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Adding custom headers in Blazor DataManager component

Custom headers can be added to the SfDataManager request using its Headers property.

The following sample code demonstrates adding custom headers to the SfDataManager request which is bound with the DataGrid component,

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Data
@using Syncfusion.Blazor.Grids

<SfGrid TValue="Order" AllowPaging="true">
    <GridPageSettings PageSize="10"></GridPageSettings>
    <SfDataManager Headers=@HeaderData Url="" Adaptor="Adaptors.WebApiAdaptor"></SfDataManager>
        <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="150"></GridColumn>
        <GridColumn Field=@nameof(Order.OrderDate) HeaderText=" Order Date" Format="d" Type="ColumnType.Date" TextAlign="TextAlign.Right" Width="130"></GridColumn>
        <GridColumn Field=@nameof(Order.Freight) HeaderText="Freight" Format="C2" TextAlign="TextAlign.Right" Width="120"></GridColumn>

    public class Data
        public string Grid;

    private IDictionary<string, string> HeaderData = new Dictionary<string, string>();

    public class Order
        public int? OrderID { get; set; }
        public string CustomerID { get; set; }
        public DateTime? OrderDate { get; set; }
        public double? Freight { get; set; }