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ASP.NET - C# LinkButton Sender.Attributes Not Working

CipherIS asked
Last Modified: 2014-09-03
I am generating a list of people.  I am using the link button to allow a user to click on a person to get info on that person and continue processing on another page.

I have the below code on my .NET page
 <asp:LinkButton ID="lbPerson" runat="server" OnClick="selectPerson" 
                                EmpID='<%# DataBinder.Eval(Container, "DataItem.emp_id")%>' 
                                FirstName='<%#DataBinder.Eval(Container, "dataItem.ins_first") %>' 
                                LastName='<%#DataBinder.Eval(Container, "dataItem.ins_last") %>' >
                                <%#DataBinder.Eval(Container, "dataItem.ins_first") %>&nbsp<%#DataBinder.Eval(Container, "dataItem.ins_last") %>

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I have the below code in my code behind page

    protected void selectPerson(object sender, EventArgs e)

        LinkButton _sender = (LinkButton)sender;
        string firstName = _sender.Attributes["FirstName"].ToString();
        string lastName = _sender.Attributes["LastName"].ToString();
        int empID = Convert.ToInt32(_sender.Attributes["EmpID"].ToString());

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As I walk through the code all of the attributes are "NULL".  i have used this same code in numerous applications and I do not see why it's not working here.  Any ideas?
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