Access MasterTableView Data

[Jack]

I am new to the Rad controls.  I am using VS2008 and .Net Framework 3.5 with Rad Controls 2008.3.1125.35.  I have a RadGrid with a MasterTableView and a GridDetailView.  In the code behind, I have the following:

 

protected void G_DetailTableDataBind(object source, Telerik.Web.UI.GridDetailTableDataBindEventArgs e)

 

{

 

    GridDataItem parentItem = e.DetailTableView.ParentItem as GridDataItem;

 

    ParentID =

Convert.ToInt32(parentItem.Cells["PEIRS_IncidentID].Text);

 

 

    switch (e.DetailTableView.DataMember)

 

    {

 

        case "IncidentSupps":

 

 

        // get the data and set the datasource

 

        e.DetailTableView.DataSource = BLL.

Supplement.GetSupplements(ParentID);

 

 

        break;

 

 

        case "IncidentSubjects":

 

 

        // get the data and set the datasource

 

        e.DetailTableView.DataSource = BLL.

Supplement.GetSubjects(ParentID);

 

 

        break;

 

    }

}

I am trying to pull the value of the PEIRS_IncidentID column from the MasterTableView so I can retrieve only those records with a matching PEIRS_IncidentID in the table bound to the GridDetailView.

When I debug and set a breakpoint at the ParentID = ... statment, parentItem.Cells["PEIRS_IncidentID].Text is always an empty string.  When I enter ? parentItem.DataItem in the command window, it shows me all of the bound columns and values in those columns, and none are empty.

Why can I see the data in the command window, but cannot seem to access it in the parentItem variable in the code?


Thanks,
Jack

[Daniel]

Hello Jack,

You can try the following approach:

GridDataItem item = e.DetailTableView.ParentItem;
Hashtable values = new Hashtable();
item.ExtractValues(values);
string myValue = values["value"].ToString();

or:

GridDataItem item = e.DetailTableView.ParentItem;
string myID = DataBinder.Eval(item.DataItem, "myID");

Regards,
Daniel
the Telerik team

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[Jack]

Daniel, thanks for your quick response.  I was not able to use the first approach as I couldn't get "Hashtable" to resolve.  The scond approach worked after a minor modification:

GridDataItem item = e.DetailTableView.ParentItem;
string IncidentID = DataBinder.Eval(item.DataItem, "PEIRS_IncidentID").ToString();

Once I put .ToString() it gave me exactly what I needed.


Jack

[Daniel]

Hello Jack,

I'm glad that you managed to achieve the desired result.

The same approach is used in one of our online demos:
Programmatic Binding

Best regards,
Daniel
the Telerik team

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