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Value was either too large or too small for an Int32.

Posted on 2013-06-18
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Last Modified: 2013-06-25
I am trying to convert a string variable to a number but keep getting this error message.  Any ideas why this keeps occurring.  Any help is greatly appreciated.

Sample Data: 7417355331


            string practiceTaxId;
            decimal mpracticeTaxId;
            practiceTaxId = Session.Contents["practiceTaxId"].ToString();
            mpracticeTaxId = Convert.ToInt32(practiceTaxId);   <----------------Error Occurs Here


Here is the exception detail:

System.OverflowException was unhandled by user code
  HResult=-2146233066
  Message=Value was either too large or too small for an Int32.
  Source=mscorlib
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Question by:kwh3856
3 Comments
 
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virtuadept earned 1000 total points
ID: 39257857
It means that it can't fit in an INT32 field, it's either bigger than 2^31-1 (2147483647) or its a negative number too big to fit in that many bits.
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Assisted Solution

by:Mike Tomlinson
Mike Tomlinson earned 1000 total points
ID: 39257912
If it's too big, switch to Int64, otherwise known as "long".
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Author Closing Comment

by:kwh3856
ID: 39275060
Sorry for the delay in getting back.  Thank you both.
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