How do you recommend refreshing the Grid client-side?

[Nathan J Pledger]

Hi,

I have a grid:

<telerik:RadGrid ID="radGridUsers" runat="server"
                         AllowAutomaticDeletes="false"
                         AllowAutomaticInserts="false"
                         AllowAutomaticUpdates="false"
                         AllowCustomPaging="false"
                         AllowMultiRowSelection="true"
                         AllowPaging="true"
                         AllowSorting="true"
                         AutoGenerateColumns="false"
                         AutoGenerateDeleteColumn="false"
                         AutoGenerateEditColumn="false"
                         GroupingEnabled="false"
                         PageSize="20"
                         ShowFooter="false"
                         ShowGroupPanel="false"
                         ShowHeader="true"
                         ShowStatusBar="false"
                         Skin="Vista"
                         style="width:auto"
                         >
                        <ClientSettings AllowColumnHide="false" AllowColumnsReorder="false" AllowDragToGroup="false" AllowExpandCollapse="false" AllowRowHide="false" AllowRowsDragDrop="false" EnablePostBackOnRowClick="false" EnableRowHoverStyle="true" ReorderColumnsOnClient="true">
                            <ClientEvents />
                            <ClientMessages />
                            <Selecting AllowRowSelect="true" EnableDragToSelectRows="true" />
                            <Resizing AllowColumnResize="true" AllowRowResize="false" ClipCellContentOnResize="true" EnableRealTimeResize="true" ResizeGridOnColumnResize="false" />
                            <Scrolling AllowScroll="false" />
                        </ClientSettings>
                        <MasterTableView ClientDataKeyNames="Username">
                            <Columns>
                                <telerik:GridClientSelectColumn CommandName="Select" DataType="System.Boolean">
                                    <HeaderStyle Width="20" />
                                    <ItemStyle Width="20" />
                                </telerik:GridClientSelectColumn>
                                <telerik:GridTemplateColumn HeaderText="Status" UniqueName="userIcon">

                                </telerik:GridTemplateColumn>
                                <telerik:GridBoundColumn DataField="Username" AllowSorting="true" AllowFiltering="false"
                                    DataType="System.String" Display="true" HeaderText="Username" ReadOnly="true" Resizable="true" ShowSortIcon="true" UniqueName="Username"></telerik:GridBoundColumn>
                                <telerik:GridTemplateColumn UniqueName="windowsAccount" HeaderText="Windows Account">

                                </telerik:GridTemplateColumn>
                                <telerik:GridBoundColumn DataField="FirstName" AllowSorting="true" AllowFiltering="false"
                                    DataType="System.String" Display="true" HeaderText="First Name" ReadOnly="true" Resizable="true" ShowSortIcon="true" UniqueName="Username"></telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="LastName" AllowSorting="true" AllowFiltering="false"
                                    DataType="System.String" Display="true" HeaderText="Last Name" ReadOnly="true" Resizable="true" ShowSortIcon="true" UniqueName="Username"></telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="Position" AllowSorting="true" AllowFiltering="false"
                                    DataType="System.String" Display="true" HeaderText="Position" ReadOnly="true" Resizable="true" ShowSortIcon="true" UniqueName="Username"></telerik:GridBoundColumn>

                            </Columns>
                        </MasterTableView>




                    </telerik:RadGrid>

The user can display Windows which can be used to modify the settings of the items. When the RadWindows close, I have some JavaScript firing. I would like this JavaScript to refresh the grid to reflect the change, preferably in an AJAXy way.

How would you recommend doing this? I could put it in an RadAjaxPanel, but wouldn't that be expensive, bandwidth-wise?

[Shinu]

Hi Nathan,

Give a try with the following client side code on closing the RadWindow to refresh the Grid.

ASPX:

<telerik:RadWindow ID="RadWindow1" runat="server" Behavior="Close"  OnClientClose="OnClientClose"  VisibleOnPageLoad="true" ></telerik:RadWindow>

JS:

<script type="text/javascript">

function OnClientClose()
{
var oWin=GetRadWindow();

  if (oWin)
    {
       oWin.BrowserWindow.refreshGrid()
        oWin.Close();
    }
}


function GetRadWindow()
{
    var oWindow = null;
   if (window.radWindow)
    {
      oWindow = window.radWindow;
      alert(oWindow)
    }
  else if (window.frameElement.radWindow)
   {
    oWindow = window.frameElement.radWindow;
   }
  return oWindow;

 }


 function refreshGrid()
     {
       $find("<%= RadAjaxManager1.ClientID %>").ajaxRequest("Rebind");
     }
</script>

CS:

 protected void RadAjaxManager1_AjaxRequest(object sender, AjaxRequestEventArgs e)
    {
        if (e.Argument == "Rebind")
        {

            RadGrid1.Rebind();
        }
    }

You can also refer the following demo link where the Grid is being refreshed on the client side.
Window Editing

Thanks
Shinu

[Nathan J Pledger]

Thanks for that.

That works ... for one window!

My other window is not $finding the RadAjaxManager.

Both Windows call the following callback:

    <script type="text/javascript" language="javascript">

        function migOnWindowClosedHandler(sender, eventArgs) {
            var ajaxMgr=$find("ctl00_ctl00_radAjaxManager");
            if (ajaxMgr) {
                ajaxMgr.ajaxRequest("RebindUsersGrid");
            }
            else {
                window.location = window.location;
            }
        }

    </script>

Both Windows are opened using the following function (with different URLs):

function migOpenDialog(url, width, height) {
    var oManager=GetRadWindowManager();
    var oWnd=oManager.open(url)
    oWnd.setSize(width,height);
    oWnd.center();
    oWnd.set_modal(true)
    oWnd.set_behaviors(Telerik.Web.UI.WindowBehaviors.Move+Telerik.Web.UI.WindowBehaviors.Close);
}

Neither Window interacts with the RadWindowManager or the host page.

I seem to be having a few problems with $find not finding controls that are there, and this behavour seems the strangest of all. Am I misusing it?