在保存按钮中放置：

 private void btnSave_Click(object sender, EventArgs e)
            {
                x = 4;
                 y = panel1 .Controls.Count * 70;
                Button newButton = new Button ();
                newButton.Height = 150;
                newButton.Width = 60;
                newButton.Location = new Point(x, y);
                newButton.Text= "your text";
                 newButton.Click += new       
              System.EventHandler(Button_Click);             
              tabControl1.TabPages [0].Controls.Add(newButton);

        }

也可以单击创建的新按钮：

And also you can handel the click of new button created :

public void Button_Click(object sender, EventArgs e)
    {
        Button button = (Button)sender ;
        MessageBox.Show("Button is pressed "+button .Text );

    }