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

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
0
kwh3856
Asked:
kwh3856
2 Solutions
 
virtuadeptCommented:
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.
0
 
Mike TomlinsonMiddle School Assistant TeacherCommented:
If it's too big, switch to Int64, otherwise known as "long".
0
 
kwh3856Author Commented:
Sorry for the delay in getting back.  Thank you both.
0
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