Using the IDs of dynamically created textboxes

mahulda · February 16th, 2004, 02:10 PM

Hi everybody,
My Page consists of a no. of textboxes created dynamicaly using the placeholder control.

  dim i as integer=1

  dim tb1 as textbox=new textbox()
  tb.id="tb"&i
  tb.text="One"
  pl.add(tb1) 'Here pl is the placeholder control

Here I have given the ID of the textbox as tb1 but when I try to use it, like for eg.

        response.write(tb1.text)

I get the error : tb1 not declared.
Please advise me on how to use the ID.
Using the placeholder is mandatory and cannot be changed.
I am using VBScript for my coding

stu9820 · February 16th, 2004, 02:43 PM

dim myTxtBox as textbox = myplaceHolder.FindControl("tb1")
response.write(myTxtBox)
dim myTxtBox2 as textbox = myplaceHolder.FindControl("tb2")
response.write(myTxtBox2)

Try that. You must do that for all unless you loop through the placeholder.

mahulda · February 16th, 2004, 09:07 PM

Will this work ?

dim i as integer
dim myTxtBox as textbox

for i= 1 to 5 'suppose i have 5 textboxes "tb1", "tb2"..."tb5"

myTxtBox = myplaceHolder.FindControl("tb"&i)
response.write(myTxtBox)

next

Imar · February 17th, 2004, 05:05 AM

Why don't you try it out?? ;)

Yes, that would work. FindControl expects the name of the control as a string, so combining the fixed "tb" with the number should work.

However, there are a few issues with the current code. First of all, you probably need to cast the control returned by FindControl to a real text box:

Code:

Dim i As Integer
Dim myTxtBox As TextBox 

For i = 1 To 5 'suppose i have 5 textboxes "tb1", "tb2"..."tb5"
  myTxtBox = CType(myplaceHolder.FindControl("tb" & i.ToString()), TextBox)
Next

Second, you can't Response.Write the TextBox to get its text; you'll need to explicitly use its text property:

Code:

Response.Write(myTxtBox.Text)

HtH,

Imar

---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.