关于中gridview 字符串截取的方法

<style  type="text/css"> 

 .listover150 

{ 

width:150px; 

text-align:left; 

overflow:hidden; 

text-overflow:ellipsis;//超长设置省略号 

white-space:nowrap; 

} 

</style> 

 //列表加载处理 

   protected void gv_showReport_RowDataBound(object sender, GridViewRowEventArgs e) 

   { 

       if (e.Row.RowType == DataControlRowType.DataRow) 

       { 

           //当鼠标移开时还原背景色 

           e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c"); 

           e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#F4FBFF'"); 

           e.Row.Attributes.Add("onclick", "this.style.backgroundColor='#e2eaf1'"); 

       } 

       if (e.Row.RowType == DataControlRowType.Header) 

       { 

           e.Row.Attributes.Add("style", "background-image:url('../images/grid3-hrow.gif')"); 

       } 

       if (e.Row.RowType == DataControlRowType.DataRow) 

       { 

           //设置申请原因字符串显示长度 

           string strDISC = e.Row.Cells[4].Text.Trim(); 

           e.Row.Cells[4].Text = "<div class=/"listover150/">" + strDISC + "</div>"; 

           e.Row.Cells[4].ToolTip = strDISC;//鼠标放上去显示所有 

           //设置审批备注字符串截取长度 

           string str = e.Row.Cells[7].Text.Trim(); 

           e.Row.Cells[7].Text = "<div class=/"listover150/">" + str + "</div>"; 

           e.Row.Cells[7].ToolTip = str; 

       } 

   }