How to show dialog box in C#?
Use ShowDialog() method to open the form as modal dialog box.
Where is dialog box in computer?
In Microsoft Windows, when you right-click a file and choose Properties, you are presented with the Properties dialog box. You can press Esc to cancel or close a dialog box.
What does show dialog do?
ShowDialog returns a Nullable<T>Boolean value that specifies whether the activity was accepted or canceled. The return value is the value of the DialogResult property before a window closes. For more information, see DialogResult.