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Open Add Edit Dialog Dynamically in ASP.NET Core Gantt control

19 Oct 2021 / 1 minute to read

Gantt add and edit dialogs can be opened dynamically by using openAddDialog and openEditDialog methods. The following code example shows how to open add and dialog on separate button click actions.

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<ejs-button id="editDialog" content="Open Edit Dialog" cssClass="e-primary"></ejs-button>
                <ejs-button id="addDialog" content="Open Add Dialog" cssClass="e-primary"></ejs-button>

                <ejs-gantt id='Gantt' dataSource="ViewBag.dataSource" height="450px">
                    <e-gantt-taskfields id="TaskId" name="TaskName" startDate="StartDate" endDate="EndDate" duration="Duration" progress="Progress" child="SubTasks">
                    <e-gantt-editsettings allowAdding="true" allowEditing="true"></e-gantt-editsettings>
				   document.getElementById('editDialog').addEventListener('click', function (args) {
                      var ganttObj = document.getElementById('Gantt').ej2_instances[0];
                   document.getElementById('addDialog').addEventListener('click', function (args) {
                      var ganttObj = document.getElementById('Gantt').ej2_instances[0];
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public IActionResult Index()
    ViewBag.DataSource = GanttData.ProjectNewData();
    return View();

NOTE: We should select any one of the row in Gantt to open the edit dialog.