wedav读取exchange（2003）邮件信息
第一次做webdav方法读取excahnge邮件方面的东西，将网上查找到的代码改成了.ascx控件，后台代码如下：代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.Data;
using System.Xml;
namespace SharePoint.Exchange2003
{
public class unreadmailcontrol : UserControl
{
GridView GridView1;
protected void Page_Load(object sender, EventArgs e)
{
try
{
GridView1 = (GridView)this.FindControl("GridView1");
GridView1.DataSource = GetUnReadMail();
GridView1.DataBind();
}
catch (Exception ex)
{
}
}
private DataTable GetUnReadMail()
{
string url = "http://ip/exchange/"; //指定Exchange服务器地址
System.Net.HttpWebRequest Request;
System.Net.WebResponse Response;
System.Net.CredentialCache MyCredentialCache;
string strUserName = "administrator"; //指定登录的用户名
string strRootURI = url + strUserName.Trim() + "/收件箱/"; //得到要访问邮箱的WebDAV地址
string strPassword = "test"; //指定该用户的密码
string strDomain = "test"; //指定域名
string strQuery = "";
byte[] bytes = null;
System.IO.Stream RequestStream = null;
System.IO.Stream ResponseStream = null;
XmlDocument ResponseXmlDoc = null;
XmlNodeList HrefNodes = null;
XmlNodeList SizeNodes = null;
int count = 0;
try
{
// 用SQL查询WebDAV返回结果中的unreadcount节点.
//strQuery = "<?xml version=\"1.0\"?><D:searchrequest xmlns:D = \"DAV:\" >"
// + "<D:sql>SELECT \"DAV:displayname\",\"urn:schemas:httpmail:subject\",\"urn:schemas:httpmail:unreadcount\" FROM \"" + strRootURI + "\""
// + "</D:sql></D:searchrequest>";
strQuery = "<?xml version=\"1.0\"?><D:searchrequest xmlns:D = \"DAV:\" >"
+ "<D:sql>SELECT \"urn:schemas:httpmail:importance\",\"urn:schemas:httpmail:from\",\"urn:schemas:httpmail:read\",\"urn:schemas:httpmail:datereceived\",\"urn:schemas:httpmail:subject\",\"urn:schemas:httpmail:hasattachment\","
+ "\"DAV:contentclass\",\"DAV:getcontentlength\",\"DAV:displayname\""
+ "FROM \"" + strRootURI + "\""
+ "WHERE \"DAV:ishidden\" = false AND \"DAV:isfolder\" = false"
+ "</D:sql></D:searchrequest>";
// 创建新的CredentialCache对象，构建身份凭据
MyCredentialCache = new System.Net.CredentialCache();
MyCredentialCache.Add(new System.Uri(strRootURI),
"NTLM",
new System.Net.NetworkCredential(strUserName, strPassword, strDomain)
);
// Create the HttpWebRequest object.
Request = (System.Net.HttpWebRequest)HttpWebRequest.Create(strRootURI);
// 指定HttpWebRequest的身份凭据，此处为关键所在。如果使用之前
// 创建的MyCredentialCache，则这个身份凭据是可以从Web服务器传递
// 到Exchange服务器的，但是这样带来的问题也很明显，就是不能够自
// 动获取当前登录到域的用户的身份。即便已经成功登录到域，那也只
// 能通过form再次输入用户名密码。因此，我在这里用的是
// Request.Credentials = CredentialCache.DefaultCredentials，
// 这样便可以获得当前用户的凭据，但是这样带来的问题便是上面提到的
// 身份凭据无法传递的问题，解决方法请关注下篇文章。
Request.Credentials = MyCredentialCache;
// 指定WebDAV的SEARCH方法
Request.Method = "SEARCH";
// Encode the body using UTF-8.
bytes = Encoding.UTF8.GetBytes((string)strQuery);
// Set the content header length. This must be
// done before writing data to the request stream.
Request.ContentLength = bytes.Length;
// Get a reference to the request stream.
RequestStream = Request.GetRequestStream();
// Write the SQL query to the request stream.
RequestStream.Write(bytes, 0, bytes.Length);
// Close the Stream object to release the connection
// for further use.
RequestStream.Close();
// Set the content type header.
Request.ContentType = "text/xml";
// Send the SEARCH method request and get the
// response from the server.
Response = (HttpWebResponse)Request.GetResponse();
// Get the XML response stream.
ResponseStream = Response.GetResponseStream();
// 创建XmlDocument对象，并获取收件箱的unreadcount节点的值
ResponseXmlDoc = new XmlDocument();
ResponseXmlDoc.Load(ResponseStream);
//HrefNodes = ResponseXmlDoc.GetElementsByTagName("a:displayname");
//SizeNodes = ResponseXmlDoc.GetElementsByTagName("d:unreadcount");
//for (int i = 0; i < HrefNodes.Count; i++)
//{
// if (HrefNodes.InnerText == "收件箱")
// count = int.Parse(SizeNodes.InnerText);
//}
//ResponseStream.Close();
//Response.Close();
XmlNodeList idNodes = ResponseXmlDoc.GetElementsByTagName("a:displayname");
XmlNodeList SenderNodes = ResponseXmlDoc.GetElementsByTagName("d:from");
XmlNodeList importanceNodes = ResponseXmlDoc.GetElementsByTagName("d:importance");
XmlNodeList contextclassNodes = ResponseXmlDoc.GetElementsByTagName("a:contentclass");
XmlNodeList readNodes = ResponseXmlDoc.GetElementsByTagName("d:read");
XmlNodeList datareceiveNodes = ResponseXmlDoc.GetElementsByTagName("d:datereceived");
XmlNodeList subjectNodes = ResponseXmlDoc.GetElementsByTagName("d:subject");
XmlNodeList getcontentlengthNodes = ResponseXmlDoc.GetElementsByTagName("a:getcontentlength");
XmlNodeList hasattachmentNodes = ResponseXmlDoc.GetElementsByTagName("d:hasattachment");
XmlNodeList hrefNodes = ResponseXmlDoc.GetElementsByTagName("a:href");
DataTable dt = new DataTable();
dt.Columns.Add("Subject");
dt.Columns.Add("Href");
dt.Columns.Add("Time");
dt.Columns["Time"].DataType = Type.GetType("System.DateTime");
for (int j = 0; j < readNodes.Count; j++)
{
//if (readNodes.InnerText == "1")continue;//只取未读邮件
dt.Rows.Add(subjectNodes.InnerText, hrefNodes.InnerText, DateTime.Parse(datareceiveNodes.InnerText));
}
ResponseStream.Close();
Response.Close();
return dt;
}
catch
{
return null;
}
}
}
}
前台展示页面（.ascx）如下：
代码
<%@ Control Language="C#"Inherits="SharePoint.Exchange2003.unreadmailcontrol, SharePoint.Exchange2003, Version=1.0.0.0, Culture=neutral, PublicKeyToken=7da4c70ffa3a2438" %>
<style type="text/css">
img
{
border-style: none;
}
body
{
font-size: 12px;
}
.td
{
}
a
{
text-decoration: none;
color: #616161;
}
#header
{
width: 225px;
height: 20px;
background-repeat: no-repeat;
background-image: url(/_layouts/images/header.png);
padding-left: 180px;
padding-top: 4px;
}
#header a
{
color: #B88A00;
}
#dataTable
{
height: 259px;
width: 223px;
border-style: solid;
border-width: 1px;
border-color: Gray;
}
#mainDiv
{
}
</style>
<div id="mainDiv">
<div id="header">
<a href="http://ip/exchange/" target="_blank">更多...</a></div>
<div id="dataTable">
<asp:GridView ID="GridView1" runat="server" ShowHeader="False" AutoGenerateColumns="False"
Width="223px" RowStyle-Height="23px" RowStyle-CssClass="td" AllowPaging="True"
BorderColor="#CCCCCC" BorderStyle="Groove">
<PagerSettings Visible="False" />
<RowStyle CssClass="td" Height="23px"></RowStyle>
<Columns>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<img alt="" src="/_layouts/images/email.jpg" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False" ItemStyle-Height="23">
<ItemTemplate>
<div style="text-overflow: ellipsis; white-space: nowrap; overflow: hidden; width: 145px;
padding-left: 3px;">
<a id="LinkButton1" runat="server" href='<%# DataBinder.Eval(Container.DataItem, "Href") %> '
target="_blank">
<%# DataBinder.Eval(Container.DataItem, "Subject") %>
</a>
</div>
</ItemTemplate>
<ItemStyle Height="23px"></ItemStyle>
</asp:TemplateField>
<asp:BoundField DataField="Time" DataFormatString="{0:MM-dd}">
<ItemStyle Width="45px" ForeColor="Gray" Font-Names="Verdana" HorizontalAlign=" Center"
Font-Size="10px"></ItemStyle>
</asp:BoundField>
</Columns>
</asp:GridView>
</div>
</div>
可以方便的以上代码封装成webpart或者扩张其功能。
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