Hi,

i have an issue with maintaining state of template column textbox on paging in radgrid.
I am storing the data in session and then on need datasource event trying to get the data again from session.
But this does not help.
Please help me its urgent issue.please refer code below-






<telerik:RadScriptManager ID="RadScriptManager1" runat="server">
    </telerik:RadScriptManager>
    <telerik:RadGrid ID="grChecklist1" runat="server"  AutoGenerateColumns="false"
            onneeddatasource="grChecklist1_NeedDataSource" 
        onpageindexchanged="grChecklist1_PageIndexChanged" >
   <MasterTableView  AllowPaging="true" AutoGenerateColumns="false"  PageSize="5"> 
    <Columns>
    <telerik:GridTemplateColumn DataField="Number" HeaderText="Number" Visible="true">
    <ItemTemplate>
         <asp:TextBox ID="txtNumber" runat="server" Text='<%#Bind("Number")%>'/>
    </ItemTemplate>
   </telerik:GridTemplateColumn>
    <telerik:GridTemplateColumn DataField="TaskDescription" HeaderText="TaskDescription" Visible="true">
    <ItemTemplate>
         <asp:TextBox ID="txtTaskDescription" runat="server" Text='<%#Bind("TaskDescription")%>' />
    </ItemTemplate>
   </telerik:GridTemplateColumn>
   </Columns>

</MasterTableView>
</telerik:RadGrid>
   

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                LoadDetails();
            }
        }

        private void LoadDetails()
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("Number",typeof(string));
            dt.Columns.Add("TaskDescription", typeof(string));
            dt.Rows.Add("1", "task1");
            dt.Rows.Add("2", "task2");
            dt.Rows.Add("3", "task3");
            dt.Rows.Add("4", "task4");
            dt.Rows.Add("5", "task5");
            dt.Rows.Add("6", "task6");
            dt.Rows.Add("7", "task7");
            //grChecklist.DataSource = dt;
           // grChecklist.DataBind();
            Session["dt"] = dt;

        }

        private void RefreshSessionState()
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("Number", typeof(string));
            dt.Columns.Add("TaskDescription", typeof(string));
            
            foreach (GridDataItem item in grChecklist1.Items)
            {
              string number=(item.FindControl("txtNumber") as TextBox).Text;
              string task = (item.FindControl("txtTaskDescription") as TextBox).Text;
              dt.Rows.Add(number,task);
            }
            if (Session["dt"] != null)
                Session.Remove("dt");
            Session["dt"] = dt;
        }

       

        protected void grChecklist1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
        {
           // RefreshSessionState();
            grChecklist1.DataSource = (DataTable)Session["dt"];

        }

        protected void grChecklist1_PageIndexChanged(object sender, GridPageChangedEventArgs e)
        {
            grChecklist1.AllowPaging = false;
            grChecklist1.Rebind();
           // RefreshSessionState();
           
            grChecklist1.CurrentPageIndex = e.NewPageIndex;
            grChecklist1.AllowPaging = true;
            grChecklist1.Rebind();
        }
    }

Hi,
How to Maintain the state(userid) of checked records  during paging in rad grid?
below is my code for reference.
and
Help needed,
Thanks

I posted this question on StackOverflow: http://stackoverflow.com/questions/26935565/cannot-read-property-length-of-null-using-sender-set-selectedtogglestateinde

It would appear that this telerik thread holds some relevance: http://www.telerik.com/forums/radbutton-javascript-error

Note this issue is in the same project as the RadCombo thread I made: http://www.telerik.com/forums/client-side-eventargs-are-mutable 

Where 'navigating' the client state (control state or view state) using either sender or the event argument is not an issue.



If you could answer this question on SO, I would be greatful, but I do have a general question for this thread post. What is the underline mechanics of how telerik uses the client functions 'get_selectedToggleStateIndex()' or 'get_toggleStates()'.. what is '_functionality' and why is it null in my implementation (i.e. nested function as a promptcallback function)?

Hi,

I'm using a GridTemplateColumn with an Image control in ItemTemplate. I'm using the ItemDataBound event to set the Image background, this all works fine. However when I click on a column to sort all the text columns are sorted correctly but the images do not move.

Here is my code:

ASPX:

NeedDataSource and ItemDataBound events:


Any sugest how I can fix that problem?

Thanks

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"Error: Sys.ArgumentException: Cannot deserialize empty string.
Parameter name: data
    at Function.Error$create (http://172.16.17.13/TPS/ScriptResource.axd?d=FXG2eRlUct0x2YANPPo-8ilEesFRotmWUZTTtTbR6ITuuZj3oR3zlBLe_w9PcTm80&t=7eabb20b:847:15)
    at Object.Sys._errorArgument (http://172.16.17.13/TPS/ScriptResource.axd?d=FXG2eRlUct0x2YANPPo-8ilEesFRotmWUZTTtTbR6ITuuZj3oR3zlBLe_w9PcTm80&t=7eabb20b:821:21)
    at Function.Error$argument (http://172.16.17.13/TPS/ScriptResource.axd?d=FXG2eRlUct0x2YANPPo-8ilEesFRotmWUZTTtTbR6ITuuZj3oR3zlBLe_w9PcTm80&t=7eabb20b:870:16)
    at eval (eval at evaluate (unknown source), <anonymous>:1:7)
    at Object.InjectedScript._evaluateOn (<anonymous>:730:39)
    at Object.InjectedScript._evaluateAndWrap (<anonymous>:669:52)
    at Object.InjectedScript.evaluateOnCallFrame (<anonymous>:781:21)
    at http://172.16.17.13/TPS/ScriptResource.axd?d=gPSyjbOxvf933YlPqlpl0YmZadBWoP66sOat4oEG8MTKCQNKKtGEnOjuOE0F3Kzm7F4jqlZABy0dzDopQVEKhQ2&t=ffffffff97e4f358:3:9011"

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