JavaScript (ES5)
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Show or Hide columns in Dialog editing in JavaScript (ES5) Grid control

You can show hidden columns or hide visible column’s editor in the dialog while editing the grid record using actionBegin and actionComplete events.

In the actionBegin event, based on requestType as beginEdit or add. We can show or hide the editor by using column.visible property.

In the actionComplete event, based on requestType as save. We can reset the properties back to the column state.

In the below example, we have rendered the grid columns CustomerID as hidden column and ShipCountry as visible column. In the edit mode, we have changed the CustomerID column to visible state and ShipCountry column to hidden state.

Source
Preview
index.js
index.html
ej.grids.Grid.Inject(ej.grids.Toolbar, ej.grids.Edit);
var grid = new ej.grids.Grid({
    dataSource: data,
    toolbar: ['Add', 'Edit', 'Delete'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Dialog' },
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 100, isPrimaryKey: true },
        { field: 'CustomerID', headerText: 'Customer ID', width: 120, visible: false },
        { field: 'Freight', headerText: 'Freight', textAlign: 'Right', editType: 'numericedit', width: 120, format: 'C2' },
        { field: 'ShipCountry', headerText: 'Ship Country', width: 150 }
    ],
    height: 265,
    actionBegin: function (args) {
        if ((args.requestType === 'beginEdit' || args.requestType === 'add')) {
            for (var i = 0; i < this.columns.length; i++) {
                if (this.columns[i].field == "CustomerID") {
                    this.columns[i].visible = true;
                }
                else if (this.columns[i].field == "ShipCountry") {
                    this.columns[i].visible = false;
                }
            }
        }
    },
    actionComplete: function (args) {
        if (args.requestType === 'save') {
            for (var i = 0; i < this.columns.length; i++) {
                if (this.columns[i].field == "CustomerID") {
                    this.columns[i].visible = false;
                }
                else if (this.columns[i].field == "ShipCountry") {
                    this.columns[i].visible = true;
                }
            }
        }
    }
});
grid.appendTo('#Grid');
<!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/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
    <style>
        .e-row[aria-selected="true"] .e-customizedExpandcell {
            background-color: #e0e0e0;
        }
        .e-grid.e-gridhover tr[role='row']:hover {
            background-color: #eee;
        }
        .e-expand::before {
        content: '\e5b8';
    }
    </style>
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="Grid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
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