C# 在'上出错;定时器';是';System.Windows.Forms.Timer';和';System.Threading.Timer';
我的错误显示:C# 在'上出错;定时器';是';System.Windows.Forms.Timer';和';System.Threading.Timer';,c#,C#,我的错误显示: 问题是你是 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.Threading; us
问题是你是
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.Threading;
using System.Security.Cryptography;
namespace SocketClient
{
public partial class SocketClient : Form
{
System.Net.Sockets.TcpClient clientSocket = new System.Net.Sockets.TcpClient();
NetworkStream serverStream = default(NetworkStream);
string readData = null;
public SocketClient()
{
InitializeComponent();
Timer timer = new Timer();
timer.Tick += new EventHandler(TimerOnTick);
timer.Interval = 1000;
timer.Start();
}
private void TimerOnTick(object sender, EventArgs ea)
{
Invalidate();
}
protected override void OnPaint(PaintEventArgs pea)
{
StringFormat strfmt = new StringFormat();
strfmt.Alignment = StringAlignment.Far;
strfmt.LineAlignment = StringAlignment.Far;
pea.Graphics.DrawString(DateTime.Now.ToString("F"),
Font, new SolidBrush(ForeColor),
ClientRectangle, strfmt);
}
private void getMessage()
{
while (true)
{
serverStream = clientSocket.GetStream();
int buffSize = 0;
byte[] inStream = new byte[10025];
buffSize = clientSocket.ReceiveBufferSize;
serverStream.Read(inStream, 0, buffSize);
string returndata = System.Text.Encoding.ASCII.GetString(inStream);
readData = "" + returndata;
msg();
}
}
private void msg()
{
if (this.InvokeRequired)
this.Invoke(new MethodInvoker(msg));
else
textDisplay.Text = textDisplay.Text + Environment.NewLine + " >> " + readData;
}
private void buttonConnect_Click(object sender, EventArgs e)
{
// show the message if no input is enter.
if (string.IsNullOrEmpty(textName.Text) || string.IsNullOrEmpty(textPort.Text) || string.IsNullOrEmpty(textIP.Text))
{
MessageBox.Show("Please enter Name, IP Address & Port #");
}
else
{
//connect to the server if all 3 input is enter
readData = "Conected to NYP Server ...";
msg();
clientSocket.Connect(textIP.Text, Convert.ToInt32(textPort.Text));
serverStream = clientSocket.GetStream();
byte[] outStream = System.Text.Encoding.ASCII.GetBytes(textName.Text + "$");
serverStream.Write(outStream, 0, outStream.Length);
serverStream.Flush();
Thread ctThread = new Thread(getMessage);
ctThread.Start();
}
}
private void buttonSend_Click(object sender, EventArgs e)
{
// Show msg box if no server is connected
if (serverStream == null)
{
MessageBox.Show("Please connect to a server first!");
return;
}
// Send text
byte[] outStream = System.Text.Encoding.ASCII.GetBytes(textSend.Text + "$");
serverStream.Write(outStream, 0, outStream.Length);
serverStream.Flush();
// Clear text
textSend.Text = "";
}
private void textDisplay_TextChanged(object sender, EventArgs e)
{
textDisplay.SelectionStart = textDisplay.Text.Length;
textDisplay.ScrollToCaret();
textDisplay.Refresh();
}
private void textSend_TextChanged(object sender, EventArgs e)
{
buttonSend.Enabled = !string.IsNullOrEmpty(textSend.Text);
}
}
}
这两个名称空间都有一个Timer
类,编译器无法判断使用哪个名称空间。声明计时器时,请使用全名,或者:
using System.Windows.Forms;
using System.Threading;
或
根据您对该类的使用情况,我认为您需要System.Windows.Forms.Timer
,如下所示:
System.Threading.Timer
这里有多种选择:
- 使用别名:
public SocketClient()
{
InitializeComponent();
var timer = new System.Windows.Forms.Timer();
timer.Tick += new EventHandler(TimerOnTick);
timer.Interval = 1000;
timer.Start();
}
- 使用完全限定名称:
using UITimer = System.Windows.Forms.Timer;
...
UITimer timer = new UITimer();
- 使用命名空间别名:
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
然而,我个人建议将用户界面代码从网络代码中分离出来——在这一点上,这不太可能成为一个问题
我还要指出,您当前正在读取流,而没有考虑返回值-这是个坏主意,因为您不知道缓冲区中实际包含了多少新数据。请注意,.NET Framework违反了.NET Framework设计准则之一:具有通用名称的类应为通用类。考虑<代码>字符串<代码> vs.代码> XmlTextReader < /代码>。code>Timer
是一个通用名称,其中一个或两个类都是专用的。
using UITimer = System.Windows.Forms.Timer;
...
UITimer timer = new UITimer();
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
using WinForms = System.Windows.Forms;
...
WinForms::Timer timer = new WinForms::Timer();