GridView怪问题，望高手进来看看
在做GridView绑定的过程中为了实现单击行，此行变色的时候
发现一个怪现象
就是在单击零行时，该行的颜色没有任何的变化，不知道为什么


下面是我的代码：劳驾高手看看

前台：
asp:GridView   ID= "gvLeveling "   runat= "server "   AutoGenerateColumns= "False "  
                                BorderColor= "#000000 "     BorderWidth= "1px "   CellPadding= "3 "   meta:resourcekey= "gvLevelingEmpty "   OnRowCreated= "gvLeveling_RowCreated "   OnRowDataBound= "gvLeveling_DataBound ">
                                <Columns>
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= " "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= " "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= " "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= "project_name "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= "project_cd "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= "project_importance "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= "pstart_date "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= "pfinish_date "   />
                                        <asp:BoundField   ItemStyle-HorizontalAlign= "Center "   ItemStyle-BorderColor= "#000000 "   DataField= "status "   />