Question

I have a databound control which displays a grid. The grid is bound to a linq to sql data source. I use the following code:

PaymentsDataContext data = new PaymentsDataContext();
            var q = from act in data.activations
                    where act.approved != true
                    orderby act.activationDate ascending
                    select new {activationID = act.activationID, userName = act.userName,
                    brokerName = act.broker.brokerName, existingAccount = act.existingAccount,
                    activationDate = act.activationDate, brokerUser = act.brokerUser, approved = act.approved};
            activationPending.DataSource = q;
            activationPending.DataBind();

I want to add another column to the grid. I want to show the user’s email address.
I get it like so:

var member = System.Web.Security.Membership.GetUser(username);
string email = member.Email;

How could I add this as a field in the grid, since it’s not in the Payment DB at all?

Answer 1

try this:

var q = from act in data.activations
                    where act.approved != true
                    orderby act.activationDate ascending
                    select new {activationID = act.activationID, userName = act.userName,
                    brokerName = act.broker.brokerName, 
                    existingAccount = act.existingAccount,
                    activationDate = act.activationDate, brokerUser = act.brokerUser,
                    approved = act.approved, 
                    email = System.Web.Security.Membership.GetUser(act.userName).Email };

since you already bin q and not data.activations this adds the external column to the grid.

Edit :
Because of the new added column your template of the grid view must have a place
to accept it you can add this manually like :

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="true">
<Columns>
.
.
<asp:BoundField DataField="email" HeaderText="email" 
            SortExpression="email" />
.
.
</Columns>
 </asp:GridView>

or set the property of the gridview named AutoGenerateColumns to true

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="true">
    </asp:GridView>