Question

I am having this button in a gridview_MessageTable

 <asp:ImageButton ID="imgbtn_ViewDashBoard" ImageUrl="Styles/Images/dash.png" Enabled="True"
                                    Width="50" runat="server" PostBackUrl='<%# Eval("MsgID", "ResponseMetric.aspx?MsgID={0}") %>'
                                    Text='Send'></asp:ImageButton>

On click it postback with the selected value.

How can I store that value in a session or a hidden field in server side.

Answer 1

PostBackUrl='<%# String.format("ResponseMetric.aspx?MsgID={0}", Eval("MsgID")) %>'

You should be able to retrieve the value in ResponseMetric.aspx in the following way:

string msgID = Request.QueryString["MsgID"];