C#

//For running the sample code paste the following in button click event
private void button1_Click(object sender, System.EventArgs e)
{
	string strImageToRTF ="";// string to hold rtf code

	//create the file where rtf code has to be written
	string strfileName = "ImageInRTFfile.rtf";
	FileStream MyStream = new FileStream("c:\\" + strfileName, FileMode.Create);
	System.IO.StreamWriter MyWriter =new System.IO.StreamWriter(MyStream,System.Text.Encoding.Default);
	//

	//Prepare image object from image file 
	Image img = new Bitmap(@"c:\myimage.bmp");
        //

	//get the RTF string from the method  ImageToRTF   
	strImageToRTF = this.ImageToRTF(img);
        //

	//write the generated RTF string into the file
	MyWriter.Write(strImageToRTF);
        //

	//close Stream Writer and File Stream
	MyWriter.Close();
	MyStream.Close();
	//
}
//

//
// Method to get the rtf code string from the image object
private  string ImageToRTF(Image img)
{
	RichTextBox rtf = new RichTextBox();
	Clipboard.SetDataObject(img);
	rtf.Paste();
	return rtf.Rtf;
}
//
//

listBox1.DataSource = ds; // your DataSet instance
listBox1.DataMember = "MyTable"; // your table name
listBox1.DisplayMember = "Name"; // column name for display data
listBox1.ValueMember = "ID"; // column name for value data

private void removebutton_Click(object sender, System.EventArgs e)
		{
			oleDbDataAdapter1.Fill(dataset);
			try
			{
				
			string strSQL = "DELETE  FROM Movie WHERE Title = '" + comboBox1.Text.ToString() + "'";
			oleDbDeleteCommand1.CommandText = strSQL;
			oleDbDataAdapter1.DeleteCommand = oleDbDeleteCommand1;
 
			oleDbDeleteCommand1.Connection = oleDbConnection1;
			oleDbDeleteCommand1.Connection.Open();
			oleDbDeleteCommand1.ExecuteNonQuery();
			oleDbDeleteCommand1.Connection.Close();
			MessageBox.Show(comboBox1.Text.ToString() + " has been removed");
			oleDbDataAdapter1.Update(dataset);
			
			
			}
			catch (Exception ex)
			{
				MessageBox.Show("Not found");
				MessageBox.Show(ex.ToString());
			}
			
			
			
			
			
		} 

OleDbDataAdapter1.Update(dataset); // I assume this updates the Dataset<br />

private void removebutton_Click(object sender, System.EventArgs e)
		{
			
			
			try
			{
				
			string strSQL = "DELETE  FROM Movie WHERE Title = '" + comboBox1.Text.ToString() + "'";
			oleDbDeleteCommand1.CommandText = strSQL;
			oleDbDataAdapter1.DeleteCommand = oleDbDeleteCommand1;
 
			oleDbDeleteCommand1.Connection = oleDbConnection1;
			oleDbDeleteCommand1.Connection.Open();
			oleDbDeleteCommand1.ExecuteNonQuery();
			
			MessageBox.Show(comboBox1.Text.ToString() + " has been removed");
			oleDbDataAdapter1.Update(dataset);			oleDbDeleteCommand1.Connection.Close();
			
			
			}
			catch (Exception ex)
			{
				MessageBox.Show("Not found");
				MessageBox.Show(ex.ToString());
				oleDbDeleteCommand1.Connection.Close();
			}
			
			
			oleDbDataAdapter1.Fill(dataset);
			
			comboBox1.DataSource = dataset;		
}

public class MyForm : Form
{
  private Add addControl;
  private Delete deleteControl;
  public MyForm()
  {
    addControl = new Add();
    deleteControl = new Delete();
    // If you want, add them to the Controls collection now.
  }
  private void addMenu_Click(object sender, EventArgs e)
  {
    Controls.Remove(deleteControl);
    Controls.Add(addControl);
    // Or use deleteControl.Hide() and addControl.Show()
  }
  private void deleteMenu_Click(object sender, EventArgs e)
  {
    Controls.Remove(addControl);
    Controls.Add(deleteControl);
    // Or use addControl.Hide() and deleteControl.Show()
  }
}

private void CloseAllChildren()
{
  System.Windows.Forms.Form[] myChildren = this.MdiChildren;
  foreach (Form child in myChildren)
  {
      child.Close();
  }
  return;
}

public void Form1_Closing(object sender, System.EventArgs e)
{
    ... release resources ...
    ... if user did not save see if they really want to throw
        awway their work
    // user wants to save data...do not close this form
    e.CloseCancel = true;
}