StartIndex cannot be less than zero.

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hi,
please help me i am getting this exception when this will occurs.

StartIndex cannot be less than zero.
Parameter name: startIndex

when debugger comes to this line it is throwing exception

C#

email = email.Remove(email.IndexOf(EmployeeDataset.Tables[0].Rows[j][
"EmailId"].ToString()), Convert.ToInt32(EmployeeDataset.Tables[0].Rows[j]["EmailId"].ToString().Length + 1));

please help me

Posted 4-Jan-12 4:14am

mandarapu

Updated 8-Jan-12 20:00pm

Mehdi Gholam

v2

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fjdiewornncalwe · Accepted Answer · 2012-01-04T04:23:00

My suspicion is that the .IndexOf method call is returning -1 which indicates that the value was not found.

I would break down your statement for debugging purposes:

C#

int indexOfEmail = email.IndexOf(EmployeeDataset.Tables[0].Rows[j]["EmailId"].ToString());
int lengthOfEmail = EmployeeDataset.Tables[0].Rows[j]["EmailId"].ToString().Length;
if( indexOfEmail >= 0 )
{
   email = email.Remove(indexOfEmail, lengthOfEmail + 1);
}

Now run the debugger with a breakpoint set on the int indexOfEmail line and step through each line checking the values as you go. I suspect that you will find indexOfEmail = -1.