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FileDialog.FileNames Property

Gets the file names of all selected files in the dialog box.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

'Declaration
Public ReadOnly Property FileNames As String()
'Usage
Dim instance As FileDialog
Dim value As String()

value = instance.FileNames

/** @property */
public String[] get_FileNames ()

public function get FileNames () : String[]

Property Value

An array of type String, containing the file names of all selected files in the dialog box.

Each file name includes both the file path and the extension. If no files are selected, this method returns an empty array.

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.

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


private void InitializePictureBox()
{
    this.pictureBox1 = new System.Windows.Forms.PictureBox();
    this.pictureBox1.set_BorderStyle(
        System.Windows.Forms.BorderStyle.FixedSingle);
    this.pictureBox1.set_SizeMode(PictureBoxSizeMode.StretchImage);
    this.pictureBox1.set_Location(new System.Drawing.Point(72, 112));
    this.pictureBox1.set_Name("pictureBox1");
    this.pictureBox1.set_Size(new System.Drawing.Size(160, 136));
    this.pictureBox1.set_TabIndex(6);
    this.pictureBox1.set_TabStop(false);
} //InitializePictureBox

private void InitializeOpenFileDialog()
{
    this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
    // Set the file dialog to filter for graphics files.
    this.openFileDialog1.set_Filter("Images (*.BMP;*.JPG;*.GIF)|" 
        + "*.BMP;*.JPG;*.GIF|All files (*.*)|*.*");
    // Allow the user to select multiple images.
    this.openFileDialog1.set_Multiselect(true);
    this.openFileDialog1.set_Title("My Image Browser");
} //InitializeOpenFileDialog

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

// 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.get_FileNames();
    // Open each file and display the image in pictureBox1.
    // Call Application.DoEvents to force a repaint after each
    // file is read.
    for (int iCtr = 0; iCtr < files.length; iCtr++) {
        String file = files[iCtr];
        System.IO.FileInfo fileInfo = new System.IO.FileInfo(file);
        System.IO.FileStream fileStream = fileInfo.OpenRead();
        pictureBox1.set_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.set_Image(null);
} //openFileDialog1_FileOk

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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