System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string

Question

I have this code. I am trying to retrieve just the text \"first program\". Considering that i know the index say 25 and total length of string is 35.

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Answer 1

Second argument to string.Substring() is the length, not the end-offset:

Response.Write(text.Substring(25, 10));