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[Solved] Grid - DockViewState Conflict

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Dock

This is a migrated thread and some comments may be shown as answers.

Abdullah Önden asked on 21 Jan 2010, 05:59 PM

Hi

I'm using a couple of grids in my docks. When I try to enable Dock's EnableViewState function, I figured out I can't reach my grid's item.DataItem values anymore. What's the reason? Any help?

Here's my delete function:

    
                protected void btnDelete_Click(object sender, EventArgs e) 
        
                { 
        
                    foreach (GridItem item in this.grdList.SelectedItems) 
        
                    { 
        
                        ShoppingCartItem cart = (ShoppingCartItem)item.DataItem; 
        
                        SiteManager.Params.CurrentUserShoppingCart.Remove(cart); 
        
                    } 
        
                    RefreshLists(); 
        
                }

Here's my init:

    
                    protected override void OnInit(System.EventArgs e) 
        
                    { 
        
                        //find dock layouts

                        DockLayout dockLayout = (DockLayout)FindControl("dockLayout"); 
        
                        dockLayout.EnableViewState = false; 
        
                        dockLayout.StoreLayoutInViewState = false; 
        
                        PrepareLayoutDocks(dockLayout); 
        
                        //this.EnableViewState = false; 
        
                        base.OnInit(e); 
        
                    }

1 Answer, 1 is accepted

answered on 26 Jan 2010, 12:11 PM

Hi Abdullah,

I tried to reproduce the problem locally by creating a sample project, but with no success. The item.DataItem always returns null regardless of whether the ViewState is enabled or not. Here is the full source code of the project:

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1" runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

<div>

<telerik:RadDockLayout ID="RadDockLayout1" runat="server">

<telerik:RadDockZone ID="RadDockZone1" runat="server" MinHeight="300px" Width="300px">

<telerik:RadDock ID="RadDock1" runat="server" Width="300px" Title="RadDock-Title">

<ContentTemplate>

<telerik:RadGrid ID="GridView1" runat="server" OnNeedDataSource="OnNeedDataSource"

AllowMultiRowSelection="true">

<MasterTableView>

<Columns>

<telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" />

<telerik:GridButtonColumn ConfirmText="Delete this product?" ConfirmDialogType="RadWindow"

ConfirmTitle="Delete" ButtonType="ImageButton" CommandName="Delete" Text="Delete"

UniqueName="DeleteColumn">

<ItemStyle HorizontalAlign="Center" CssClass="MyImageButton" />

</telerik:GridButtonColumn>

</Columns>

</MasterTableView>

<ClientSettings EnableRowHoverStyle="true">

<Selecting AllowRowSelect="True" />

</ClientSettings>

</telerik:RadGrid>

</ContentTemplate>

</telerik:RadDock>

</telerik:RadDockZone>

</telerik:RadDockLayout>

</div>

<asp:Button ID="Button1" runat="server" Text="Delete" OnClick="btnDelete_Click" />

<asp:Label ID="Label1" runat="server"></asp:Label>

</form>

</body>

</html>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Telerik.Web.UI;

public partial class Default2 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected override void OnInit(System.EventArgs e)

{

//find dock layouts

//RadDockLayout dockLayout = (RadDockLayout)FindControl("RadDockLayout1");

//dockLayout.EnableViewState = false;

//dockLayout.StoreLayoutInViewState = false;

//PrepareLayoutDocks(dockLayout);

//this.EnableViewState = false;

base.OnInit(e);

}

protected void btnDelete_Click(object sender, EventArgs e)

{

foreach (GridItem item in this.GridView1.SelectedItems)

{

Label1.Text = item.DataItem.ToString();

}

protected void OnNeedDataSource(object sender, GridNeedDataSourceEventArgs e)

{

GridView1.DataSource = new string[] { "0", "1", "2", "3", "4", "0", "1", "2", "3", "4", "0", "1", "2", "3", "4", "0", "1", "2", "3", "4", "0", "1", "2", "3", "4" };

}

Could you please send us a fully working sample that demonstrates the issue? Once we have a better view over the problem we can provide an adequate solution.

Regards,
Pero
the Telerik team

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