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How to: Change the Visibility of Check Boxes in Multi-Selection Mode

The following example uses an external check box to change the visibility of ASPxCardView check boxes in multi-selection mode.

<dx:ASPxCheckBox ID="chkDisabled" runat="server" Text="Disable selection checkboxes"
    AutoPostBack="true" />

<dx:ASPxCardView ID="ASPxCardView1" runat="server" DataSourceID="AccessDataSource1" KeyFieldName="CustomerID" OnCommandButtonInitialize="ASPxCardView1_CommandButtonInitialize" AutoGenerateColumns="False">
    <Columns>
        <dx:CardViewTextColumn FieldName="CompanyName" />
        <dx:CardViewTextColumn FieldName="ContactName" />
        <dx:CardViewTextColumn FieldName="City" />
        <dx:CardViewTextColumn FieldName="Region" />
        <dx:CardViewTextColumn FieldName="Country" />
    </Columns>
    <CardLayoutProperties>
        <Items>
            <dx:CardViewCommandLayoutItem HorizontalAlign="Right" ShowSelectCheckbox="True" />
            <dx:CardViewColumnLayoutItem ColumnName="Company Name" />
            <dx:CardViewColumnLayoutItem ColumnName="Contact Name" />
            <dx:CardViewColumnLayoutItem ColumnName="City" />
            <dx:CardViewColumnLayoutItem ColumnName="Region" />
            <dx:CardViewColumnLayoutItem ColumnName="Country" />
            <dx:EditModeCommandLayoutItem HorizontalAlign="Right" />
        </Items>
    </CardLayoutProperties>
</dx:ASPxCardView>  
<asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="~/App_Data/nwind.mdb"
    SelectCommand="SELECT * FROM [Customers]" />  
protected void ASPxCardView1_CommandButtonInitialize(object sender, DevExpress.Web.ASPxCardViewCommandButtonEventArgs e) {
    if (e.ButtonType == CardViewCommandButtonType.SelectCheckbox)
        e.Visible = !chkDisabled.Checked;
}