ///
Passthefilepathtoupload. You'll have to provide some other name for your parameterless ToString replacement. The omission of a check for multiple Description attributes is on purpose. Your ToString() override should have no observable side effects to avoid complications in debugging. How were sailing warships maneuvered in battle -- who coordinated the actions of all the sailors? ; Toggle "can call user code" annotations u; Navigate to/from multipage m; Jump to search box / Central limit theorem replacing radical n with n. Mathematica cannot find square roots of some matrices? instead numerationValue.GetType() use: typeof(T). The default Object.ToString() method It's normally much quicker to filter a collection (as both Distinct() and this sample does) than it would be to remove items from it. A string is a sequential collection of characters that's used to represent text. You have several options to produce the result string that you'd like. Examples. The returned string should be as short as possible so that it is suitable for display by a debugger. What's the canonical way to check for type in Python? RFC 6238 HOTPTimeBased May 2011 5.Security Considerations 5.1.General The security and strength of this algorithm depend on the properties of the underlying building block HOTP, which is a construction based on HMAC [] using SHA-1 as the hash function.The conclusion of the security analysis detailed in [] is that, for all practical purposes, the outputs of the dynamic truncation on No scope is created for a hosted service by default. it will perform the conversion. Find centralized, trusted content and collaborate around the technologies you use most. You could also look at regex for a quick rough check. In this article and code sample, I would like to share how to export a DataTable to a Comma Separated File (CSV) format using a C# extension method. nlogn + n + nlogn = n + 2nlogn = O(nlogn) which is pretty nice. The value of the String object is the content of the sequential collection of System.Char objects, and that value is immutable (that is, it is read-only). I wanted to show list of cities in a dropdown which has duplicate values. Why does Google prepend while(1); to their JSON responses? 4.3.31 method; 4.3.32 built-in method; 4.3.33 attribute; 4.3.34 own property; 4.3.35 inherited property; 4.4 Organization of This Specification 5 Notational Conventions 5.1 Syntactic and Lexical Grammars. How would this handle escaped commas within the CSV? LOL, Small variation to the solution by bc3tech i.e. We will also learn how to use an extension method to make code more manageable. 2022 C# Corner. The smallest unit of distribution of functionality in .NET is an assembly which usually corresponds to a single file with the .dll file extension. There is no need for any explicit function call. Can I use a space between two words in enumeration? The most common usage is handling output generated by the Call Sort() first and pass in the same IComparer. Please be aware that reflection may incur performance costs that must be considered. txtFileName.Text=openFileDialog1.FileName; ///Iftheuserhasselectedafile,sendittotheuploadmethod, ///theuploadmethodwillconvertthefiletoabytearrayand, 10 SEO Tips For Technical Writers And Software Developers. It will be as slow as the solution in the first answer by Ray. Are defenders behind an arrow slit attackable? How to convert datatable to json string using json.net? Thank you for your library. Order configuration providers in code to suit the priorities for the underlying configuration sources that the app requires. Note that, when setting up the demo, you will have remove and add the web reference back into the project in order for it to work for you. The returned string should uniquely identify the value of the object instance. Some information relates to prerelease product that may be substantially modified before its released. So hard to keep track. See how APIs, libraries, frameworks, and 3rd party .NET code really work with the leading .NET decompiler - .NET Reflector. This method is like _.curry except that arguments are applied to func in the manner of _.partialRight instead of _.partial. Net 0. The following example calls the overloaded Decimal.ToString(String, IFormatProvider) method to display culture-sensitive formatting of a currency value. You pass it an object and the property path, and it will return the desired value. You guys totally missed the exercise which is to return something other than the default ToString value. I'm trying to make a function that would serialize any object to XML like this: You will simply need to do a type check for each of the basic numeric types. In this part, we are going to add Capture View. and you want to use double.TryParse then you need to use the overload that takes a NumberStyles parameter, and make sure you are using the invariant culture. Overrides of the ToString() method should follow these guidelines: The returned string should be friendly and readable by humans. rev2022.12.11.43106. Japanese girlfriend visiting me in Canada - questions at border control? You could even implement it using specific Enum just by changin the Enum type of the parameter to the Actual Enum on which to use it. See how APIs, libraries, frameworks, and 3rd party .NET code really work with the leading .NET decompiler - .NET Reflector. rev2022.12.11.43106. I am assuming here that you want to return something other than the actual name of the enum value (which you can get by simply calling ToString). If I am not mistaken, most of the approaches mentioned above are just abstractions of this very routines, right? is the null-propagating operator, and will cause the .Invoke() to be short-circuited when the operand is null.The operand is only accessed once, so there is no risk of the "value changes between check and invoke" problem. Does this work for list of list of list items where the item codes are duplicate and needs to get unique list. Another potential problem with this is that you cannot parse the min/max values for double. My "solution" was to combine the accepted answer from Noldorin with the one from Saul Dolgin and add a pattern matching switch before trying to parse anything (and use some C#7 goodness to tidy up a bit): .ToString() would result in a string I was wondering if someone's written a utility to convert a CSV file to Json using C#. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. The web method is setup to return a string; if all goes well, the string returned will read, "OK", if not, the error message encountered will be returned to the caller. Why does the USA not have a constitutional court? @TonyG Fair enough. I combine this with JSON.NET came up with the solution. I would have taken your approach here, Lasse, because its how I mentally picture moving through data. My enum consists of the following values: I want to be able to output these values in a user friendly way though. To learn more, see our tips on writing great answers. In addition to overriding the parameterless Object.ToString() method, many types overload the ToString method to provide versions of the method that accept parameters. Lua is implemented as a library, written in clean C (that is, in the common subset of ANSI C and C++). So, replace the default code of the Main method in the Program.cs file using the following code snippet. :). I think the best (and easiest) way to solve your problem is to write an Extension-Method for your enum: If you want something completely customizable, try out my solution here: http://www.kevinwilliampang.com/post/Mapping-Enums-To-Strings-and-Strings-to-Enums-in-NET.aspx. This is a variant of the same extension method that handles such characters by invoking HttpUtility.UrlEncode method instead of the deprecated HttpUtility.UrlEncodeUnicode method. In this part, we are going to add Capture View. Since. Lots of UI components are expecting to find and use DisplayNameAttribute and DescriptionAttribute. However, they always appear to have ToString, Equals(Object), and GetHashCode methods when you use them in your C# or Visual Basic code, and the .NET Framework provides a default behavior for these methods. The issue I see with this is that you're constantly writing these extension methods. Does aliquot matter for final concentration? Should I exit and re-enter EU with my EU passport or is it ok? Your ToString() override should not return Empty or a null string. It seems I misunderstood you. Configuration sources are read in the order that their configuration providers are specified. aspphpasp.netjavascriptjqueryvbscriptdos avoiding external dependencies (on Newtonsoft.Json), and instead using System.Text.Json (dotnet core 3+), I can see most people simply assume parsing CSV file is to simply split comma delimiter between each column, but the following format is still a valid CSV. It's a mystery as to why this comment isn't the accepted one, or most upvoted - no reflection, no unnecessary attributes, ideal for simple situations where the enum is already nicely named. There appears to be an issue with where some methods called within the above extension live (see the comments of the original blog post), but it should get you most of the way there. Generally, a download manager enables downloading of large files or multiples files in one session. The solution contains two projects; one is an ASP.NET Web Service project (Uploader) and the other is a Win Forms test application (TestUploader) used to demonstrate uploading files through the web method provided in the web service project.The web service project contains only a single web service (FileUploader) which in turn contains only a @alfoks: You are absolutely right so I have updated the answer. The node:crypto module provides the Certificate class for working with SPKAC data. is deprecated since HTML 5.2 and new projects should not use this element anymore. I wrote a Tiny Virtual Operating System for a 300-level OS class in C# for college back in 2001 (?) Here's an extension method for removing adjacent duplicates in-situ. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Ready to optimize your JavaScript with Rust? If the enum has two, and you're using to to generate a description, I'd like to think that is an exceptional circumstance. Might be ok for most people but it was a show stopper for me. The simplest way is just to include this extension class into your project, it will work with any enum in the project: You can use Humanizer package with Humanize Enums possiblity. This will exclude some solutions. In this article, I'm going to explain SOLID principles in C# including Single Responsibility Principle (SRP), Open Closed Principle (OSP), Liskov Substitution Principle (LSP), Interface Segregation Principle (ISP), and Dependency Inversion Principle (DIP) Like so: public override bool Equals(object obj){}. Since. After adding a Camera Controller, next, we are going to change the name of the Index action method to capture. Are the S&P 500 and Dow Jones Industrial Average securities? then, You can remove duplicate items in your list. Exchange operator with position and momentum, Irreducible representations of a product of two groups, QGIS Atlas print composer - Several raster in the same layout, Central limit theorem replacing radical n with n. How is Jesus God when he sits at the right hand of the true God? Notice that the Click event handler for the Button control is marked with the async modifier because it calls an asynchronous method.. using System; using Replace "Type" with your desired type e.g. Does illicit payments qualify as transaction costs? The service is registered in IHostBuilder.ConfigureServices (Program.cs) with the AddHostedService extension method: services.AddHostedService(); Consuming a scoped service in a background task. Examples. When you implement your own types, you should override the ToString() method to return values that are meaningful for those types. @jnylen: this answer was quite some time ago. i've been doing that for years. A literal newline may also be included in a string by preceding it with a backslash. The article also addresses the use of a file size check as a precursor to allowing a file to upload through the service. Even more if you have a database to update. I like the version that @RayL linked as it will only add the extension method to Enums. In this case, it would probably just be best to use double.TryParse. It's always difficult being new to a site and learning about its culture and nuances. This method is like _.curry except that arguments are applied to func in the manner of _.partialRight instead of _.partial. But you will have to override the default comparer for your type. A string is a sequential collection of characters that's used to represent text. Call Sort() first and pass in the same IComparer. As several people pointed out, httpValueCollection.ToString() encodes Unicode characters in a non-standards-compliant way. When you implement IEnumerable, you must also implement IEnumerator or, for C# only, you can use the yield keyword. It is also available as Nuget Package.. Its main class is Resolver with its Resolve method. For example, you would specify TypeExtensions for an assembly whose path and name are .\bin\TypeExtensions.dll. If the unused capacity had been less than 10 percent of total capacity, the list would not have been resized. This should be your preferred route to take and should save you from expensive or faulty checks and passing object around. Where does the idea of selling dragon parts come from? For more information on format strings and culture-sensitive formatting, see Formatting Types. After adding a Camera Controller, next, we are going to change the name of the Index action method to capture. It does mean that every enum needs it's own extension method. Is there a C# equivalent to Java's Number class? MY_TYPE will have the underscore and is not customisable. However, trailing zeros might be revealed by the ToString method if an appropriate format string is applied. While writing my own object.IsNumeric() extension method based on Saul Dolgin's answer to this question I ran into a potential issue in that you will get an OverflowException if you try it with double.MaxValue or double.MinValue. The following example implements the ICollection interface to create a collection of custom Box objects named BoxCollection.Each Box has height, length, and width properties, which are used to define equality. Would help if there were an example of how to use a hashset in this particular context. Making statements based on opinion; back them up with references or personal experience. I use the Description attribute from the System.ComponentModel namespace. I have these fields in my list: Id, StoreName, City, PostalCode Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. Runs as a Visual Studio add-in. How to add items in listbox without duplicate Like That : How to extract duplicate value in arraylist in c#, Having Trouble Removing Duplicates From A List. EDIT Here is another SO answer about splitting a CSV line. Should I exit and re-enter EU with my EU passport or is it ok? The value of the String object is the content of the sequential collection of System.Char objects, and that value is immutable (that is, it is read-only). Fair enough. This fails when two headers have the same name or no name, Which version of ChoETL do you use because for me the ChoJSONWriter isnt recognised it causes an error, yes, but SplitQuotedLine - this is a user-defined method which is missing from the blog post. @petar that works but not if you want friendly strings to be displayed to users. Extremely simple to use. See the Notes to Inheritors section for additional information on overriding ToString. So any duplicates will be removed and you're left with a list where every position has a different object. Is there any solution for this. The following example defines a class, Object2, that overrides the ToString method to return the type name along with its value. Alternatively you could copy values to a new array or list. Failing to see why you need it to be generic? This takes distinct (the elements without duplicating elements) and convert it into a list again: Note: This solution requires no knowledge of Linq, aside from that it exists. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Is it possible to force Excel recognize UTF-8 CSV files automatically? 1 Introduction. From a previous question on stackoverflow, I'm aware of this nice utility - https://github.com/cparker15/csv-to-json and at the moment I plan to refer to it but an existing C# implementation would be very helpful! The assembly is available either in the installation folder of the application, or in the GAC (Global assembly cache).Assemblies can be loaded by using the methods of the clr module. Note: This method doesn't set the "length" property of curried functions. How do I make a flat list out of a list of lists? That way I can put my toSTring method in a seperate library, whilst putting the custom string representation with the enum itself Boris Callens. How to check if an object is numeric in C#, Convert object to number type and check value. Dual EU/US Citizen entered EU on US Passport. 4.3.31 method; 4.3.32 built-in method; 4.3.33 attribute; 4.3.34 own property; 4.3.35 inherited property; 4.4 Organization of This Specification 5 Notational Conventions 5.1 Syntactic and Lexical Grammars. You would check if the type implements any concrete INumber interface, by comparing their generic type definitions to the open generic INumber<> type. Derived classes that require more control over formatting than ToString() provides can implement the IFormattable interface. A string that represents the current object. The _.curryRight.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for provided arguments. The extension method seems suited for a common area, and the "localized" definition of the enum now makes the extension method more verbose. After missing a few questions on pluarlsight.com's .net skill assessment I started to realize how in depth C# enum's are, so it's probably a good idea to at least know of their capabilities before deciding which methodology to apply (especially for pervasive usage, refactoring can be a bit of a time;). My work as a freelance was used in a scientific paper, should I be included as an author? ///willacceptthereportandstoreitinthelocalfilesystem. If the unused capacity had been less than 10 percent of total capacity, the list would not have been resized. I recently face the same issue and created this method to overcome. Even Big-O notation won't help you with actual performance metrics, only a growth effect relationship. I don't need to be able to go from string to value again. StringstrFile=System.IO.Path.GetFileName(filename); //getthefileinformationformtheselectedfile, //getthelengthofthefiletoseeifitispossible, //touploadit(withthestandard4MBlimit). You could also put a generic constrain on T to accept only value types. I'm sorry, but thanks for trying to be helpful! Developers typically create Razor components from Razor component files (.razor) or base their components on ComponentBase, but components can also be built by implementing IComponent.Developer-built components that implement IComponent can take low-level control over rendering at the cost of having to manually trigger rendering with events and lifecycle Equality can be defined as all dimensions being the same or the volume being the same. is deprecated since HTML 5.2 and new projects should not use this element anymore. SPKAC is a Certificate Signing Request mechanism originally implemented by Netscape and was specified formally as part of HTML5's keygen element. The value of the String object is the content of the sequential collection of System.Char objects, and that value is immutable (that is, it is read-only). Notice that the Click event handler for the Button control is marked with the async modifier because it calls an asynchronous method.. using System; using To learn more, see our tips on writing great answers. Use ObjectHandle.Unwrap to unwrap the return value. Even without seeing what is going on within that method, it is pretty easy to tell it is just splitting up a string. Any disadvantages of saddle valve for appliance water line? Being an extension language, Lua has no notion of a "main" program: it only works embedded in a host client, called the embedding program or simply the host. If your object is an Int32, Single, Double etc. Many web browsers, such as Internet Explorer 9, include a download manager. Once again, thanks for not dumping on the new guy. Better way to check if an element only exists in one array. If your type implements a parsing method (or Parse or TryParse method, a constructor, or some other static method that instantiates an instance of the type from a string), you should ensure that the string returned by the ToString() method can be converted to an object instance. This is particularly true of arrays and collection classes. That being said, it didn't work if the value contained the line separator but there may be a something to control that too, I just haven't looked for it. There is a nice class hidden within Microsoft.VisualBasic.FileIO to handle CSV file format correctly. The following example demonstrates how to use two FileStream objects to asynchronously copy the files from one directory to another directory. You may have reached this page by following the link from the member list of another type. @DrJokepu - actually I didn't realise that the, @thorn really? The _.curryRight.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for provided arguments. Lua is implemented as a library, written in clean C (that is, in the common subset of ANSI C and C++). The assembly is available either in the installation folder of the application, or in the GAC (Global assembly cache).Assemblies can be loaded by using the methods of the clr module. The code below is annotated to describe the activity but the essential parts of the operation are to check the file size to see if the web service will accept the file (by default, the web server will accept uploads smaller than 4 MB in size, the web config file must be updated in order to support larger uploads), and to convert the file to a byte array. Implementing IEnumerator also requires IDisposable to be implemented, which you will see in Order configuration providers in code to suit the priorities for the underlying configuration sources that the app requires. Jan 26, 2009 at 11:13. In this article and code sample, I would like to share how to export a DataTable to a Comma Separated File (CSV) format using a C# extension method. Better way to check if an element only exists in one array. This is necessary, because Linq commands like Union returns the result as an IEnumerable result instead of modifying the original List or returning a new List. How to get string list of Enum descriptions? Not the answer you're looking for? Trailing zeros do not affect the value of a Decimal number in arithmetic or comparison operations. assemblyName can be either of the following: The simple name of an assembly, without its path or file extension. That way I can put my toSTring method in a seperate library, whilst putting the custom string representation with the enum itself Boris Callens. Developers typically create Razor components from Razor component files (.razor) or base their components on ComponentBase, but components can also be built by implementing IComponent.Developer-built components that implement IComponent can take low-level control over rendering at the cost of having to manually trigger rendering with events and lifecycle Take care when altering the values as Microsoft has established the default 4 MB limit to provide some safety against attempts to upload extremely large files that may hamper access to the server. The Box class implements the IEquatable interface to define the default Overloading the ToString method By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This should give you a simple list of json objects. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Remove duplicates from a List in C#. This should be more efficient than Lasse V. Karlsen's version which calls RemoveAt repeatedly (resulting in multiple block memory moves). and 11MB ram. Adding Capture View. To include Unicode characters using escape sequences, the individual bytes for the UTF-8 encoding must be specified; in general, it will be more straightforward to and you want to use double.TryParse then you need to use the overload that takes a NumberStyles parameter, and make sure you are using the invariant culture. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. and later moved it to VB.NET in 2002.This is all pre-.NET Core, and on early .NET 1.1 or 2.0 on Windows. Note that you can't override the default Object.ToString method in this way (that is, your extension class (in C#) or module (in Visual Basic) cannot have a parameterless method named ToString that is called in place of the original type's ToString method. Just FYI, C# code conventions want local variables and method parameters with lower case initial letter. We will also learn how to use an extension method to make code more manageable. Generally, a download manager enables downloading of large files or multiples files in one session. Remove duplicate from two generic list C#. Instead, it inherits the functionality of the Object.ToString method. Apart from that (if you rename method) it should work. How to detect if a property is numeric type in haxe? 1 Introduction. The TrimExcess method is used to reduce the capacity to match the count, and the Capacity and Count properties are displayed. To use scoped services within a BackgroundService, create a scope. Here is the process of creating a DataTable and exporting its data to a .csv file. How is Jesus God when he sits at the right hand of the true God? If you are looking for a C# only solution this might work for you. Use ObjectHandle.Unwrap to unwrap the return value. Fixed answer. Might be easier to simply make sure that duplicates are not added to the list. Here's mine.. You cannot declare a parameter to be of type IStringable. A Java source file is described as being in Google Style if and only if it adheres to the rules herein.. Like other programming style guides, the issues covered span not only aesthetic issues of formatting, but other types of conventions or By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The following example implements the ICollection interface to create a collection of custom Box objects named BoxCollection.Each Box has height, length, and width properties, which are used to define equality. this code remove duplicate items by Id if you want remove duplicate items by other property, you can change nameof(YourClass.DuplicateProperty) same nameof(Customer.CustomerName) then remove duplicate items by CustomerName Property. Exchange operator with position and momentum. Create Generic method constraining T to an Enum, How to get an enum value from a string value in Java. Ready to optimize your JavaScript with Rust? @pennyrave: Eh. You could use one of the suggested regex solutions to create your own SplitQuotedLine method: How do I autoformat excel cells that contains both strings and numbers? It defines four format strings: G, which returns the model name and year; D, which returns the model name, year, and number of doors; C, which returns the model name, year, and number of cylinders; and A, which returns a string with all four field values. @Noldorin: actually your previous version of the code would work as well; just add a null check and use value.ToString(). There appears to be an issue with where some methods called within the above extension live (see the comments of the original blog post), but it should get you most of the way there. Anyone have a quick method for de-duplicating a generic List in C#? An extension method might be a decent way to go something like this: In Java (I assume C# is more or less identical): If you really wanted to mutate the original list: To preserve order, simply replace HashSet with LinkedHashSet. Now, let's add a View to this Capture action method. But, now I am interested in performance differences between some of the suggestions. Thanks for the positive criticism. Examples. Configuration sources are read in the order that their configuration providers are specified. The _.curryRight.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for provided arguments. The node:crypto module provides the Certificate class for working with SPKAC data. See my updated answer. EDIT Here is another SO answer about splitting a CSV line. dLen=Convert.ToDouble(fInfo.Length/1000000); //setupafilestreamandbinaryreaderforthe, //passthebytearray(file)andfilenametothewebservice. From C# 6 onwards, you can just use: MyEvent?.Invoke(); or: obj?.SomeMethod(); The ?. Loading .NET assemblies. If the class is not sealed (in C#) or NotInheritable (in Visual Basic), you can develop a wrapper class that inherits from the base class whose Object.ToString method you want to customize. Overriding the Object.ToString() method is the null-propagating operator, and will cause the .Invoke() to be short-circuited when the operand is null.The operand is only accessed once, so there is no risk of the "value changes between check and invoke" problem. As several people pointed out, httpValueCollection.ToString() encodes Unicode characters in a non-standards-compliant way. Of course using [Description("")] is a way to go. If the string representation of an instance is culture-sensitive or can be formatted in multiple ways, implement the IFormattable interface. This document serves as the complete definition of Google's coding standards for source code in the Java Programming Language. Remarks. Counterexamples to differentiation under integral sign, revisited, What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked. While the Attribute way is more generic, your solution is more localized.. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. The following table lists the type categories in .NET and indicates whether or not they override the Object.ToString method. Since. The web service project contains only a single web service (FileUploader) which in turn contains only a single Web Method (UploadFile). Types frequently override the Object.ToString method to provide a more suitable string representation of a particular type. If your CSV file has duplicate column names or no names, please use the below steps to produce the JSON file, Sample fiddle: https://dotnetfiddle.net/pP5Du6. CGAC2022 Day 10: Help Santa sort presents! In case of a variable assignment to a string, ToString() does the work: And if it is about to insert spaces between words of a CamelCase string, you can just use a regular expression: Just use a static class that simulate an enum: And to access the values, just use like an enum: I use a generic class to store the enum/description pairs and a nested helper class to get the description. It seems that it is missing. There is a sample further down that does that with this library but I used the sample above and changed ".WithFirstLineHeader()" to ".WithFirstLineHeader().QuoteAllFields()" and it worked perfectly for my test data. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Loading .NET assemblies. This method is like _.curry except that arguments are applied to func in the manner of _.partialRight instead of _.partial. Notice that the Click event handler for the Button control is marked with the async modifier because it calls an asynchronous method.. using System; using and later moved it to VB.NET in 2002.This is all pre-.NET Core, and on early .NET 1.1 or 2.0 on Windows. I'm 7 years late for the party :-) But I'm sure this topic is visited frequently. Jan 26, 2009 at 11:13. Plus the whole .Id thing becomes distracting and cumbersome. How to override ToString() on enum in C#? A way to salvage this would be to wrap this in a method that yields with an enumerator and only return distinct values. The most common usage is handling output generated by the Actually strings will be parsed, but if not in correct format, FormatException is thrown. Summary Yes, but this would mean that this one extention method should be rewritten every time you introduce a new enum you want to have a friendly name for. 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