c# - How to change button text on page load based on listview value on Visual Studio -

i want change button text on page load after retrieving list view values.

for example,

<asp:label id="favouritelabel" runat="server" text='<%# eval("favourite") %>' /> 

if label value 1, button change favourited.

i have retrieved list view values binding listview

protected void listview1_itemdatabound(object sender, listviewitemeventargs e)     {         if (e.item.itemtype == listviewitemtype.dataitem)         {             label activity = (label)e.item.findcontrol("favouritelabel");             activityid =  activity.text;                        }     } 

then, activityid , simple if-else check on page load

protected void page_load(object sender, eventargs e)     {                  if (activityid == "1")         {             button4.text = "favourited";         }         else         {             button4.text = "favourite";         }      } 

however not work. anybody?

do inside postback check in load event, instance:

protected void page_load(object sender, eventargs e)         {             if (!ispostback)             {                 if (activityid == "1")                 {                     button4.text = "favourited";                 }                 else                 {                     button4.text = "favourite";                 }             }         } 

read more postback here