为什么这段代码会失去响应，我是C#菜鸟

CCC的 2012-09-07 05:01:08

private void button1_Click(object sender, EventArgs e)

{

string EPCNo;

int i = 0;

if (this.Text == "发卡程序--未找到发卡器")

{

readers = reader.GetReaderList();

if (readers.Count == 0)

{

MessageBox.Show("未找到发卡器，请先插好发卡器");

return;

}

else

{

reader.Connect(readers[0]);

this.Text = "发卡程序--发卡器已连接";

}

}

button1.Enabled = false;

button2.Enabled = true;

button3.Enabled = false;

faka = true;

while (faka)

{

if (i == Convert.ToInt16(textBox1.Text))

{

listView1.Items.RemoveAt(0);

i = 0;

}

ReadEpcResult readresult = reader.ReadEpc();

if (readresult.ReadResult.Result == AccessResult.Success)

{

EPCNo = readresult.TagAccessed.Epc;

if (EPCNo != listView1.Items[0].Text)

{

ProgramEpcParams pep = new ProgramEpcParams();

pep.NewEpc = listView1.Items[0].Text;

pep.AntennaPortNumber = 0;

pep.AccessPassword = "00000000";

ProgramEpcResult writeresult = reader.ProgramEpc(pep);

if (writeresult.WriteResult.Result == AccessResult.Success)

{

i = i + 1;

richTextBox1.Text = listView1.Items[0].Text + "发卡成功" + "\n";

}

}

else

{

richTextBox1.Text = listView1.Items[0].Text + "已发放，请放下一张" + "\n";

}

}

Thread.Sleep(100);

}

}

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zhanglong19891129 2012-09-07

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Application.DoEvents 这个东西是不是停止当前处理..等待其他消息啊?这个我还没用过

CCC的 2012-09-07

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草了个蛋蛋，加上Application.DoEvents就行了

CCC的 2012-09-07

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停止事件有里有修改faka为false

CCC的 2012-09-07

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可以不停的读卡并且将卡号放到richtextbox ,只是我想让它停止，一点停止按钮，不响应停止按钮的事件

zhanglong19891129 2012-09-07

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faka = true;

while (faka)
这个是不是你搞错了???while会无线循环的 ...你在while中又没有修改faka;;;

zhanglong19891129 2012-09-07

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那这个自己打个断点跟咯,,看在哪死掉了.

CCC的 2012-09-07

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会执行button1_Click ，是程序死掉了一样

zhanglong19891129 2012-09-07

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没反应是单击 button1的时候不进入到 button1_Click 还是怎么的??
假如是不进入到 button1_Click 那么你到当前from的 Designer.cs 文件中去检查下:
this.button1.Click += new System.EventHandler(this.button1_Click);看是不是是这样绑定的....

二当家 2012-09-07

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1看看button1 绑定的事件是不是 button1_Click
2打断点瞧瞧问题在哪里

CCC的 2012-09-07

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private void button1_Click(object sender, EventArgs e)



  {



  string EPCNo;



  int i = 0;



  if (this.Text == "发卡程序--未找到发卡器")



  {



  readers = reader.GetReaderList();



  if (readers.Count == 0)



  {



  MessageBox.Show("未找到发卡器，请先插好发卡器");



  return;



  }



  else



  {



  reader.Connect(readers[0]);



  this.Text = "发卡程序--发卡器已连接";



  }



  }



  button1.Enabled = false;



  button2.Enabled = true;



  button3.Enabled = false;



  faka = true;   



  while (faka)



  {



  if (i == Convert.ToInt16(textBox1.Text))



  {



  listView1.Items.RemoveAt(0);



  i = 0;



  }



  ReadEpcResult readresult = reader.ReadEpc();



  if (readresult.ReadResult.Result == AccessResult.Success)



  {



  EPCNo = readresult.TagAccessed.Epc;



 



  if (EPCNo != listView1.Items[0].Text)



  {



  ProgramEpcParams pep = new ProgramEpcParams();



  pep.NewEpc = listView1.Items[0].Text;



  pep.AntennaPortNumber = 0;



  pep.AccessPassword = "00000000";



 



  ProgramEpcResult writeresult = reader.ProgramEpc(pep);



  if (writeresult.WriteResult.Result == AccessResult.Success)



  {



  i = i + 1;



  richTextBox1.Text = listView1.Items[0].Text + "发卡成功" + "\n";



  }



  }



  else



  {



  richTextBox1.Text = listView1.Items[0].Text + "已发放，请放下一张" + "\n";



  }



  }



  Thread.Sleep(100);



  }



  }