[ASP.NET]利用String.Compare比較文字case-sensitive與insensitive

2008-10-15

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ASP.NET

最近剛好看到String.Compare的用法,除了做基本文字的比較
還可以設定是否case-sensitive(有大小寫之分的)與insensitive(沒有大小寫之分)

最近剛好看到String.Compare的用法,除了做基本文字的比較

還可以設定是否case-sensitive(有大小寫之分的)與insensitive(沒有大小寫之分)

asp.net(c#)
StringCompare.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="StringCompare.aspx.cs" Inherits="StringCompare" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>StringCompare</title> </head> <body> <form id="form1" runat="server"> <div> <asp:RadioButton ID="RadioButton1" runat="server" Checked="True" GroupName="Group" Text="case-sensitive" /> <asp:RadioButton ID="RadioButton2" runat="server" GroupName="Group" Text="insensitive" /><br /> <br /> <asp:Label ID="lblString1" runat="server" Text="String1"></asp:Label> <asp:TextBox ID="txbString1" runat="server"></asp:TextBox> <asp:Label ID="lblString2" runat="server" Text="String2"></asp:Label> <asp:TextBox ID="txbString2" runat="server"></asp:TextBox> <br /> <br /> <asp:Label ID="Label1" runat="server" Text="Compare Result"></asp:Label> <asp:TextBox ID="txbResult" runat="server"></asp:TextBox> <asp:Button ID="btnCompare" runat="server" OnClick="btnCompare_Click" Text="Compare" /></div> </form> </body> </html>

StringCompare.aspx.cs

using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class StringCompare : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void btnCompare_Click(object sender, EventArgs e) { int result; if (this.RadioButton1.Checked) { result = string.Compare(this.txbString1.Text, this.txbString2.Text, false);//case-sensitive } else { result = string.Compare(this.txbString1.Text, this.txbString2.Text, true);//insensitive } this.txbResult.Text = result.ToString(); } }

執行結果:

參考網址:

http://msdn.microsoft.com/zh-tw/library/e6883c06(VS.80).aspx
http://www.java2s.com/Code/VB/Language-Basics/CompareStringcasesensitiveandnotsensitive.htm

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