Spread ASP.NET 14
Spread for ASP.NET 14 Product Documentation / Developer's Guide / Customizing User Interaction / Customizing Interaction with the Overall Component / Adding a Context Menu
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    Adding a Context Menu
    In This Topic

    You can display a Spread context menu when right-clicking on the Spread control. The context menu can be displayed when the user right-clicks on the column header, row header, or viewport area (data area and empty area).

    You can add menu items to the menu and set the height or other properties. Specify the type of menu with the ContextMenuType enumeration. You can create a menu using markup code, the ContextMenus property in the Properties window, or server code.

    The CommandArgument and CommandName properties are used to separate which menu item is clicked in code. So in the MenuItemClicked event on the server side you could add code such as switch(eventArgs.SelectedItem.CommandName) or switch(eventArgs.SelectedItem.CommandArgument).

    Spread Context Menu

    Using the Properties Window

    1. In the Properties windows select Spread.
    2. Under the Behavior section select the ContextMenus property.
    3. Use the ContextMenu Collection editor to add menus, menu items, and set any menu properties.
    4. Click OK when finished.

    Using Code

    1. Create a viewport menu using markup or the ContextMenus property in the property window at design time.
    2. Set the EnableContextMenu property to true.
    3. Create a row header menu with code.

    Example

    This example code creates one menu at design time and one menu at run time.

    Code
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    //Markup code

    <ContextMenus>
            <FarPoint:ContextMenu Type="Viewport">
              <Items>
                <FarPoint:MenuItem Enabled="True" ImageUrl="http://linktoimagehere/abc.jpc" Text="Menu item 1">
                    <ItemTemplate>
                    <asp:TextBox ID="bac" runat="server" />
                    </ItemTemplate>
                </FarPoint:MenuItem>
                <FarPoint:MenuItem Text="Sort" ImageUrl="http://linktoimagehere/abc.jpc">
                    <ChildItems >                 
                      <FarPoint:MenuItem  Text="Child Item1"  ImageUrl="http://avc/abc.jpc"></FarPoint:MenuItem>
                      <FarPoint:MenuItem Text="Child Item2"></FarPoint:MenuItem>
                    </ChildItems>
                </FarPoint:MenuItem>
                <FarPoint:MenuItem Enabled="True" ImageUrl="http://linktoimagehere/abc.jpc">Menu item 3</FarPoint:MenuItem>
              </Items>
            </FarPoint:ContextMenu>
          </ContextMenus>

    C#
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    protected void Page_Load(object sender, System.EventArgs e)
    {
    if (this.IsPostBack) return;
    FpSpread1.EnableContextMenu = true;
    //Create this viewport menu using markup or the ContextMenus property in the property window
    FarPoint.Web.Spread.ContextMenu viewportMenu = FpSpread1.ContextMenus[FarPoint.Web.Spread.ContextMenuType.Viewport];
    FarPoint.Web.Spread.MenuItem customViewportItem = new FarPoint.Web.Spread.MenuItem("Viewport item 1");
    customViewportItem.ChildItems.Add(new FarPoint.Web.Spread.MenuItem("Child item 1"));
    customViewportItem.ChildItems.Add(new FarPoint.Web.Spread.MenuItem("Child item 2"));
    viewportMenu.Items.Add(customViewportItem);

    //This row header menu is created here (no markup or design properties)
    FarPoint.Web.Spread.ContextMenu rowHeaderContextMenu = new FarPoint.Web.Spread.ContextMenu();
    rowHeaderContextMenu.Type = FarPoint.Web.Spread.ContextMenuType.RowHeader;
    FarPoint.Web.Spread.MenuItem rowHeaderItem = new FarPoint.Web.Spread.MenuItem("RowHeader item 1");
    rowHeaderItem.ChildItems.Add(new FarPoint.Web.Spread.MenuItem("Child item 1"));
    rowHeaderItem.ChildItems.Add(new FarPoint.Web.Spread.MenuItem("Child item 2"));
    rowHeaderContextMenu.Items.Add(rowHeaderItem);
    FpSpread1.ContextMenus.Add(rowHeaderContextMenu);
    }

    VB
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    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    If (IsPostBack) Then
        Return
    End If
    FpSpread1.EnableContextMenu = True
    'Create this viewport menu using markup or the ContextMenus property in the property window
    Dim viewportMenu As FarPoint.Web.Spread.ContextMenu = FpSpread1.ContextMenus(FarPoint.Web.Spread.ContextMenuType.Viewport)
    Dim customViewportItem As New FarPoint.Web.Spread.MenuItem("Viewport item 1")
    customViewportItem.ChildItems.Add(New FarPoint.Web.Spread.MenuItem("Child item 1"))
    customViewportItem.ChildItems.Add(New FarPoint.Web.Spread.MenuItem("Child item 2"))
    viewportMenu.Items.Add(customViewportItem)

    'This row header menu is created here (no markup or design properties) 
    Dim rowHeaderContextMenu As New FarPoint.Web.Spread.ContextMenu()
    rowHeaderContextMenu.Type = FarPoint.Web.Spread.ContextMenuType.RowHeader
    Dim rowHeaderItem As New FarPoint.Web.Spread.MenuItem("RowHeader item 1")
    rowHeaderItem.ChildItems.Add(New FarPoint.Web.Spread.MenuItem("Child item 1"))
    rowHeaderItem.ChildItems.Add(New FarPoint.Web.Spread.MenuItem("Child item 2"))
    rowHeaderContextMenu.Items.Add(rowHeaderItem)
    FpSpread1.ContextMenus.Add(rowHeaderContextMenu)
    End Sub

    See Also