C# Equivalent to VB Optional Parameters

Prior to C# 4, C# did not allow optional parameters. Overloaded methods are the only alternative prior to C# 4 to optional parameters (these are inserted into the converted code by Instant C#). A VB method with n optional parameters is converted to n + 1 overloaded methods. The overloaded methods call the overloaded method with the maximum number of parameters (which contains your original method code), passing the default values originally specified for the original optional parameters. If you are using C# 4, Instant C# offers the option of converting to C# optional parameters.

Here's an example of the simplest possible case:

VB:

Public Sub TestOptional(Optional ByVal x As Integer = 0)
...
End Sub

C#:

public void TestOptional()
{
TestOptional(0);
}
public void TestOptional(int x)
{
...
}

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