OpenFileDialog Class
Prompts the user to open a file. This class cannot be inherited.
System::MarshalByRefObject
System.ComponentModel::Component
System.Windows.Forms::CommonDialog
System.Windows.Forms::FileDialog
System.Windows.Forms::OpenFileDialog
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The OpenFileDialog type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | AddExtension | Gets or sets a value indicating whether the dialog box automatically adds an extension to a file name if the user omits the extension. (Inherited from FileDialog.) |
![]() | AutoUpgradeEnabled | Gets or sets a value indicating whether this FileDialog instance should automatically upgrade appearance and behavior when running on Windows Vista. (Inherited from FileDialog.) |
![]() | CanRaiseEvents | Gets a value indicating whether the component can raise an event. (Inherited from Component.) |
![]() | CheckFileExists | Gets or sets a value indicating whether the dialog box displays a warning if the user specifies a file name that does not exist. (Overrides FileDialog::CheckFileExists.) |
![]() | CheckPathExists | Gets or sets a value indicating whether the dialog box displays a warning if the user specifies a path that does not exist. (Inherited from FileDialog.) |
![]() | Container | Gets the IContainer that contains the Component. (Inherited from Component.) |
![]() | CustomPlaces | Gets the custom places collection for this FileDialog instance. (Inherited from FileDialog.) |
![]() | DefaultExt | Gets or sets the default file name extension. (Inherited from FileDialog.) |
![]() | DereferenceLinks | 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 (.lnk). (Inherited from FileDialog.) |
![]() | DesignMode | Gets a value that indicates whether the Component is currently in design mode. (Inherited from Component.) |
![]() | Events | Gets the list of event handlers that are attached to this Component. (Inherited from Component.) |
![]() | FileName | Gets or sets a string containing the file name selected in the file dialog box. (Inherited from FileDialog.) |
![]() | FileNames | Gets the file names of all selected files in the dialog box. (Inherited from FileDialog.) |
![]() | Filter | 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. (Inherited from FileDialog.) |
![]() | FilterIndex | Gets or sets the index of the filter currently selected in the file dialog box. (Inherited from FileDialog.) |
![]() | InitialDirectory | Gets or sets the initial directory displayed by the file dialog box. (Inherited from FileDialog.) |
![]() | Instance | Infrastructure. Gets the Win32 instance handle for the application. (Inherited from FileDialog.) |
![]() | Multiselect | Gets or sets a value indicating whether the dialog box allows multiple files to be selected. |
![]() | Options | Infrastructure. Gets values to initialize the FileDialog. (Inherited from FileDialog.) |
![]() | ReadOnlyChecked | Gets or sets a value indicating whether the read-only check box is selected. |
![]() | RestoreDirectory | Gets or sets a value indicating whether the dialog box restores the current directory before closing. (Inherited from FileDialog.) |
![]() | SafeFileName | Gets the file name and extension for the file selected in the dialog box. The file name does not include the path. |
![]() | SafeFileNames | 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. |
![]() | ShowHelp | Gets or sets a value indicating whether the Help button is displayed in the file dialog box. (Inherited from FileDialog.) |
![]() | ShowReadOnly | Gets or sets a value indicating whether the dialog box contains a read-only check box. |
![]() | Site | Gets or sets the ISite of the Component. (Inherited from Component.) |
![]() | SupportMultiDottedExtensions | Gets or sets whether the dialog box supports displaying and saving files that have multiple file name extensions. (Inherited from FileDialog.) |
![]() | Tag | Gets or sets an object that contains data about the control. (Inherited from CommonDialog.) |
![]() | Title | Gets or sets the file dialog box title. (Inherited from FileDialog.) |
![]() | ValidateNames | Gets or sets a value indicating whether the dialog box accepts only valid Win32 file names. (Inherited from FileDialog.) |
| Name | Description | |
|---|---|---|
![]() | CreateObjRef | Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject.) |
![]() | Dispose() | Releases all resources used by the Component. (Inherited from Component.) |
![]() | Dispose(Boolean) | Releases the unmanaged resources used by the Component and optionally releases the managed resources. (Inherited from Component.) |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Releases unmanaged resources and performs other cleanup operations before the Component is reclaimed by garbage collection. (Inherited from Component.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetLifetimeService | Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
![]() | GetService | Returns an object that represents a service provided by the Component or by its Container. (Inherited from Component.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | HookProc | Defines the common dialog box hook procedure that is overridden to add specific functionality to the file dialog box. (Inherited from FileDialog.) |
![]() | InitializeLifetimeService | Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
![]() | MemberwiseClone() | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | MemberwiseClone(Boolean) | Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject.) |
![]() | OnFileOk | Raises the FileOk event. (Inherited from FileDialog.) |
![]() | OnHelpRequest | Raises the HelpRequest event. (Inherited from CommonDialog.) |
![]() | OpenFile | Opens the file selected by the user, with read-only permission. The file is specified by the FileName property. |
![]() | OwnerWndProc | Defines the owner window procedure that is overridden to add specific functionality to a common dialog box. (Inherited from CommonDialog.) |
![]() | Reset | Resets all properties to their default values. (Overrides FileDialog::Reset().) |
![]() | RunDialog | Infrastructure. Specifies a common dialog box. (Inherited from FileDialog.) |
![]() | ShowDialog() | Runs a common dialog box with a default owner. (Inherited from CommonDialog.) |
![]() | ShowDialog(IWin32Window) | Runs a common dialog box with the specified owner. (Inherited from CommonDialog.) |
![]() | ToString | Infrastructure. Provides a string version of this object. (Inherited from FileDialog.) |
| Name | Description | |
|---|---|---|
![]() | Disposed | Occurs when the component is disposed by a call to the Dispose method. (Inherited from Component.) |
![]() | FileOk | Occurs when the user clicks on the Open or Save button on a file dialog box. (Inherited from FileDialog.) |
![]() | HelpRequest | Occurs when the user clicks the Help button on a common dialog box. (Inherited from CommonDialog.) |
This class allows you to check whether a file exists and to open it. The ShowReadOnly property determines whether a read-only check box appears in the dialog box. The ReadOnlyChecked property indicates whether the read-only check box is checked.
Most of the functionality for this class is found in the FileDialog class.
If you want to give the user the ability to select a folder instead of a file, use FolderBrowserDialog instead.
The following code example creates an OpenFileDialog, sets several properties, and displays the dialog box using the CommonDialog::ShowDialog method. The example requires a form with a Button placed on it and the System.IO namespace added to it.
private: void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ ) { Stream^ myStream; OpenFileDialog^ openFileDialog1 = gcnew OpenFileDialog; openFileDialog1->InitialDirectory = "c:\\"; openFileDialog1->Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*"; openFileDialog1->FilterIndex = 2; openFileDialog1->RestoreDirectory = true; if ( openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK ) { if ( (myStream = openFileDialog1->OpenFile()) != nullptr ) { // Insert code to read the stream here. myStream->Close(); } } }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.




