C#

public class MainForm : Form
{
  private UserControl1 uc1; // Both instantiated/initialized elsewhere.
  private UserControl2 uc2;
  //...
 
  // Completely made-up for example
  private void Next()
  {
    Controls.Remove(uc1);
    Controls.Add(uc2);
  }
}

Regex r = new Regex("<[^>]*\\n?.*=(\"|')?(?<imog>.*\\.jpg)(\"|')?.*?\\n?[^<]*>");	
MatchCollection Matches = r.Matches(rtb.Text);

foreach (Match m in Matches)
{
	string imageName = m.Groups["imog"].Value;
	Image img = Image.FromFile(imageName);
	rtb.SelectionStart = m.Index;
   	rtb.SelectionLength = m.Length;
	Clipboard.SetDataObject(img);
    	rtb.Paste();
}

DataTable   t = new DataTable();
 
t.TableName = "test";
t.Columns.AddRange(
   new DataColumn[] {
      new DataColumn("one", typeof(string)),
      new DataColumn("two", typeof(int)),
      new DataColumn("three", typeof(DateTime)),
      new DataColumn("four", typeof(string)),
      new DataColumn("five", typeof(bool)),
      new DataColumn("six", typeof(double))
   });
 
dataGrid1.DataSource = t;