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How to freeze columns in TreeGrid

Platform: jQuery |
Control: ejTreeGrid |
Published Date: August 2, 2016 |
Last Revised Date: May 29, 2019

TreeGrid provides support to freeze the columns. In the columns collection, to freeze a specific column, we need to enable the isFrozen property and to enable/disable the freezing option in the column menu for a specific column, we need to set allowFreezing property as true/false.

By using the freezeColumn public method we can dynamically freeze the specified column.

The below code example explains about how to freeze a column

<div id="TreeGridContainer" style="height:400px;width:100%"></div> 
<button onclick="clickme()" style="margin-top:10px">Freeze Column</button>   
<script type="text/javascript">
$(function () {
            $("#TreeGridContainer").ejTreeGrid({
                //...
                dataSource: projectData,
                showColumnChooser:true,
                columns: [
                    { field: "taskID", headerText: "ID", width:       60,allowFreezing:false,isFrozen:true },
                    { field: "taskName", headerText: "Task Name", width: 200, },
                    { field: "startDate", headerText: "Start Date" },
                    { field: "endDate", headerText: "End Date" },
                    { field: "duration", headerText: "Duration"},
        { field: "approved", headerText: "Approved"},
                    { field: "priority", headerText: "Priority" },
                    { field: "progress", headerText: "Progress"}
                ]
            });
        });
        function clickme() {
            var treeObj = $("#TreeGridContainer").data("ejTreeGrid");
            treeObj.freezeColumn("taskName", true);
        }         
</script>

 

Freeze a specific column.A Sample to Freeze the column is available in the following link,

Sample

 

 

 

 

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