Gets or sets a value indicating whether the dialog box displays a warning if the user specifies a file name that does not exist. Gets or sets a value indicating whether the dialog box displays a warning if the user specifies a path that does not exist.
Gets or sets the GUID to associate with this dialog state. Typically, state such as the last visited folder and the position and size of the dialog is persisted based on the name of the executable file. By specifying a GUID, an application can have different persisted states for different versions of the dialog within the same application for example, an import dialog and an open dialog. This functionality is not available if an application is not using visual styles or if AutoUpgradeEnabled is set to false.
Gets the IContainer that contains the Component. Gets the custom places collection for this FileDialog instance. Gets or sets a value indicating whether the dialog box returns the location of the file referenced by the shortcut or whether it returns the location of the shortcut. Gets a value that indicates whether the Component is currently in design mode. Gets the list of event handlers that are attached to this Component.
Gets or sets the current file name filter string, which determines the choices that appear in the "Save as file type" or "Files of type" box in the dialog box.
Gets values to initialize the FileDialog. Gets or sets a value indicating whether the dialog box restores the directory to the previously selected directory before closing. Gets the file name and extension for the file selected in the dialog box. The file name does not include the path. Gets an array of file names and extensions for all the selected files in the dialog box. The file names do not include the path.
Gets or sets a value indicating whether the Help button is displayed in the file dialog box. Gets or sets the ISite of the Component. Gets or sets whether the dialog box supports displaying and saving files that have multiple file name extensions. Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.
Releases all resources used by the Component. Releases the unmanaged resources used by the Component and optionally releases the managed resources.
Retrieves the current lifetime service object that controls the lifetime policy for this instance. Returns an object that represents a service provided by the Component or by its Container. Gets the Type of the current instance. Defines the common dialog box hook procedure that is overridden to add specific functionality to the file dialog box.
Creates a shallow copy of the current Object. Creates a shallow copy of the current MarshalByRefObject object. Raises the FileOk event. Raises the HelpRequest event. Opens the file selected by the user, with read-only permission.
The file is specified by the FileName property. Filter property represents the filter on an open file dialog that is used to filter the type of files to be loaded during the browse option in an open file dialog. For example, if you need users to restrict to image files only, we can set Filter property to load image files only. CheckFileExists property indicates whether the dialog box displays a warning if the user specifies a file name that does not exist.
CheckPathExists property indicates whether the dialog box displays a warning if the user specifies a path that does not exist. ReadOnlyChecked property represents whether the read-only checkbox is selected and ShowReadOnly property represents whether the read-only checkbox is available or not.
The Form looks like Figure 4. The Browse button click event handler will show an open file dialog and users will be able to select text files. The open file dialog looks like Figure 5. The following code snippet is the code for Browse button click event handler.
Once a text file is selected, the name of the text file is displayed in the TextBox. In this article, we discussed how to use a Windows Open File Dialog and set its properties in a Windows Forms application. View All. For more information about reading from file streams, see FileStream. BeginRead and FileStream.
The following example uses the Button control's Click event handler to open the OpenFileDialog with a filter that shows only text files. After the user chooses a text file and selects OK , the OpenFile method is used to open the file in Notepad.
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