ASP.net Gridview Row Deletion - asp.net

Question

I am using Visual Studio 2015 and Entity Framework 6. I have a gridview displaying orders from a database. However, I need a user to be able to click a row and be taken to another page for editing that row after a dialog box confirmation.
This is what I have:
<asp:GridView ID="gridOrders" runat="server" Height="184px" Width="1359px" AutoGenerateColumns="false"
AllowSorting="true" >
<HeaderStyle Font-Bold="true" Font-Size="16pt" BackColor="#cc0000" ForeColor="Black" />
<RowStyle Font-Size="12pt" BackColor="#afadad" ForeColor="White"/>
<AlternatingRowStyle BackColor="#afadad" ForeColor="White" />
<Columns>
<asp:CommandField HeaderText="" SelectText="CANCEL ORDER" ShowSelectButton="true" ControlStyle-ForeColor="White" />
<asp:BoundField HeaderText="First Name" DataField="FirstName" SortExpression="FirstName" />
How do I make the row selection to another page happen with a dialog that asks user if they are sure?

Answer 1

Change your aspx page with the below code
<asp:GridView ID="gridOrders" runat="server" Height="184px" Width="1359px" AutoGenerateColumns="False"
AllowSorting="True">
<HeaderStyle Font-Bold="true" Font-Size="16pt" BackColor="#cc0000" ForeColor="Black" />
<RowStyle Font-Size="12pt" BackColor="#afadad" ForeColor="White" />
<AlternatingRowStyle BackColor="#afadad" ForeColor="White" />
<Columns>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="lnkCancelOrder" runat="server" OnClientClick="return confirm('Are you sure to redirect?')" OnClick="lnkCancelOrder_Click" CausesValidation="False" CommandArgument='<%#Eval("OrderID") %>' CommandName="Select" Text="CANCEL ORDER"></asp:LinkButton>
</ItemTemplate>
<ControlStyle ForeColor="White" />
</asp:TemplateField>
<asp:BoundField HeaderText="First Name" DataField="FirstName" SortExpression="FirstName" />
</Columns>
</asp:GridView>
Write the c# code as follows
You can redirect to another page and pass the orderID as QueryString, and retrieve the complete order information by orderID and show that in an edit mode form
protected void lnkCancelOrder_Click(object sender, EventArgs e)
{
LinkButton lnk = sender as LinkButton;
string orderID = lnk.CommandArgument;
Response.Redirect("AnotherPage.aspx?orderId="+orderID);
}

Answer 2

Write under the <asp:TemplateField> of Gridview as
<asp:LinkButton ID="anchrTag" runat="server" PostBackUrl="Your edit page url" OnClientClick="return confirm('Are u sure to leave this page and want to go for edit?');">Edit</asp:LinkButton>