Filter Grid Inside ComboBox

1 posts, 0 answers
  1. Duncan
    Duncan avatar
    1 posts
    Member since:
    Sep 2015

    Posted 28 Mar 2017 Link to this post

    I currently have a RadGrid in the drop down of a RadComboBox.

    I turned on the filtering of the columns and hid the button because I need the grid to filter on keyress so using java to assist with this.

    function Filter(colName, filtertxt) {
                            var filterTxt = document.getElementById(filtertxt);
                            var MasterTable = $find("<%= ddlProductClass.Items[0].FindControl("grdProductClass").ClientID %>").get_masterTableView();
                            var hidden = document.getElementById('<%= Hidden1.ClientID %>');
                            hidden.value = colName;
                            if (filterTxt.value.length > 0) {
                                MasterTable.filter(colName, filterTxt.value, Telerik.Web.UI.GridFilterFunction.StartsWith);
                                MasterTable.filter(colName, filterTxt.value, Telerik.Web.UI.GridFilterFunction.NoFilter);
                        function FocusFilter(filter) {
                            var input = document.getElementById(filter);
                            if (input.createTextRange) {
                                var FieldRange = input.createTextRange();
                                FieldRange.moveStart('character', input.value.length);


    code found from another sample.  My issue is when I start typing in the filter box I get 1 or 2 characters in and the page acts like it does a post back (flickers) and combobox drop down closes.  If I open the drop down my records are filtered based on what I typed in. 


    Any suggestions?

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