Article ID: 111868 - Last Review: September 19, 2006 - Revision: 1.3

Err Msg Using CInt() Function: Type Mismatch

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SUMMARY

In Microsoft Visual Basic Programming System, Applications Edition, when you use the CInt() function with a string that cannot be converted to a number, you receive the following error message:
Run-time error '13':
Type Mismatch
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MORE INFORMATION

The CInt function converts an expression to an integer. You can use any valid numeric or string expression, but the string expression must be able to be converted to a number. The Visual Basic Reference states that you should use the CInt function instead of the Val function to provide internationally aware conversions from any other data type to Integer. However, the two functions do not behave exactly the same.

When you use the Val function to return the numbers contained in a string, only the first numeric characters in the string are returned. While the Val function returns only the numeric part of a string expression, the CInt function returns the error message above if the string expression cannot be evaluated as a number.

The following is a table of expressions and values returned by the CInt and the Val functions. 
   Expression                    Value Returned
   --------------------------------------------
   Val("1726 56th Ave NE")       172656
   CInt("1726 56th Ave NE")      Error message
   Val("asdf")                   0
   Cint("asdf")                  Error message
   Val("1,000")                  1
   CInt("1,000")                 1000
   Val("1.34")                   1.34
   CInt("1.34")                  1
Because the Val function returns the value 0 when used with an expression that contains either 0 or no numbers at all, you cannot use it to test whether an input string is a valid number. You can, however, use the CInt function in a procedure to determine whether an input string is a valid number.
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REFERENCES

For more information about the CInt Function, choose the Search button in the Visual Basic Reference and type:
CInt
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APPLIES TO
  • Microsoft Office Professional Edition 2003
  • Microsoft Office Standard Edition 2003
  • Microsoft Office Small Business Edition 2003
  • Microsoft Office Students and Teachers Edition 2003
  • Microsoft Office Basic Edition 2003
  • Microsoft Office XP Professional
  • Microsoft Office XP Small Business Edition
  • Microsoft Office XP Students and Teachers
  • Microsoft Office XP Developer Edition
  • Microsoft Office 2000 Premium Edition
  • Microsoft Office 2000 Professional Edition
  • Microsoft Office 2000 Small Business Edition
  • Microsoft Office 2000 Standard Edition
  • Microsoft Office 2000 Developer Edition
  • Microsoft Office 97 Standard Edition
  • Microsoft Office 97 Developer Edition
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Keywords: 
KB111868
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