Question

C# project里 代码都没有F5的时候 就会出错误 怎么解决 代码如下

String xMode = "A";
if (radioButton7.Checked) { xMode = "A"; } //Auto
if (radioButton3.Checked) { xMode = "I"; } //Roll left
if (radioButton4.Checked) { xMode = "J"; } //Roll right
if (radioButton5.Checked) { xMode = "B"; } //Flash
if (radioButton6.Checked) { xMode = "C"; } //Hold
String xSpeed = "1"; String xPause = "3";

String A1 = "\u0000\u0000\u0000\u0000\u0000\u0001FF00";
string B2 = "\u0002" + "A" + "0" + xMode + xSpeed + xPause + "7F";
string G7 = "01001200";
string G7a = "000" + "1";
string H8 = textBox2.Text + "\u0003" + "0564" + "\u0004";
string Display = A1 + B2 + G7 + G7a + H8;
try
{
networkStream = socketForServer.GetStream();
}
catch (SystemException se)
{
MessageBox.Show(se.ToString());
}
byte[] outStream = System.Text.Encoding.ASCII.GetBytes(Display);
networkStream.Write(outStream, 0, outStream.Length);
networkStream.Flush();

byte[] inStream = new byte[10025];
networkStream.Read(inStream, 0, (int)socketForServer.ReceiveBufferSize);
string returndata = System.Text.Encoding.ASCII.GetString(inStream);

textBox3.Text = textBox3.Text + Environment.NewLine + " >> " + "Data from Server : " + returndata;

}

Answer 1

这段代码如果 Socket 不存在问题，那么极可能存在问题的代码是：
byte[] inStream = new byte[10025];
networkStream.Read(inStream, 0, (int)socketForServer.ReceiveBufferSize);

你能确保 ReceiveBufferSize 小于或等于 10025 字节码（ReceiveBufferSize 默认 8192 字节），建议更改为：
byte[] inStream = new byte[10025];
int len = networkStream.Read(inStream, 0, inStream.Length);

// 通过返回值 len 判断是否已经读取完毕（返回零意味读取完毕，否则非零）。

以下代码更加简洁，提供参考：
// 向网络流写入字符串数据
System.IO.StreamWriter writer = new System.IO.StreamWriter(networkStream, System.Text.Encoding.ASCII);
writer.Write(Display);

// 从网络流中读取字符串数据
System.IO.StreamReader reader = new System.IO.StreamReader(networkStream, System.Text.Encoding.ASCII);
string returndata = reader.ReadToEnd();

Answer 2

发错误提示

追问

byte[] outStream = System.Text.Encoding.ASCII.GetBytes(Display);
networkStream.Write(outStream, 0, outStream.Length);
networkStream.Flush();

byte[] inStream = new byte[10025];
networkStream.Read(inStream, 0, (int)socketForServer.ReceiveBufferSize);
string returndata = System.Text.Encoding.ASCII.GetString(inStream);
提示错在这边

Answer 3

提示的错误是什么？