Asp.net/C# Get repeater row data through checkbox

Question

 

Hello i have a repeater that will present data as a table with checkbox for each row, so i want to show the checked rows data when a button is clicked.

 

.aspx code:

 

"rptItems" runat="server">

           class="table table-bordered table-hover table-responsive table-striped table-condensed">



                   Goods Desc
                   Balance Units
                   Exit Units





               "cbItem" runat="server" />

               <%#Eval("ItemDesc") %>
               <%#Eval("InvoicBalanceUnits") %>
               "txtExitUnits" runat="server" >
                   "revUnits" runat="server" Display="Dynamic" ControlToValidate="txtExitUnits" ValidationExpression="^\d+$" ErrorMessage="Please, insert a number." CssClass="text-danger">
                   "rfvUnits" runat="server" Display="Dynamic" ControlToValidate="txtExitUnits" ErrorMessage="Insert number of units." CssClass="text-danger">

 

the code behind:

protected void btnExit_Click(object sender, EventArgs e)
   {

       List selectedItems = rptItems.Items.Cast().Where(x => ((CheckBox)x.FindControl("cbItem")).Checked).ToList();

epeater1.DataSource = selectedItems;
       Repeater1.DataBind();

 

 Repeater1 will contain the data selected through :selectedItems this is the repeater1

 

"Repeater1" runat="server">

        class="table table-bordered table-hover table-responsive table-striped table-condensed">



                Goods Desc
                Balance Units








            <%#Eval("ItemDesc") %>
            <%#Eval("InvoicBalanceUnits") %>

 when i run the code it gives me an error that "ItemDesc" isn't exist in repeater1, whats wrong ?