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Solved: Default filters lost on rebind of Telerik MVC Gridview.

Problem:
While working with MVC Telerik GridView let’s say you have some default filters using Filterable, as mentioned in below code:

@(Html.Telerik().Grid(Model)
    .Name("testGrid")
    .Columns(c =>
            {
                c.Bound(m => m.Id).Width(30);
                c.Bound(m => m.Name).Width(110);
                c.Bound(m => m.Telephone).Width(100);
                c.Bound(m => m.IsActive).Width(100);
            })
    .DataBinding(dataBinding =>
            {
                dataBinding.Ajax().Select("<Action-Name>", "<Controller-Name>",
                    new { id = Guid.NewGuid().ToString() });

            })
        .Sortable()
        .Pageable(paging => paging.PageSize(100))
        .Filterable(filtering => filtering
                    .ShowOrOption(true)
                    .Filters(filters => filters.Add(T => T.IsActive).IsEqualTo("Yes")))
        .Selectable()
)

And suppose there is one search button, on click of that you are refreshing the grid with the help of rebind method, as mentioned in below code:

$("#searchButton").click(function () {
    $('#testGrid').find("tr.t-no-data td").html("Please wait...");

    $('#testGrid').data('tGrid').rebind({ empId: '' });

    $('#testGrid').find("tr.t-no-data td").html("No records");
});

After refresh you’ll see that default filter IsActive of GridView is no more there.

Reason and Solution:
Default filter are removed on GridView rebind method because this method reset the filters, and if you try to see “filter by” property in jQuery debugging then it’ll be blank after grid rebind happens.

To solve this problem we can use ajaxRequest method to refresh the grid instead of rebind method, see the updated and working code below:

$("#searchButton").click(function () {
    $('#testGrid').find("tr.t-no-data td").html("Please wait...");

    //Use ajaxRequest instead of rebind so that filter won't reset.
    $('#testGrid').data('tGrid').ajaxRequest({empId: '' });

    $('#testGrid').find("tr.t-no-data td").html("No records");
});
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