响应.写入标签
本文关键字:标签 响应 | 更新日期: 2023-09-27 18:30:07
我在表单上有下面的代码,这样用户就可以提交表单并发送电子邮件。我有两个response.write语句,我想更改它们,以便它将它们写入标签(lblSubmit)。如有任何帮助,我们将不胜感激。
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
SmtpClient sc = new SmtpClient("smtp.talktalk.net");
StringBuilder sb = new StringBuilder();
MailMessage msg = null;
sb.Append("Email from: " + txtEmail.Text + "'n");
sb.Append("Message : " + txtQuestion.Text + "'n");
try
{
msg = new MailMessage(txtEmail.Text,
"myemail@talktalk.net", "Message from Web Site",
sb.ToString());
sc.Send(msg);
Response.Write("Message sent!");
}
catch (Exception ex)
{
// something bad happened
Response.Write("Something bad happened!");
}
finally
{
if (msg != null)
{
msg.Dispose();
}
}
}
}
</script>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<div id="title"><p>Contact Us...</p></div>
<div id="titletext"><p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.</p></div>
<div id="contactform">
<asp:Label ID="lblName" runat="server" Text="Name:"></asp:Label>
<asp:TextBox ID="txtName" runat="server" Width="189px"></asp:TextBox>
<br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server"
ControlToValidate="txtName" ErrorMessage="Please enter your name"
ForeColor="Red" Display="Dynamic"></asp:RequiredFieldValidator>
<br /><br />
<asp:Label ID="lblEmail" runat="server" Text="Email:"></asp:Label>
<asp:TextBox ID="txtEmail" runat="server" Width="189px"></asp:TextBox>
<br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="txtEmail" Display="Dynamic" ErrorMessage="Please enter an email address"
ForeColor="Red"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
ControlToValidate="txtEmail" ErrorMessage="Please enter a valid Email address"
ForeColor="Red"
ValidationExpression="'w+([-+.']'w+)*@'w+([-.]'w+)*'.'w+([-.]'w+)*"
Display="Dynamic"></asp:RegularExpressionValidator>
<br />
<br />
<asp:Label ID="lblPhone" runat="server" Text="Phone:"></asp:Label>
<asp:TextBox ID="txtPhone" runat="server" Width="189px"></asp:TextBox>
<br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server"
ControlToValidate="txtPhone"
ErrorMessage="Please enter a contact telephone number" ForeColor="Red"
Display="Dynamic"></asp:RequiredFieldValidator>
<br />
<asp:Label ID="lblQuestion" runat="server" Text="Question:"></asp:Label>
<asp:TextBox ID="txtQuestion" runat="server" Height="103px" TextMode="MultiLine"
Width="189px"></asp:TextBox>
<br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"
ControlToValidate="txtQuestion" ErrorMessage="Please enter a message"
ForeColor="Red"></asp:RequiredFieldValidator>
<asp:Label ID="lblSubmit" runat="server"></asp:Label>
<asp:Button ID="cmdSubmit" runat="server" Text="Submit" CssClass="cmdSubmit"
onclick="cmdSubmit_Click" PostBackUrl="~/Contact Us.aspx" />
</div>
</asp:Content>
Label
控件的文本,只需在其.Text
属性中设置一个值。因此,取而代之的是:
Response.Write("some string");
你会有这个:
lblSomeLabel.Text = "some string";
这是比Response.Write
更受欢迎的,因为标签控件允许您在页面上指定一个位置作为占位符。Response.Write
只是盲目地将字符串写入响应,可能会将其附加在HTML的其余部分之后,或者在在中间某个未定义的位置。
请注意,Label
控件将文本包装在span
元素中。如果要输出具有完整标记控制的原始数据,请考虑使用Literal
控件。
顺便说一下,对您的代码有几句建议。。。
查看C#中的using
语句。它以一种更优雅的方式处理任何实现IDisposable
的东西(任何需要调用.Dispose()
的东西)的try/finally
构造。从本质上讲,它省去了您自己编写处置代码的需要,并产生了更干净、更安全的代码。
在catch
语句中,您当前完全忽略了实际捕获的异常。这是故意的吗?还是用这个代码来修复你计划的这一部分?作为一般规则,从不丢弃异常数据。它包含发生了什么(与"发生了不好的事情"相反)以及在哪里发生的实际错误消息。
如果您有ASP.NET标签控件,则可以设置该控件的Text属性值。
<asp:Label ID="lblSubmit" runat="server" Text="Label"></asp:Label>
在代码中,
lblSomeLabel.Text = "Email Sent";
您甚至可以使用带有runat="server"属性的Div控件,并从代码中设置其内部html
<div id="divMessage" runat="server" />
在代码中,
divMessage.innerHTML="Email Sent!";
最好使用labelname.text="yourtext";
或者如上所述的标签的文本属性值。