Reference specific asp.net control using vb.net code bhind variable -


i have read through many different solutions both here on , other sites keeps eluding me.

i trying reference asp.net textbox , image button code behind vb.net.

i have tried code variable tbox says equal nothing.

dim callbtn imagebutton = ctype(sender, imagebutton) dim tbox textbox dim ibutton imagebutton dim cnumber integer = convert.toint32(callbtn.id.substring(11)) tbox = ctype(page.findcontrol("textbox" & cnumber), textbox) 'the line below commented out because did not work either first 1 tried 'tbox = directcast(page.findcontrol("textbox" & cnumber), textbox) tbox.text = "" <--- on line tbox nothing tbox.visible = false

i have placed break point on tbox.text line , tbox equals nothing.

how can reference text box variable? need reference , image button need 1 work first.

if there question on here answers please point me not find one.

edit: update here code creates textbox , image button.

<asp:imagebutton id="imagebutton1" runat="server" visible="false" onclick="removefile" imageurl="~/images/red-x-md20x20.png" imagealign="top" tooltip="click remove file" />&ensp; <asp:textbox id="textbox1" runat="server" visible="false" width="300px" />

it turns out not looking right name. being on content page had reference master page first.

i used following:

dim ctrlnamet string = "ctl00$contentplaceholderright$textbox" & cnumber

this did trick!


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