Critical Path in EJ 1 ASP.NET Core Gantt

The critical path in a project is indicated by a single task or a series of tasks in a project, critical path describes the calculated start date or end date of a project. If a task in a critical path is delayed, then the entire project will be delayed.

The critical path can be enabled in Gantt by using built-in toolbar button or showCriticalPath method.

Using Toolbar Icon

You can enable/disable the critical path in Gantt by using toolbar button, and this button can be enabled in the Gantt toolbar by using the following code example.

  • cshtml
  • <ej-gantt id="ganttSample3" datasource="ViewBag.datasource" 
            <e-gantt-toolbar-settings show-toolbar="true" toolbar-items="@(new List<string>() { "criticalPath" })"></e-gantt-toolbar-settings>


    Using Method

    You can enable the critical path by using showCriticalPath() method with parameter as true. And critical path can be disabled using the same method with parameter as false.

  • html
  • <script>                   
    $("#buttonon").click(function (args) {
                    ganttObj = $("#ganttSample3").data("ejGantt");
    $("#buttonoff").click(function (args) {
                    ganttObj = $("#ganttSample3").data("ejGantt");


    Customizing critical path background

    You can customize the critical task background by setting custom color codes to the critical task elements’ class names,

    Taskbar–.e-ganttchart .e-criticaltaskbar

    Progressbar–.e-ganttchart .e-criticalprogressbar

    Connector line–.e-ganttchart .e-criticalconnectorline

    Connector line left arrow– .e-ganttchart .e-criticalconnectorlineleftarrow

    Connector line right arrow– .e-ganttchart .e-criticalconnectorlinerightarrow

  • html
  • <style>
        .e-ganttchart .e-criticaltaskbar {
                    background-color : #ffb366!important;
                    border-color : gray!important
        .e-ganttchart .e-criticalprogressbar {
                    background-color : #ff99cc!important;
                    border-color : #b35900!important
        .e-ganttchart .e-criticalconnectorline {
                    background-color : #b800e6!important;
        .e-ganttchart .e-criticalconnectorlineleftarrow {
                    border-right-color : #b800e6!important;
        .e-ganttchart .e-criticalconnectorlinerightarrow{
                    border-left-color : #b800e6!important;