private void buttonPrienterStat_Click(object sender, EventArgs e)
{
string reStr = "";
PrinterReStat stat = new PrinterReStat();
bool re = printer.PrinterStat(ref stat, ref reStr);
AddLog(reStr);
}
public bool PrinterStat(ref PrinterReStat stat, ref string reStr)
{
if (!isConnected)
{
reStr = "贴标机未连接";
return(false);
}
try
{
string sndStr = "stat\n";
byte[] sndBuf = System.Text.Encoding.GetEncoding(936).GetBytes(sndStr);
if (!SendBuf(sndBuf, ref reStr))
{
reStr = "发送：" + sndStr + "接收：" + reStr;
return(false);
}
//返回信息,应答超时，001 错误信息，000 OK
stat = new PrinterReStat();
bool re = false;
if (reStr.Length > 3)
{
if (reStr.Substring(0, 3) == "000")
{
re = true;
}
}
else
{
re = false;
}
reStr = "发送：" + sndStr + " 接收：" + reStr;
return(re);
}
catch (Exception ex)
{
reStr = ex.ToString();
return(false);
}
}
/// <summary>
/// 作者:np
/// 时间:2014年6月2日
/// 内容:TCP读数据的回调函数
/// </summary>
/// <param name="ar"></param>
private void TCPReadCallBack(IAsyncResult ar)
{
try
{
StateObject state = (StateObject)ar.AsyncState;
if ((state.client == null) || (!state.client.Connected)) //主动断开时
{
this.isConnected = false;
return;
}
int numberOfBytesRead;
NetworkStream netStream = state.client.GetStream();
numberOfBytesRead = netStream.EndRead(ar);
state.totalBytesRead += numberOfBytesRead;
if (numberOfBytesRead > 0)
{
byte[] recBytes = new byte[numberOfBytesRead];
Array.Copy(state.buffer, 0, recBytes, 0, numberOfBytesRead);
for (int i = 0; i < numberOfBytesRead; i++)
{
// if(recBytes[i] == 0x0D)
if (recBytes[i] == 0x0A)
{
recvStr = System.Text.Encoding.GetEncoding(936).GetString(saveBuf.ToArray()).Trim();
// recvStr = System.Text.Encoding.UTF8.GetString(saveBuf.ToArray()).Trim();
string[] strArry = recvStr.Split(new string[] { ",", " ", ":", "-", "|" }, StringSplitOptions.RemoveEmptyEntries);
if (strArry.Count() > 1)
{
reStat = new PrinterReStat();
reStat.errCode = strArry[0];
reStat.errInfo = strArry[1];
}
break;
}
else
{
this.saveBuf.Add(recBytes[i]);
}
}
netStream.BeginRead(state.buffer, 0, StateObject.BufferSize, new AsyncCallback(TCPReadCallBack), state);
}
else
{
//被动断开时
netStream.Close();
state.client.Close();
netStream = null;
state = null;
this.isConnected = false;
}
}
catch (System.Exception ex)
{
isConnected = false;
}
}
