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Bazı insanlar için yararlı olacağına inandığım bir WIA Wrapper ürettim. Halen geliştirme aşamasındadır, ancak hepsi HasNextPage yönteminin çalışmadığı gerçeğinin yanı sıra çalışır. Kodu birçok farklı kaynaktan aldım. Ama temel olarak, kodumda, WF.Properties ADF'de hiç sayfa kalmadığında değişmez, böylece başka bir sayfa olduğunu düşünüyor? Bir özensiz yapabilirim (kağıt hatası olmazsa yakalamayı deneyin, ama bu çok özensiz). C# WIA ADF Sonraki sayfa
heres kodum:ps - i standartları kodlama üzerine zihni eleştiri yok, beni daha iyi bir programcı :) kod
(vardır birkaç satır Ben yapacağız şey hakkında yorum lütfen orada denemek için ve hata ayıklama o) asıl sorun olursa olsun benim yaptığım olduğunu Belge İşleme Durum
public struct PageSize
{
public double Height;
public double Width;
public PageSize(double height, double width)
{
this.Height = height;
this.Width = width;
}
}
class WIA_PROPERTIES
{
public const uint WIA_RESERVED_FOR_NEW_PROPS = 1024;
public const uint WIA_DIP_FIRST = 2;
public const uint WIA_DPA_FIRST = WIA_DIP_FIRST + WIA_RESERVED_FOR_NEW_PROPS;
public const uint WIA_DPC_FIRST = WIA_DPA_FIRST + WIA_RESERVED_FOR_NEW_PROPS;
//
// Scanner only device properties (DPS)
//
public const uint WIA_DPS_FIRST = WIA_DPC_FIRST + WIA_RESERVED_FOR_NEW_PROPS;
public const uint WIA_DPS_DOCUMENT_HANDLING_STATUS = WIA_DPS_FIRST + 13;
public const uint WIA_DPS_DOCUMENT_HANDLING_SELECT = WIA_DPS_FIRST + 14;
}
public class WiaWrapper
{
//Image Filenames
const string wiaFormatBMP = "{B96B3CAB-0728-11D3-9D7B-0000F81EF32E}";
const string wiaFormatPNG = "{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}";
const string wiaFormatGIF = "{B96B3CB0-0728-11D3-9D7B-0000F81EF32E}";
const string wiaFormatJPEG = "{B96B3CAE-0728-11D3-9D7B-0000F81EF32E}";
const string wiaFormatTIFF = "{B96B3CB1-0728-11D3-9D7B-0000F81EF32E}";
//Standard Page Sizes
public PageSize A3 = new PageSize(16.5, 11.7);
public PageSize A4 = new PageSize(11.7, 8.3);
public PageSize A5 = new PageSize(8.3, 5.8);
public PageSize A6 = new PageSize(5.8, 4.1);
public string DeviceID;
#region Setup/select Scanner
/// <summary>
/// Select Scanner.
/// If you need to save the Scanner, Save WiaWrapper.DeviceID
/// </summary>
public void SelectScanner()
{
WIA.CommonDialog wiaDiag = new WIA.CommonDialog();
try
{
Device d = wiaDiag.ShowSelectDevice(WiaDeviceType.UnspecifiedDeviceType, true, false);
if (d != null)
{
DeviceID = d.DeviceID;
return;
}
}
catch (Exception ex)
{
throw new Exception("Error, Is a scanner chosen?");
}
throw new Exception("No Device Selected");
}
/// <summary>
/// Connect to Scanning Device
/// </summary>
/// <param name="deviceID"></param>
/// <returns></returns>
private Device Connect()
{
Device WiaDev = null;
DeviceManager manager = new DeviceManager();
//Iterate through each Device until correct Device found
foreach (DeviceInfo info in manager.DeviceInfos)
{
if (info.DeviceID == DeviceID)
{
WIA.Properties infoprop = info.Properties;
WiaDev = info.Connect();
return WiaDev;
}
}
throw new Exception("Scanner not found - Is it setup in DeviceID?");
}
#endregion
#region Scanning utilities - hasMorePages, SetupPageSize, SetupADF, DeleteFile
/// <summary>
/// Check to see if ADF has more pages loaded
/// </summary>
/// <param name="wia"></param>
/// <returns></returns>
private bool HasMorePages(Device wia)
{
//determine if there are any more pages waiting
Property documentHandlingSelect = null;
Property documentHandlingStatus = null;
string test = string.Empty;
foreach (Property prop in wia.Properties)
{
string propername = prop.Name;
string propvalue = prop.get_Value().ToString();
test += propername + " " + propvalue + "<br>";
if (prop.PropertyID == WIA_PROPERTIES.WIA_DPS_DOCUMENT_HANDLING_SELECT)
documentHandlingSelect = prop;
if (prop.PropertyID == WIA_PROPERTIES.WIA_DPS_DOCUMENT_HANDLING_STATUS)
documentHandlingStatus = prop;
}
if ((Convert.ToUInt32(documentHandlingSelect.get_Value()) & 0x00000001) != 0)
{
return ((Convert.ToUInt32(documentHandlingStatus.get_Value()) & 0x00000001) != 0);
}
string tester = test;
return false;
}
/// <summary>
/// Setup Page Size
/// </summary>
/// <param name="wia"></param>
private void SetupPageSize(Device wia, bool rotatePage, PageSize pageSize, int DPI, WIA.Item item)
{
//Setup Page Size Property
foreach (WIA.Property itemProperty in item.Properties)
{
if (itemProperty.Name.Equals("Horizontal Resolution"))
{
((IProperty)itemProperty).set_Value(DPI);
}
else if (itemProperty.Name.Equals("Vertical Resolution"))
{
((IProperty)itemProperty).set_Value(DPI);
}
else if (itemProperty.Name.Equals("Horizontal Extent"))
{
double extent = DPI * pageSize.Height;
if (rotatePage)
{
extent = DPI * pageSize.Width;
}
((IProperty)itemProperty).set_Value(extent);
}
else if (itemProperty.Name.Equals("Vertical Extent"))
{
double extent = DPI * pageSize.Width;
if (rotatePage)
{
extent = pageSize.Height * DPI;
}
((IProperty)itemProperty).set_Value(extent);
}
}
}
/// <summary>
/// Setup device to Use ADF if required
/// </summary>
private void SetupADF(Device wia, bool duplex)
{
string adf = string.Empty;
foreach (WIA.Property deviceProperty in wia.Properties)
{
adf += deviceProperty.Name + "<br>";
if (deviceProperty.Name == "Document Handling Select") //or PropertyID == 3088
{
int value = duplex ? 0x004 : 0x001;
deviceProperty.set_Value(value);
}
}
}
private void Delete_File(string filename)
{
//Overwrite File
if (File.Exists(filename))
{
//file exists, delete it
File.Delete(filename);
}
}
#endregion
#region Scan Page - Main Public Method
/// <summary>
/// Scan Page,
/// </summary>
/// <param name="wia">Connected Device</param>
/// <param name="pageSize">Page Size. A4, A3, A2 Etc</param>
/// <param name="RotatePage">Rotation of page while scanning</param>
public void Scan(PageSize pageSize, bool rotatePage, int DPI, string filepath, bool useAdf, bool duplex)
{
int pages = 0;
bool hasMorePages = false;
WIA.CommonDialog WiaCommonDialog = new WIA.CommonDialog();
try
{
do
{
//Connect to Device
Device wia = Connect();
WIA.Item item = wia.Items[1] as WIA.Item;
//Setup ADF
if ((useAdf) || (duplex))
SetupADF(wia, duplex);
//Setup Page Size
SetupPageSize(wia, rotatePage, pageSize, DPI,item);
WIA.ImageFile imgFile = null;
WIA.ImageFile imgFile_duplex = null; //if duplex is setup, this will be back page
imgFile = (ImageFile)WiaCommonDialog.ShowTransfer(item, wiaFormatJPEG, false);
//If duplex page, get back page now.
if (duplex)
{
imgFile_duplex = (ImageFile)WiaCommonDialog.ShowTransfer(item, wiaFormatJPEG, false);
}
string varImageFileName = filepath + "\\Scanned-" + pages.ToString() + ".jpg";
Delete_File(varImageFileName); //if file already exists. delete it.
imgFile.SaveFile(varImageFileName);
string varImageFileName_duplex;
if (duplex)
{
varImageFileName_duplex = filepath + "\\Scanned-" + pages++.ToString() + ".jpg";
Delete_File(varImageFileName_duplex); //if file already exists. delete it.
imgFile_duplex.SaveFile(varImageFileName);
}
//Check with scanner to see if there are more pages.
if (useAdf || duplex)
{
hasMorePages = HasMorePages(wia);
pages++;
}
}
while (hasMorePages);
}
catch (COMException ex)
{
throw new Exception(CheckError((uint)ex.ErrorCode));
}
}
#endregion