List dropdown in editItemTemplate and footerTemplate in gridview

Question

I have a grid where I am trying to associate a drop down list with FooterTemplate and EdiItemTemplate.

<asp:TemplateField HeaderText="Role" SortExpression="Role">
                                    <HeaderStyle Width="100px"   HorizontalAlign="Center" Wrap="False"></HeaderStyle>
                                    <EditItemTemplate>
                                        <asp:DropDownList ID="ddlRole" runat="server">
                                        </asp:DropDownList>
                                    </EditItemTemplate>
                                    <FooterTemplate>
                                        <asp:DropDownList ID="ddlFRRole" runat="server">
                                        </asp:DropDownList>
                                    </FooterTemplate>
                                    <ItemTemplate>
                                        <asp:Label ID="lblRole" runat="server" Text='<%# Bind("[Role_Cd]") %>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>

I use this code and no luck. I cannot bind values ​​to a dropdown. Can someone fix me if I am wrong?

protected void UPGrid_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            DropDownList ddlRole = (DropDownList)e.Row.FindControl("ddlRole");
            DropDownList ddlFRRole = (DropDownList)e.Row.FindControl("ddlFRRole");
            ddlRole.DataSource = UPRepository.GetRoles();                
            ddlRole.DataTextField = "Role_Cd";
            ddlRole.DataValueField = "Role_Cd";
            ddlRole.DataBind();
            ddlFRRole.DataSource = UPRepository.GetRoles();                
            ddlFRRole.DataTextField = "Role_Cd";
            ddlFRRole.DataValueField = "Role_Cd";
            ddlFRRole.DataBind();

        }
    }

Answer 1

First you have to check and compare RowIndexwith the GridView EditIndexyou need to edit, and put all the code associated with the dropdown menu inside.

In addition, to search for a drop-down list in the footer, you need to use the condition:

if (e.Row.RowType == DataControlRowType.Footer)

And to search the list in the line use

if (e.Row.RowType == DataControlRowType.DataRow)

RowDataBound GridView. :

protected void MyGridView_RowDataBound( object sender, GridViewRowEventArgs e)
    {
        if(MyGridView.EditIndex == e.Row.RowIndex ) //GET THE ROW TO BE EDITED
         {
            if (e.Row.RowType == DataControlRowType.DataRow)
              {
               DropDownList ddlRole = (DropDownList)e.Row.FindControl("ddlRole");
                // Rest of Code
              }
        if (e.Row.RowType == DataControlRowType.Footer)
         {
           DropDownList ddlFRRole = (DropDownList)e.Row.FindControl("ddlFRRole");
           // Rest of code
         }
    }

- :

if ((e.Row.RowState & DataControlRowState.Edit) > 0)

:: if (e.Row.RowState == DataControlRowState.Edit)