为了实现.Net window DataGrid 的某一行可以根据该行某列的值的内容设定该行颜色的功能.

先贴一个连接,里面有DataGrid很多功能扩充的解决方案Windows Forms Datagrid

不过没有我这个需求的解决方案,最后终于还是在同事的帮助下搞定了.


由某一个单元格的值设定该单元格的颜色的实现我就不贴了,上面的连接里面有解决方案.
下面是由某列的值设定整行颜色的一个解决方案. 关键是在定制的DataGridTextBoxColumn里面添加一个DataView的属性,另外重载Paint() .  
在使用DataGridTextBoxColumn的时候,将DataGrid绑定的DataView赋值给它.

public class public class DataGridColoredTextBoxColumn : DataGridTextBoxColumn
{
  private  System.Data.DataView m_bindDataView;
  public DataView BindingDataView
  {
   get
   {
    return m_bindDataView;
   }
   set
   {
    m_bindDataView = value;
   }
  }

  protected override void Paint(System.Drawing.Graphics g,
   System.Drawing.Rectangle bounds, System.Windows.Forms.CurrencyManager
   source, int rowNum, System.Drawing.Brush backBrush, System.Drawing.Brush
   foreBrush, bool alignToRight)
  {
   // the idea is to conditionally set the foreBrush and/or backbrush
   // depending upon some crireria on the cell value
   // Here, we color anything that begins with a letter higher than 'F'
   try
   {
     //从DataView中取值，"ItemType"为行的名称
     string colValue = this.BindingDataView[rowNum]["ItemType"].ToString();     
     char val = colValue[0];

     if( val > 'F' ) //如果首字母大于 'F'
     {
      backBrush = new SolidBrush(Color.BlueViolet );
      foreBrush = new SolidBrush(Color.White);
     }
   }
   catch(Exception ex)
   {
    //empty catch
   }
   finally
   {
    // make sure the base class gets called to do the drawing with
    // the possibly changed brushes
    base.Paint(g, bounds, source, rowNum, backBrush, foreBrush, alignToRight);
   }
  }

}

使用的例子
DataGridColoredTextBoxColumn colExceptionType = new DataGridColoredTextBoxColumn();
   colItemType.BindingDataView = dtOrderItem.DefaultView; //将table的view赋值
   colItemType.HeaderText =“ItemType”;
   colItemType.MappingName = “ItemType“;
   colItemType.Width = 90;
   colItemType.NullText = "";
   tablestyle.GridColumnStyles.Add(colItemType);

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