FileDialog.FileOk FileDialog.FileOk FileDialog.FileOk FileDialog.FileOk Event

Definition

Tritt ein, wenn der Benutzer in einem Dateidialogfeld auf die Schaltfläche Öffnen oder Speichern klickt.Occurs when the user clicks on the Open or Save button on a file dialog box.

public:
 event System::ComponentModel::CancelEventHandler ^ FileOk;
public event System.ComponentModel.CancelEventHandler FileOk;
member this.FileOk : System.ComponentModel.CancelEventHandler 
Public Custom Event FileOk As CancelEventHandler 

Beispiele

Im folgenden Codebeispiel wird die Verwendung FileNames der-Eigenschaft, FileOk die Behandlung des- Application.DoEvents Ereignisses und die Verwendung der-Methode veranschaulicht.The following code example demonstrates using the FileNames property, handling the FileOk event and using the Application.DoEvents method. Wenn das Beispiel ausgeführt wird, kann ein Benutzer Grafikdateien aus einem OpenFileDialog Objekt auswählen.When the example runs, a user can select graphics files from an OpenFileDialog object. Die ausgewählten Dateien werden im Formular angezeigt.The selected files are displayed in the form. Die Application.DoEvents -Methode erzwingt das Neuzeichnen des Formulars für jede geöffnete Grafikdatei.The Application.DoEvents method forces a repaint of the form for each graphics file opened. Fügen Sie zum Ausführen dieses Beispiels den folgenden Code in ein Formular ein PictureBox PictureBox1, das einen OpenFileDialog mit OpenFileDialog1dem Namen, Button einen fileButtonNamen und einen mit dem Namen enthält.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. Ruft die InitializePictureBox Methoden InitializeOpenFileDialog und aus dem Konstruktor oder Load der Methode des Formulars auf.Call the InitializePictureBox and InitializeOpenFileDialog methods from the form's constructor or Load method. Wenn das Beispiel ausgeführt wird, klicken Sie auf die Schaltfläche, um das Dialogfeld anzuzeigen.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 =
      System::Windows::Forms::BorderStyle::FixedSingle;
   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 )
{
   OpenFileDialog1->ShowDialog();
}

// 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 )
{
   this->Activate();
   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 );
      Application::DoEvents();
      fileStream->Close();
      
      // Call Sleep so the picture is briefly displayed, 
      //which will create a slide-show effect.
      System::Threading::Thread::Sleep( 2000 );
   }
   PictureBox1->Image = nullptr;
}
private void InitializePictureBox()
{
	this.pictureBox1 = new System.Windows.Forms.PictureBox();
	this.pictureBox1.BorderStyle = 
		System.Windows.Forms.BorderStyle.FixedSingle;
	this.pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
	this.pictureBox1.Location = new System.Drawing.Point(72, 112);
	this.pictureBox1.Name = "pictureBox1";
	this.pictureBox1.Size = new System.Drawing.Size(160, 136);
	this.pictureBox1.TabIndex = 6;
	this.pictureBox1.TabStop = false;
}

private void InitializeOpenFileDialog()
{
	this.openFileDialog1 = new 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";
	
}

private void fileButton_Click(System.Object sender, System.EventArgs e)
{
	openFileDialog1.ShowDialog();
}


// This method handles the FileOK event.  It opens each file 
// selected and loads the image from a stream into pictureBox1.
private void openFileDialog1_FileOk(object sender, 
	System.ComponentModel.CancelEventArgs e)
{

	this.Activate();
	 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.        
	foreach (string file in files )
	{
		System.IO.FileInfo fileInfo = new System.IO.FileInfo(file);
		System.IO.FileStream fileStream = fileInfo.OpenRead();
		pictureBox1.Image = System.Drawing.Image.FromStream(fileStream);
		Application.DoEvents();
		fileStream.Close();

		// Call Sleep so the picture is briefly displayed, 
		//which will create a slide-show effect.
		System.Threading.Thread.Sleep(2000);
	}
	pictureBox1.Image = null;
}
Private Sub InitializePictureBox()
    Me.PictureBox1 = New System.Windows.Forms.PictureBox
    Me.PictureBox1.BorderStyle = _
        System.Windows.Forms.BorderStyle.FixedSingle
    Me.PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage
    Me.PictureBox1.Location = New System.Drawing.Point(72, 112)
    Me.PictureBox1.Name = "PictureBox1"
    Me.PictureBox1.Size = New System.Drawing.Size(160, 136)
    Me.PictureBox1.TabStop = False
End Sub

Private Sub InitializeOpenFileDialog()
    Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog

    ' Set the file dialog to filter for graphics files.
    Me.OpenFileDialog1.Filter = _
    "Images (*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*"

    ' Allow the user to select multiple images.
    Me.OpenFileDialog1.Multiselect = True
    Me.OpenFileDialog1.Title = "My Image Browser"
End Sub

Private Sub fileButton_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles FileButton.Click
    OpenFileDialog1.ShowDialog()
End Sub


' This method handles the FileOK event.  It opens each file 
' selected and loads the image from a stream into PictureBox1.
Private Sub OpenFileDialog1_FileOk(ByVal sender As Object, _
ByVal e As System.ComponentModel.CancelEventArgs) _
 Handles OpenFileDialog1.FileOk

    Me.Activate()
    Dim file, files() As 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 file In files
        Dim fileInfo As System.IO.FileInfo = New System.IO.FileInfo(file)
        Dim fileStream As System.IO.FileStream = fileInfo.OpenRead()
        PictureBox1.Image = System.Drawing.Image.FromStream(fileStream)
        Application.DoEvents()
        fileStream.Close()

        ' Call Sleep so the picture is briefly displayed, 
        'which will create a slide-show effect.
        System.Threading.Thread.Sleep(2000)
    Next
    PictureBox1.Image = Nothing
End Sub

Hinweise

Weitere Informationen zur Behandlung von Ereignissen finden Sie unter behandeln und Auswerfen von Ereignissen.For information about handling events, see Handling and Raising Events.

Gilt für:

Siehe auch