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EditForm Double Binding

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Grid

This is a migrated thread and some comments may be shown as answers.

Adrian Eng Ying Ming asked on 22 Jul 2010, 01:28 AM

duplicated.JPG

Hi,
After using telerik RadGrid Edit form. Which within our custom user control contains a ComboBox (Data Source: DataTable, AppendItemDataBound: True). It appears that the combobox has double bind the value. I have attached a sample code which duplicated the scenario im describing.

ddl.AppendDataBoundItems = true;

ddl.Items.Add(new ListItem("select one", ""));

ddl.DataTextField = "Value";

ddl.DataValueField = "ID";

ddl.DataSource = Session["DataTableSource"];

ddl.DataBind();

RadComboTest.AppendDataBoundItems = true;

RadComboTest.Items.Add(new RadComboBoxItem("select one", ""));

RadComboTest.DataTextField = "Value";

RadComboTest.DataValueField = "ID";

RadComboTest.DataSource = Session["DataTableSource"];

RadComboTest.DataBind();

the above code is invoked one during Page Load (userControl, that is invoked by radGrid). however the behaviour of having appenddatabound is for us to Add "Select One" item is desired. Is there a reason why its duplicating ?

Best Regards,
Adrian

2 Answers, 1 is accepted

Accepted

answered on 22 Jul 2010, 03:50 PM

Hi Adrian,

It is hard to determine the exact cause of the issue withouth being able to debug the whole project. However I suggest that you modify your code as below and see if it makes any difference:

RadComboTest.AppendDataBoundItems = true;

RadComboTest.Items.Add(new RadComboBoxItem("select one", ""));

RadComboTest.DataTextField = "Value";

RadComboTest.DataValueField = "ID";

RadComboTest.DataSource = Session["DataTableSource"];

RadComboTest.DataBind();

RadComboTest.DataSource = null;

Let me know how it goes.

Sincerely yours,
Iana
the Telerik team

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