ATL / WTL / STL

unsigned int length = 0;
length = strlen( some_char_array );

if( length < SOME_CONSTANT )
  { X = 1; }
else
  { X = 2; }

The installation routines ODBC Microsoft Access Driver (*. Mdb) are not found. Please reinstall the driver.

Public Class Form1
    Private Declare Function SQLConfigDataSource Lib "ODBCCP32.DLL" (ByVal hwndParent As Integer, ByVal ByValfRequest As Integer, ByVal lpszDriver As String, ByVal lpszAttributes As String) As Integer
    Private Const ODBC_ADD_SYS_DSN As Short = 4
    Private Const vbAPINull As Integer = 0 ' NULL Pointer

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        CreateSystemDSN()

    End Sub
    Public Sub CreateSystemDSN()
        Dim ReturnValue As Integer
        Dim Driver As String
        Dim Attributes As String
        Driver = "Microsoft Access Driver (*.mdb)"
        Attributes = "SERVER=SomeServer" & Chr(0)
        Attributes = Attributes & "DESCRIPTION=New DSN" & Chr(0)
        Attributes = Attributes & "DSN=DSN_TEMP" & Chr(0)
        Attributes = Attributes & "DATABASE=pubs" & Chr(0)
        ReturnValue = SQLConfigDataSource(vbAPINull, ODBC_ADD_SYS_DSN, Driver, Attributes)
        If ReturnValue <> 0 Then
            MsgBox("DSN Created")
        Else
            MsgBox("Create Failed")
        End If
    End Sub
End Class