Client Side Grid Access problem

[david]

I use client side grid variable access quite a bit but have one program that I cant seem to find the problem with and was hoping someone would indulge me on a quick review.  On the 'getCellByColumnUniqueName' function I get the JS error:

error:'undefined' is null or not an object.

in the codebehind: 

GridDataItem gridDataItem = e.Item as GridDataItem;
HyperLink GradeBook = e.Item.FindControl("GradeBook") as HyperLink;
GradeBook.Attributes["href"] = "#";
GradeBook.Attributes["onclick"] = string.Format("return ShowGradeBook('{0}');", e.Item.ItemIndex);

which works fine, my JS Function runs:

function ShowGradeBook(rowIndex)

{

var mtv = $find("<%= RadGrid1.ClientID %>").get_masterTableView();

mtv.selectItem(mtv.get_dataItems()[rowIndex].get_element());

var selectedRows = mtv.get_selectedItems();

var row = selectedRows[0];

 alert(

"InGradeBOok=" + rowIndex);

 tf = mtv.getCellByColumnUniqueName(row,

"CourseID")

var CourseID = tf.innerHTML;

CourseID is defined in the grid as:

<telerik:GridBoundColumn DataField="CourseID" UniqueName="CourseID" Display="false" ></telerik:GridBoundColumn>

[Shinu]

Hi David,

Try accessing the cell value for the desired column on the client side as shown below.

JS:

function ShowGradeBook(rowIndex)
       {
        var mtv = $find("<%= RadGrid1.ClientID %>").get_masterTableView();
         mtv.selectItem(mtv.get_dataItems()[rowIndex].get_element());
         var selectedRows = mtv.get_selectedItems();
         alert("InGradeBOok=" + rowIndex)

         var row = mtv.get_dataItems()[rowIndex];
         var cell = mtv.getCellByColumnUniqueName(row, "CourseID");
         alert( cell.innerHTML)
       }

Regards
Shinu.

[david]

That worked thank you.

Curious though, this aspx has three grids, two of them work using this code:

var mtv = $find("<%= RadGrid2.ClientID %>").get_masterTableView();

mtv.selectItem(mtv.get_dataItems()[rowIndex].get_element());

var selectedRows = mtv.get_selectedItems();

var row = selectedRows[0];

BUT the 3rd one does not and had to use the suggested approach:

var mtv = $find("<%= RadGrid3.ClientID %>").get_masterTableView();

mtv.selectItem(mtv.get_dataItems()[rowIndex].get_element());

var selectedRows = mtv.get_selectedItems();

var row = mtv.get_dataItems()[rowIndex];

I'm obviously not understanding something about the Grid / or API, can anyone explain the reason for the difference?

thanks