ASPX按钮 - 没有任何反应

Question

我在aspx页面上有一个按钮,应该发送一封电子邮件...我的代码似乎设置正确,但是当点击按钮时,没有任何反应.这是代码.它旨在显示警报然后重定向到成功页面但没有任何反应......

没有onclick,但根据这个,不应该有:http://www.velocityreviews.com/forums/t367616-using-handles-vb-vs-c.html此外,我从这里得到这个代码的指南虽然它已经过时了,但也要使用onclick.

标记是:

<%@ Page Title="Sign Up" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeBehind="signup.aspx.cs" Inherits="WebApplication2._Default" %>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<h2>
    Email Service
</h2>

Re-enter your email address to confirm signup for updates. 
<br />
<table border="0">
<tr>
    <td><b>Email:</b></td>
    <td><asp:TextBox runat="server" ID="UsersEmail" Columns="30"></asp:TextBox></td>
</tr>
<tr>
    <td colspan="2" align="center">
        <asp:Button runat="server" ID="SendEmail" Text="Sign Up"/>
    </td>
</tr>
</table>

代码隐藏是:

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void SendEmail_Click(object sender, EventArgs e) //Handles SendEmail.Click
    {
        try
        {
            //!!! UPDATE THIS VALUE TO YOUR EMAIL ADDRESS
            string ToAddress = "info@removed.org";

            //(1) Create the MailMessage instance
            MailMessage mm = new MailMessage(UsersEmail.Text, ToAddress);

            //(2) Assign the MailMessage's properties

            mm.Subject = UsersEmail.Text + " would like to sign up for updates";
            mm.Body = "Hello, I would like to sign up for updates. My email is " + UsersEmail.Text + ". Thank you.";
            mm.IsBodyHtml = false;

            //(3) Create the SmtpClient object
            SmtpClient smtp = new SmtpClient("[removed]");
            smtp.DeliveryMethod = SmtpDeliveryMethod.Network;

            //(4) Send the MailMessage (will use the Web.config settings)
            smtp.Send(mm);
        }
        catch (Exception ex)
        {
            string strError = "<Script language=javascript>alert('Error');</Script>";
            Response.Write(strError);
            Response.Redirect("Success.aspx");

        }

        string strMsg = "<Script language=javascript>alert('Emailsent');</Script>";
        Response.Write(strMsg);
        Response.Redirect("Success.aspx");

        //System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE=""JavaScript"">alert(""Hello this is an Alert"")</SCRIPT>");
    }

}

}

我真的怀疑onclick无论如何都是解决方案,因为那不处理任何代码..

有任何想法吗？谢谢.

Answer 1

将处理程序添加到事件中

<asp:Button runat="server" ID="SendEmail" Text="Sign Up" OnClick="SendEmail_Click"/>

下一个:

如果你这样做:

catch (Exception ex)
        {
            string strError = "<Script language=javascript>alert('Error');</Script>";
            Response.Write(strError);
            Response.Redirect("Success.aspx");

        }

你不会对错误有任何了解,因为第一个原因因为重定向是这样的,因此javascript代码将无法运行,下一个原因就是抓住这样的异常,不做任何事,你' ll松开如何修复它的说明.

如果你认为它会膨胀,你不需要在标记中设置处理程序.你可以在代码中做到这一点

public class _Default : System.Web.Page

{
    public _Default()
    {
         this.Init += (_o, _e) =>
          {
              SendEmail.Click += SendEmail_Click;
          };
    }
}