OpenFileDialog Class
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OpenFileDialog Class

 

Displays a standard dialog box that prompts the user to open a file. This class cannot be inherited.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

System::Object
  System::MarshalByRefObject
    System.ComponentModel::Component
      System.Windows.Forms::CommonDialog
        System.Windows.Forms::FileDialog
          System.Windows.Forms::OpenFileDialog

public ref class OpenFileDialog sealed : FileDialog

NameDescription
System_CAPS_pubmethodOpenFileDialog()

Initializes an instance of the OpenFileDialog class.

NameDescription
System_CAPS_pubpropertyAddExtension

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.)

System_CAPS_pubpropertyAutoUpgradeEnabled

Gets or sets a value indicating whether this FileDialog instance should automatically upgrade appearance and behavior when running on Windows Vista.(Inherited from FileDialog.)

System_CAPS_pubpropertyCheckFileExists

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.)

System_CAPS_pubpropertyCheckPathExists

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.)

System_CAPS_pubpropertyContainer

Gets the IContainer that contains the Component.(Inherited from Component.)

System_CAPS_pubpropertyCustomPlaces

Gets the custom places collection for this FileDialog instance.(Inherited from FileDialog.)

System_CAPS_pubpropertyDefaultExt

Gets or sets the default file name extension.(Inherited from FileDialog.)

System_CAPS_pubpropertyDereferenceLinks

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.)

System_CAPS_pubpropertyFileName

Gets or sets a string containing the file name selected in the file dialog box.(Inherited from FileDialog.)

System_CAPS_pubpropertyFileNames

Gets the file names of all selected files in the dialog box.(Inherited from FileDialog.)

System_CAPS_pubpropertyFilter

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.)

System_CAPS_pubpropertyFilterIndex

Gets or sets the index of the filter currently selected in the file dialog box.(Inherited from FileDialog.)

System_CAPS_pubpropertyInitialDirectory

Gets or sets the initial directory displayed by the file dialog box.(Inherited from FileDialog.)

System_CAPS_pubpropertyMultiselect

Gets or sets a value indicating whether the dialog box allows multiple files to be selected.

System_CAPS_pubpropertyReadOnlyChecked

Gets or sets a value indicating whether the read-only check box is selected.

System_CAPS_pubpropertyRestoreDirectory

Gets or sets a value indicating whether the dialog box restores the directory to the previously selected directory before closing.(Inherited from FileDialog.)

System_CAPS_pubpropertySafeFileName

Gets the file name and extension for the file selected in the dialog box. The file name does not include the path.

System_CAPS_pubpropertySafeFileNames

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.

System_CAPS_pubpropertyShowHelp

Gets or sets a value indicating whether the Help button is displayed in the file dialog box.(Inherited from FileDialog.)

System_CAPS_pubpropertyShowReadOnly

Gets or sets a value indicating whether the dialog box contains a read-only check box.

System_CAPS_pubpropertySite

Gets or sets the ISite of the Component.(Inherited from Component.)

System_CAPS_pubpropertySupportMultiDottedExtensions

Gets or sets whether the dialog box supports displaying and saving files that have multiple file name extensions.(Inherited from FileDialog.)

System_CAPS_pubpropertyTag

Gets or sets an object that contains data about the control. (Inherited from CommonDialog.)

System_CAPS_pubpropertyTitle

Gets or sets the file dialog box title.(Inherited from FileDialog.)

System_CAPS_pubpropertyValidateNames

Gets or sets a value indicating whether the dialog box accepts only valid Win32 file names.(Inherited from FileDialog.)

NameDescription
System_CAPS_pubmethodCreateObjRef(Type^)

Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodDispose()

Releases all resources used by the Component.(Inherited from Component.)

System_CAPS_pubmethodEquals(Object^)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetLifetimeService()

Retrieves the current lifetime service object that controls the lifetime policy for this instance.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodInitializeLifetimeService()

Obtains a lifetime service object to control the lifetime policy for this instance.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodOpenFile()

Opens the file selected by the user, with read-only permission. The file is specified by the FileName property.

System_CAPS_pubmethodReset()

Resets all properties to their default values. (Overrides FileDialog::Reset().)

System_CAPS_pubmethodShowDialog()

Runs a common dialog box with a default owner.(Inherited from CommonDialog.)

System_CAPS_pubmethodShowDialog(IWin32Window^)

Runs a common dialog box with the specified owner.(Inherited from CommonDialog.)

System_CAPS_pubmethodToString()

This API supports the product infrastructure and is not intended to be used directly from your code. Provides a string version of this object.(Inherited from FileDialog.)

NameDescription
System_CAPS_pubeventDisposed

Occurs when the component is disposed by a call to the Dispose method. (Inherited from Component.)

System_CAPS_pubeventFileOk

Occurs when the user clicks on the Open or Save button on a file dialog box.(Inherited from FileDialog.)

System_CAPS_pubeventHelpRequest

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 core 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 to define the file extension filter and dialog behavior, and displays the dialog box using the CommonDialog::ShowDialog method. The example requires a form with a Button placed on it and a reference to 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();
         }
      }
   }

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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