C#

Form2 frm = new Form2();
frm.TopLevel = false;
frm.Dock = DockStyle.Fill;
panel1.Controls.Add(frm);

panel1.Controls.Add(new Form2() {TopLevel = false,Dock=DockStyle.Fill });

private void button2_Click(object sender, EventArgs e) {
    AboutBox1 a=new AboutBox1();
    a.Show();
    a.TopLevel=false;
    a.Dock=DockStyle.Fill;
    panel1.Controls.Add(a);
}

frm.Show();

d@nish wrote:

Finally is executed always.

using (SqlConnection myConnection = new SqlConnection(...............))
{
  ...............................
  ...............................
  ...............................
  myConnection.whatever = ?????
  try
  {
    ...............................
    ...............................
    ...............................
    using (SqlDataReader myReader = new SqlDataReader(.......))
    {
       while (myReader.Read())
       {
          ...............................
          ...............................
       }
    }
  }
  catch (....)
  {
    ...............................
  }
}

SqlConnection conn = new SqlConnection("blah");
SqlCommand cmd = new SqlCommand("blah", conn);

try
{
   SqlDataReader r = cmd.ExecuteReader();
   while (r.Read())
   {
      // more blah
   }
   r.Close();
}
catch (Exception ex)
{
// more blah
}
finally
{
   cmd.Dispose();
   conn.Close();
   conn.Dispose();
}

The using statement allows the programmer to specify when objects that use resources should release them.

A using statement can be exited either when the end of the using statement is reached or if an exception is thrown and control leaves the statement block before the end of the statement.

Jacob D Dixon wrote:

It was my understanding that the using statement after it has been compiled just automatically generated a try, catch, finally statement. The only thing is you can't really control much of what happens when the exception is catch (like write to a custom log file, or system events)

Jacob D Dixon wrote:

Personally I like to do something with any exception that is throw.. even if it is just logging it for debugging purposes.