C#

private void btnForm_Click(object sender, EventArgs e)
{
    Form newForm = new Form();
    newForm.TopLevel = false;
    newForm.Parent = this;
    newForm.Visible = true;
    newForm.Location = new Point(10, 10);
    newForm.Size = new Size(this.ClientSize.Width - 20, this.ClientSize.Height - this.panel1.Height - 20);
    newForm.BackColor = Color.Bisque;
    newForm.FormBorderStyle = FormBorderStyle.None;
    newForm.Dock = DockStyle.Left;
    this.Controls.Add(newForm);
}

toto_2010 wrote:

I want to read file the colluction and add it in dictionary with key and value ,C#

• Create a dictionary
  
• Load a table from a database
  
• Add items from the table to the dictionary
  

I are Troll

DesenTabel t1, t2;

private void AddUserControls()
{
  t1 = new DesenTabel();
  t2 = new DesenTabel();

  this.Controls.Add(t1);
  this.Controls.Add(t2);
}


private void Form_Paint(object sender, PaintEventArgs e)
{
  // here I draw the line
  e.Graphics.DrawLine(new Pen(new SolidBrush(Color.Black)), t1.Location, t2.Location);
}

private void t1_Move(object sender, EventArgs e)
{
  // this.Refresh() is equivalent to: 

  this.Invalidate();
  this.Update();
}

private void t2_Move(object sender, EventArgs e)
{
  // this.Refresh() is equivalent to: 

  this.Invalidate();
  this.Update();
}

private void AddUserControls()
{
  t1 = new DesenTabel();
  t2 = new DesenTabel();

  this.Controls.Add(t1);
  this.Controls.Add(t2);
}

t1.Move += new EventHandler(node_Move);
t2.Move += new EventHandler(node_Move);
...
void node_Move(object sender, EventArgs e)
{
  Invalidate();
}