Displays a message box in front of the specified window. The message box displays a checkbox where users may opt to disable its appearance in the future. The message box also displays a message, title bar caption, button, and icon. The caller may also specify a default message box result. On return, the ref Boolean argument will be set to true if the checkbox was checked by the user.

public static MessageBoxResult Show( 
   ref bool noRemind,
   string checkBoxMessage,
   Window owner,
   string messageText,
   string caption,
   MessageBoxButton button,
   MessageBoxImage icon,
   MessageBoxResult defaultResult,
   string moreInfoText,
   string helpContextID,
   string helpLinkText
)

Public Overloads Shared Function Show( _
   ByRef noRemind As Boolean, _
   ByVal checkBoxMessage As String, _
   ByVal owner As Window, _
   ByVal messageText As String, _
   ByVal caption As String, _
   ByVal button As MessageBoxButton, _
   ByVal icon As MessageBoxImage, _
   ByVal defaultResult As MessageBoxResult, _
   ByVal moreInfoText As String, _
   Optional ByVal helpContextID As String, _
   Optional ByVal helpLinkText As String _
) As MessageBoxResult

ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Some Message", "Some title", MessageBoxButton.YesNo, MessageBoxImage.Information, MessageBoxResult.Yes);