private void _twain32_AcquireError(object sender, Twain32.AcquireErrorEventArgs e)
{
if (MessageBox.Show(e.Exception.Message, "Error!", MessageBoxButton.YesNo, MessageBoxImage.Error) == MessageBoxResult.Yes)
{
_twain32?.CloseDSM();
_twain32?.CloseDataSource();
_twain32.Dispose();
Environment.ExitCode = (int)ExitCodes.ExitCode.ERROR_NOT_ENOUGH_MEMORY;
this.Close();
}
}
private void _scannersListPreview_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
try
{
_twain32?.Dispose();
_twain32 = new Twain32
{
ShowUI = true,
IsTwain2Enable = true
};
_twain32.OpenDSM();
_twain32.SourceIndex = Scanners.IndexOf(SelectedScanner);
_twain32.OpenDataSource();
_twain32.EndXfer += _twain32_EndXfer;
_twain32.AcquireCompleted += _twain32_AcquireCompleted;
_twain32.AcquireError += _twain32_AcquireError;
_twain32.MemXferEvent += _twain32_MemXferEvent;
_twain32.Acquire();
if (_scannedImage != null)
{
SaveImage();
}
Environment.ExitCode = (int)ExitCodes.ExitCode.SUCCESS;
CustomMessageBox.Show($"Save photo: {Path.GetFileName(_filePath)}\n{_destinationPath}", "Succes", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Information);
}
catch (Exception ex)
{
var messagebox = CustomMessageBox.Show(ex.Message, "Scanner Error!", System.Windows.Forms.MessageBoxButtons.YesNo, System.Windows.Forms.MessageBoxIcon.Error);
if (messagebox == System.Windows.Forms.DialogResult.Yes)
{
Environment.ExitCode = (int)ExitCodes.ExitCode.ERROR_DEVICE_UNREACHABLE;
}
}
finally
{
_twain32?.CloseDSM();
_twain32?.CloseDataSource();
_twain32.Dispose();
GC.Collect();
GC.WaitForPendingFinalizers();
this.Close();
}
}
private void cbxScanner_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
_twain.CloseDataSource();
_twain.SourceIndex = cbxScanner.SelectedIndex;
_twain.OpenDataSource();
}
catch (TwainException ex)
{
LogFactory.CreateLog().LogError(ex);
MessageBox.Show(ErrorMessages.ScannerCannotByActivate, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
DisplayColorFormats();
DisplayResolutions();
}
private void _twain_TwainStateChanged(object sender, Twain32.TwainStateEventArgs e)
{
logger.Debug("Handle TwainState");
if ((e.TwainState & Twain32.TwainStateFlag.DSEnabled) == 0 && this._isEnable)
{
this._isEnable = false;
// <<< scaning finished (or closed)
if (stream != null)
{
FinishImageTransfer();
}
logger.Debug("Сканирование закончено...");
_twain32.CloseDataSource();
}
this._isEnable = (e.TwainState & Twain32.TwainStateFlag.DSEnabled) != 0;
logger.Debug($"Handle TwainState end");
}
public IEnumerable <HWDeviceDesciption> GetDevices()
{
var twain = new Twain32();
var isDsmOpened = false;
try
{
//twain.OpenDataSource();
isDsmOpened = twain.OpenDSM();
if (twain.IsTwain2Supported)
{
twain.IsTwain2Enable = true;
}
}
catch (Exception ex)
{
logger.Error(ex);
}
if (isDsmOpened)
{
for (int i = 0; i < twain.SourcesCount; i++)
{
yield return(new HWDeviceDesciption
{
Device = DeviceType.Scanner,
Name = twain.GetSourceProductName(i),
DeviceId = i.ToString()
});
}
}
if (twain != null)
{
twain.CloseDataSource();
twain.CloseDSM();
twain.Dispose();
}
yield break;
}
private void LoadParametes()
{
try
{
_twain32 = new Twain32
{
ShowUI = true,
IsTwain2Enable = true
};
_twain32.OpenDSM();
#region GetScanners
for (int i = 0; i < _twain32.SourcesCount; i++)
{
_scanners.Add(_twain32.GetSourceProductName(i));
}
#endregion GetScanners
if (Scanners.Count > 0)
{
SelectedScanner = Scanners.FirstOrDefault();
}
}
catch (Exception ex)
{
var messagebox = CustomMessageBox.Show(ex.Message, "Error!", System.Windows.Forms.MessageBoxButtons.YesNo, System.Windows.Forms.MessageBoxIcon.Error);
if (messagebox == System.Windows.Forms.DialogResult.Yes)
{
_twain32?.CloseDSM();
_twain32?.CloseDataSource();
_twain32.Dispose();
Environment.ExitCode = (int)ExitCodes.ExitCode.ERROR_DEVICE_UNREACHABLE;
this.Close();
}
}
}
/// <summary>
/// start scanning
/// </summary>
public void Start()
{
//logger.Debug("Start");
try
{
if (!twain.OpenDSM())
{
logger.Debug("Не могу найти сканер");
Error(this, new HWErrorEventArgs("Не могу найти сканер"));
return;
}
if (!twain.IsTwain2Supported)
{
twain.CloseDSM();
twain.IsTwain2Enable = false;
twain.OpenDSM();
}
}
catch (Exception ex)
{
logger.Error(ex);
// TODO: add logging
Error(this, new HWErrorEventArgs(ex.Message));
return;
}
if (selectedScanner.DeviceId != "")
{
twain.SourceIndex = int.Parse(selectedScanner.DeviceId);
}
else
{
logger.Debug("selectedScanner.DeviceId == String.Empty ");
}
try
{
if (!twain.OpenDataSource())
{
logger.Debug("Не могу установить соединение со сканером");
Error(this, new HWErrorEventArgs("Не могу установить соединение со сканером"));
return;
}
}
catch (Exception ex)
{
logger.Error(ex);
// TODO: add logging
Error(this, new HWErrorEventArgs(ex.Message));
return;
}
int dpiResolution = 200;
if (System.Configuration.ConfigurationManager.AppSettings["ScannerDpi"] != null)
{
dpiResolution = int.Parse(System.Configuration.ConfigurationManager.AppSettings["ScannerDpi"]);
}
setPixelType();
float Height, Weight;
int X, Y;
//ScanWidht
try
{
Height = float.Parse(System.Configuration.ConfigurationManager.AppSettings["ScanHeight"], System.Globalization.CultureInfo.InvariantCulture) / (float)2.54;
Weight = float.Parse(System.Configuration.ConfigurationManager.AppSettings["ScanWidht"], System.Globalization.CultureInfo.InvariantCulture) / (float)2.54;
X = int.Parse(System.Configuration.ConfigurationManager.AppSettings["ScanStartPointX"]);
Y = int.Parse(System.Configuration.ConfigurationManager.AppSettings["ScanStartPointY"]);
}
catch (Exception ex)
{
Height = 6.6462525f;
Weight = 6.6462525f;
X = 0;
Y = 0;
logger.Error(ex);
}
//задаем область сканирования в точке 0 и размером A6
IsLayoutSet = SetImageLayOut(new RectangleF(new PointF(X, Y), new SizeF(Weight, Height)));
//если не смогли задать область сканируем не выше 300 dpi
if (IsLayoutSet)
{
SetResolutions(dpiResolution);
}
else
{
SetResolutions(300);
}
try
{
twain.Acquire();
}
catch (Exception ex)
{
twain.CloseDSM();
twain.CloseDataSource();
logger.Error(ex);
// TODO: add logging
Error(this, new HWErrorEventArgs(ex.Message));
return;
}
}
private void scanCmb_SelectedIndexChanged(object sender, EventArgs e)
{
//读取扫描仪配置
if (!string.IsNullOrEmpty(hand.ReadConfig("twName")))
{
string twname = hand.ReadConfig("twName");
int j = -1;
for (int i = 0; i < scanCmb.Items.Count; i++)
{
if (scanCmb.Items[i].ToString().Equals(twname))
{
j = i;
break;
}
}
if (j < 0)
{
MessageBox.Show("在本机没有找到对应的扫描仪信息，请重新设置扫描仪!");
}
else
{
try
{
mTwain.SourceIndex = j;
mTwain.OpenDataSource();
var _resolutions = mTwain.Capabilities.XResolution.Get();
List <string> dpilst = new List <string>();
for (var i = 0; i < _resolutions.Count; i++)
{
dpilst.Add(_resolutions[i].ToString());
}
dpiCmb.DataSource = dpilst;
mTwain.CloseDataSource();
//读取扫描仪DPI配置
if (!string.IsNullOrEmpty(hand.ReadConfig("dpi")))
{
string dpi = hand.ReadConfig("dpi");
int dj = -1;
for (int di = 0; di < dpiCmb.Items.Count; di++)
{
if (dpiCmb.Items[di].ToString().Equals(dpi))
{
dj = di;
break;
}
}
if (dj < 0)
{
MessageBox.Show("在本机没有找到扫描仪预设的DPI值，请重新设置DPI值!");
}
else
{
this.dpiCmb.SelectedIndex = dj;
}
}
}
catch (Exception)
{
Logger.Error("读取扫描仪信息失败!");
MessageBox.Show("读取扫描仪信息失败!,请重新设置扫描仪!");
}
}
}
}