using tostring in csharp

In C#, ToString() is a method that is used to convert an object into its string representation.

The syntax to use ToString() is as follows:

main.cs
object.ToString()
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Or, you can also call the static ToString() method of the Convert class:

main.cs
Convert.ToString(object)
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Here's an example of using ToString() to convert an integer to a string:

main.cs
int num = 42;
string str = num.ToString();

Console.WriteLine(str); // outputs "42"
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You can also customize the format of the resulting string by passing in an appropriate format string as a parameter:

main.cs
int num = 42;
string str = num.ToString("D4"); // formats the number as a 4-digit string with leading zeros

Console.WriteLine(str); // outputs "0042"
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Note that not all objects in C# support the ToString() method, and you may need to override it in your own classes to provide a custom string representation.