c# - How to hide column and access it programatically in Gridview? -

i have gridview bonded totally programatically . want hide columns , rich them show them in label.

here gridview :

<gridview id=gridview1 runat="server" ></gridview> 

i want hide empid , unitid . , want show them in label on front-end side

empid  empname unitid  unitname     --------------------------------  1      jack     4      myunit 

i trying use code , not working gives me error

 if (gridforunits.columns.count > 1)         {            gridforunits.columns[1].visible = false;            //gridforunits.columns[1].visible = false;         } 

any appreciate

thanks

if want hide column base on logic, want use rowdatabound.

it bit easy maintain in future.

here sample. can hide or show whatever columns like.

<asp:gridview id="gridview1" runat="server" onrowdatabound="gridview1_rowdatabound"      autogeneratecolumns="false">     <columns>         <asp:boundfield headertext="empid" datafield="empid" />         <asp:templatefield headertext="empname" >             <itemtemplate>                 <asp:label runat="server" id="empnamelabel"                      text='<%# eval("empname") %>' />             </itemtemplate>         </asp:templatefield>         <asp:boundfield headertext="unitid" datafield="unitid" />         <asp:templatefield headertext="unitname" >             <itemtemplate>                 <asp:label runat="server" id="unitnamelabel"                      text='<%# eval("unitname") %>' />             </itemtemplate>         </asp:templatefield>     </columns> </asp:gridview>   public class employee {     public int empid { get; set; }       public string empname  { get; set; }       public int unitid  { get; set; }     public string unitname { get; set; }   }  protected void page_load(object sender, eventargs e) {     gridview1.datasource = new list<employee>     {     new employee { empid = 1, empname = "one", unitid = 100, unitname = "one hundred"},     new employee { empid = 2, empname = "two", unitid = 200, unitname = "two hundred"},     new employee { empid = 3, empname = "three", unitid = 300, unitname = "three hundred"},     new employee { empid = 4, empname = "four", unitid = 400, unitname = "four hundred"}     };     gridview1.databind(); }   protected void gridview1_rowdatabound(object sender, gridviewroweventargs e) {     if (e.row.rowtype == datacontrolrowtype.datarow)     {         var employee = e.row.dataitem employee;         var empnamelabel = e.row.findcontrol("empnamelabel") label;         var unitnamelabel = e.row.findcontrol("unitnamelabel") label;          if (employee.unitid == 200)         {             empnamelabel.visible = false;             unitnamelabel.visible = false;         }     } }