Method

IsNumeric

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Description

Indicates whether the value passed is numeric.

Usage

result = IsNumeric(value)

Part	Type	Description
result	Boolean	True if value is numeric; False otherwise.
value	Variant	Variable, value, or object whose data type is being investigated.

Notes

A common usage of IsNumeric is to determine whether a user entered a string that can be converted to a number.

Strings greater than 127 characters always return False.

Sample code

If the value passed to IsNumeric is a String that contains the string version of a number, then IsNumeric returns True. For example this code returns True:

Var b As Boolean
b = IsNumeric("3.1416")

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This code returns False:

Var b As Boolean
b = IsNumeric("Hello")

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Check a user-entered string:

Var value As Double
Var b As Boolean
b = IsNumeric(TextField1.Text)
If b Then
  value = TextField1.Text.ToDouble
End If

Compatibility

All project types on all supported operating systems.

See also

Boolean, Byte, Color, Currency, Double, Int8, Int16, Int32, Int64, Single, String, UInt8, UInt16, UInt32, UInt64, Variant data types.