一個簡單的ASP.NET Forms 身份認證的實例方法

當訪問默認首頁defaultaspx時會自動跳轉到loginaspx頁面上請求登錄隨便輸入用戶名和密碼點擊“登錄”按鈕會回到首頁並顯示當前登錄的用戶名

　　Webconfig

復制代碼代碼如下:
<configuration>
<systemweb>
<compilation debug="true"/>
<authentication mode="Forms">
<forms loginUrl="loginaspx" name = "ASPXFORMSAUTH" />
</authentication>
<authorization>
<deny users="?"/>
</authorization>
</systemweb>
</configuration>

　　
defaultaspx

復制代碼代碼如下:
<HTML>
<HEAD>
<TITLE>首頁</TITLE>
<script language="VB" runat="server">
Sub Page_Load(Sender As Object e As EventArgs)
MessageText = StringFormat("你好{}" ContextUserIdentityName)
End Sub
sub btnSignout_Click(Sender as Object E as EventArgs)
FormsAuthenticationSignOut()
ResponseRedirect("loginaspx")
end sub
</script>
</HEAD>
<BODY>
<asp:label id="Message" runat="server"/>
<br>
<form method="post" runat="server">
<asp:button id="btnSignout" Text="退出登錄" runat="server" OnClick="btnSignout_Click"/>
</form>
</BODY>
</HTML>

　　
loginaspx

復制代碼代碼如下:

　　
<HEAD>
<TITLE>首頁</TITLE>
<script lanugage="c#" runat="server">
private void Page_Load(object sender EventArgs e)
{
if (RequestIsAuthenticated)
    ResponseRedirect("defaultaspx");
}
void btnLogin_Click(Object sender EventArgs e)
{
if (txtUsernameText != null && txtUsernameText != StringEmpty && txtPasswordText != null && txtPasswordText != StringEmpty)
   FormsAuthenticationRedirectFromLoginPage(txtUsernameText true);
else
   lblErrorText = "錯誤的用戶名/密碼";
}
</script>
</HEAD>
<BODY>
<form method="post" runat="server">
<asp:Label id="lblUsername" runat="server" Text="用戶名"/>

<asp:Textbox id="txtUsername" runat="server"/>
<br>
<br>
<asp:Label id="lblPassword" runat="server" Text="密　碼"/>

<asp:Textbox id="txtPassword" runat="server" TextMode="password"/>
<br>
<asp:button id="btnLogin" runat="server" Text="登錄" OnClick="btnLogin_Click" />
</form>
<hr>
<br>
<asp:Label id="lblError" forecolor="red" runat="server"/>
</BODY>
</HTML>

From:http://tw.wingwit.com/Article/program/net/201311/14178.html