C#

public void main()
{
  // trying to run Write class method
  ((Write)a).Write();
}

class execute
{
  Write a;
  public execute(Write o)
  {
    a = o;
  }
}

<br />
<br />
public class BaseWriter<br />
{<br />
public virtual Write()<br />
{<br />
//Write What u want here<br />
}<br />
}<br />
<br />
public class FileWriter:BaseWriter<br />
{<br />
public override Write()<br />
{<br />
//Write to a file here<br />
}<br />
}<br />
<br />
public class XMLWriter:BaseWriter<br />
{<br />
public override Write()<br />
{<br />
//Write to XML file<br />
}<br />
}<br />
<br />
public class MainApp<br />
{<br />
<br />
public static void Main()<br />
{<br />
BaseWriter baseWriter1=new FileWriter(); <br />
BaseWriter baseWriter2=new XMLWriter();<br />
<br />
Writer(baseWriter1);<br />
Writer(baseWriter2);<br />
<br />
}<br />
<br />
public static void Writer(BaseWriter writer)<br />
{<br />
writer.Write();   //Writes for the correct writer<br />
}<br />
<br />
}<br />
<br />

public execute(object o)
{
 MethodInfo methodInfo = o.GetType().GetMethod("write");
 if (methodInfo != null)
  methodInfo.Invoke(o, null);
}

DateTime? dob = null;

command.Parameters.Add("@date", SqlDbType.DateTime).Value = dob;

Tomerland wrote:

s this type of gui available as some framework from microsoft or do I have to program it manually.

Luis Alonso Ramos
Intelectix
Chihuahua, Mexico