asp.net - Textbox.text does not show updated text in code -


when use code below reason when update clicked, hospitaltextbox.text not show current value in textbox? value selected. idea why not reading in textbox?

dim reader sqldatareader = cmd.executereader()         if (reader.read())              hospitaltextbox.text = reader(7)             firstnametextbox.text = reader(9)             session("id") = reader(0)         end if  protected sub cmdupdate_click(sender object, e eventargs) handles cmdupdate.click     dim test string     test = firstnametextbox.text     try         dim con sqlconnection         dim cmd sqlcommand         con = new sqlconnection         con.connectionstring = ""         con.open()         cmd = new sqlcommand         cmd.connection = con         cmd.commandtext = "update tbltest set [teaching hospital name] = @teachinghospitalname, [physician first name] = @firstname id = @id"         cmd.parameters.add(new sqlparameter("@id", (session("id"))))         cmd.parameters.add(new sqlparameter("@teachinghospitalname", hospitaltextbox.text)) 'does not show text changed in textbox?         cmd.parameters.add(new sqlparameter("@firstname", test))         cmd.executenonquery()         con.close()       catch ex exception      end try end sub

check page_load function.

are doing on postback set textbox value else?

if you're binding data, make sure it's done when not ispostback

if not ispostback    binddata()

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