2012-03-25 158 views
1

我很難找到一個解決方案,單擊瀏覽器的刷新按鈕時停止表單提交。表單提交瀏覽器刷新

這是登錄窗體我有:

<asp:Login ID="EMSLogin" runat="server" OnAuthenticate="EMSLogin_Authenticate"> 
    <LayoutTemplate> 
     <asp:Panel ID="Panel1" runat="server" CssClass="wrapper"> 
      <asp:Panel ID="Panel2" runat="server" CssClass="holder"> 
       <asp:Panel ID="Panel3" runat="server" CssClass="loginBox one_edge_shadow"> 
        <h1> 
         Login Credentials</h1> 
        <asp:Panel ID="Panel4" runat="server" CssClass="name topmargin"> 
         <asp:Panel ID="Panel5" runat="server" CssClass="label"> 
          <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">User Name:</asp:Label> 
         </asp:Panel> 
         <asp:Panel ID="Panel6" runat="server" CssClass="textBox"> 
          <telerik:RadTextBox ID="UserName" runat="server" Height="16px" Width="165px" Font-Size="14px" 
           Font-Names="Arial Sans-Serif" ToolTip="Enter your valid login name" /> 
          <asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" 
           ValidationGroup="EMSLogin">*</asp:RequiredFieldValidator> 
         </asp:Panel> 
         <br class="clearfix" /> 
        </asp:Panel> 
        <asp:Panel ID="Panel7" runat="server" CssClass="name topmargin"> 
         <asp:Panel ID="Panel8" runat="server" CssClass="label"> 
          <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label> 
         </asp:Panel> 
         <asp:Panel ID="Panel9" runat="server" CssClass="textBox"> 
          <telerik:RadTextBox ID="Password" runat="server" TextMode="Password" Height="16px" 
           Width="165px" Font-Size="14px" Font-Names="Arial Sans-Serif" ToolTip="Enter your valid password" /> 
          <asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password" 
           ValidationGroup="EMSLogin">*</asp:RequiredFieldValidator> 
         </asp:Panel> 
         <br class="clearfix" /> 
         <telerik:RadButton ID="LoginButton" runat="server" CommandName="Login" Text="Log In" 
          CssClass="loginButton" Font-Size="14px" Width="100px" ValidationGroup="EMSLogin" 
          ToolTip="Click to log in" /> 
        </asp:Panel> 
       </asp:Panel> 
      </asp:Panel> 
     </asp:Panel> 
    </LayoutTemplate> 
</asp:Login> 

而在後端:

protected void Page_Load(object sender, EventArgs eventArgs) { 
    log.Info("=============INSIDE Page_Load======"); 
    DataBind(); 
    LoginErrorWindow.VisibleOnPageLoad = false;  
} 

protected void EMSLogin_Authenticate(object sender, AuthenticateEventArgs e) { 
    log.Info("=============INSIDE EMSLogin_Authenticate======"); 
    RadTextBox UserName = EMSLogin.FindControl("UserName") as RadTextBox; 
    RadTextBox Password = EMSLogin.FindControl("Password") as RadTextBox; 

    if (Membership.ValidateUser(UserName.Text, Password.Text)) { 
    FormsAuthentication.RedirectFromLoginPage(UserName.Text, false); 
    } else { 
    LoginErrorWindow.NavigateUrl = EMSApplication.Web.Utils.NavigationUtils.GetLoginErrorDialogURL(); 
    LoginErrorWindow.VisibleOnPageLoad = true; 
    } 
} 

現在,經過一個登錄失敗,如果我按方法EMSLogin_Authenticate再次執行的刷新按鈕。而重裝前它顯示:

enter image description here

我該如何解決這個問題?

回答

3

在登錄失敗後,執行Response.Redirect錯誤頁面。

請參閱維基百科上的PRG pattern

Post/Redirect/Get(PRG)是一種Web開發設計模式,可防止一些重複的表單提交,爲用戶代理(用戶)創建更直觀的界面。 PRG以可預測的方式實現書籤和刷新按鈕,不會創建重複的表單提交。