[Solved] Access edit form textbox of hierarchical grid on client

[Laura]

I have a 3 level hierarchical grid where I use editforms as my edit mode. In the edit form, I have a gridtemplatecolumn which has a lookup icon and when I click on it, I open a radwindow so the user can choose a name from a list of about 5000 names. I open this window from a client handler for the icon. On close of the window, the name and id is returned, and I need to set one of the grid item template textboxes with this name. The gridtemplate column is:

<telerik:GridTemplateColumn UniqueName="feedName" HeaderText="Feed name" DataField="feed_name">
                                     <ItemTemplate>
                                      <asp:Label ID="feed_nameLabel"   runat="server"  Text='<%#Eval("feed_name") %>'></asp:Label>
                                     </ItemTemplate>
                                     <EditItemTemplate>
                                         <telerik:RadTextBox ID="feed_name" runat="server" Enabled="false" Width="175px"
                                                    ToolTip="Click on lookup icon to choose from sources" Text = '<%# Eval("feed_name") %>'>
                                                </telerik:RadTextBox>


                                                <asp:ImageButton ID="sourceLookUpButton" runat="server"
                                                    AlternateText="Click to choose feed name" ImageUrl="~/Images/Lookup1.gif"
                                                    OnClientClick="openSourceWindow(); return false;"
                                                    ToolTip="Click to choose source"  />
                                                <asp:RequiredFieldValidator ID="RequiredFieldValidator9" runat="server"
                                                    ControlToValidate="feed_name" Display="Dynamic" ErrorMessage="* required"
                                                    ForeColor="#003DEB" SetFocusOnError="true"
                                                    ValidationGroup="FeedValidationGroup"></asp:RequiredFieldValidator>


                                     </EditItemTemplate>
                                    </telerik:GridTemplateColumn>

I found an example here that creates a script onitemcreate, and calls that script on the close of the window. It is giving me an error when calling the scipt. The code I use in the itemCreated handler is:

if (e.Item is GridEditableItem && e.Item.IsInEditMode && e.Item.OwnerTableView.Name == "FeedTableView")
        {
            if (e.Item.OwnerTableView.IsItemInserted) // item is about to be inserted
            {
                GridEditableItem editableItem = (GridEditableItem)e.Item;
                RadTextBox feedName = (RadTextBox)editableItem["feedName"].FindControl("feed_name");
                string script = String.Format("GetFeedNameID = '{0}';\n",  editableItem["feedName"].FindControl("feed_name").ClientID);
                ClientScript.RegisterClientScriptBlock(Page.GetType(), "mykey", script, true);
                RadAjaxPanel1.ResponseScripts.Add(script);
            }
        }

When it runs, I debug this line:
 string script = String.Format("GetFeedNameID = '{0}';\n",  editableItem["feedName"].FindControl("feed_name").ClientID);
which gets the clientID of a gridtemplatecolumn

it and see that the script gets set with the value:
 "GetFeedNameID = 'providersGrid_ctl00_ctl09_Detail20_ctl09_Detail20_ctl02_ctl04_feed_name';\n"


In the client in the radwindow onclientclose handler, I call:

function OnClientSourceClose(oWnd) {

             var txtbxSourceName;
             var txtbxSourceID;
             if (oWnd.argument.returnCode == 0)  // if returnCode is 0, user cancelled - don't change anything
                 return;

             if (oWnd.argument.returnCode == -1) // user pressed clear - clear out values
             {
                 txtbxSourceName = $find("source_name");
                 txtbxSourceName.set_value("");
                 txtbxSourceID = $find("source_id");
                 txtbxSourceID.set_value("-1");
                 return;
             }
             //get the transferred arguments
             var source_name = oWnd.argument.sourceName;
             var sourceId = oWnd.argument.sourceID;

             $get(GetFeedNameID).innerHTML = source_name;
         }

The last statement $get(GetFeedNameID).innerHTML = source_name; is calling the script
and it It throws the error: htmlfile: Unknown runtime error

What am I doing wrong?

[Laura]

Ok, I figured out how to fix it. I changed my RadTextBox in the template column to a asp textbox, and instead of setting it using innerhtml, I set it's value, so I changed the line to

$get(GetFeedNameID).value= source_name;

and now it works.