Context Menu in Blazor DataGrid component

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03 Aug 2021 / 9 minutes to read

The DataGrid has options to show the context menu when right clicked on it. To enable this feature, you need to define either default or custom item in the ContextMenuItems property.

The following table lists the default context menu items,

Items	Description
`AutoFit`	Auto fit the current column.
`AutoFitAll`	Auto fit all columns.
`Edit`	Edit the current record.
`Delete`	Delete the current record.
`Save`	Save the edited record.
`Cancel`	Cancel the edited state.
`Copy`	Copy the selected records.
`PdfExport`	Export the datagrid data as Pdf document.
`ExcelExport`	Export the datagrid data as Excel document.
`CsvExport`	Export the datagrid data as CSV document.
`Group`	Group the current column.
`Ungroup`	Ungroup the current column.
`SortAscending`	Sort the current column in ascending order.
`SortDescending`	Sort the current column in descending order.
`FirstPage`	Go to the first page.
`PrevPage`	Go to the previous page.
`LastPage`	Go to the last page.
`NextPage`	Go to the next page.

The default context menu provides different types of context menu items for the following elements.

Elements	Context Menu Items
Header	AutoFit
Header	AutoFitAll
Header	Group
Header	Ungroup
Header	SortAscending
Header	SortDescending
Content	Edit
Content	Delete
Content	Save
Content	Cancel
Content	Copy
Content	PdfExport
Content	ExcelExport
Content	CsvExport
Pager	FirstPage
Pager	PrevPage
Pager	LastPage
Pager	NextPage

The following sample code demonstrates enabling context menu with its default items,

@using Syncfusion.Blazor.Grids

<SfGrid DataSource="@Orders" AllowSorting="true" AllowPaging="true" AllowExcelExport="true" AllowPdfExport="true" ContextMenuItems="@(new List<object>() { "AutoFit", "AutoFitAll", "SortAscending", "SortDescending","Copy", "Edit", "Delete", "Save", "Cancel","PdfExport", "ExcelExport", "CsvExport", "FirstPage", "PrevPage","LastPage", "NextPage"})">
    <GridPageSettings PageSize="8"></GridPageSettings>
    <GridEditSettings AllowEditing="true" AllowDeleting="true"></GridEditSettings>
    <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="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>
    </GridColumns>
</SfGrid>

@code{
    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),
        }).ToList();
    }

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

The following GIF represents the DataGrid enabled with default context menu items,

The custom context menu items can be added by defining the ContextMenuItems as a collection of ContextMenuItemModel. Actions for these customized items can be defined in the ContextMenuItemClicked event.

The following sample code demonstrates defining custom context menu item and its corresponding action in the ContextMenuItemClicked event,

@using Syncfusion.Blazor.Grids

<SfGrid @ref="DefaultGrid" DataSource="@Orders" AllowPaging="true" ContextMenuItems="@(new List<ContextMenuItemModel>() { new ContextMenuItemModel { Text = "Copy with headers", Target = ".e-content", Id = "copywithheader" } })">
    <GridEvents ContextMenuItemClicked="OnContextMenuClick" TValue="Order"></GridEvents>
    <GridPageSettings PageSize="8"></GridPageSettings>
    <GridColumns>
        <GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" TextAlign="TextAlign.Right" Width="120" IsPrimaryKey="true"></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>
    </GridColumns>
</SfGrid>

@code{
    public List<Order> Orders { get; set; }

    private SfGrid<Order> DefaultGrid;

    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),
        }).ToList();
    }

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

    public void OnContextMenuClick(ContextMenuClickEventArgs<Order> args)
    {
        if (args.Item.Id == "copywithheader")
        {
            this.DefaultGrid.Copy(true);
        }
    }
}

The following image represents the DataGrid enabled with custom context menu item,

DataGrid have an option to use both built-in and custom context menu items at same time.

The following sample code demonstrates defining built-in and custom context menu items and custom context menu item corresponding action in the ContextMenuItemClicked event,

@using Syncfusion.Blazor.Grids

<SfGrid @ref="DefaultGrid" DataSource="@Orders" AllowPaging="true" ContextMenuItems="@(new List<Object>() { "Copy", new ContextMenuItemModel { Text = "Copy with headers", Target = ".e-content", Id = "copywithheader" } })">
    <GridEvents ContextMenuItemClicked="OnContextMenuClick" TValue="Order"></GridEvents>
    <GridPageSettings PageSize="8"></GridPageSettings>
    <GridColumns>
        <GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" TextAlign="TextAlign.Right" Width="120" IsPrimaryKey="true"></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>
    </GridColumns>
</SfGrid>

@code{
    public List<Order> Orders { get; set; }

    private SfGrid<Order> DefaultGrid;

    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),
        }).ToList();
    }

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

    public void OnContextMenuClick(ContextMenuClickEventArgs<Order> args)
    {
        if (args.Item.Id == "copywithheader")
        {
            this.DefaultGrid.Copy(true);
        }
    }
}

The sub context menu items can be added by defining the collection of MenuItems for Items Property in ContextMenuItems Actions for these customized items can be defined in the ContextMenuItemClicked event.

The following sample code demonstrates defining sub context menu item and its corresponding action in the ContextMenuItemClicked event,

@using Syncfusion.Blazor.Grids
@using Syncfusion.Blazor.Navigations

<SfGrid @ref="DefaultGrid" DataSource="@Orders" AllowPaging="true" ContextMenuItems="@(new List<ContextMenuItemModel>() { new ContextMenuItemModel { Text = "Clipboard", Target = ".e-content", Id = "clipboard", Items = new List<MenuItem>() { new MenuItem { Text = "Copy", Id = "copy" }, new MenuItem { Text ="CopyWithHeader", Id ="copywithheader" } } } })">
    <GridEvents ContextMenuItemClicked="OnContextMenuClick" TValue="Order"></GridEvents>
    <GridPageSettings PageSize="8"></GridPageSettings>
    <GridColumns>
        <GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" TextAlign="TextAlign.Right" Width="120" IsPrimaryKey="true"></GridColumn>
        <GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" TextAlign="TextAlign.Right" Width="120" IsPrimaryKey="true"></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>
    </GridColumns>
</SfGrid>

@code{
    public List<Order> Orders { get; set; }

    private SfGrid<Order> DefaultGrid;

    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),
        }).ToList();
    }

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

    public void OnContextMenuClick(ContextMenuClickEventArgs<Order> args)
    {
        if (args.Item.Id == "copywithheader")
        {
            this.DefaultGrid.Copy(true);
        }
        if (args.Item.Id == "copy")
        {
            this.DefaultGrid.Copy(false);
        }
    }
}

Context Menu can be prevented for specific columns using ContextMenuOpen event of DataGrid. This is event will be triggered before opening the ContextMenu. We can prevent the context menu from opening by defining the Cancel arguments of ContextMenuOpen to false.

The following sample code demonstrates the disabling the context for specific column using event arguments of ContextMenuOpen event,

@using Syncfusion.Blazor.Grids

<SfGrid @ref="DefaultGrid" DataSource="@Orders" AllowPaging="true" ContextMenuItems="@(new List<ContextMenuItemModel>() { new ContextMenuItemModel { Text = "Copy with headers", Target = ".e-content", Id = "copywithheader" } })">
    <GridEvents ContextMenuItemClicked="OnContextMenuClick" ContextMenuOpen="OnContextMenuOpen" TValue="Order"></GridEvents>
    <GridPageSettings PageSize="8"></GridPageSettings>
    <GridColumns>
        <GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" TextAlign="TextAlign.Right" Width="120" IsPrimaryKey="true"></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>
    </GridColumns>
</SfGrid>

@code{
    public List<Order> Orders { get; set; }

    private SfGrid<Order> DefaultGrid;

    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),
        }).ToList();
    }

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

    public void OnContextMenuOpen(ContextMenuOpenEventArgs<Order> Args)
    {
        if (Args.Column.Field == "OrderDate")
        {
            Args.Cancel = true; // to prevent the context  menu from opening
        }
    }

    public void OnContextMenuClick(ContextMenuClickEventArgs<Order> args)
    {
        if (args.Item.Id == "copywithheader")
        {
            this.DefaultGrid.Copy(true);
        }
    }
}

You can enable or disable context menu items using the Disabled property. Here, we enable and disable the Edit context menu items in ContextMenuOpen event of DataGrid. This is event will be triggered before opening the ContextMenu. We can disabled the context menu item by defining the corresponding context menu items Disabled property as true.

The following sample code demonstrates how to enable or disable context menu items dynamically in Grid using event arguments of ContextMenuOpen event,

@using Syncfusion.Blazor.Grids

<SfGrid DataSource="@Orders" AllowPaging="true" ContextMenuItems="@(new List<object>() { "Edit", "Delete", "Save", "Cancel","PdfExport", "ExcelExport", "CsvExport", "FirstPage", "PrevPage","LastPage", "NextPage"})">
    <GridEvents ContextMenuOpen="OnContextMenuOpen" TValue="Order"></GridEvents>
    <GridPageSettings PageSize="8"></GridPageSettings>
    <GridEditSettings AllowEditing="true" AllowDeleting="true"></GridEditSettings>
    <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="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>
    </GridColumns>
</SfGrid>

@code{
    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),
        }).ToList();
    }

    public void OnContextMenuOpen(ContextMenuOpenEventArgs<Order> Args)
    {
#pragma warning disable BL0005
        if (Args.Column.Field == "OrderDate")  // you can check condition based on your requirement
        {
            Args.ContextMenuObj.Items[0].Disabled = true; // to disable edit context menu item
        }
        else
        {
            Args.ContextMenuObj.Items[0].Disabled = false; // to enable edit context menu item
        }
#pragma warning restore BL0005
    }

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

You can refer to our Blazor DataGrid feature tour page for its groundbreaking feature representations. You can also explore our Blazor DataGrid example to understand how to present and manipulate data.

Contents

Custom context menu items
Built-in and Custom context menu items
Sub context menu items in DataGrid
Disable the Context menu for specific columns in DataGrid
Disable context menu items dynamically in DataGrid

Contents

Custom context menu items
Built-in and Custom context menu items
Sub context menu items in DataGrid
Disable the Context menu for specific columns in DataGrid
Disable context menu items dynamically in DataGrid

Please provide additional information

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Context Menu in Blazor DataGrid component

Custom context menu items

Built-in and Custom context menu items

Sub context menu items in DataGrid

Disable the Context menu for specific columns in DataGrid

Disable context menu items dynamically in DataGrid