我正在處理一個從串行埠接收資料的介面，一旦它獲得特定值，它就會顯示另一種形式，但是當顯示時視窗會凍結你能幫我找到解決方案嗎？
公共字串[] 資料=新字串[14]；public SerialPort port = new SerialPort("COM17",2400, Parity.None,8,StopBits.One); 私有佇列接收資料 = 新佇列（）；
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($"{text}"); };
textBox2.Invoke(safeWrite);
}
else
textBox2.Text = text;
}
}
public MainForm mainy2; public Form1(MainForm mainy) { InitializeComponent(); mainy2 = 主要；}
private void Form1_Load(object sender, EventArgs e)
{
this.Invoke((MethodInvoker)delegate
{
mainy2.Hide();
});
}
uj5u.com熱心網友回復：
正如拉爾夫所提到的，serialPort1_DataReceived很可能會在后臺執行緒中提出。但后來你打電話
Form1 formita = new Form1(this);
formita.Show();
雖然這不是嚴格禁止的，但這很可能不是一個好主意，因為您不會有多個表單與不同的 UI 執行緒相關聯。
我認為凍結的原因是阻塞呼叫。它也可能導致各種同步問題：
if (textBox2.InvokeRequired)
{
Action safeWrite = delegate { Writing($"{text}"); };
textBox2.Invoke(safeWrite);
}
這意味著后臺執行緒將阻塞，直到 UI 執行緒完成其更新。并且可能會有一堆其他同步問題。
我建議只從 UI 執行緒訪問任何 UI 類。我認為這至少應該有所幫助。即把上面的代碼改成
textBox2.BeginInvoke(() => {
Form1 formita = new Form1(this);
formita.Show();
});
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