C# 程序在串口读取时冻结打开新窗体
C# Program gets frozen opening a new form while serial port is reading
我正在开发一个从串行端口接收数据的接口,一旦它获得特定值,它就会显示另一种形式,但是当显示这种形式时,window 冻结你能帮我找到一个解决方案?
public string[] data=new string[14];
public SerialPort port = new SerialPort("COM17",2400, Parity.None,8,StopBits.One);
private Queue recievedData = new Queue();
public MainForm()
{
InitializeComponent();
port.Open();
port.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);
int count = port.BytesToRead;
byte[] ByteArray = new byte[count];
}
public void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
byte[] data = new byte[port.BytesToRead];
port.Read(data, 0, data.Length);
data.ToList().ForEach(b => recievedData.Enqueue(b));
processData();
}
public void processData()
{
byte[] byteArray = new byte[14];
if (recievedData.Count > 13)
{
for (int i = 0; i < byteArray.Length; i++)
{
byteArray[i] = recievedData.Dequeue();
}
}
for (int i = 0; i < 14; i++)
{
data[i] = byteArray[i].ToString();
}
int value0 = Convert.ToInt16(data[0]);
BitArray b0 = new BitArray(new int[] { value0 });
bool[] bits0 = new bool[b0.Count];
b0.CopyTo(bits0, 0);
int value1 = Convert.ToInt16(data[1]);
BitArray b1 = new BitArray(new int[] { value1 });
bool[] bits1 = new bool[b1.Count];
b1.CopyTo(bits1, 0);
int value2 = Convert.ToInt16(data[2]);
BitArray b2 = new BitArray(new int[] { value2 });
bool[] bits2 = new bool[b2.Count];
b2.CopyTo(bits2, 0);
int value3 = Convert.ToInt16(data[3]);
BitArray b3 = new BitArray(new int[] { value3 });
bool[] bits3 = new bool[b3.Count];
b3.CopyTo(bits3, 0);
int value4 = Convert.ToInt16(data[4]);
BitArray b4 = new BitArray(new int[] { value4 });
bool[] bits4 = new bool[b4.Count];
b4.CopyTo(bits4, 0);
int value5 = Convert.ToInt16(data[5]);
BitArray b5 = new BitArray(new int[] {value5});
bool[] bits5 = new bool[b5.Count];
b5.CopyTo(bits5, 0);
int value6 = Convert.ToInt16(data[6]);
BitArray b6 = new BitArray(new int[] { value6 });
bool[] bits6 = new bool[b6.Count];
b6.CopyTo(bits6, 0);
int value7 = Convert.ToInt16(data[7]);
BitArray b7 = new BitArray(new int[] { value7 });
bool[] bits7 = new bool[b7.Count];
b7.CopyTo(bits7, 0);
int value8 = Convert.ToInt16(data[8]);
BitArray b8 = new BitArray(new int[] { value8 });
bool[] bits8 = new bool[b8.Count];
b8.CopyTo(bits8, 0);
int value9 = Convert.ToInt16(data[9]);
BitArray b9 = new BitArray(new int[] { value9});
bool[] bits9 = new bool[b9.Count];
b9.CopyTo(bits9, 0);
int value10 = Convert.ToInt16(data[10]);
BitArray b10 = new BitArray(new int[] { value10 });
bool[] bits10 = new bool[b10.Count];
b10.CopyTo(bits10, 0);
int value11 = Convert.ToInt16(data[11]);
BitArray b11 = new BitArray(new int[] { value11 });
bool[] bits11 = new bool[b11.Count];
b11.CopyTo(bits11, 0);
int value12 = Convert.ToInt16(data[12]);
BitArray b12 = new BitArray(new int[] { value12 });
bool[] bits12 = new bool[b12.Count];
b12.CopyTo(bits12, 0);
int value13 = Convert.ToInt16(data[13]);
BitArray b13 = new BitArray(new int[] { value13 });
bool[] bits13 = new bool[b13.Count];
b13.CopyTo(bits13, 0);
if (bits13[2]&&reentrant==0)
{
reentrant = 1;
Form1 formita = new Form1(this);
formita.Show();
}
string direction = "";
if (bits1[3]==true)
{
direction = "-";
}
string firstdigital = bittobcd(bits1[2], bits1[1], bits1[0], bits2[3], bits2[2], bits2[1], bits2[0]);
string seconddigital = bittobcd(bits3[2], bits3[1], bits3[0], bits4[3], bits4[2], bits4[1], bits4[0]);
string thirddigital = bittobcd(bits5[2], bits5[1], bits5[0], bits6[3], bits6[2], bits6[1], bits6[0]);
string fourthdigital = bittobcd(bits7[2], bits7[1], bits7[0], bits8[3], bits8[2], bits8[1], bits8[0]);
Writing(direction+firstdigital+seconddigital+thirddigital+fourthdigital);
}
string bittobcd(bool a, bool b, bool c, bool d, bool e, bool f, bool g)
{
string number="";
if (a == false && b == false && c == false && d == false && e == true && f == false && g == true)
{
number = "1";
}
else if(a == true && b == false && c == true && d == true && e == false && f == true && g == true)
{
number = "2";
}
else if(a == false && b == false && c == true && d == true && e == true && f == true && g == true)
{
number = "3";
}
else if(a == false && b == true && c == false && d == false && e == true && f == true && g == true)
{
number = "4";
}
else if(a == false && b == true && c == true && d == true && e == true && f == true && g == false)
{
number = "5";
}
else if(a == true && b == true && c == true && d ==true && e == true && f == true && g == false)
{
number = "6";
}
else if(a == false && b == false && c == true && d == false && e == true && f == false && g == true)
{
number = "7";
}
else if(a == true && b == true && c == true && d == true && e == true && f == true && g == true)
{
number = "8";
}
else if(a == false && b == true && c == true && d == true && e == true && f == true && g == true)
{
number = "9";
}
else if(a == true && b == true && c == true && d == true && e == true && f == false && g == true)
{
number = "0";
}
else if(a == true && b == true && c == false && d == true && e == false && f == false && g == false)
{
number = "L";
}
else if(a == false && b == false && c == false && d == false && e == false && f == false && g == false)
{
number = " ";
}
return number;
}
public void Writing(string text)
{
if (textBox2.InvokeRequired)
{
Action safeWrite = delegate { Writing($"{text}"); };
textBox2.Invoke(safeWrite);
}
else
textBox2.Text = text;
}
}
public MainForm mainy2;
public Form1(主窗体)
{
初始化组件();
主要 2 = 主要;
}
private void Form1_Load(object sender, EventArgs e)
{
this.Invoke((MethodInvoker)delegate
{
mainy2.Hide();
});
}
正如 Ralf 提到的,serialPort1_DataReceived
很可能会在后台线程上引发。但是你打电话给
Form1 formita = new Form1(this);
formita.Show();
虽然这不是严格禁止的,但这很可能不是一个好主意,因为您不会有多个表单与不同的 UI 线程相关联。
我假设冻结的原因是阻塞调用。它也可能导致各种同步问题:
if (textBox2.InvokeRequired)
{
Action safeWrite = delegate { Writing($"{text}"); };
textBox2.Invoke(safeWrite);
}
意味着后台线程将阻塞,直到 UI 线程完成更新。而且可能还会有一堆其他的同步问题。
我建议只从 UI 线程访问任何 UI 类。我认为这至少应该有所帮助。 IE。将上面的代码更改为
textBox2.BeginInvoke(() => {
Form1 formita = new Form1(this);
formita.Show();
});
我正在开发一个从串行端口接收数据的接口,一旦它获得特定值,它就会显示另一种形式,但是当显示这种形式时,window 冻结你能帮我找到一个解决方案?
public string[] data=new string[14]; public SerialPort port = new SerialPort("COM17",2400, Parity.None,8,StopBits.One); private Queue recievedData = new Queue();
public MainForm()
{
InitializeComponent();
port.Open();
port.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);
int count = port.BytesToRead;
byte[] ByteArray = new byte[count];
}
public void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
byte[] data = new byte[port.BytesToRead];
port.Read(data, 0, data.Length);
data.ToList().ForEach(b => recievedData.Enqueue(b));
processData();
}
public void processData()
{
byte[] byteArray = new byte[14];
if (recievedData.Count > 13)
{
for (int i = 0; i < byteArray.Length; i++)
{
byteArray[i] = recievedData.Dequeue();
}
}
for (int i = 0; i < 14; i++)
{
data[i] = byteArray[i].ToString();
}
int value0 = Convert.ToInt16(data[0]);
BitArray b0 = new BitArray(new int[] { value0 });
bool[] bits0 = new bool[b0.Count];
b0.CopyTo(bits0, 0);
int value1 = Convert.ToInt16(data[1]);
BitArray b1 = new BitArray(new int[] { value1 });
bool[] bits1 = new bool[b1.Count];
b1.CopyTo(bits1, 0);
int value2 = Convert.ToInt16(data[2]);
BitArray b2 = new BitArray(new int[] { value2 });
bool[] bits2 = new bool[b2.Count];
b2.CopyTo(bits2, 0);
int value3 = Convert.ToInt16(data[3]);
BitArray b3 = new BitArray(new int[] { value3 });
bool[] bits3 = new bool[b3.Count];
b3.CopyTo(bits3, 0);
int value4 = Convert.ToInt16(data[4]);
BitArray b4 = new BitArray(new int[] { value4 });
bool[] bits4 = new bool[b4.Count];
b4.CopyTo(bits4, 0);
int value5 = Convert.ToInt16(data[5]);
BitArray b5 = new BitArray(new int[] {value5});
bool[] bits5 = new bool[b5.Count];
b5.CopyTo(bits5, 0);
int value6 = Convert.ToInt16(data[6]);
BitArray b6 = new BitArray(new int[] { value6 });
bool[] bits6 = new bool[b6.Count];
b6.CopyTo(bits6, 0);
int value7 = Convert.ToInt16(data[7]);
BitArray b7 = new BitArray(new int[] { value7 });
bool[] bits7 = new bool[b7.Count];
b7.CopyTo(bits7, 0);
int value8 = Convert.ToInt16(data[8]);
BitArray b8 = new BitArray(new int[] { value8 });
bool[] bits8 = new bool[b8.Count];
b8.CopyTo(bits8, 0);
int value9 = Convert.ToInt16(data[9]);
BitArray b9 = new BitArray(new int[] { value9});
bool[] bits9 = new bool[b9.Count];
b9.CopyTo(bits9, 0);
int value10 = Convert.ToInt16(data[10]);
BitArray b10 = new BitArray(new int[] { value10 });
bool[] bits10 = new bool[b10.Count];
b10.CopyTo(bits10, 0);
int value11 = Convert.ToInt16(data[11]);
BitArray b11 = new BitArray(new int[] { value11 });
bool[] bits11 = new bool[b11.Count];
b11.CopyTo(bits11, 0);
int value12 = Convert.ToInt16(data[12]);
BitArray b12 = new BitArray(new int[] { value12 });
bool[] bits12 = new bool[b12.Count];
b12.CopyTo(bits12, 0);
int value13 = Convert.ToInt16(data[13]);
BitArray b13 = new BitArray(new int[] { value13 });
bool[] bits13 = new bool[b13.Count];
b13.CopyTo(bits13, 0);
if (bits13[2]&&reentrant==0)
{
reentrant = 1;
Form1 formita = new Form1(this);
formita.Show();
}
string direction = "";
if (bits1[3]==true)
{
direction = "-";
}
string firstdigital = bittobcd(bits1[2], bits1[1], bits1[0], bits2[3], bits2[2], bits2[1], bits2[0]);
string seconddigital = bittobcd(bits3[2], bits3[1], bits3[0], bits4[3], bits4[2], bits4[1], bits4[0]);
string thirddigital = bittobcd(bits5[2], bits5[1], bits5[0], bits6[3], bits6[2], bits6[1], bits6[0]);
string fourthdigital = bittobcd(bits7[2], bits7[1], bits7[0], bits8[3], bits8[2], bits8[1], bits8[0]);
Writing(direction+firstdigital+seconddigital+thirddigital+fourthdigital);
}
string bittobcd(bool a, bool b, bool c, bool d, bool e, bool f, bool g)
{
string number="";
if (a == false && b == false && c == false && d == false && e == true && f == false && g == true)
{
number = "1";
}
else if(a == true && b == false && c == true && d == true && e == false && f == true && g == true)
{
number = "2";
}
else if(a == false && b == false && c == true && d == true && e == true && f == true && g == true)
{
number = "3";
}
else if(a == false && b == true && c == false && d == false && e == true && f == true && g == true)
{
number = "4";
}
else if(a == false && b == true && c == true && d == true && e == true && f == true && g == false)
{
number = "5";
}
else if(a == true && b == true && c == true && d ==true && e == true && f == true && g == false)
{
number = "6";
}
else if(a == false && b == false && c == true && d == false && e == true && f == false && g == true)
{
number = "7";
}
else if(a == true && b == true && c == true && d == true && e == true && f == true && g == true)
{
number = "8";
}
else if(a == false && b == true && c == true && d == true && e == true && f == true && g == true)
{
number = "9";
}
else if(a == true && b == true && c == true && d == true && e == true && f == false && g == true)
{
number = "0";
}
else if(a == true && b == true && c == false && d == true && e == false && f == false && g == false)
{
number = "L";
}
else if(a == false && b == false && c == false && d == false && e == false && f == false && g == false)
{
number = " ";
}
return number;
}
public void Writing(string text)
{
if (textBox2.InvokeRequired)
{
Action safeWrite = delegate { Writing($"{text}"); };
textBox2.Invoke(safeWrite);
}
else
textBox2.Text = text;
}
}
public MainForm mainy2; public Form1(主窗体) { 初始化组件(); 主要 2 = 主要; }
private void Form1_Load(object sender, EventArgs e)
{
this.Invoke((MethodInvoker)delegate
{
mainy2.Hide();
});
}
正如 Ralf 提到的,serialPort1_DataReceived
很可能会在后台线程上引发。但是你打电话给
Form1 formita = new Form1(this);
formita.Show();
虽然这不是严格禁止的,但这很可能不是一个好主意,因为您不会有多个表单与不同的 UI 线程相关联。
我假设冻结的原因是阻塞调用。它也可能导致各种同步问题:
if (textBox2.InvokeRequired)
{
Action safeWrite = delegate { Writing($"{text}"); };
textBox2.Invoke(safeWrite);
}
意味着后台线程将阻塞,直到 UI 线程完成更新。而且可能还会有一堆其他的同步问题。
我建议只从 UI 线程访问任何 UI 类。我认为这至少应该有所帮助。 IE。将上面的代码更改为
textBox2.BeginInvoke(() => {
Form1 formita = new Form1(this);
formita.Show();
});