C # Development COM components

1, define the interface

(1) Add [Guid ("1ea4dbf0-3c3b-11cf-810c-00aa00389b71") above the interface]

(2) Add [DispId (i)] to each method

Using System;
Using System.Runtime.InteropServices;
Namespace Leading.Mis.NewsMonitor
...... {
/**//**//**////<summary>
Definition of the Message monitoring interface
</summary>
[Guid ("1ea4dbf0-3c3b-11cf-810c-00aa00389b71")]
public interface Inewsmonitor
...... {
When sending a file, record the sender, the receiver, and the file name sent when sending the file, record sender, receiver and sent filename #region when sending the file, record sender, receiver and sent filename
/**//**//**////<summary>
When sending a file, record the sender, receiver and the file name sent
</summary>
<param name= "strsendid" > File sender </param>
<param name= "Strtargetid" > File recipient </param>
<param name= "strFileName" > FileName </param>
[DispId (1)]
void SendFile (String strsendid,string strtargetid,string strFileName);
#endregion

When receiving files, the record file recipient, sender and sent file name when receiving file, record file receiver, sender and send filename #region when receiving file, record file receiver, sender and send filename
/**//**//**////<summary>
Document recipient, sender, and sent file name when accepting files
</summary>
<param name= "Strreceiveid" > File recipient </param>
<param name= "strsendid" > File sender </param>
<param name= "strFileName" > FileName </param>
[DispId (2)]
void Recvfile (String strreceiveid,string strsendid,string strFileName);
#endregion

After the file is sent successfully, the record sender, receiver and sent file name file are sent successfully after the record sender, receiver and send the filename #region file sent successfully, record sender, receiver and send filename
/**//**//**////<summary>
After the file is sent, record the sender, the receiver, and the file name sent
</summary>
<param name= "strsendid" > File sender </param>
<param name= "Strtargetid" > File recipient </param>
<param name= "strFileName" > FileName </param>
[DispId (3)]
void Filesendok (String strsendid,string strtargetid,string strFileName);
#endregion

Cancel file when sending, record sender, receiver and send filename cancel file send, record sender, receiver and send filename #region cancel file send, record sender, receiver and send filename
/**//**//**////<summary>
When a file is sent, record the sender, the receiver, and the file name sent
</summary>
<param name= "Strcancelid" > Cancel file Sender </param>
<param name= "Strtargetid" > file sent to each other </param>
<param name= "strFileName" > FileName </param>
[DispId (4)]
void Filesendcancel (String strcancelid,string strtargetid,string strFileName);
#endregion

}//End Interface Inewsmonitor

}//end namespace Leading.Mis.NewsMonitor

2, the implementation of the class

(1) Add a [Guid ("1ea4dbf0-3c3b-11cf-810c-00aa00389b71")] above the class
[ClassInterface (ClassInterfaceType.None)]

Using System;
Using System.IO;
Using System.Runtime.InteropServices;

Namespace Leading.Mis.NewsMonitor
...... {
/**//**//**////<summary>
Implementation of message monitoring class
</summary>
[Guid ("1ea4dbf0-3c3b-11cf-810c-00aa00389b71")]
[ClassInterface (ClassInterfaceType.None)]
public class Newsmonitor:inewsmonitor
...... {
Private Field #region Private field

private string FilePath = String. Empty;
private string writeLine = String. Empty;

#endregion

Private Method #region Private method

private void Newsmsg ()
...... {
StreamWriter sw = null;
if (file.exists (FilePath))
...... {
SW = File.appendtext (FilePath);
}
Else
...... {
FileStream fs = File.create (FilePath);
SW = new StreamWriter (FS);
}
Sw. WriteLine (WriteLine);
Sw. Close ();
}

#endregion

Common method #region Common method

When sending a file, record the sender, the receiver, and the file name sent #region send the file, record the sender, receiver, and send the filename
/**////<summary>
When sending a file, record the sender, receiver and the file name sent
</summary>
<param name= "strsendid" > File sender </param>
<param name= "Strtargetid" > File recipient </param>
<param name= "strFileName" > FileName </param>
public void SendFile (string strsendid,string strtargetid,string strFileName)
...... {
FilePath = @ "C:msgmonitorsendfile.txt";
WriteLine = Strsendid + "to" + Strtargetid + "Send <" + strFileName + "> file";
Newsmsg ();
}
#endregion

When a file is received, the record file recipient, the sender, and the file name sent #region receive the file, the record file recipient, the sender, and the file name sent
/**////<summary>
Document recipient, sender, and sent file name when accepting files
</summary>
<param name= "Strreceiveid" > File recipient </param>
<param name= "strsendid" > File sender </param>
<param name= "strFileName" > FileName </param>
public void Recvfile (string strreceiveid,string strsendid,string strFileName)
...... {
FilePath = @ "C:msgmonitorrecvfile.txt";
WriteLine = Strreceiveid + "received" + Strsendid + "sent <" + strFileName + "> file";
Newsmsg ();
}
#endregion

After the file is sent successfully, the record sender, receiver and sent file name #region files are sent successfully after the record sender, receiver and sent file name
/**////<summary>
After the file is sent, record the sender, the receiver, and the file name sent
</summary>
<param name= "strsendid" > File sender </param>
<param name= "Strtargetid" > File recipient </param>
<param name= "strFileName" > FileName </param>
public void Filesendok (string strsendid,string strtargetid,string strFileName)
...... {
FilePath = @ "C:msgmonitorfilesendok.txt";
WriteLine = Strsendid + "has succeeded to" + Strtargetid + "Send <" + strFileName + "> file";
Newsmsg ();
}
#endregion

When file is sent, record sender, receiver and sent filename #region Cancel file send, record sender, receiver and send filename
/**////<summary>
When a file is sent, record the sender, the receiver, and the file name sent
</summary>
<param name= "Strcancelid" > Cancel file Sender </param>
<param name= "Strtargetid" > file sent to each other </param>
<param name= "strFileName" > FileName </param>
public void Filesendcancel (string strcancelid,string strtargetid,string strFileName)
...... {
FilePath = @ "C:msgmonitorfilesendcancel.txt";
WriteLine = Strcancelid + "Cancel and" + Strtargetid + "Send <" + strFileName + "> file";
Newsmsg ();
}
#endregion

#endregion
}//End Class Newsmonitor

}//end namespace Leading.Mis.NewsMonitor

3, register with the Regasm tool

Regasm newsmsg.dll/tlb:newsmsg.tlb