Question

On a regular formview against an objectDataSource, we define the method for the Updating event to add values to the item that is being edited, something like this:

protected void MyFormView_ItemUpdating(object sender, FormViewUpdateEventArgs e)
{        
    RadComboBox countriesCombo =
        (RadComboBox)MyFormView.FindControl("CountryRadComboBox");
    // this should never be null, other wise, error is shown
    if (!string.IsNullOrEmpty(countriesCombo.SelectedValue))
        e.NewValues["CountryId"] = countriesCombo.SelectedValue;

In a RadGrid, I am using an edit form. Insert is working great putting this code in the PerformInsert event method:

GridEditFormInsertItem gridItem = (GridEditFormInsertItem)e.Item.OwnerTableView.GetInsertItem();

Hashtable values = new Hashtable();
gridItem.ExtractValues(values);
values["ReferenceId"] = 0;
RadComboBox comboCountries = (RadComboBox)gridItem.FindControl("CountryRadComboBox");
values["CountryID"] = comboCountries.SelectedValue;                
e.Item.OwnerTableView.InsertItem(values);

However, trying to do the same for edit is not working for me. It is the last step that I am not being able to do. Once I change the hashtable values with the value in the combo, how do I indicate that it has to use these values?

In the telerik examples they work it out with a DataTable obtained from the datasource and then mapping and doing the update in the code…. don’t wanna do that, i would love it would work the same way the insert does. For the case when i dont need to change any value in the hashtable it works perfectly, the update is working.

Any help appreciated
Vladimir

Answer 1

If I’m not mistaken, the extracted values should already be set to the selected value of the dropdown. Try using Bind to set the selected value in the markup:

<telerik:RadComboBox ID="ddlCountries" runat="server" 
    SelectedValue='<%# Bind("CountryID") %>' ...>