/// <summary>
/// 初始化设备
/// </summary>
/// <returns>返回设备列表</returns>
public List <string> InitializeDevice()
{
//获取设备上下文句柄
runResult = PCSC.SCardEstablishContext(0, 0, 0, ref hContext);
if (runResult != SCARD_SUCCESS)
{
errMsg = "获取设备上下文失败，错误代码为：" + runResult.ToString("X");
//Log.WriteLog(errMsg);
throw new Exception(errMsg);
}
if (hContext == 0)
{
errMsg = "未能获取设备上下文句柄";
// Log.WriteLog(errMsg);
throw new Exception(errMsg);
}
int mszReaderSize = 0;
//获取读卡器列表，第一次用于获取字符串长度
runResult = PCSC.SCardListReaders(hContext, null, null, ref mszReaderSize);
if (runResult != SCARD_SUCCESS)
{
errMsg = "获取读卡器列表，错误代码为：" + runResult.ToString("X");
// Log.WriteLog(errMsg);
throw new Exception(errMsg);
}
List <string> readerList = new List <string>();
byte[] reads = new byte[mszReaderSize];
//获取读卡器列表
runResult = PCSC.SCardListReaders(hContext, null, reads, ref mszReaderSize);
if (runResult != SCARD_SUCCESS)
{
errMsg = "获取读卡器列表，错误代码为：" + runResult.ToString("X");
// Log.WriteLog(errMsg);
throw new Exception(errMsg);
}
ASCIIEncoding encoding = new ASCIIEncoding();
string strBuffer = encoding.GetString(reads);
char nullChar = '\0';
int len = mszReaderSize;
int index = 0;
while (strBuffer[0] != nullChar)
{
index = strBuffer.IndexOf(nullChar);
string reader = strBuffer.Substring(0, index);
len = len - (reader.Length + 1);
strBuffer = strBuffer.Substring(index + 1, len);
readerList.Add(reader);
}
return(readerList);
}
