如何在使用tabControl.TabPages [0] .Controls.Add（）时停止表单闪烁？

Question

am using below code to add a Form to a tabControls tabPage

private void btnStudents_Click(object sender, EventArgs e)
    {
       foreach (Form c in tabStudents.TabPages[0].Controls)
        {
            tabStudents.TabPages[0].Controls.Remove(c);
            c.Dispose();
        }

        //load form
        StudentsMasterForm f = new StudentsMasterForm
        {
            TopLevel = false,
            FormBorderStyle = FormBorderStyle.None,
            Dock = DockStyle.Fill
        };

        tabStudents.TabPages[0].Controls.Add(f);
        f.Show();
    }

the problem however is, there is too much form flickering when the button is clicked (ie when the form is loaded). I have tried using tabCustomersAndOrders.TabPages[0].SuspendLayout(); and tabCustomersAndOrders.TabPages[0].ResumeLayout(); ` but the flickering isn't going away.

I want to transition from one form to another to be as smooth as possible.

Answer 1

Enabling double-buffering on the TabControl might help. With double-buffering, the control graphics all get rendered into memory, and then displayed only when all control rendering is complete.

This will mean a visible delay until completion, but should remove the flickering effect of multiple controls rendering.

The following will enable double-buffering:

myTabControl.SetStyle(ControlStyles.DoubleBuffer | 
      ControlStyles.UserPaint | 
      ControlStyles.AllPaintingInWmPaint,
      true);

The other alternative (the one I'd recommend) is to look at the problem from a different angle. Is there any way you can alter the UI design so that this kind of form population is pre-cached, or occurs before rendering to screen?

Answer 2

For the purpuse of marking this question as answered, here i post a link to another stackoverflow question that has a solution to my question.

Here is the link how to fix the flickering in user controls

Answer 3

Just paste this in your main GUI:

protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                cp.ExStyle |= 0x02000000;  // Turn on WS_EX_COMPOSITED
                return cp;
            }
        }

this should solve your problem. At least from many things that I searched over the web, this one helped.