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Row and cell customization in JavaScript TreeGrid control

28 Mar 2023 / 2 minutes to read

In Tree Grid we can customize the row and cell using queryCellInfo and rowDataBound events of Tree Grid.

In the below demo, we customize and show the command buttons only for the parent rows using queryCellInfo and rowDataBound events of Tree Grid.

Source
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index.ts
index.css
index.html
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import { TreeGrid, CommandColumn, Column, ITreeData } from "@syncfusion/ej2-treegrid";
import { sampleData } from './datasource.ts';
import { QueryCellInfoEventArgs, RowDataBoundEventArgs } from "@syncfusion/ej2-grids";

TreeGrid.Inject(CommandColumn);

let treegrid: TreeGrid = new TreeGrid({
  dataSource: sampleData,
  childMapping: "subtasks",
  treeColumnIndex: 1,
  height: 280,
  rowDataBound: rowDataBound,
  queryCellInfo: queryCellInfo,
  columns: [
    { field: "taskID", headerText: "Task ID", isPrimaryKey: true, width: 80, textAlign: "Right" },
    { field: "taskName", headerText: "Task Name", width: 200 },
    { field: "startDate", headerText: "Start Date", textAlign: "Right", width: 90,
      format: { skeleton: "yMd", type: "date" } },
    { field: "endDate", headerText: "End Date", textAlign: "Right", width: 90,
      format: { skeleton: "yMd", type: "date" } },
    { field: "duration", headerText: "Duration", textAlign: "Right", width: 90 },
    { field: "progress", headerText: "Progress", width: 90 },
    { headerText: "Commands", width: 120,
      commands: [
        {
          buttonOption: {
            content: "Details",
            cssClass: "e-flat"
          }
        }
      ]
    }
  ]
});
treegrid.appendTo("#TreeGrid");
function rowDataBound(args: RowDataBoundEventArgs) {
  if (!(args.data as ITreeData).hasChildRecords) {
    (args.row as HTMLElement).style.backgroundColor = "green";
  }
}
function queryCellInfo(args: QueryCellInfoEventArgs) {
  if (!(args.data as ITreeData).hasChildRecords) {
    if ((args.cell as HTMLElement).classList.contains("e-unboundcell")) {
      ((args.cell as HTMLElement).querySelector(
        ".e-unboundcelldiv"
      ) as HTMLElement).style.display = "none";
    }
  }
}
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#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  font-family: 'Helvetica Neue','calibiri';
  font-size: 14px;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}
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<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Grid</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript Grid Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-treegrid/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-calendars/styles/material.css" rel="stylesheet" />
    
    
    
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='TreeGrid'></div>        
    </div>
</body>
</html>

You can refer to our JavaScript Tree Grid feature tour page for its groundbreaking feature representations. You can also explore our JavaScript Tree Grid example JavaScript Tree Grid example to knows how to present and manipulate data.

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