Articles in this section
Category / Section

How to customize the dialog fields in ASP.NET Web Forms Gantt?

1 min read

In Gantt control, user can enable or disable required fields in both edit dialog box and add dialog box for all the predefined columns and custom columns with the help of “EditDialogFields” and “AddDialogFields” property. The provided fields in the “EditDialogFields” and “AddDialogFields” property alone will be displayed in the dialog box of the Gantt chart.

Please refer the following code snippets for more details.

Code snippets:


<form id="form1" runat="server"  
<ej:Gantt ID="Gantt" runat="server"  
<ej:AddDialogField Field="Id" />
<ej:AddDialogField Field="Name" />
<ej:AddDialogField Field="StartDate" />
<ej:AddDialogField Field="Duration" />
<ej:EditDialogField Field="Name" />
<ej:EditDialogField Field="StartDate" />
<ej:EditDialogField Field="ExpectedDate" /> <%--To display custom column--%>
function Load(args) {
var columns = this.getColumns();
columns.splice(2, 0,
field: "ExpectedDate",
headerText: "Expected Date ",
editType: "stringedit",
mappingName: "ExpectedDate", //Provide this mapping name
width: "180px"

The following screen shots shows the output of the above code snippets.

Add Dialog Window: (General Tab)

Customize the general tab fields for add dialog.

Edit Dialog Window: (General Tab)

Customize the general tab fields for edit dialog.

Edit Dialog Window: (Tab for custom column)

Customize the custom fields tab for edit dialog.


The “DisplayInGeneralTab” property in Edit Dialog fields and Add dialog fields is required to provide the support for displaying the fields of custom columns in the General tab of dialog box. By default the value of this property will be false.

In the above Edit dialog box, to display the field of “ExpectedDate” custom column in General Tab, the following code snippets can be used in “EditDialogFields” property.

Code snippets:


<ej:EditDialogField Field="Name" />
<ej:EditDialogField Field="StartDate" />
<ej:EditDialogField Field="ExpectedDate" DisplayInGeneralTab="true"/> <%--To display this custom column field in General Tab--%>

The following screen shots shows the output of the above code snippets.

Customize the general tab of edit dialog with custom field column.


A new version of Essential Studio for ASP.NET is available. Versions prior to the release of Essential Studio 2014, Volume 2 will now be referred to as a classic versions.The new ASP.NET suite is powered by Essential Studio for JavaScript providing client-side rendering of HTML 5-JavaScript controls, offering better performance, and better support for touch interactivity. The new version includes all the features of the old version, so migration is easy.

The Classic controls can be used in existing projects; however, if you are starting a new project, we recommend using the latest version of Essential Studio for ASP.NET. Although Syncfusion will continue to support all Classic Versions, we are happy to assist you in migrating to the newest edition.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial to check out our other controls. If you have any queries or require clarifications, please let us know in the comments section below.

You can also contact us through our support forumsDirect-Trac, or feedback portal. We are always happy to assist you!

Did you find this information helpful?
Help us improve this page
Please provide feedback or comments
Comments (0)
Please sign in to leave a comment