'Declaration
 
Protected Sub InitializeMessageBox( _
   ByVal owner As Window, _
   ByVal ownerHandle As IntPtr, _
   ByVal text As String, _
   ByVal caption As String, _
   ByVal button As MessageBoxButton, _
   ByVal image As MessageBoxImage, _
   ByVal defaultResult As MessageBoxResult _
) 

'Usage
 
Dim instance As MessageBox
Dim owner As Window
Dim ownerHandle As IntPtr
Dim text As String
Dim caption As String
Dim button As MessageBoxButton
Dim image As MessageBoxImage
Dim defaultResult As MessageBoxResult
 
instance.InitializeMessageBox(owner, ownerHandle, text, caption, button, image, defaultResult)

protected void InitializeMessageBox( 
   Window owner,
   IntPtr ownerHandle,
   string text,
   string caption,
   MessageBoxButton button,
   MessageBoxImage image,
   MessageBoxResult defaultResult
)

Parameters

owner

The owner Window.

ownerHandle

text

The text of the MessageBox.

caption

The caption of the MessageBox.

button

The MessageBoxButton.

image

The MessageBoxImage.

defaultResult

The default result.

.NET: net5.0, net5.0-windows, net6.0, net6.0-macos, net6.0-windows, net7.0, net7.0-macos, net7.0-windows, net8.0, net8.0-browser, net8.0-macos, net8.0-windows, net9.0, net9.0-browser, net9.0-macos, net9.0-windows, net10.0, net10.0-browser, net10.0-macos, net10.0-windows.

.NET Framework: net40, net403, net45, net451, net452, net46, net461, net462, net463, net47, net471, net472, net48, net481.

Reference

MessageBox Class
MessageBox Members