行改变色

 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                string key = this.GridView1.DataKeys[e.Row.RowIndex].Value.ToString();
                e.Row.Attributes.Add("onmouseover", "if(this!=prevselitem){this.style.backgroundColor='#Efefef'};this.style.cursor='hand';");//当鼠标停留时更改背景色
                e.Row.Attributes.Add("onmouseout", "if(this!=prevselitem){this.style.backgroundColor='#ffffff'}");//当鼠标移开时还原背景色
                e.Row.Attributes.Add("onclick", e.Row.ClientID.ToString() + ".checked=true;selectx(this);setvalue('" + key + " ')");
                // e.Row.Attributes.Add("onclick", "alert('"  + key + " ')");
               
            }
        }

 <script type="text/javascript">
      var prevselitem=null;
       function selectx(row)
      {
              if(prevselitem!=null)
             {
                  prevselitem.style.backgroundColor='#ffffff';
               }
              row.style.backgroundColor='PeachPuff';
              prevselitem=row;
             
      }
      function setvalue(obj)
      {
      document.getElementById("Hidden1").value=obj;
      document.getElementById("dd").innerHTML=obj;
      alert(obj);
       document.all('Button1').click();
 
      }
  </script>