asp.net一段代码.有错误,可我怎么也找不出来.(50分)

<asp:datagrid id="mydatagrid" runat="server" allowpaging="true" pagesize=5 onpageindexchanged="outchange" showheader="true" headerstyle.backcolor="#0066ff" headerstyle.forecolor="#ffffff" horizontalalign="center" background="e:/asp/pic/c1.gif" bordercolor="#ff0000" cellpadding=2 cellspacing=1 itemstyle.horizontalalign="center" alternatingitemstyle.backcolor="#ffffcc"/>

//这段试试
<asp:datagrid id="mydatagrid" runat="server" AllowPaging="true" PageSize="5" OnPageIndexChanged="outchange"
ShowHeader="true" HeaderStyle-BackColor="#0066ff" AlternatingItemStyle-ForeColor="#ffffff"
HorizontalAlign="center" background="e:/asp/pic/c1.gif" BorderColor="#ff0000" CellPadding="2"
CellSpacing="1" ItemStyle-HorizontalAlign="center" AlternatingItemStyle-BackColor="#ffffcc" />