Locks (freezes) a column and allows the user to see it at all times when scrolling.


column Number|String

The index of the column or the field to which the columns is bound.

To use this method, initialize the TreeList with at least one locked column and render unlocked columns which will remain after the target column is locked.

Example - locking a column

<button id="btn">Lock Age Column</button>
<div id="treeList" style="width: 400px"></div>
    columns: [
      { field: "id", locked: true, width: 150 },
      { field: "name", width: 150 },
      { field: "age", width: 150 }
    dataSource: [
      { id: 1, parentId: null, name: "Jane Doe", age: 22, expanded: true },
      { id: 2, parentId: 1, name: "John Doe", age: 24 },
      { id: 3, parentId: 1, name: "Jenny Doe", age: 3 }
    scrollable: true
    var treeList = $("#treeList").data("kendoTreeList");
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