Urgent help: detailsview control, generate data source with SQL, no data in custom update event processing?

cfanedward

The detailsview control uses SQL to generate a data source. How can I obtain the updated data in the detailsview control during custom update event processing?
    protected void GridView1_OnRowUpdating (object sender, GridViewUpdateEventArgs e)
    {
        for (int i = 0; i <e.NewValues.Count; i ++)
        {
            if (e.NewValues ​​[i]! = null)
            {
                e.NewValues ​​[i] = Server.HtmlEncode (e.NewValues ​​[i] .ToString ());
            }
        }
    }
e.newValues ​​[i] is all empty and there is no row. Why?

苹果小刀

ItemUpdating
Occurs when the Update button in the DetailsView control (the button whose CommandName property is set to "Update") is clicked, but before the update operation.

ItemUpdated
Occurs when the Update button in the DetailsView control is clicked, but after the update operation.

zz145304

To use two-way binding <% Bind ()%>, there will be values ​​in e.NewValues

zz145304

If the problem cannot be solved, please post your HTML

cfanedward

The sqldatasource I used, directly assigned values ​​to the selectcommand and updatecommand of the sqldatasource in the page_load event, realized. Thank you for your enthusiastic advice!

I recently encountered another problem: I want to determine which cells the user has selected in the table, and process other tables in the database based on the contents of the selected cells. How to realize this function?