Simple question for ASP AutoPostBack property

[benfly08]

Hi, guys.
I have a web page that contains a drop-down list, a text box and a button. I set drop-down list and text box AutoPostBack property as false. When I run this page, I selected something in the drop-down list, and type some text in text box, then hit "Submit" button. I expected the result will base on what I selected and what i type in the textbox. However, it is not!

When i traced the code, I selected "PO #" in the drop-down list and I typed "12345" in TextBox2 then I hit "Submit" button. However, the following code:

 
        If DropDownList1.SelectedItem.Text = "PO #" And TextBox2.Text <> "" Then
            op_po = 1
        Else
            op_po = 0
        End If
 

gave me op_po = 0. I found that DropDownList1.SelectedItem.Text does return "PO #" but TextBox2.Text is NOTHING. I guess the reason might be when I hit submit button, the drop-down list will post back, and then the value in TextBox2 is lost. If I set Drop-down list AutoPostBack as True, then whenever I select in the list, the whole page will load it again, which is not i want.

Anyone got an idea how to resolve this?

[jhardman]

 
        If DropDownList1.SelectedItem.Text = "PO #" And TextBox2.Text <> "" Then
            op_po = 1
        Else
            op_po = 0
        End If
 

I'm interested in seeing your form code.

Have you tried:

request.form("TextBox2") <> ""

in place of :

TextBox2.Text <> ""

in the handler?
This could work depending on how you structured your form.

[benfly08]

I'm interested in seeing your form code.

Have you tried:

request.form("TextBox2") <> ""

in place of :

TextBox2.Text <> ""

in the handler?
This could work depending on how you structured your form.

I guess I know where I went wrong.

Somewhere in my codes I had a event handler for dropdownlist1.selectedindexchanged. And I put textbox2.text = "" there. So that's why whenever I changed my selection, contents in textbox2 will be removed. But thanks for giving suggestions anyway.

Cheers