Why String Format does not work in c# [closed]

by

Because you test it wrong. In thise 2 lines:

String.Format(test,number);
string res=test;

String.Format returns a string. As can be seen in the documentation And this new string is the composed string with your number that you expect. If you assign the format string test to res and check whether string res has now the desired output. You will (of course) not find it but only

“add number here {0}”;

You need to use the return value of the method String.Format. There you will find the desired output:

string res = String.Format(test,number);
Console.WriteLine(res);

More Related Contents:

  1. Split Double Values?
  2. POST a form array without successful
  3. What does the => operator mean in a property?
  4. Quickest way to convert a base 10 number to any base in .NET?
  5. What is the purpose of a question mark after a type (for example: int? myVariable)?
  6. Parsing large JSON file in .NET
  7. Hosting external app in WPF window
  8. Download image from the site in .NET/C#
  9. Read connection string from web.config
  10. Measuring code execution time
  11. LINQ Grouping dynamically
  12. Reading PDF documents in .Net [closed]
  13. Timeout Pattern – How bad is Thread.Abort really?
  14. Sending email with attachments from C#, attachments arrive as Part 1.2 in Thunderbird
  15. Creating a PDF from a RDLC Report in the Background
  16. Assigning events in object initializer
  17. What does the keyword “new” do to a struct in C#?
  18. ASP.NET Core 3.0 System.Text.Json Camel Case Serialization
  19. Using IsAssignableFrom with ‘open’ generic types
  20. Sending Windows key using SendKeys
  21. Why can’t we assign a foreach iteration variable, whereas we can completely modify it with an accessor?
  22. Declaring a new instance of a class in C#
  23. Reading from Excel (Range into multidimensional Array) C#
  24. Type result with conditional operator in C#
  25. Check if a folder exist in a directory and create them using C#
  26. Using a .NET DLL in Node.js / serverside javascript
  27. How to find out the Encoding of a File? C#
  28. Using a Scoped service in a Singleton in an Asp.Net Core app
  29. What’s the difference between casting an int to a string and the ToString() method in C#
  30. Can I import a static class as a namespace to call its methods without specifying the class name in C#?

Leave a Comment