Adding new tasks in Blazor Gantt Chart Component

28 Jun 20229 minutes to read

Tasks can be dynamically added to the Gantt Chart project by enabling the GanttEditSettings.AllowAdding property.

Toolbar

A row can be added to the Gantt Chart component from the toolbar while the GanttEditSettings.AllowAdding property is set to true. After clicking the toolbar add icon, you should provide the task information in the add dialog.

@using Syncfusion.Blazor.Gantt
<SfGantt DataSource="@TaskCollection" Toolbar="@(new List<string>() { "Add" })" Height="450px" Width="900px">
    <GanttTaskFields Id="TaskId" Name="TaskName" StartDate="StartDate" EndDate="EndDate" Duration="Duration" Progress="Progress" ParentID="ParentId">
    </GanttTaskFields>
    <GanttEditSettings AllowAdding="true"></GanttEditSettings>
</SfGantt>

@code{
    private List<TaskData> TaskCollection { get; set; }
    protected override void OnInitialized()
    {
        this.TaskCollection = GetTaskCollection();
    }

    public class TaskData
    {
        public int TaskId { get; set; }
        public string TaskName { get; set; }
        public DateTime StartDate { get; set; }
        public DateTime EndDate { get; set; }
        public string Duration { get; set; }
        public int Progress { get; set; }
        public int? ParentId { get; set; }
    }

    public static List<TaskData> GetTaskCollection()
    {
        List<TaskData> Tasks = new List<TaskData>()
        {
            new TaskData() { TaskId = 1, TaskName = "Project initiation", StartDate = new DateTime(2022, 04, 05), EndDate = new DateTime(2022, 04, 21), },
            new TaskData() { TaskId = 2, TaskName = "Identify Site location", StartDate = new DateTime(2022, 04, 05), Duration = "0", Progress = 30, ParentId = 1 },
            new TaskData() { TaskId = 3, TaskName = "Perform soil test", StartDate = new DateTime(2022, 04, 05), Duration = "4", Progress = 40, ParentId = 1 },
            new TaskData() { TaskId = 4, TaskName = "Soil test approval", StartDate = new DateTime(2022, 04, 05), Duration = "0", Progress = 30, ParentId = 1 },
            new TaskData() { TaskId = 5, TaskName = "Project estimation", StartDate = new DateTime(2022, 04, 06), EndDate = new DateTime(2022, 04, 21), },
            new TaskData() { TaskId = 6, TaskName = "Develop floor plan for estimation", StartDate = new DateTime(2022, 04, 06), Duration = "3", Progress = 30, ParentId = 5 },
            new TaskData() { TaskId = 7, TaskName = "List materials", StartDate = new DateTime(2022, 04, 06), Duration = "3", Progress = 40, ParentId = 5 },
            new TaskData() { TaskId = 8, TaskName = "Estimation approval", StartDate = new DateTime(2022, 04, 06), Duration = "0", Progress = 30, ParentId = 5 }
        };
        return Tasks;
    }
}

Adding New Task in Blazor Gantt Chart

By default, a new row will be added to the top most row in the Gantt Chart component.

Context menu

A row can also be added above, below or child of the selected row by using context menu support. For this, you need to enable the property EnableContextMenu.

@using Syncfusion.Blazor.Gantt
<SfGantt DataSource="@TaskCollection" Height="450px" EnableContextMenu="true" Width="900px" HighlightWeekends="true">
    <GanttTaskFields Id="TaskId" Name="TaskName" StartDate="StartDate" EndDate="EndDate" Duration="Duration" Progress="Progress"
        Dependency="Predecessor" ParentID="ParentId"></GanttTaskFields>
    <GanttEditSettings AllowAdding="true"></GanttEditSettings>
</SfGantt>

@code{
    private List<TaskData> TaskCollection { get; set; }
    protected override void OnInitialized()
    {
        this.TaskCollection = GetTaskCollection();
    }
    public class TaskData
    {
        public int TaskId { get; set; }
        public string TaskName { get; set; }
        public DateTime StartDate { get; set; }
        public DateTime EndDate { get; set; }
        public string Duration { get; set; }
        public double Progress { get; set; }
        public string Predecessor { get; set; }
        public int? ParentId { get; set; }
    }

    public static List<TaskData> GetTaskCollection()
    {
        List<TaskData> Tasks = new List<TaskData>() {
            new TaskData() { TaskId = 1, TaskName = "Project initiation", StartDate = new DateTime(2022, 04, 05), EndDate = new DateTime(2022, 04, 21) },
            new TaskData() { TaskId = 2, TaskName = "Identify Site location", StartDate = new DateTime(2022, 04, 05), Duration = "0", Progress = 30, ParentId = 1 },
            new TaskData() { TaskId = 3, TaskName = "Perform soil test", StartDate = new DateTime(2022, 04, 05), Duration = "4", Progress = 40, ParentId = 1 },
            new TaskData() { TaskId = 4, TaskName = "Soil test approval", StartDate = new DateTime(2022, 04, 05), Duration = "3", Progress = 30, Predecessor = "2", ParentId = 1 },
            new TaskData() { TaskId = 5, TaskName = "Project estimation", StartDate = new DateTime(2022, 04, 06), EndDate = new DateTime(2022, 04, 21) },
            new TaskData() { TaskId = 6, TaskName = "Develop floor plan for estimation", StartDate = new DateTime(2022, 04, 06), Duration = "3", Progress = 30, ParentId = 5 },
            new TaskData() { TaskId = 7, TaskName = "List materials", StartDate = new DateTime(2022, 04, 06), Duration = "3", Progress = 40, ParentId = 5 },
            new TaskData() { TaskId = 8, TaskName = "Estimation approval", StartDate = new DateTime(2022, 04, 06), Duration = "0", Progress = 30, Predecessor = "6", ParentId = 5 }
        };
        return Tasks;
    }
}

Using method

You can add rows to the Gantt Chart component dynamically using the AddRecordAsync method and you can define the add position of the default new record by using the RowPosition property. You can also pass the RowIndex as an additional parameter.

  • Top of all the rows.
  • Bottom to all the existing rows.
  • Above the selected row.
  • Below the selected row.
  • As child to the selected row.
@using Syncfusion.Blazor.Gantt
@using Syncfusion.Blazor.Buttons
<SfButton @onclick="AddRow">Add Row</SfButton>
<SfGantt @ref="Gantt" DataSource="@TaskCollection" Height="450px" Width="900px">
    <GanttTaskFields Id="TaskId" Name="TaskName" StartDate="StartDate" EndDate="EndDate" Duration="Duration" Progress="Progress" ParentID="ParentId">
    </GanttTaskFields>
    <GanttEditSettings AllowAdding="true"></GanttEditSettings>
</SfGantt>

@code{
    public SfGantt<TaskData> Gantt;
    public TaskData record = new TaskData() { TaskId = 9, TaskName = "New Added Record", StartDate = new DateTime(2019, 04, 05), Duration = "3", Progress = 50};

    public void AddRow()
    {
    this.Gantt.AddRecordAsync(record, 2, RowPosition.Below);
    }
    private List<TaskData> TaskCollection { get; set; }
    protected override void OnInitialized()
    {
        this.TaskCollection = GetTaskCollection();
    }

    public class TaskData
    {
        public int TaskId { get; set; }
        public string TaskName { get; set; }
        public DateTime StartDate { get; set; }
        public DateTime EndDate { get; set; }
        public string Duration { get; set; }
        public int Progress { get; set; }
        public int? ParentId { get; set; }
    }

    public static List <TaskData> GetTaskCollection() {
    List <TaskData> Tasks = new List <TaskData> () {
        new TaskData() { TaskId = 1, TaskName = "Project initiation", StartDate = new DateTime(2022, 04, 05), EndDate = new DateTime(2022, 04, 21) },
        new TaskData() { TaskId = 2, TaskName = "Identify Site location", StartDate = new DateTime(2022, 04, 05), Duration = "0", Progress = 30, ParentId = 1 },
        new TaskData() { TaskId = 3, TaskName = "Perform soil test", StartDate = new DateTime(2022, 04, 05), Duration = "4", Progress = 40, ParentId = 1 },
        new TaskData() { TaskId = 4, TaskName = "Soil test approval", StartDate = new DateTime(2022, 04, 05), Duration = "0", Progress = 30, ParentId = 1 },
        new TaskData() { TaskId = 5, TaskName = "Project estimation", StartDate = new DateTime(2022, 04, 06), EndDate = new DateTime(2022, 04, 21) },
        new TaskData() { TaskId = 6, TaskName = "Develop floor plan for estimation", StartDate = new DateTime(2022, 04, 06), Duration = "3", Progress = 30, ParentId = 5 },
        new TaskData() { TaskId = 7, TaskName = "List materials", StartDate = new DateTime(2022, 04, 06), Duration = "3", Progress = 40, ParentId = 5 },
        new TaskData() { TaskId = 8, TaskName = "Estimation approval", StartDate = new DateTime(2022, 04, 06), Duration = "0", Progress = 30, ParentId = 5 }
    };
    return Tasks;
}
}

Adding New Record in Blazor Gantt Chart