C# 字符串处理方法

///   <summary>
///   将指定字符串按指定长度进行剪切，
///   </summary>
///   <param   name= "oldStr "> 需要截断的字符串 </param>
///   <param   name= "maxLength "> 字符串的最大长度 </param>
///   <param   name= "endWith "> 超过长度的后缀 </param>
///   <returns> 如果超过长度，返回截断后的新字符串加上后缀，否则，返回原字符串 </returns>
public static string StringTruncat(string oldStr, int maxLength, string endWith)
{
if (string.IsNullOrEmpty(oldStr))
//   throw   new   NullReferenceException( "原字符串不能为空 ");
return oldStr + endWith;
if (maxLength < 1)
throw new Exception("返回的字符串长度必须大于[0] ");
if (oldStr.Length > maxLength)
{
string strTmp = oldStr.Substring(0, maxLength);
if (string.IsNullOrEmpty(endWith))
return strTmp;
else
return strTmp + endWith;
}
return oldStr;
}

<a href="<%# Eval(" mce_href="<%# Eval("WEBURL") %>"  width="100%" target="_blank" id="WEBURL1"><%# Eval("WEBURL").ToString().Length > 22 ? Eval("WEBURL").ToString().Substring(0, 22)+"..." : Eval("WEBURL").ToString()%></a>

<dxe:ASPxImage  runat="server" ID="IMGURL2"   ImageUrl='<%#Eval("IMGURL","~/bigregionimages/{0}") %>'  Height="150px" Width="150px"></dxe:ASPxImage>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
Width="100%" DataKeyNames="Id" onrowdeleting="GridView1_RowDeleting">
<RowStyle HorizontalAlign="Center" />
<Columns>
<asp:BoundField  DataField="Id" HeaderText="编号" />
<asp:BoundField DataField="Title" HeaderText="标题" />
<asp:BoundField DataField="AddTime" HeaderText="添加时间" />
<asp:TemplateField HeaderText="内容">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Content").ToString().Length>25?Eval("Content").ToString().Substring(0,25):Eval("Content").ToString() %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="所属栏目">
<ItemTemplate>
<a href='Admin_Article.aspx?Id=<%# Eval("ColumnId") %>'><%#Eval("ColumnName") %></a>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="状态">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Eval("State").ToString()=="0"?"显示":"隐藏" %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="允许评论">
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Eval("AllowRevert").ToString()=="0"?"是":"否" %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="置顶">
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%# Eval("AllowSetTop").ToString()=="0"?"是":"否" %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="操作">
<ItemTemplate>
<a href='Admin_AddFriend.aspx?Id=<%# Eval("Id") %>'>编辑</a>
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandName="Delete" Text="删除" CssClass="delete-link"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

string name = System.Text.RegularExpressions.Regex.Replace(Session["UserName"].ToString(), "\\d", "");