vb.net 参数“地址”不能是空字符串。参数名称：地址
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/18564898/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
The parameter 'address' cannot be an empty string. Parameter name: address
提问by user2738402
I realize this question has come up before but the answers don't answer my question directly, I've also searched the net for the last few days.
我意识到这个问题之前已经出现过，但答案并没有直接回答我的问题，最近几天我也在网上搜索。
The problem is, I have a asp.net VB form that sends to email.. However, it comes up with the error "The parameter 'address' cannot be an empty string. Parameter name: address"when I click on Submit. But the strange thing is, it still actually sends the email through with all relevant info included.
问题是，我有一个发送到电子邮件的 asp.net VB 表单。但是，当我单击提交时，它出现了错误“参数‘地址’不能是空字符串。参数名称：地址”。但奇怪的是，它实际上仍然发送了包含所有相关信息的电子邮件。
Anyone have any ideas as to why it's giving an error but still sending? I feel like it's something simple, but it's doing my head in! Let me know if you need other code snippets.
任何人都知道为什么它会出错但仍在发送？我觉得这很简单，但它正在做我的头脑！如果您需要其他代码片段，请告诉我。
Code Behind:
背后的代码：
Imports System.IO
Imports System.Net
Imports System.Net.Mail
Partial Class _default
Inherits System.Web.UI.Page
Protected Sub submitButton_Click(ByVal sender As Object, ByVal e As EventArgs) Handles submitButton.Click
'send new confirmation email
Try
'create the email message
Dim EmailMsg As New MailMessage()
'set the address and subject
EmailMsg.From = New MailAddress(emailTextBox.Text.ToString)
EmailMsg.To.Add("myemailaddress")
EmailMsg.Subject = "Website enquiry from " + firstnameTextBox.Text.ToString
'set the content
EmailMsg.Body = "First Name: " + firstnameTextBox.Text.ToString + "<br>" +
"Last Name: " + lastnameTextBox.Text.ToString + "<br>" +
"Reply to: " + emailTextBox.Text.ToString + "<br>" +
"Ph No.: " + phoneTextBox.Text.ToString + "<br>" +
"Dropdown value:" + DropDownList1.SelectedValue + "<br>" +
"Website Address: " + webAddressTextBox.Text.ToString + "<br>" +
"Other option: " + otherTextBox.Text.ToString
EmailMsg.IsBodyHtml = True
'send the message
Dim smtp As New SmtpClient()
smtp.Send(EmailMsg) 'uses web.config settings
'if successful clear form and show success message
firstnameTextBox.Text = String.Empty
lastnameTextBox.Text = String.Empty
emailTextBox.Text = String.Empty
phoneTextBox.Text = String.Empty
DropDownList1.SelectedValue = Val("0")
webAddressTextBox.Text = String.Empty
otherTextBox.Text = String.Empty
lblMessage.Text = "Message sent successfully!"
Catch ex As Exception
'show error message if unsuccessful
lblMessage.Text = ex.Message
End Try
End Sub
End Class
Web.config:
网页配置：
<configuration>
<system.net>
<mailSettings>
<smtp>
<network host="server"
port="25"
userName="myemailaddress"
password="mypassword"/>
</smtp>
</mailSettings>
Thanks heaps in advance
提前致谢
回答by DeanOC
Try using
尝试使用
EmailMsg.To.Add(New MailAddress("myemailaddress"))
I think you need to add MailAddress objects to your To list. I do in my code and I don't get any errors.
我认为您需要将 MailAddress 对象添加到您的 To 列表中。我在我的代码中做了，我没有收到任何错误。
回答by wolf
.net mismatch between your local DEV and production server
您的本地 DEV 和生产服务器之间的 .net 不匹配
