怎么样显示DataGrid序号？

override protected void OnPaint(PaintEventArgs e)

{

base.OnPaint(e);

try

{

if(this.DataSource!=null)

{

int yDelta;

System.Drawing .Rectangle cell=this.GetCellBounds(0,0);

int y=cell.Top +2;

e.Graphics.DrawString("编号", this.Font, new SolidBrush(Color.Black), 8, y-18); //

if(this.VisibleRowCount >0)//只在有记录集时在表格中显示序号

{

CurrencyManager cm;

cm = (CurrencyManager) this.BindingContext[this.DataSource, this.DataMember];

if(cm.Count >0)

{

int nRow=-1;

y=41; //为第一行默认高度

while(nRow<0)

{

nRow=this.HitTest (8,y).Row ;

y++;

}

int nCount=0;

while(y<this.Height && nCount<this.VisibleRowCount )

{

string text = string.Format("{0}", nRow+nCount+1);

e.Graphics.DrawString(text, this.Font, new SolidBrush(Color.Black), 10, y);

yDelta = this.GetCellBounds( nRow+nCount,0).Height + 1;//****表示一行高度的参数

y += yDelta;

//如果下面有子行显示序号的区分显示

if(this.IsExpanded (nRow+nCount)&& nRow+nCount+1<cm.Count ) {

y+=this.GetCellBounds (nRow+nCount+1,0).Height +3;

}

nCount++;

}

}

}

}

}

catch

{}

}

重载了DataGrid中的Paint，这样用起来会特别方便,区区雕虫小技，希望和大家共同分享。