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Returns a Boolean value indicating if the GridTableView filter item is currently visible or not. Can be used to create some condition for executing different script logic depending on the visibility status of the filter item.

<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server" AllowPaging="True"
    OnNeedDataSource="RadGrid1_NeedDataSource" AllowFilteringByColumn="true">
    <MasterTableView DataKeyNames="OrderID" IsFilterItemExpanded="false">
<br />
<asp:Button ID="Button1" runat="server" Text="Click"
    OnClientClick="buttonClick(); return false;" />
function buttonClick() {
    var grid = $find('<%= RadGrid1.ClientID %>');
    var masterTableView = grid.get_masterTableView();

    if (!masterTableView.get_isFilterItemVisible()) {
        alert("The user is unable to see the filter controls.");
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