Winform:使用System.Windows.Forms命名空间中相应控件; WPF则调用Microsoft.Win32。

MessageBox:

// WinForm
private void WFMessageBoxClicked(object sender, RoutedEventArgs e)
{
System.Windows.Forms.MessageBox.Show("Hello from Windows Forms!", "Hello World!");
}// WPF
private void WPFMessageBoxClicked(object sender, RoutedEventArgs e)
{
System.Windows.MessageBox.Show("Hello from WPF!", "Hello world!");
} OpenFileDialog / SaveFileDialog:// WinForm
private void WinFormsDialogClicked(object sender, RoutedEventArgs e)
{
System.Windows.Forms.OpenFileDialog dialogOpenFile = new System.Windows.Forms.OpenFileDialog();
dialogOpenFile.ShowDialog(); //System.Windows.Forms.SaveFileDialog dialogSaveFile = new System.Windows.Forms.SaveFileDialog();
//dialogSaveFile.ShowDialog();
}

// WPF
private void WPFDialogClicked(object sender, RoutedEventArgs e)
{
Microsoft.Win32.OpenFileDialog dialogOpenFile = new Microsoft.Win32.OpenFileDialog();
dialogOpenFile.ShowDialog(); //Microsoft.Win32.SaveFileDialog dialogSaveFile = new Microsoft.Win32.SaveFileDialog();
//dialogSaveFile.ShowDialog();
}