datagrid中的文本换行?

<%@ Page language="c#" Codebehind="ShowRecord.aspx.cs" AutoEventWireup="false" Inherits="XTWH.ShowRecord" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>工作记录明细</title>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
<style>P {
FONT-WEIGHT: normal; FONT-SIZE: 9pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif
}
A:link {
COLOR: #006699; TEXT-DECORATION: none
}
.small {
FONT-SIZE: 9pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif
}
TD {
FONT-WEIGHT: normal; FONT-SIZE: 9pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif
}
.cellbox {
BORDER-RIGHT: #55b4e1 1px solid; BORDER-TOP: #55b4e1 1px solid; BORDER-LEFT: #55b4e1 1px solid; BORDER-BOTTOM: #55b4e1 1px solid
}
.middle {
FONT-WEIGHT: bold; FONT-SIZE: 9pt; COLOR: #ffffff; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif
}
.cellboxright {
BORDER-RIGHT: #55b4e1 1px solid; BORDER-TOP: #55b4e1 1px solid; BORDER-BOTTOM: #55b4e1 1px solid
}
.cellendleft {
BORDER-LEFT: #55b4e1 1px solid; BORDER-BOTTOM: #55b4e1 1px solid
}
.cellendright {
BORDER-RIGHT: #55b4e1 1px solid; BORDER-BOTTOM: #55b4e1 1px solid
}
.cellend {
BORDER-RIGHT: #55b4e1 1px solid; BORDER-LEFT: #55b4e1 1px solid; BORDER-BOTTOM: #55b4e1 1px solid
}
</style>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<TABLE id="table1" height="100%" cellSpacing="0" cellPadding="0" width="765" align="center"
border="0">
<TBODY>
<TR>
<TD style="FONT-WEIGHT: normal; FONT-SIZE: 9pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif"
vAlign="top" align="center" borderColorDark="#f0faff">
<BR>
<TABLE id="table4" cellSpacing="0" cellPadding="0" width="89%">
<TBODY>
<TR>
<TD style="FONT-WEIGHT: normal; FONT-SIZE: 9pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif"
height="0"></TD>
</TR>
</TBODY>
</TABLE>
<FONT face="宋体">
<table id="table33" style="WIDTH: 668px; HEIGHT: 622px" borderColor="#55b4e1" cellSpacing="0"
borderColorDark="#ffffff" width="668" bgColor="#f0faff" border="1" runat="server">
<tr>
<td align="center" width="14%" height="602"><b><font face="宋体" color="#006699">意见<B><FONT face="宋体" color="#006699">评语</FONT></B></font></b></td>
<td vAlign="top" width="84%" height="602">
<FONT face="宋体"><asp:datagrid id="ReGrid" runat="server" Width="544px" BorderStyle="None" GridLines="Horizontal"
AutoGenerateColumns="False" CellPadding="3" BorderWidth="1px" BorderColor="#999999" ShowHeader="False">
<Columns>
<asp:BoundColumn Visible="False" DataField="ID" HeaderText="ID"></asp:BoundColumn>
<asp:BoundColumn DataField="RemText" HeaderText="内容"></asp:BoundColumn>
<asp:BoundColumn DataField="RemMen" HeaderText="评语人">

</asp:BoundColumn>
<asp:BoundColumn DataField="RemDate" HeaderText="日期时间">

</asp:BoundColumn>
<asp:ButtonColumn Text="&lt;IMG src=&quot;images/delete.gif&quot; border=&quot;0&quot;&gt;" HeaderText="删除"
CommandName="Delete">
</asp:ButtonColumn>
</Columns>
</asp:datagrid></FONT>
</td>
</tr>
</table>

</TD>
</TR>
</TBODY>
</TABLE>
</form>
</body>
</HTML>
其中的ReGrid(DataGrid)中,"内容"列总是不能自动换行,而其他列就可以.为什么呢?