Detailsview onupdating

I have a Details View with a Drop Down List in an Edit Item Template, I know, pretty cool right?But when I try to Update the table with a new value from the Drop Down List the table does not get updated with the new value. Each field is then displayed in a row as text, in the order in which each field appears in the data source. Design, Version=, Culture=neutral, Public Key Token=b03f5f7f11d50a3a", "System. Valid bindable types are String, Date Time, Decimal, Guid, and the set of primitive types.A Details View Update Event Args object is passed to the event handler, which allows you to determine the index of the record being updated and to indicate that the update operation should be canceled.To cancel the update operation, set the collections, if necessary, before the values are passed to the data source.Note: The Details View control can provide support for update, delete, insert, and paging operations with other types of data sources; however, you must provide the implementation for these operations in an appropriate event handler. Clicking the Update button updates the record in the data source, while clicking the Cancel button abandons any changes. You can customize the appearance of the Details View control by setting the style properties for different parts of the control.

Toolbox Data("The Details View control is used to display a single record from a data source in a table, where each field of the record is displayed in a row of the table. Validation server controls are also provided to assess user input. Auto Generate Insert Button properties to true, respectively. For more information, see Script Exploits Overview. However, to make use of the Details View control's advanced capabilities you must explicitly declare the row fields to include in the Details View control. The row fields specified are added to the Details View. Note: Explicitly declared row fields can be displayed in combination with automatically generated row fields. Automatically generating the rows provides a quick and easy way to display every field in the record. Fields collection allows you to programmatically manage the row fields in the Details View control.

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