MessageBoxDefaultButton Enumeration
Specifies constants defining the default button on a MessageBox.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
This enumeration is used by the MessageBox class.
The following code example demonstrates how to display a MessageBox with the options supported by this overload of Show. After verifying that a string variable, ServerName, is empty, the example displays a MessageBox with a question box icon, offering the user the option to cancel the operation. The example uses the RightAlign member of the MessageBoxOptions enumeration to align the text to the right edge of the dialog box. If the Show method's return value evaluates to Yes, the form that displayed the MessageBox is closed.
Private Sub ValidateUserEntry2() ' Checks the value of the text. If ServerName.Text.Length = 0 Then ' Initializes variables to pass to the MessageBox.Show method. Dim Message As String = "You did not enter a server name. Cancel this operation?" Dim Caption As String = "No Server Name Specified" Dim Buttons As Integer = MessageBoxButtons.YesNo Dim Result As DialogResult 'Displays a MessageBox using the Question icon and specifying the No button as the default. Result = MessageBox.Show(Me, Message, Caption, MessageBoxButtons.YesNo, _ MessageBoxIcon.Question, MessageBoxDefaultButton.Button1, MessageBoxOptions.RightAlign) ' Gets the result of the MessageBox display. If Result = System.Windows.Forms.DialogResult.Yes Then ' Closes the parent form. Me.Close() End If End If End Sub
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
