검색결과 리스트
C#에 해당되는 글 78건
- 2009.01.09 [C#]Effective C# 인터넷이 되는데만 -_- 됩네다
- 2009.01.09 [C#]DoubleBuffered -_-a
- 2009.01.06 [C#]트레이 아이콘 버그.(OS 종료시)
- 2008.12.26 [C#]API 사이트
- 2008.12.26 [C#]TCP/IP + SQL -_-a
- 2008.10.05 [C#]MSI 자동배포 생성
- 2008.09.30 [C#]다운로드 Method
- 2008.09.29 [C#]윈도우 영역 크기 얻어오기
- 2008.09.29 [C#]Parse와 Convert의 차이점
- 2008.09.18 [C#]파일 감시
글
http://www.synch3d.com/wiki/moin/moin.cgi/Effective_20C_23
찬찬~ 히 보면 많은 도움이 된다지요~
-_-/ 꼭 인터넷이 되는데만 보세요 ㅎㅎ
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-_-a 이를 쓰는 방법은..
this.DoubleBuffered=true;
요렇게~ 해 주면 된다.
근데 한가지 문제!! -_- 부하가 많이 갈 경우?
-_-... 짤 없이 직접 처리해야한답 -_-
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3.0에서도 실제 해 본 것은 아니지만 여기에 대한 문제점 해결을 찾다보니
몇몇 방법이 있다는 것을 알았다.
1. Flag 변수 - 시스템 종료인지 단순한 창의 종료인지 구분
2. WndProc()함수 overriding
3. Form_Closing()함수 수정
이벤트 순서 : WM_QUERYENDSESSION - Form Close - WM_ENDSESSION
public static bool bEndSession = false;
/*logoff, shutdown, restart, poweroff */
protected override void WndProc(ref Message m)
{
const int WM_QUERYENDSESSION = 0x0011;
const int WM_ENDSESSION = 0x16;
const int WM_SYSCOMMAND = 0x112;
const int WM_CLOSE = 0x0010;
const int SC_CLOSE = 0xF060;
switch (m.Msg){
case WM_QUERYENDSESSION:
Console.WriteLine("WM_QUERYENDSESSION");
bEndSession = true;
break;
case WM_ENDSESSION:
Console.WriteLine("WM_ENDSESSION");
break;
case WM_SYSCOMMAND:
if (m.WParam.ToInt32() == SC_CLOSE)
{
Console.WriteLine("SC_CLOSE");
}
break;
case WM_CLOSE:
Console.WriteLine("WM_CLOSE");
break;
}
base.WndProc (ref m);
}
private void MainForm1_Closing(object sender, System.ComponentModel.CancelEventArgs e){
if (!bEndSession){
e.Cancel = true;
this.WindowState = FormWindowState.Minimized;
this.Hide();
}
else{
//WndProc()에서 처리하도록 함.
}
}
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흠냐.. -_- 그냥 간단한 형식으로 만들었다
테스팅만 되게..
근데 -_- 근데!! 왜!!
-_- WrteLine만 해서 보낼 경우는 데이터가 왜 안가지 -_-;;
Flush()는 스트림을 비우는게 아닌감 -_-
난 그렇게 알고 있었는데...
뭐 암튼지간 -_- 여기 저기 기웃거림 뭔가 알겠지 -_-;;
******TCP/IP + DataBase Server Code 1:1
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.IO;
using System.Data.SqlClient;
namespace server
{
public partial class Form1 : Form
{
TcpListener server;
TcpClient client;
NetworkStream Stream = null;
StreamReader reader;
StreamWriter writer;
Thread reciive;
bool connect;
private delegate void MBox();
public Form1()
{
InitializeComponent();
}
private void Check()
{
try
{
client = server.AcceptTcpClient();
connect = true;
Stream = client.GetStream();
reader = new StreamReader(Stream);
writer = new StreamWriter(Stream);
reciive = new Thread(new ThreadStart(Recieve));
reciive.Start();
}
catch (Exception ex) { }
}
private void Recieve()
{
try
{
while (connect)
{
Thread.Sleep(1);
if (Stream.CanRead)
{
Thread.Sleep(1);
if (Stream.CanRead)
{
string temp = reader.ReadLine();
if (temp.Length > 0)
{
Search();
}
}
}
}
}
catch (Exception ex) { }
}
private void Search()
{
string tests = @"User Id=sa; Password=cjstkd; Server =192.168.1.209; Initial Catalog = test";
SqlConnection conn;
SqlCommand cmd;
SqlDataReader dr;
try
{
conn = new SqlConnection(tests);
conn.Open();
cmd = new SqlCommand("select id from ID_PW", conn);
cmd.CommandType = CommandType.Text;
dr = cmd.ExecuteReader();
while (dr.Read())
{
writer.WriteLine(dr.GetString(0));
writer.Flush();
}
dr.Close();
conn.Close();
}
catch (Exception ex) { }
}
private void Form1_Load(object sender, EventArgs e)
{
Thread checkThread = new Thread(new ThreadStart(Check));
checkThread.Start();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
connect = false;
if (reader != null)
reader.Close();
if (writer != null)
writer.Close();
if (server != null)
server.Stop();
if (client != null)
client.Close();
if (reciive != null)
reciive.Abort();
}
private void button2_Click(object sender, EventArgs e)
{
IPAddress addr = new IPAddress(0);
int port = 5425;
server = new TcpListener(addr, port);
server.Start();
Check();
button2.Text="Start";
}
}
}
*****TCP/IP Client
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.IO;
using System.Threading;
namespace client
{
public partial class Form1 : Form
{
TcpClient client;
StreamReader reader;
StreamWriter writer;
NetworkStream Stream;
Thread receive;
bool connect;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
try{
client = new TcpClient();
client.Connect("192.168.1.209",5425);
Stream = client.GetStream();
connect = true;
reader = new StreamReader(Stream);
writer = new StreamWriter(Stream);
receive = new Thread(new ThreadStart(Recieve));
receive.Start();
}
catch(Exception ex){}
}
private void Recieve(){
try{
while(connect)
{
Thread.Sleep(1);
if (Stream.CanRead)
{
string temp = reader.ReadLine();
if (temp.Length > 0)
MessageBox.Show(temp);
}
}
}
catch(Exception e){}
}
private void button2_Click(object sender, EventArgs e)
{
writer.WriteLine("search");
writer.Flush();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
connect = false;
if (reader != null)
reader.Close();
if (writer != null)
writer.Close();
if (client != null)
client.Close();
if (receive != null)
receive.Abort();
}
}
}
*********************************************************************************
1:다 Server
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.IO;
using System.Data.SqlClient;
namespace server
{
public partial class Form1 : Form
{
TcpListener server;
TcpClient client = null;
NetworkStream Stream = null;
StreamReader reader = null;
StreamWriter writer = null;
Thread reciive=null;
Thread checkThread = null;
bool connect=false;
public Form1()
{
InitializeComponent();
}
private void Check()
{
string temp=null;
try
{
while (true)
{
temp = null;
client = server.AcceptTcpClient();
connect = true;
Stream = client.GetStream();
reader = new StreamReader(Stream);
writer = new StreamWriter(Stream);
temp = reader.ReadLine();
if (temp.Equals("search"))
{
Search();
}
else if (temp.Equals("search1"))
{
Search1();
}
temp = null;
}
}
catch (Exception ex) { }
}
private void Recieve()
{
try
{
while (connect)
{
Thread.Sleep(1);
if (Stream.CanRead)
{
Thread.Sleep(1);
if (Stream.CanRead)
{
string temp = reader.ReadLine();
if (temp.Length > 0)
{
if (temp.Equals("search"))
{
MessageBox.Show(temp);
Search();
temp = null;
}
else if (temp.Equals("search1"))
{
MessageBox.Show(temp);
Search1();
temp = null;
}
}
}
}
}
}
catch (Exception ex) { }
}
private void Search()
{
string tests = @"User Id=sa; Password=cjstkd; Server =192.168.1.209; Initial Catalog = test";
SqlConnection conn;
SqlCommand cmd;
SqlDataReader dr;
try
{
conn = new SqlConnection(tests);
conn.Open();
cmd = new SqlCommand("select id from ID_PW", conn);
cmd.CommandType = CommandType.Text;
dr = cmd.ExecuteReader();
while (dr.Read())
{
writer.WriteLine(dr.GetString(0));
writer.Flush();
}
dr.Close();
conn.Close();
}
catch (Exception ex) { }
}
private void Search1()
{
string tests = @"User Id=sa; Password=cjstkd; Server =192.168.1.209; Initial Catalog = test";
SqlConnection conn;
SqlCommand cmd;
SqlDataReader dr;
try
{
conn = new SqlConnection(tests);
conn.Open();
cmd = new SqlCommand("select pw from ID_PW", conn);
cmd.CommandType = CommandType.Text;
dr = cmd.ExecuteReader();
while (dr.Read())
{
writer.WriteLine(dr.GetString(0));
writer.Flush();
}
dr.Close();
conn.Close();
}
catch (Exception ex) { }
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
connect = false;
if (reader != null)
reader.Close();
if (writer != null)
writer.Close();
if (server != null)
server.Stop();
if (client != null)
client.Close();
if (reciive != null)
reciive.Abort();
}
private void button2_Click(object sender, EventArgs e)
{
IPAddress addr = new IPAddress(0);
int port = 5425;
server = new TcpListener(addr, port);
server.Start();
checkThread = new Thread(new ThreadStart(Check));
checkThread.IsBackground = true;
checkThread.Start();
button2.Text="Start";
}
}
}
*********************************************************************************
1:다 Client
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.IO;
using System.Threading;
namespace client
{
public partial class Form1 : Form
{
TcpClient client;
StreamReader reader;
StreamWriter writer;
NetworkStream Stream;
Thread receive;
bool connect;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
try{
client = new TcpClient();
client.Connect("localhost",5425);
Stream = client.GetStream();
connect = true;
reader = new StreamReader(Stream);
writer = new StreamWriter(Stream);
receive = new Thread(new ThreadStart(Recieve));
receive.Start();
}
catch(Exception ex){}
}
private void Recieve(){
try{
while (connect)
{
Thread.Sleep(1);
if (Stream.CanRead)
{
string temp = reader.ReadLine();
if (temp.Length > 0)
MessageBox.Show(temp);
}
}
}
catch(Exception e){}
}
private void button2_Click(object sender, EventArgs e)
{
writer.WriteLine("search");
writer.Flush();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
connect = false;
if (reader != null)
reader.Close();
if (writer != null)
writer.Close();
if (client != null)
client.Close();
if (receive != null)
receive.Abort();
}
private void button3_Click(object sender, EventArgs e)
{
writer.WriteLine("search1");
writer.Flush();
}
}
}
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1) 프로젝트 작성
2) AP폴더 내에 파일 삽입
3) 빌드
자동배포 MSI와 Setup파일이 자동 생성된다
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public void Download(string downURL) {
System.Net.WebClient request = new System.Net.WebClient();
byte[] newFileData = request.DownloadData(downURL);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
Response.Write(fileString);
}
-_-a 웹 클라이언트를 통한.. 파일 데이터 다운로드라 해야하나.. -_-a
뭐 그런 취지로 만든 것이답.
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Size Bounds = Screen.PrimaryScreen.Bounds.Size;
MessageBox.Show(Bounds.ToString());
(결과) Width=2560, Height=1600
작업 표시줄 제외한 윈도우 영역 크기
Size WorkingArea = Screen.PrimaryScreen.WorkingArea.Size;
MessageBox.Show(WorkingArea.ToString());
(결과) Width=2560, Height=1570
※ 결과 : 2560*1600 해상도에서 테스트 한 결과
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큰 차이는 없다 null Exception 처리를 한다 안한다의 차이 뿐이다
Parse를 살펴보면 문자를 Integer로 바꿔준다.
그리고 null이 입력될경우 ArgumentNullException 처리를 해준다.
Convert.ToInt32경우는 입력값이 null일경우 0을 반환한다.
그리고 나머지는 int.Parse와 같다.
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C#에는 재미있는 클래스들이 많이 있다.
그 중 하나가 파일 시스템을 감시하는 FileSystemWatcher 클래스가 있다.
하지만 크로스 스레드 문제로 인한 오류가 발생하는데 필자는 다음과 같이 하여 이용하고 있다.
CheckForIllegalCrossThreadCalls = false;//크로스 스레드 자체를 무시.
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = txtPath.Text;
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
watcher.Filter = "*.*";
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.Created += new FileSystemEventHandler(OnChanged);
watcher.Deleted += new FileSystemEventHandler(OnChanged);
watcher.Renamed += new RenamedEventHandler(OnChanged);
여기에서 OnChanged는 메소드로 각 해당하는 상태가 일어났을 시 그 메소드를 실행한다.
watcher.EnableRaisingEvents = true;
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