为了降低代码冗余，应将公共函数写在类中，供不同ASP.NET页面调用。
1，先新建一个类，并在类中加入函数逻辑
namespace public_function_demo
{
public class MyFunction
{
public static string tbName(string tbNo)
{
if (tbNo == "510101")
{ return "3GPP 51.010-1"; }
else
{
return "3GPP 51.010-4";
}
}
}
}2，在目标程序中引用刚才创建类的namespace，调用自己定义的函数
ASP.NET前台
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>C#后台实现
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using public_function_demo; namespace public_function_demo { public partial class WebForm1 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Label1.Text = public_function_demo.MyFunction.tbName("510101"); } } }