۲۸-مرداد-۱۳۹۲, ۲۰:۱۹:۵۷
ابتدا کلاس را به برنامه اضافه نمائید و سپس آنرا فرا خوانی کنید
این هم روش استفاده :
کد:
public class ImageAcquisition
{
private WIALib.WiaClass WiaClass;
private WIALib.ItemClass ItemClass;
private WIALib.CollectionClass CollectionClassDevices;
private WIALib.CollectionClass CollectionClassPics;
#region SelectDevice
public bool SelectDevice()
{
try
{
object selectUsingUI;
WiaClass = new WIALib.WiaClass();
CollectionClassDevices = (WIALib.CollectionClass)WiaClass.Devices;
if (WiaClass.Devices.Count == 0)
return false;
selectUsingUI = System.Reflection.Missing.Value;
ItemClass = (WIALib.ItemClass)WiaClass.Create(ref selectUsingUI);
if (ItemClass == null)
return false;
return true;
}
catch (System.Exception exp)
{
return false;
}
}
#endregion
#region Capture
public System.Drawing.Image Capture()
{
try
{
CollectionClassPics = ItemClass.GetItemsFromUI(WIALib.WiaFlag.SingleImage, WIALib.WiaIntent.ImageTypeColor) as WIALib.CollectionClass;
if (CollectionClassPics == null)
return null;
ItemClass = (WIALib.ItemClass)System.Runtime.InteropServices.Marshal.CreateWrapperOfType(CollectionClassPics[0], typeof(WIALib.ItemClass));
string imageFileName = System.IO.Path.GetTempFileName();
ItemClass.Transfer(imageFileName, false);
System.Drawing.Image Image = System.Drawing.Image.FromFile(imageFileName);
System.Runtime.InteropServices.Marshal.ReleaseComObject(CollectionClassPics[0]);
return Image;
}
catch (System.Exception exp)
{
return null;
}
}
#endregion
}کد:
ImageAcquisition ImageAcquisition = new ImageAcquisition();
ImageAcquisition.SelectDevice();
this.pictureBox.Image = ImageAcquisition.Capture();