ASP.NET panels

Could you please give me sample code b/c I'm not seeing how it's deleting from the database and how the panel gets shown.

Thanks.

Here is an example of performing various events with the GridView control (http://www.codeproject.com/KB/webforms/GridViewConfirmDelete.aspx). The last section discusses the OnRowDeleting event. The basic concept is to get the data key for the row that has been marked for deletion (using e.RowIndex) and then perform the deletion of the data row, generally using a SQLCommand object.

The displaying of the panel would be to set the Visible property of the panel to true.

Ok.  I get the gist. Thanks for the site.
Please see below, how do I get the id from querystring?

  protected void GridView1_RowCommand(object sender,
                                 GridViewCommandEventArgs e)
        {
            if (e.CommandName == "Delete")
            {
                string type;
                string trackID;
                string medID;
                string copy;

                trackID = Request.QueryString["trackId"];                 <----QueryString
                type = Request.QueryString["type"];
                medID = Request.QueryString["medID"];
                copy = Request.QueryString["copy"];

                thx.Text = trackID.ToString();

                SqlConnection conn = new SqlConnection();
                conn.ConnectionString = ConfigurationManager.ConnectionStrings["toucanMedia"].ConnectionString;
                conn.Open();

                SqlCommand cmdMed = new SqlCommand("delMediaRequest", conn);
                cmdMed.CommandType = CommandType.StoredProcedure;
                cmdMed.Parameters.Add(new SqlParameter("@medID", medID));
                cmdMed.Parameters.Add(new SqlParameter("@trackId", trackID));
                cmdMed.Parameters.Add(new SqlParameter("@copy", copy));
                cmdMed.Parameters.Add(new SqlParameter("@type", type));

                cmdMed.ExecuteNonQuery();
            }
        }

New gridview:
  <asp:GridView ID="myRequestGridView1" runat="server" 
                      onselectedindexchanged="GridView1_SelectedIndexChanged" 
                      AutoGenerateColumns="False" Width="100%" 
                      OnRowCommand="myRequestGridView1_RowCommand"
                      OnRowDataBound="myRequestGridView1_RowDataBound" 
                      OnRowDeleted="myRequestGridView1_RowDeleted" 
                      OnRowDeleting="myRequestGridView1_RowDeleting">
 
codebehind:
                                              

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Let's take a step back. If you have modified your ButtonField to have the CommandName="Delete" (in the GridView wizard, this is a CommandField of Delete) then you should use the OnRowDeleting event to perform you delete, not the OnRowCommand event. The OnRowDeleting (and OnRowDeleted) uses GridViewDeleteEventArgs that has the property RowIndex. This property tells you the index of the row where the delete button was clicked. (The OnRowCommand event is useful when you have a button that needs to trigger an event that is not Edit, Update, Delete or CancelUpdate, but otherwise is not needed. The OnSelectedIndexChanged event is also not needed unless you've added a button that has a command name of "Select". The OnRowDataBound event is also not needed unless you are performing special processing when a row from your data source is bound to your grid.)

To provide additional assistance, the GridView has the property DataKeyNames, which you can populate with the field names (comma-delimited) from your data source. From your code, this would be: trackId, type, medID, copy. <-- If you have an single column in your data table that uniquely identifies the row, such as an Identity column, then you are better off using that column.

When the GridView is bound to your data source, the GridView populates the DataKeys array with the values from your data source that match the field names you specified in the DataKeyNames property. You can then access this array in your OnRowDeleting function like this:
myRequestGridView1.DataKeys[e.RowIndex]["trackId"] <-- The last part is your field name.

Ok.  Thanks.  I looked into what you wrote and went online and did a lot of studying at different sites.
I think I'm close but for now, I've hit a ceiling.  See my code below:
The error I get is this,

Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS0123: No overload for 'myRequestGridView1_RowDeleted' matches delegate 'System.Web.UI.WebControls.GridViewDeletedEventHandler'

Source Error:
Line 33:               <tr>
Line 34:                     <td class="formFields" colspan="2">    
Line 35:                 <asp:GridView ID="myRequestGridView1" runat="server"      <--- Highlighted
Line 36:                       AutoGenerateColumns="False" Width="100%" onrowd
Line 37:                       OnRowDeleted="myRequestGridView1_RowDeleted"
 

ASP.NET
-------
  <asp:GridView ID="myRequestGridView1" runat="server" 
                      AutoGenerateColumns="False" Width="100%"
                      OnRowDeleted="myRequestGridView1_RowDeleted" 
                      DataKeyNames="trackid,type,medID,copy">
                <Columns>
                    <asp:BoundField DataField="medDte" HeaderText="Request Date" 
                        HeaderStyle-HorizontalAlign="Left" >
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                    </asp:BoundField>
                    <asp:BoundField DataField="mediaTypeName" HeaderText="Type" 
                        HeaderStyle-HorizontalAlign="Left" >
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                    </asp:BoundField>
                    <asp:BoundField DataField="medCopy" HeaderText="# of Media" 
                        HeaderStyle-HorizontalAlign="Left" >
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                    </asp:BoundField>
                    <asp:BoundField DataField="medPurpose" HeaderText="Purpose" 
                        HeaderStyle-HorizontalAlign="Left" >      
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                    </asp:BoundField>
                   <asp:ButtonField ButtonType="Image" HeaderImageUrl="~/image/delete.gif" 
                        ImageUrl="~/image/x.gif" ItemStyle-HorizontalAlign="Center" CommandName="Delete" />
                </Columns>
                </asp:GridView>
 
 
CODE BEHIND:
------------
 protected void myRequestGridView1_RowDeleted(object sender,
                                 GridViewDeleteEventArgs e)
        {
 
                string type;
                string trackID;
                string medID;
                string copy;
 
                trackID = myRequestGridView1.DataKeys[myRequestGridView1.SelectedIndex].Values["trackID"].ToString();
                type = myRequestGridView1.DataKeys[myRequestGridView1.SelectedIndex].Values["type"].ToString();
                medID = myRequestGridView1.DataKeys[myRequestGridView1.SelectedIndex].Values["medID"].ToString();
                copy = myRequestGridView1.DataKeys[myRequestGridView1.SelectedIndex].Values["copy"].ToString();
 
                SqlConnection conn = new SqlConnection();
                conn.ConnectionString = ConfigurationManager.ConnectionStrings["toucanMedia"].ConnectionString;
                conn.Open();
 
                SqlCommand cmdMed = new SqlCommand("delMediaRequest", conn);
                cmdMed.CommandType = CommandType.StoredProcedure;
                cmdMed.Parameters.Add(new SqlParameter("@medID", medID));
                cmdMed.Parameters.Add(new SqlParameter("@trackId", trackID));
                cmdMed.Parameters.Add(new SqlParameter("@copy", copy));
                cmdMed.Parameters.Add(new SqlParameter("@type", type));
 
                cmdMed.ExecuteNonQuery();
        }

                                              

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