C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Linq.Expressions;
using System.Reflection;

namespace ConsoleApplication4
{
class Program
	{
	static void Main(string[] args)
		{
		Consumer c = new Consumer();
		c.TestIt();
		}
	}

public class Demo
	{
	public int InstanceProperty { get; set; }
	public string InstanceField;
	static public int TypeField;
	static public int TypeProperty { get; set; }
	}

public class Consumer
	{
	public void TestIt()
		{
		button1_click(this, new EventArgs());
		}


	private void button1_click(object sender, EventArgs e)
		{
		Demo myDemo = new Demo { InstanceProperty = 10, InstanceField = "Kab" };
		string n1 = GetMemberName(() => myDemo.InstanceField);
		string n2 = GetMemberName(() => myDemo.InstanceProperty);
		string n3 = GetMemberName(() => Demo.TypeField);
		string n4 = GetMemberName(() => Demo.TypeProperty);
		string n5 = GetMemberName(() => myDemo);	// This was a surprise - I expected it to fail!
		}

	private string GetMemberName<T>(Expression<Func<T>> itemSpecifierExpression)
		{
		var bodyAsMemberExpression = itemSpecifierExpression.Body as MemberExpression;
		if (bodyAsMemberExpression == null)
			throw new ArgumentException("itemSpecifierExpression does not specify an object or an instance or type member");
		var propInfo = bodyAsMemberExpression.Member as MemberInfo;
		return bodyAsMemberExpression.Member.Name; 
		}

	}

}

public void RelocateChar(ref string text, int pos1, int pos2)
{
  char[] supportArray = text.ToCharArray();
  char supportChar;

  supportChar = supportArray[pos2];
  supportArray[pos2] = supportArray[pos1];
  supportArray[pos1] = supportChar;
  text = new string(supportArray);  
}

treuveni wrote:

What i'm doing wrong?
...
dt.Columns.Add(pi.Name, pi.PropertyType);

int count = 0;
while ((mask & 1) == 0)
{
    mask = mask >> 1;   // or mask = mask / 2;
    count++;
}