How to redraw the controls which were added dynamically

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Hello,
Here i am selecting the items from checkedListBox and saving them in ListBox by checking and after that there is a button as ">>" which stores checked items in listbox and I am generating the textboxes according to the item count of list box. all operations are carried on ">>" button's click event.

Below is code:

C#

foreach (Object items in checkedListBox1.CheckedItems)
            {
                listBox1.Items.Add(items);

            }

C#

int camCount = listBox1.Items.Count;
            arrCam = new TextBox[camCount];
            int dist = 0;
            for (int i = 0; i < camCount; i++)
            {
                TextBox tx = new TextBox();
                arrCam[i] = tx;
            }

C#

foreach (TextBox fortx1 in arrCam)
           {
               fortx1.Location = new Point(448, 13 + dist);
               groupBox8.Controls.Add(fortx1);
               dist += 25;
              
           }

here the problem is when i check all the items in checkedlistbox,items go to listbox and then generate the textboxes according to the listbox's item count.Till here it working fine,now when i uncheck any item from checkedlistbox the total no. of textboxes should also change but those textboxes are not getting redrawn only previously drawn textboxes remain in form.

Can someone help me out where I am going wrong or where is the piece of code missing?

Posted 12-Jan-15 21:58pm

Dinesh92

Updated 12-Jan-15 23:52pm

v2

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Taucher Christoph · Answer 1 · 2015-01-12T23:02:00

Add an event for the checkedListBox1 which fires when the checked items changed. On this event you can refresh the controls in you groupBox8.

For the refresh you can clear all existing Textboxes and add new onces in this event or add/remove the differenz of the privius count of the check items in the checkedListBox.

After this you can Refresh the groupbox with

C#

groupBox8.Refresh()

which redraws the Control and all child Controls.

for clearing the GroupBox i would suggest

C#

for (int i = 0; i < arrCam.Length; i++)
{
    arrCam[i].Visible = false;
    arrCam[i].Dispose();
}
groupBox8.Refresh();

I set the Visible of the TextBox to false to reduce flicker while disposing the controls.