MailDefinition 类
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
允许控件用文本文件或字符串创建电子邮件。 此类不能被继承。
public ref class MailDefinition sealed : System::Web::UI::IStateManager[System.ComponentModel.Bindable(false)]
[System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.EmptyStringExpandableObjectConverter))]
public sealed class MailDefinition : System.Web.UI.IStateManager[<System.ComponentModel.Bindable(false)>]
[<System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.EmptyStringExpandableObjectConverter))>]
type MailDefinition = class
interface IStateManagerPublic NotInheritable Class MailDefinition
Implements IStateManager- 继承
-
MailDefinition
- 属性
- 实现
示例
下面的代码示例从 Web 窗体页创建 Internet 电子邮件。 可以在窗体中输入邮件的文本，也可以输入要用作邮件正文的文本文件的名称。 该代码定义邮件的两个字符串替换：窗体的“收件人”文本框中的收件人列表将替换字符串“<%To%>”，属性中指定的 From 文本将替换字符串“<%From%>”。
在此代码生成的 Web 窗体页上，可以单击“ 创建电子邮件并仅显示 ”以创建电子邮件并在网页中显示 对象的属性 MailMessage 。 单击“ 创建电子邮件并发送 ”，在网页中显示电子邮件，并使用 Internet 电子邮件将邮件发送给收件人。
重要
此控件有一个接受用户输入的文本框，这是一个潜在的安全威胁。 默认情况下，ASP.NET 网页验证用户输入是否不包含脚本或 HTML 元素。 有关详细信息，请参阅脚本侵入概述。
<%@ page language="C#"%>
<%@ import namespace="System.Net.Mail"%>
<%@ import namespace="System.Reflection"%>
<%@ import namespace="System.Collections.Specialized"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
HtmlTable ShowMessage(System.Net.Mail.MailMessage msg)
{
HtmlTable table = new HtmlTable();
HtmlTableRow topRow = new HtmlTableRow();
HtmlTableCell fieldHeaderCell = new HtmlTableCell();
HtmlTableCell valueHeaderCell = new HtmlTableCell();
fieldHeaderCell.InnerText = "Field";
topRow.Cells.Add(fieldHeaderCell);
valueHeaderCell.InnerText = "Value";
topRow.Cells.Add(valueHeaderCell);
table.Rows.Add(topRow);
foreach(PropertyInfo p in msg.GetType().GetProperties())
{
HtmlTableRow row = new HtmlTableRow();
HtmlTableCell labelCell = new HtmlTableCell();
HtmlTableCell valueCell = new HtmlTableCell();
if (!((p.Name == "Headers") ||
(p.Name == "Fields") ||
(p.Name == "Attachments")))
{
labelCell.InnerText = String.Format("{0}",p.Name);
row.Cells.Add(labelCell);
valueCell.InnerText = String.Format("{0}",p.GetValue(msg,null));
row.Cells.Add(valueCell);
}
table.Rows.Add(row);
}
return table;
}
System.Net.Mail.MailMessage CreateMessage()
{
// <Snippet2>
MailDefinition md = new MailDefinition();
// </Snippet2>
// <Snippet3>
md.BodyFileName = sourceMailFile.Text;
// </Snippet3>
// <Snippet4>
md.CC = sourceCC.Text;
// </Snippet4>
// <Snippet5>
md.From = sourceFrom.Text;
// </Snippet5>
// <Snippet6>
md.Subject = sourceSubject.Text;
// </Snippet6>
// <Snippet10>
if (sourcePriority.SelectedValue == "Normal")
{
md.Priority = MailPriority.Normal;
}
else if (sourcePriority.SelectedValue == "High")
{
md.Priority = MailPriority.High;
}
else if (sourcePriority.SelectedValue == "Low")
{
md.Priority = MailPriority.Low;
}
// </Snippet10>
// <Snippet7>
ListDictionary replacements = new ListDictionary();
replacements.Add("<%To%>",sourceTo.Text);
replacements.Add("<%From%>", md.From);
// </Snippet7>
if (true == useFile.Checked)
{
// <Snippet8>
System.Net.Mail.MailMessage fileMsg;
fileMsg = md.CreateMailMessage(sourceTo.Text, replacements, this);
// </Snippet8>
return fileMsg;
}
else
{
// <Snippet9>
System.Net.Mail.MailMessage textMsg;
textMsg = md.CreateMailMessage(sourceTo.Text, replacements, sourceBodyText.Text, this);
// </Snippet9>
return textMsg;
}
}
void createEMail_Click(object sender, System.EventArgs e)
{
System.Net.Mail.MailMessage msg = CreateMessage();
PlaceHolder1.Controls.Add(ShowMessage(msg));
}
void sendEMail_Click(object sender, System.EventArgs e)
{
System.Net.Mail.MailMessage msg = CreateMessage();
PlaceHolder1.Controls.Add(ShowMessage(msg));
errorMsg.Text = String.Empty;
try {
SmtpClient sc = new SmtpClient();
sc.Send(msg);
}
catch (HttpException ex) {
errorMsg.Text = ex.ToString();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Create an email message</title>
</head>
<body>
<form id="Form1" runat="server">
<table id="Table1" cellspacing="1"
style="padding:1; width:450px; text-align:center">
<tr>
<td align="center" colspan="3">
<h3>Create an email message</h3>
</td>
</tr>
<tr>
<td align="right">To:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceTo" runat="server" columns="54">
</asp:textbox>
<asp:requiredfieldvalidator id="RequiredFieldValidator1"
runat="server" errormessage="*" controltovalidate="sourceTo">
</asp:requiredfieldvalidator>
</td>
</tr>
<tr>
<td align="right">Cc:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceCC" runat="server" columns="54">
</asp:textbox> </td>
</tr>
<tr>
<td align="right">From:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceFrom" runat="server" columns="54">
</asp:textbox>
<asp:requiredfieldvalidator id="RequiredFieldValidator2"
runat="server" errormessage="*" controltovalidate="sourceFrom">
</asp:requiredfieldvalidator>
</td>
</tr>
<tr>
<td align="right">Subject:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceSubject" runat="server" columns="54">
</asp:textbox> </td>
</tr>
<tr>
<td align="right">
Priority</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:dropdownlist id="sourcePriority" runat="server">
<asp:listitem value="Low">Low</asp:listitem>
<asp:listitem value="Normal" selected="true">Normal
</asp:listitem>
<asp:listitem value="High">High</asp:listitem>
</asp:dropdownlist> </td>
<td>
</td>
</tr>
<tr>
<td align="right">Source:</td>
<td style="WIDTH: 10px">
</td>
<td>
<table id="Table2" cellspacing="1" cellpadding="1" width="100%">
<tr>
<td style="WIDTH: 100px">
<asp:radiobutton id="useFile" runat="server" text="Use file"
width="80px" groupname="textSource" checked="True">
</asp:radiobutton> </td>
<td style="WIDTH: 11px">
</td>
<td>
<p style="text-align:right">File name:</p>
</td>
<td>
<asp:textbox id="sourceMailFile" runat="server" columns="22">
mail.txt</asp:textbox> </td>
</tr>
<tr>
<td style="WIDTH: 100px">
<asp:radiobutton id="useText" runat="server"
text="Enter text" width="80px" height="22px"
groupname="textSource">
</asp:radiobutton> </td>
<td style="WIDTH: 11px">
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
</td>
<td> </td>
</tr>
<tr>
<td align="center" colspan="3">
<asp:textbox id="sourceBodyText" runat="server" columns="51"
textmode="MultiLine" rows="15">
</asp:textbox> </td>
</tr>
<tr>
<td align="center" colspan="3">
<asp:button id="createEMail" runat="server"
text="Create email and display only"
onclick="createEMail_Click">
</asp:button>
<asp:button id="sendEMail" runat="server"
text="Create email and send">
</asp:button></td>
</tr>
</table>
<p> </p>
<p>
<asp:placeholder id="PlaceHolder1" runat="server">
</asp:placeholder>
</p>
<p>
<asp:literal id="errorMsg" runat="server">
</asp:literal>
</p>
</form>
</body>
</html>
<%@ page language="VB"%>
<%@ import namespace="System.Net.Mail"%>
<%@ import namespace="System.Reflection"%>
<%@ import namespace="System.Collections.Specialized"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Function ShowMessage(ByVal msg As System.Net.Mail.MailMessage) As HtmlTable
Dim table As HtmlTable = New HtmlTable
Dim topRow As HtmlTableRow = New HtmlTableRow
Dim fieldHeaderCell As HtmlTableCell = New HtmlTableCell
Dim valueHeaderCell As HtmlTableCell = New HtmlTableCell
fieldHeaderCell.InnerText = "Field"
topRow.Cells.Add(fieldHeaderCell)
valueHeaderCell.InnerText = "Value"
topRow.Cells.Add(valueHeaderCell)
table.Rows.Add(topRow)
Dim p As PropertyInfo
For Each p In msg.GetType().GetProperties()
Dim row As HtmlTableRow = New HtmlTableRow
Dim labelCell As HtmlTableCell = New HtmlTableCell
Dim valueCell As HtmlTableCell = New HtmlTableCell
If (Not ((p.Name = "Headers") Or _
(p.Name = "Fields") Or _
(p.Name = "Attachments"))) Then
labelCell.InnerText = String.Format("{0}", p.Name)
row.Cells.Add(labelCell)
valueCell.InnerText = String.Format("{0}", p.GetValue(msg, Nothing))
row.Cells.Add(valueCell)
End If
table.Rows.Add(row)
Next
Return table
End Function
Function CreateMessage() As System.Net.Mail.MailMessage
' <Snippet2>
Dim md As MailDefinition = New MailDefinition
' </Snippet2>
' <Snippet3>
md.BodyFileName = sourceMailFile.Text
' </Snippet3>
' <Snippet4>
md.CC = sourceCC.Text
' </Snippet4>
' <Snippet5>
md.From = sourceFrom.Text
' </Snippet5>
' <Snippet6>
md.Subject = sourceSubject.Text
' </Snippet6>
' <Snippet10>
If sourcePriority.SelectedValue = "Normal" Then
md.Priority = MailPriority.Normal
ElseIf sourcePriority.SelectedValue = "High" Then
md.Priority = MailPriority.High
ElseIf sourcePriority.SelectedValue = "Low" Then
md.Priority = MailPriority.Low
End If
' </Snippet10>
' <Snippet7>
Dim replacements As ListDictionary = New ListDictionary
replacements.Add("<%To%>", sourceTo.Text)
replacements.Add("<%From%>", sourceFrom.Text)
' </Snippet7>
If useFile.Checked Then
' <Snippet8>
Dim fileMsg As System.Net.Mail.MailMessage
fileMsg = md.CreateMailMessage(sourceTo.Text, replacements, Me)
' </Snippet8>
Return fileMsg
Else
' <Snippet9>
Dim textMsg As System.Net.Mail.MailMessage
textMsg = md.CreateMailMessage(sourceTo.Text, replacements, sourceBodyText.Text, Me)
' </Snippet9>
Return textMsg
End If
End Function
Sub createEMail_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim msg As System.Net.Mail.MailMessage = CreateMessage()
PlaceHolder1.Controls.Add(ShowMessage(msg))
End Sub
Sub sendEMail_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim msg As System.Net.Mail.MailMessage = CreateMessage()
PlaceHolder1.Controls.Add(ShowMessage(msg))
Try
Dim sc As SmtpClient
sc = New SmtpClient()
sc.Send(msg)
Catch ex As Exception
errorMsg.Text = ex.ToString()
End Try
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Create an email message</title>
</head>
<body>
<form id="Form1" runat="server">
<table id="Table1" cellspacing="1"
style="padding:1; width:450px; text-align:center">
<tr>
<td align="center" colspan="3">
<h3>Create an email message</h3>
</td>
</tr>
<tr>
<td align="right">To:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceTo" runat="server" columns="54">
</asp:textbox> <asp:requiredfieldvalidator
id="RequiredFieldValidator1" runat="server" errormessage="*"
controltovalidate="sourceTo">
</asp:requiredfieldvalidator>
</td>
</tr>
<tr>
<td align="right">Cc:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceCC" runat="server" columns="54">
</asp:textbox> </td>
</tr>
<tr>
<td align="right">From:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceFrom" runat="server" columns="54">
</asp:textbox> <asp:requiredfieldvalidator
id="RequiredFieldValidator2" runat="server" errormessage="*"
controltovalidate="sourceFrom">
</asp:requiredfieldvalidator>
</td>
</tr>
<tr>
<td align="right">
Priority</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:dropdownlist id="sourcePriority" runat="server">
<asp:listitem value="Low">Low</asp:listitem>
<asp:listitem value="Normal" selected="true">Normal</asp:listitem>
<asp:listitem value="High">High</asp:listitem>
</asp:dropdownlist> </td>
<td>
</td>
</tr>
<tr>
<td align="right">Subject:</td>
<td style="WIDTH: 10px">
</td>
<td>
<asp:textbox id="sourceSubject" runat="server" columns="54">
</asp:textbox> </td>
</tr>
<tr>
<td align="right">Source:</td>
<td style="WIDTH: 10px">
</td>
<td>
<table id="Table2" cellspacing="1" cellpadding="1" width="100%">
<tr>
<td style="WIDTH: 100px">
<asp:radiobutton id="useFile" runat="server"
text="Use file" width="80px" groupname="textSource"
checked="True">
</asp:radiobutton> </td>
<td style="WIDTH: 11px">
</td>
<td>
<p style="text-align:right">File name:</p>
</td>
<td>
<asp:textbox id="sourceMailFile" runat="server" columns="22">
mail.txt</asp:textbox> </td>
</tr>
<tr>
<td style="WIDTH: 100px">
<asp:radiobutton id="useText" runat="server"
text="Enter text" width="80px" height="22px"
groupname="textSource">
</asp:radiobutton> </td>
<td style="WIDTH: 11px">
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
</td>
<td> </td>
</tr>
<tr>
<td align="center" colspan="3">
<asp:textbox id="sourceBodyText" runat="server" columns="51"
textmode="MultiLine" rows="15">
</asp:textbox> </td>
</tr>
<tr>
<td align="center" colspan="3">
<asp:button id="createEMail" runat="server"
text="Create email and display only" onclick="createEMail_Click">
</asp:button>
<asp:button id="sendEMail" runat="server" text="Create email and send">
</asp:button></td>
</tr>
</table>
<p> </p>
<p>
<asp:placeholder id="PlaceHolder1" runat="server">
</asp:placeholder> </p>
<p>
<asp:literal id="errorMsg" runat="server">
</asp:literal></p>
</form>
</body>
</html>
注解
MailDefinition控件可以使用 类从文本文件或包含电子邮件正文的字符串创建 MailMessage 对象。 MailDefinition使用 类可简化创建由 控件发送的预定义电子邮件。 如果要不使用 控件发送电子邮件，请参阅 System.Net.Mail 类。
可以通过向 方法传递 CreateMailMessage 一个 IDictionary 将字符串映射到其替换项的实例，在电子邮件正文中替换文本。
类 MailMessage 创建 MailDefinition 的对象是使用 Send 类的 方法发送的 SmtpClient 。 若要发送电子邮件，必须在 Web.config 文件中配置 SMTP 邮件服务器。 有关详细信息，请参阅 <smtp> 元素 (网络设置) 。
注意
类 MailDefinition 不支持数据绑定。 类的属性 MailDefinition 不能使用 <%# %> 数据绑定表达式语法绑定到数据。
构造函数
| MailDefinition() |
初始化 MailDefinition 类的新实例。 |
属性
| BodyFileName |
获取或设置包含电子邮件正文文本的文件的名称。 |
| CC |
获取或设置将邮件的抄送件 (CC) 发送到的电子邮件地址的逗号分隔列表。 |
| EmbeddedObjects |
获取 EmbeddedMailObject 实例的集合，这些实例通常用于在将电子邮件发送给用户前，将图像嵌入到 MailDefinition 对象中。 |
| From |
获取或设置发件人的电子邮件地址。 |
| IsBodyHtml |
获取或设置一个值，该值指示电子邮件正文是否为 HTML。 |
| Priority |
获取或设置电子邮件的优先级。 |
| Subject |
获取或设置电子邮件的主题行。 |
方法
| CreateMailMessage(String, IDictionary, Control) |
用文本文件创建通过 SMTP（简单邮件传输协议）发送的电子邮件。 |
| CreateMailMessage(String, IDictionary, String, Control) |
用文本文件创建通过 SMTP（简单邮件传输协议）发送的带有替换内容的电子邮件。 |
| Equals(Object) |
确定指定对象是否等于当前对象。 (继承自 Object) |
| GetHashCode() |
作为默认哈希函数。 (继承自 Object) |
| GetType() |
获取当前实例的 Type。 (继承自 Object) |
| MemberwiseClone() |
创建当前 Object 的浅表副本。 (继承自 Object) |
| ToString() |
返回表示当前对象的字符串。 (继承自 Object) |
显式接口实现
| IStateManager.IsTrackingViewState |
获取一个值，用于指示服务器控件是否会将更改保存到其视图状态中。 |
| IStateManager.LoadViewState(Object) |
从用 SaveViewState() 方法保存的上一个页面请求还原视图状态信息。 |
| IStateManager.SaveViewState() |
保存将页面回发到服务器之后发生的所有服务器控件视图状态更改。 |
| IStateManager.TrackViewState() |
导致跟踪服务器控件的视图状态的更改，以便这些更改可以存储到服务器控件的 StateBag 对象中。 |
