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Function to check key validation using asp.net

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Function to check key validation using asp. net ublic Function KeyValid(ByVal keyChar As Char, ByVal strType As KeyType) As Boolean Dim blnRetVal As Boolean Dim strNumStr As String = "0123456789" Dim strDecStr As String = "0123456789." Dim strAlpha As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" Dim strDate As String = "0123456789/" Dim strPhone As String = "0123456789-()," Dim strTime As String = "01234567890:" Dim strEqn As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./*+-()|" Dim strAlphaNum As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" Try blnRetVal = False If Asc(keyChar) < 32 Then KeyValid = False Exit Function End If Select Case strType Case KeyType.KeyAlpha If strAlpha.IndexOf(keyChar) < 0 Then blnRetVal = Not blnRetVal Case KeyType.KeyAlphaNum If strAlphaNum.IndexOf(keyChar) ...
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