Multi Column Combo Cell for the .NET 2.0 DataGridView Control

newColumn.DataPropertyName = Sds.Tables[0].Columns[0].ColumnName;<br />
            newColumn.DisplayMember = Sds.Tables[0].Columns[0].ColumnName;<br />
            newColumn.ValueMember = Sds.Tables[0].Columns[1].ColumnName;

if(currentRow!=null)
{
   // Here is the original source that I have omitted 
}
else
{
        string currentText = GetItemText(Items[e.Index]);

        //first redraw the normal while background
        SolidBrush normalBack = new SolidBrush(Color.White); //TODO: fix to be system edit box background
        e.Graphics.FillRectangle(normalBack, rec);


	if (DroppedDown && !(Margin.Top == rec.Top))
	{


		Type objectType = objCurrentItem.GetType();

		PropertyInfo propertyDisplay = objectType.GetProperty(this.DisplayMember);
		PropertyInfo propertyValue = objectType.GetProperty(this.ValueMember);

		PropertyInfo[] properties = new PropertyInfo[] { propertyValue, propertyDisplay };


		int currentOffset = rec.Left;

		SolidBrush HightlightedBack = new SolidBrush(System.Drawing.SystemColors.Highlight);
		if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
		{
			//draw selected color background
			e.Graphics.FillRectangle(HightlightedBack, rec);
		}

		bool addBorder = false;


		foreach (PropertyInfo p in properties)
		{
			string value = p.GetValue(objCurrentItem, null).ToString(); //TODO: support for different types!!!

			if (addBorder)
			{
				//draw dividing line
				//currentOffset ++; 
				SolidBrush gridBrush = new SolidBrush(Color.Gray); //TODO: make the border color configurable
				long linesNum = lineWidth;
				while (linesNum > 0)
				{
					linesNum--;
					Point first = new Point(rec.Left + currentOffset, rec.Top);
					Point last = new Point(rec.Left + currentOffset, rec.Bottom);
					e.Graphics.DrawLine(new Pen(gridBrush), first, last);
					currentOffset++;
				}
			}
			else
			{
				addBorder = true;
			}

			SizeF extent = e.Graphics.MeasureString(value, e.Font);
			decimal width = (decimal)extent.Width;
			//measure the string that we are goin to draw and cut it with wrapping if too large
			Rectangle textRec = new Rectangle(currentOffset, rec.Y, (int)decimal.Ceiling(width), rec.Height);

			//now draw the relevant to this column value text
			if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
			{
				//draw selected
				SolidBrush HightlightedText = new SolidBrush(System.Drawing.SystemColors.HighlightText);
				//now redraw the backgrond it order to wrap the previous field if was too large
				e.Graphics.FillRectangle(HightlightedBack, currentOffset, rec.Y, fixedAlignColumnSize, extent.Height);
				//draw text as is 
				e.Graphics.DrawString(value, e.Font, HightlightedText, textRec);
			}
			else
			{
				//now redraw the backgrond it order to wrap the previous field if was too large
				e.Graphics.FillRectangle(normalBack, currentOffset, rec.Y, fixedAlignColumnSize, extent.Height);
				//draw text as is 
				e.Graphics.DrawString(value, e.Font, NormalText, textRec);
			}
			//advance the offset to the next position
			currentOffset += fixedAlignColumnSize;
		}
	}
	else
	{
		//if happens when the combo is closed, draw single standard item view
		e.Graphics.DrawString(currentText, e.Font, NormalText, rec);
	}


}