VarType Function (Visual Basic)
Returns an Integer value that contains the data type classification of a variable.
Public Function VarType(ByVal VarName As Object) As VariantType
Parameters
- VarName
Required. Object variable. If Option Strict is Off, you can pass a variable of any data type except a structure.
Remarks
The integer value returned by VarType is a member of the VariantType Enumeration.
The following table shows the values returned by VarType for special cases of VarName.
Data type represented by VarName |
Value returned by VarType |
|---|---|
VariantType.Object |
|
VariantType.Null |
|
Enumeration |
Underlying data type (SByte, Byte, Short, UShort, Integer, UInteger, Long, or ULong) |
Array |
Bitwise OR of array element type and VariantType.Array |
Array of arrays |
Bitwise OR of VariantType.Object and VariantType.Array |
Structure (System.ValueType) |
VariantType.UserDefinedType |
VariantType.Error |
|
Unknown |
VariantType.Object |
Example
The following example uses the VarType function to return data type classification information about several variables.
Dim testString As String = "String for testing"
Dim testObject As New Object
Dim testNumber, testArray(5) As Integer
Dim testVarType As VariantType
testVarType = VarType(testVarType)
' Returns VariantType.Integer.
testVarType = VarType(testString)
' Returns VariantType.String.
testVarType = VarType(testObject)
' Returns VariantType.Object.
testVarType = VarType(testNumber)
' Returns VariantType.Integer.
testVarType = VarType(testArray)
' Returns the bitwise OR of VariantType.Array and VariantType.Integer.
Smart Device Developer Notes
This function is not supported.
Requirements
Namespace: Microsoft.VisualBasic
Module: Information
Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)