Pressing the OK button indicates that a user has entered data and wants the function to continue processing with that data.
Yes No Cancel Dim icon As Message Box Image = Message Box Image. Most dialog boxes display and gather more complex data than the result of a message box, including text, selection (check boxes), mutually exclusive selection (radio buttons), and list selection (list boxes, combo boxes, drop-down list boxes). Default Ext = ".text"; // Default file extension dlg. File Name = "Document" ' Default file name dlg. Showing a window as a dialog box is similar to showing a normal window, although it requires additional dialog box-specific configuration.
Warning ' Display message box Dim result As Message Box Result = Message Box. For these, Windows Presentation Foundation (WPF) provides several common dialog boxes and allows you to create your own dialog boxes, although the use of either is limited to applications running with full trust. Default Ext = ".txt"; // Default file extension dlg. File Name = "Document" ' Default file name dlg. Filter = "Text documents (.txt)|*.txt"; // Filter files by extension // Show save file dialog box Nullable' Configure save file dialog box Dim dlg As New Microsoft. Default Ext = ".text" ' Default file extension dlg. The entire process of instantiating, configuring, and opening a dialog box is shown in the following code.
Get Children(node) If (Type Of subnode Is Dependency Object And Also Not Me.
Is Valid(Direct Cast(subnode, Dependency Object))) Then ' If a child dependency object is invalid, return false immediately, ' otherwise keep checking Return False End If Next ' All dependency objects are valid Return True End Function End Class End Namespace , and the window is considered invalid.
For example, if a user wants to find occurrences of a particular word in a document, a main window will often open a dialog box to ask a user what word they are looking for.
Since finding a word doesn't prevent a user from editing the document, however, the dialog box doesn't need to be modal.
Because the function depends on the modal dialog box to gather data, the modal dialog box also prevents a user from activating other windows in the application while it remains open.
In most cases, a modal dialog box allows a user to signal when they have finished with the modal dialog box by pressing either an OK or Cancel button.
A modeless dialog box at least provides a Close button to close the dialog box, and may provide additional buttons to execute specific functions, such as a Find Next button to find the next word that matches the find criteria of a word search.