通过ADO删除Exchange 中邮件的办法

1.启动 Microsoft Visual Studio.net,新建一个项目

2.添加COM 引用Microsoft ActiveX Data Object 2.5 Libary

3:示例

try 
            {
                ADODB.Connection oCn = new ADODB.Connection();
                ADODB.Recordset oRs = new ADODB.Recordset();

                ADODB.Fields oFields;
                ADODB.Field oField;

                // TODO: Replace the folder URL with your folder URL.
                string sFdUrl = "http://ExchServer/exchange/UserAlias/Inbox";
            
                oCn.Provider = "exoledb.datasource";
                oCn.Open(sFdUrl, "", "", -1);  


                string strSql;
                strSql = "";
                strSql = "select ";
                strSql = strSql + " \"urn:schemas:mailheader:content-class\"";
                strSql = strSql + ", \"DAV:href\" ";
                strSql = strSql + ", \"DAV:displayname\"";
                strSql = strSql + " from scope ('shallow traversal of " + "\"";
                strSql = strSql + sFdUrl + "\"') ";
                strSql = strSql + " WHERE \"DAV:ishidden\" = false";
                strSql = strSql + " AND \"DAV:isfolder\" = false";
                //TODO: Replace 'Test.eml' with the name of the mail that you want to delete.
                strSql = strSql + " AND \"DAV:displayname\" = 'Test.eml'";  


                oRs.Open(strSql, oCn,
                    ADODB.CursorTypeEnum.adOpenUnspecified,
                    ADODB.LockTypeEnum.adLockOptimistic,
                    1);

                Console.WriteLine(oRs.RecordCount);    
   
                oRs.MoveFirst();
                while(!oRs.EOF)
                {
            
                    oFields = oRs.Fields;

                    oField = oFields["DAV:href"];
                    Console.WriteLine(oField.Value);

                    oField = oFields["DAV:displayname"];
                    Console.WriteLine(oField.Value);
                    oRs.Delete(ADODB.AffectEnum.adAffectCurrent);

                    oRs.MoveNext();  
                    Console.WriteLine("Item Deleted");
                    Console.WriteLine("--------------------------");

                }

                oCn.Close();

                oCn = null;
                oField = null;
                oFields = null;
            }
            catch (Exception e)
            {
                Console.WriteLine("{0} Exception caught.", e);
            }