protected   void   DataList1_ItemDataBound(object   sender,   DataListItemEventArgs   e) 
        { 
                LinkButton   link   =   (LinkButton)e.Item.FindControl( "link1 "); 
                //这里就获取到了link
        }

------解决方案--------------------
也可以这样

protected   void   DataList1_ItemDataBound(object   sender,   DataListItemEventArgs   e)  
       {  
               LinkButton   link   =   e.Item.FindControl( "link1 ") as LinkButton;  
       }  


------解决方案--------------------
探讨


也可以这样

protected   void   DataList1_ItemDataBound(object   sender,   DataListItemEventArgs   e) 
        { 
                LinkButton   link   =   e.Item.FindControl( "link1 ") as LinkButton; 
……


------解决方案--------------------
加个判断可能好点

   protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
       {
           if(e.Item.ItemType==ListItemType.Item)
           {
                LinkButton link = e.Item.FindControl( "link1 ") as LinkButton;  
           }
       }
   
 } 


------解决方案--------------------
<asp:LinkButton ID="LinkButton1" CommandName="sl" CommandArgument='传入阐述' runat="server" >收录</asp:LinkButton>

protected void DataList1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "sl")
    {
        //执行点击事件
        Response.Write(e.CommandArgument);//输出传入的参数
    }
}

------解决方案--------------------
HTML code
 <asp:LinkButton ID="LinkButton1" runat="server" CommandArgument='<%#Eval("ID") %>' onclick="LinkButton1_Click">LinkButton</asp:LinkButton>