FileDialog::FileOk Event


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Occurs when the user clicks on the Open or Save button on a file dialog box.

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

event CancelEventHandler^ FileOk {
	void add(CancelEventHandler^ value);
	void remove(CancelEventHandler^ value);

For information about handling events, see Handling and Raising Events.

The following code example demonstrates using the FileNames property, handling the FileOk event and using the Application::DoEvents method. When the example runs, a user can select graphics files from an OpenFileDialog object. The selected files are displayed in the form. The Application::DoEvents method forces a repaint of the form for each graphics file opened. To run this example paste the following code in a form containing a PictureBox named PictureBox1, an OpenFileDialog named OpenFileDialog1, and a Button named fileButton. Call the InitializePictureBox and InitializeOpenFileDialog methods from the form's constructor or Load method. When the example is running, display the dialog box by clicking the button.

void InitializePictureBox()
   this->PictureBox1 = gcnew System::Windows::Forms::PictureBox;
   this->PictureBox1->BorderStyle =
   this->PictureBox1->SizeMode = PictureBoxSizeMode::StretchImage;
   this->PictureBox1->Location = System::Drawing::Point( 72, 112 );
   this->PictureBox1->Name = "PictureBox1";
   this->PictureBox1->Size = System::Drawing::Size( 160, 136 );
   this->PictureBox1->TabIndex = 6;
   this->PictureBox1->TabStop = false;

void InitializeOpenFileDialog()
   this->OpenFileDialog1 = gcnew System::Windows::Forms::OpenFileDialog;

   // Set the file dialog to filter for graphics files.
   this->OpenFileDialog1->Filter =
      "Images (*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|" +
      "All files (*.*)|*.*";

   // Allow the user to select multiple images.
   this->OpenFileDialog1->Multiselect = true;
   this->OpenFileDialog1->Title = "My Image Browser";

void fileButton_Click( System::Object^ sender, System::EventArgs^ e )

// This method handles the FileOK event.  It opens each file 
// selected and loads the image from a stream into PictureBox1.
void OpenFileDialog1_FileOk( Object^ sender,
   System::ComponentModel::CancelEventArgs^ e )
   array<String^>^ files = OpenFileDialog1->FileNames;

   // Open each file and display the image in PictureBox1.
   // Call Application.DoEvents to force a repaint after each
   // file is read.        
   for each ( String^ file in files )
      System::IO::FileInfo^ fileInfo = gcnew System::IO::FileInfo( file );
      System::IO::FileStream^ fileStream = fileInfo->OpenRead();
      PictureBox1->Image = System::Drawing::Image::FromStream( fileStream );

      // Call Sleep so the picture is briefly displayed, 
      //which will create a slide-show effect.
      System::Threading::Thread::Sleep( 2000 );
   PictureBox1->Image = nullptr;

.NET Framework
Available since 1.1
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