Hi. I want to add some methods to mscorlib. For example:
string abc;
abc.IsNumeric()
i hope could explain my question.
Hi. I want to add some methods to mscorlib. For example:
string abc;
abc.IsNumeric()
i hope could explain my question.
You can't add methods to mscorlib, however you can use extension methods so they appear as if they are defined on string, e.g.
public static class StringExtensions
{
public static bool IsNumeric(this string s)
{
// TODO
}
}
Which you can then call as you requested, e.g.
"1234".IsNumeric()
You got a good answer by Greg. Just wanted to add that you can read more about extension methods here: