清除原来打印机驱动

if (PrinterEnum.P800 == printerEnum)
{
int _Error = 0;
_Error = B_CreatePrn(1, ref gIntPrnHandle);
if (_Error != 0)
{
MessageBox.Show($"设置打印机失败，原因代码{_Error}");
return false;
}

_Error = B_Set_Darkness(gIntPrnHandle, 15);
if (_Error != 0)
{
MessageBox.Show($"设置打印机失败，原因代码{_Error}");
return false;
}
_Error = B_Prn_Text_TrueType_Uni(ghandle, 8, 8, txtBig, FindFontPath(), 1, 0, 0, 0);
if (_Error != 0)
{
MessageBox.Show($"设置打印机失败，原因代码{_Error}");
return false;
}
_Error = B_Del_Pcx(ghandle);
if (_Error < 0) { MessageBox.Show($"设置打印机失败，原因代码{_Error}"); return false; } _Error = B_Print_Out(gIntPrnHandle, 1); if (_Error != 0) { MessageBox.Show($"设置打印机失败，原因代码{_Error}"); return false; } B_ClosePrn(gIntPrnHandle); return true; } else { //PRINT_SHOW_POST_DIALOG int _Error = 0; byte _Result = 0; //设置打印机 _Error = B_CreatePrn_Port(0, PrinterName, 0, ref gIntPrnHandle); if (_Error != 0) { MessageBox.Show($"设置打印机失败，原因代码{_Error}"); return false; } _Error = B_Set_Darkness(gIntPrnHandle, 15); if (_Error != 0) { MessageBox.Show($"设置打印机失败，原因代码{_Error}"); return false; } _Error = B_Prn_Text_TrueType_Uni(ghandle, 8, 8, txtBig, FindFontPath(), 1, 0, 0, 0); if (_Error != 0) { MessageBox.Show($"设置打印机失败，原因代码{_Error}"); return false; } _Error = B_Del_Pcx(ghandle); if (_Error < 0) { MessageBox.Show($"设置打印机失败，原因代码{_Error}"); return false; } _Error = B_Print_Out(gIntPrnHandle, 1); if (_Error != 0) { MessageBox.Show($"设置打印机失败，原因代码{_Error}"); return false; } B_ClosePrn(gIntPrnHandle); return true; } } catch (Exception ex) { MessageBox.Show(ex.Message); return false; } } ///

/// /// /// /// ///
public static bool Print_New(PrinterEnum printerEnum, string PrinterName, string txtBig, string txtSmall = null)
{
try
{
int _Error = 0;
byte _Result = 0;
int gIntPrnHandle = 0;
int ghandle = 0;

//设置打印机
_Error = B_CreatePrn_Port(0, PrinterName, 0, ref gintPrnHandle);
if (_Error != 0)
{
MessageBox.Show($"设置打印机失败，原因代码{_Error}");
return false;
}

_Error = B_Set_Darkness(gIntPrnHandle, 15);
if (_Error != 0)
{
MessageBox.Show($"设置打印机失败，原因代码{_Error}");
return false;
}

_Error = B_Prn_Text_TrueType_Uni(ghandle, 8, 8, txtBig, FindFontPath(), 1, 0, 0, 0);
if (_Error != 0)