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DXFileDialog.Filter Property

Gets or sets the current file name filter string, which determines the choices that appear in a file dialog.

Namespace: DevExpress.Xpf.Dialogs

Assembly: DevExpress.Xpf.Dialogs.v23.1.dll

NuGet Package: DevExpress.Wpf.Dialogs


public string Filter { get; set; }

Property Value

Type Description

The file filtering options available in the file dialog.


For each filtering option, the filter string contains a description of the filter, followed by the vertical bar (|) and the filter pattern. The strings for different filtering options are separated by the vertical bar.

The following is an example of a filter string:

Text files (*.txt)|*.txt|All files (*.*)|*.*

You can add several filter patterns to a filter by separating the file types with semicolons, for example:

Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*

Use the DXFileDialog.FilterIndex property to set which filtering option is shown first to the user.

The code sample below demonstrates how to define filters that allow end-users to see images or all files.

private void button_Click(object sender, RoutedEventArgs e) {
    var fileDialog = new DXOpenFileDialog();
    fileDialog.Filter = "Image Files|*.BMP;*.JPG;*.GIF|All files|*.*";
See Also