Saving a new row at a particular index of the blazor datagrid

4 Aug 20212 minutes to read

By default, a newly added row will be saved at the top of the datagrid. You can change it by setting the args.Index in OnActionBegin handler.

The following sample code demonstrates changing the save index of the new row that gets added in the DataGrid component,

@using Syncfusion.Blazor.Grids
@using Action = Syncfusion.Blazor.Grids.Action

<SfGrid @ref="GridInstance" AllowPaging="true" DataSource="@Orders" Toolbar="@(new List<string>() { "Add","Edit","Delete","Update","Cancel" })">
    <GridEditSettings AllowAdding="true" AllowEditing="true" AllowDeleting="true" NewRowPosition="NewRowPosition.Bottom"></GridEditSettings>
    <GridEvents OnActionBegin="OnActionBegin" TValue="Order"></GridEvents>
    <GridColumns>
        <GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" IsPrimaryKey="true" TextAlign="TextAlign.Right" Width="120"></GridColumn>
        <GridColumn Field=@nameof(Order.CustomerID) HeaderText="Customer Name" Width="120"></GridColumn>
        <GridColumn Field=@nameof(Order.OrderDate) HeaderText=" Order Date" EditType="EditType.DatePickerEdit" Format="d" TextAlign="TextAlign.Right" Width="130" Type="ColumnType.Date"></GridColumn>
        <GridColumn Field=@nameof(Order.Freight) HeaderText="Freight" Format="C2" TextAlign="TextAlign.Right" EditType="EditType.NumericEdit" Width="120"></GridColumn>
        <GridColumn Field=@nameof(Order.ShipCountry) HeaderText="Ship Country" EditType="EditType.DropDownEdit" Width="150"></GridColumn>
    </GridColumns>
</SfGrid>

@code{
    SfGrid<Order> GridInstance { get; set; }
    public List<Order> Orders { get; set; }
    protected override void OnInitialized()
    {
        Orders = Enumerable.Range(1, 75).Select(x => new Order()
        {
            OrderID = 1000 + x,
            CustomerID = (new string[] { "ALFKI", "ANANTR", "ANTON", "BLONP", "BOLID" })[new Random().Next(5)],
            Freight = 2.1 * x,
            OrderDate = DateTime.Now.AddDays(-x),
            ShipCountry = (new string[] { "USA", "UK", "CHINA", "RUSSIA", "INDIA" })[new Random().Next(5)]
        }).ToList();
    }
    public void OnActionBegin(ActionEventArgs<Order> args)
    {
        if (args.RequestType.Equals(Action.Save) && args.Action == "Add")
        {
            //Here you can set the custom index for the saved new row. Below calculation save the new row as last row of current page.
            args.Index = (GridInstance.PageSettings.CurrentPage * GridInstance.PageSettings.PageSize) - 1;
        }
    }
    public class Order
    {
        public int? OrderID { get; set; }
        public string CustomerID { get; set; }
        public DateTime? OrderDate { get; set; }
        public double? Freight { get; set; }
        public string ShipCountry { get; set; }
    }
}