I am using the following code to split a string:
string sss=\"125asdasdlkmlkdfknkldj125kdjfngdkjfndkg125ksndkfjdks125\"; List s = new List<
Use a string array:
sss.Split(new[]{"125"},StringSplitOptions.None)
Or StringSplitOptions.RemoveEmptyEntries if you don't want a blank string for before the first 125.
StringSplitOptions.RemoveEmptyEntries