首先在前臺設置樣式
代碼如下:
<style  type="text/css"> 
 .listover150 
{ 
width:150px; 
text-align:left; 
overflow:hidden; 
text-overflow:ellipsis;//超長設置省略號 
white-space:nowrap; 
} 
</style> 

然后在后臺GridView中的RowDataBind中進行設置

,附帶幾句可以改變鼠標移動的樣式設置

  代碼如下:
 //列表加載處理 
   protected void gv_showReport_RowDataBound(object sender, GridViewRowEventArgs e) 
   { 

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

           //當鼠標移開時還原背景色 
           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) 
       { 
           //設置申請原因字符串顯示長度 
           string strDISC = e.Row.Cells[4].Text.Trim(); 
           e.Row.Cells[4].Text = "<div class=/"listover150/">" + strDISC + "</div>"; 
           e.Row.Cells[4].ToolTip = strDISC;//鼠標放上去顯示所有 

           //設置審批備注字符串截取長度 
           string str = e.Row.Cells[7].Text.Trim(); 
           e.Row.Cells[7].Text = "<div class=/"listover150/">" + str + "</div>"; 
           e.Row.Cells[7].ToolTip = str; 

       } 
   }