la paginación de vista de cuadrícula no funciona

Question

Tengo un control gridview, sin embargo, cuando hago clic en el número de página, aparece el mensaje "Página no encontrada". ¿Que me estoy perdiendo aqui?

Mi código es:

<asp:GridView ID="gvEmployeeResults" Width="900px" CellSpacing="1" 
    CellPadding="2" 
    AutoGenerateColumns="false" OnRowDataBound="gvEmployeeResults_OnRowDataBound" 
    runat="server" AllowPaging="true" > 
    <Columns> 
     <asp:TemplateField HeaderText="Last Name, First Name" ItemStyle-Wrap="true" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="left"> 
      <ItemTemplate> 
        <asp:LinkButton id="lbtnEmployeeName" OnCommand="EditEmployee_Command" CommandArgument='<%#Eval("EmployeeNum")%>' CommandName="EmployeeName" Visible="true" runat="server" ToolTip="Click to edit Employee."><%# DataBinder.Eval(Container.DataItem, "empLastName") + ", " + DataBinder.Eval(Container.DataItem, "empFirstName")%></asp:LinkButton> 
      </ItemTemplate> 
     </asp:TemplateField> 
     <asp:BoundField DataField="empAddrLine1" ControlStyle-Width="225px" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="left" HeaderText="Address" /> 
     <asp:BoundField DataField="empCity" ControlStyle-Width="120px" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="left" HeaderText="City" /> 
     <asp:BoundField DataField="empState" ControlStyle-Width="50px" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="left" HeaderText="State" /> 
     <asp:BoundField DataField="empPostalCode" ControlStyle-Width="100px" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="left" HeaderText="Zip" /> 
     <asp:BoundField DataField="empDOB" ControlStyle-Width="100px" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="left" HeaderText="Date Of Birth" /> 
    </Columns> 
</asp:GridView> 


     protected void BindGridview() 
     { 
      corpEmployee.Employee emp = new corpEmployee.Employee(); 

      emp.empLastName = tboxLastName.Text.Trim(); 
      emp.empFirstName = tboxFirstName.Text.Trim(); 
      emp.empDOB = tboxDateOfBirth.Text.Trim(); 

      gvEmployeeResults.DataSource = corpEmployeeMgr.GetEmployees(emp); 
      gvEmployeeResults.DataBind(); 
     } 

     protected void gvEmployeeResults_OnRowDataBound(object sender, GridViewRowEventArgs e) 
     { 
      if (e.Row.RowType == DataControlRowType.DataRow) 
      { 
       if (e.Row.Cells[0].Text.Contains("nbsp;")) 
       { 
        e.Row.Cells[0].Text = e.Row.Cells[0].Text.Replace("&lt;", "<").Replace("&gt;", ">").Replace("&amp;", "&"); 
       } 
      } 
      else 
      { 
       return; 
      } 
     } 

     protected void gvEmployeeResults_PageIndexChanging(object sender, GridViewPageEventArgs e) 
     { 
      gvEmployeeResults.PageIndex = e.NewPageIndex; 
      gvEmployeeResults.DataBind(); 
     } 

Answer 1

debes usar EnableViewstate = true y vincular una vez y usar IsPostback. (PageIndex)

1. EnableViewState=true for your control 

2. In the page load 

If(! IspostBack) 
{ 
    Bind().... 
} 

And set PageIndex 

Answer 2

Tienes que llamar BindGridview() en PageIndexChanging controlador de eventos.

protected void gvEmployeeResults_PageIndexChanging(object sender, GridViewPageEventArgs e) 
{ 
    gvEmployeeResults.PageIndex = e.NewPageIndex; 
    BindGridview(); 
}