ListBoxProperties.DataSecurityMode Property

Provides the capability to restrict setting the editor value on the client side to values listed in the server ListEditProperties.Items.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v21.2.dll


public DataSecurityMode DataSecurityMode { get; set; }

Property Value

Type Default Description


One of the DataSecurityMode enumeration values.

Available values:

Name Description

The data editor allows adding and selecting custom editor items.


The data editor does not allow adding and selecting custom editor items.


By default, the DataSecurityMode property is set to the Default value. This means that a list editor allows adding new list items via client code and synchronizes modifications to this item list with the server ListEditProperties.Items collection if the ListBoxProperties.EnableSynchronization property is enabled. A list editor’s server value is allowed to be modified by an end-user by either selecting list items added via client code or by entering new values directly into an editor’s edit box. In this scenario, it is recommended to HTML encode the item’s content using the following:

  • enable the ASPxListBox.EncodeHtml property if items aren’t created using templates.
  • encode HTML using the HttpUtility.HtmlEncode method if items are created using templates.

    <dx:ASPxListBox ID="lb1" runat="server">
            <asp:Label ID="Label1" runat="server" Text='<%# HttpUtility.HtmlEncode(Eval("Text")) %>'></asp:Label>

You can set the DataSecurityMode property to Strict to prevent setting a list editor’s value to any value except values listed within the editor’s server-side ListEditProperties.Items collection. This helps you secure your data against any potential threat of malicious data modifications initiated in the client browser.

See Also