Dynamically create textbox

Question

I need to dynamically create textbox. This is my code, but with this I create only one textbox:

 Public Sub CreateTextBox()
        Dim I As Integer
        Dim niz As Array
        For I = 1 To 5
           Dim myTextBox = New TextBox
           myTextBox.Text = "Control Number:" & I
            Me.Controls.Add(myTextBox)
        Next

    End Sub

So how i can dynamically create textbox?

Thanks!

What is niz used for? A declaration As Array is almost certainly an error in VB. — Konrad Rudolph
– Konrad Rudolph, Commented Mar 20, 2010 at 16:33
@Chris: make your comment an answer, you deserve the reputation, and the question can be marked as complete/answered. — Konrad Rudolph
– Konrad Rudolph, Commented Mar 20, 2010 at 16:39
Chris has it exactly right. You need to set top/left properties for the textboxes or else they'll be rendered on top of each other. — Anthony Pegram
– Anthony Pegram, Commented Mar 20, 2010 at 16:41

JaredPar · Accepted Answer · 2010-03-20 17:22:53Z

2

This code is actually creating 5 instances of TextBox and adding them to the current form. The problem is that you are adding them one on top of another. You need to use a layout mechanism to display them correctly.

For example this code will add them to a FlowLayoutPanel in a top down fashion.

Public Sub CreateTextBox()
  Dim I As Integer
  Dim panel as New FlowLayoutPanel()
  panel.FlowDirection = FlowDirection.TopDown
  For I = 1 To 5
    Dim myTextBox = New TextBox
    myTextBox.Text = "Control Number:" & I
    panel.Controls.Add(myTextBox)
  Next
  Me.Controls.Add(panel)

End Sub

answered Mar 20, 2010 at 17:22

JaredPar

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Comments

Bill · Accepted Answer · 2010-03-20 16:48:49Z

2

Chris is right. You didn't set the location so the control uses the default location for each one. They are stacked on top of each other.

You might also want to create a separate collection of the textboxes added so that you can access them separately from the Forms.Controls collection.

Also you may want to use the .Tag property to identify the created control in some way.

answered Mar 20, 2010 at 16:48

Bill

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Comments

Robert · Accepted Answer · 2010-03-20 16:38:38Z

0

You need to set the ID property of the control to be unique for each control. Also remember that with dynamically created controls, you must recreate them with each page post in order to be able to retrieve any information from the controls collection.

answered Mar 20, 2010 at 16:38

Robert

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1 Comment

Konrad Rudolph Over a year ago

I think the OP is talking about WinForms, not WebForms.

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