Tài liệu Connecting to Exchange or Outlook ppt

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Recipe 1.10 Connecting to Exchange or Outlook
Problem
You want to use ADO.NET to extract data from Microsoft Outlook or Microsoft
Exchange.
Solution
Use the OLE DB Jet provider to access Exchange and Outlook data.
The sample code contains two event handlers:
Form.Load
Displays a form that allows the user to specify the mailbox name and mail profile
to connect to.
Connect Button.Click
Creates and opens a connection to Outlook or Exchange data using the OLE DB
.NET data provider. A DataAdapter is used to fill a table with the Subject and
Content of each message in the Inbox. The default view of the table is bound to a
data grid on the form.
The C# code is shown in Example 1-8
.
Example 1-8. File: ConnectExchangeDataForm.cs
// Namespaces, variables, and constants
using System;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;

// . . .

private void ConnectExchangeDataForm_Load(object sender,
System.EventArgs e)

{
mailboxNameTextBox.Text = "Personal Folders";
profileTextBox.Text = "Outlook";
}

private void connectButton_Click(object sender, System.EventArgs e)
{
String sqlText = "SELECT Subject, Contents FROM Inbox";

// Build the connection string.
String connectionString="Provider=Microsoft.Jet.OLEDB.4.0;" +
"Outlook 9.0;" +
"MAPILEVEL=" + mailboxNameTextBox.Text + "|;" +
"PROFILE=" + profileTextBox.Text + ";" +
"TABLETYPE=0;" +
"DATABASE=" + System.IO.Path.GetTempPath( );

// Create the DataAdapter.
OleDbDataAdapter da = new OleDbDataAdapter(sqlText, connectionString);

// Create and fill the table.
DataTable dt = new DataTable("Inbox");
try
{
da.Fill(dt);
dataGrid.DataSource = dt.DefaultView;
}
catch(Exception ex)
{
MessageBox.Show("ERROR: " + ex.Message);

return;
}
}
Discussion
The .NET data provider for OLE DB does not support OLE DB Version 2.5 interfaces
including the Microsoft OLE DB Provider for Exchange. The Jet OLE DB provider can
access an Outlook or Exchange store. An example of the connection string:
Microsoft.Jet.OLEDB.4.0;Outlook 9.0;MAPILEVEL=Personal Folders|;
PROFILE=Outlook;TABLETYPE=0;DATABASE=c:\temp;
The connection string attributes-and-value pairs are described in Table 1-1
.
Table 1-1. Outlook or Exchange connection string attributes
Element Description
Database
name
DATABASE=path
With an Identifier of Outlook 9.0, the path to store temporary system tables.
With an Identifier of Exchange 4.0, the path and filename to a Microsoft
Access database in which to store temporary system tables.
Identifier
Outlook 9.0 to connect to Outlook 2000 and later.
Exchange 4.0 to connect to Exchange 4.x and 5.x.
Password
PASSWORD=password
Outlook or Exchange password. This parameter is not required if your
network logon password is passed to the Outlook or Exchange server. This
parameter is optional.
Profile
name
PROFILE=profile

The name of the Outlook or Exchange profile to use. If this not specified,
the default profile is used.
Table
path
MAPILEVEL=<storage>|<folderPath>
<storage> is the exact mailbox name on the server, a personal folder, or
public folder as it appears in the Outlook Folder list.
<folderPath> is the path to the folder immediately above the folder to access
using the SQL statement. The folder path is required only when accessing
folders below the top level of folders within the store; the pipe (|) character
is always required. When listing nested folders, separate each folder name
with a backslash (\).
Table
type
TABLETYPE=0 for folders (default value).
TABLETYPE=1 for address books.

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