I am using the following code to split a string:
string sss=\"125asdasdlkmlkdfknkldj125kdjfngdkjfndkg125ksndkfjdks125\"; List s = new List<
You can just create a char []:
char []
List s = new List(sss.split(new char[] {'1', '2', '5'}))
or
List s = new List(sss.split("125".ToCharArray()));
More information: http://msdn.microsoft.com/en-us/library/ezftk57x.aspx