Getting DropDownList values in a repeater

Question

There is a following mark-up code:

ASPX Page

<asp:Repeater ID="GeneralRepeater" runat="server" 
 OnItemDataBound="GeneralRepeater_OnItemDataBound">
   <ItemTemplate>
     <tr>
      <td>
       Place:
         <asp:DropDownList ID="GeneralDDL" DataTextField="Text" 
              DataValueField="Arena" runat="server" />
     </td>
     <th>
       <asp:Button ID="GeneralButton" runat="server" 
            Text="Принять запрос" onclick="GeneralButton_Click" />
    </th>
    </tr>
   </ItemTemplate>
</asp:Repeater>

Code-behind

protected void GeneralRepeater_OnItemDataBound(object sender, 
                                               RepeaterItemEventArgs e)
{
     if (e.Item.ItemType == ListItemType.Item || 
         e.Item.ItemType == ListItemType.AlternatingItem)
     {
         DropDownList myDDL = (DropDownList)e.Item.FindControl("GeneralDDL");
         myDDL.DataSource = lstArenaSelect;
         myDDL.DataBind();

         MyObject obj= (MyObject)e.Item.DataItem;
         Button GeneralButton = (Button)e.Item.FindControl("GeneralButton");
         AcceptGeneralRequestButton.CommandArgument = obj.Id;
     }
}

This shows the initialization of each DropDownList with a list of objects, and each button in the row linking to the row object.

In the GeneralButton_Click method I can get ID of the object bound to the repeater.

Question

How do I get value from the DropDownList that is located in the same repeater row?

Answer 1

Maybe something like this would work:

protected void GeneralButton_Click(object sender, EventArgs e)
{
    Button myGeneralButton = (Button)sender;
    DropDownList myDDL = (DropDownList) myGeneralButton.NamingContainer.FindControl("GeneralDDL");

    // myDDL.SelectValue should be what you are looking for.
}

Answer 2

I did something with grids and datagrid has a row databound event http://stackoverflow.com/questions/1848631/how-do-i-data-bind-a-drop-down-list-in-a-gridview-from-a-database-table-using-vb/1853267#1853267

if you are using ItemDataBound event on the repeater you can also get the index using e.Item.ItemIndex

I do not think repeater has a row databound event though.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.repeater%5Fevents.aspx

Answer 3

Use the 'Items' member and the supplied item index.

See... http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.repeater.items.aspx for examples.

Basically...

DropDownList currDDL = GeneralRepeater.Items[currButtonItemIndex].FindControl('GeneralDDL') as DropDownList;

or

DropDownList currDDL = GeneralRepeater.Items[e.Item.ItemIndex].FindControl('GeneralDDL') as DropDownList;

In the case of an event handler.

PS. If you can, use a ListView instead of a repeater.

Answer 4

I think what you want is to get the repeater row from the RepeaterCommandEventArgs:

protected void MyRepeater_ItemCommand(object source, RepeaterCommandEventArgs e)
{
    DropDownList myDDL;

    myDDL = (DropDownList) e.Item.FindControl("GeneralDDL");

    System.Diagnostics.Debug.WriteLine(myDDL.SelectedValue);
}

Answer 5

Thanks for all, I've used another approach:

Control parent = ((Control)sender).Parent;
DropDownList GeneralDDL = (DropDownList)parent.FindControl("GeneralDDL");

Code is called in the OnClick button event handler.