GetPropertySystemTime Method

Visual Basic
C#
Objective-C
Java
C++

public DateTime GetPropertySystemTime( 
   object item,
   string propertyIdName,
   WiaPropertyId propertyId
)

'Declaration
 
Public Function GetPropertySystemTime( _
   ByVal item As Object, _
   ByVal propertyIdName As String, _
   ByVal propertyId As WiaPropertyId _
) As Date

'Usage
 
Dim instance As WiaSession
Dim item As Object
Dim propertyIdName As String
Dim propertyId As WiaPropertyId
Dim value As Date
 
value = instance.GetPropertySystemTime(item, propertyIdName, propertyId)

public:
DateTime GetPropertySystemTime( 
   Object^ item,
   String^ propertyIdName,
   WiaPropertyId propertyId
)

Parameters

item

Handle to the item which represents the item having the property. You can retrieve this parameter by either calling the GetRootItem method to get the device's root item itself or by enumerating the child items of the device through a call to EnumChildItems method.

propertyIdName

This string should contain the equivalent property Id string for the WIA property ID. Use the see GetPropertyIdString method to get this string for the property ID.

If you passed null for this parameter then the WIA toolkit will use the property ID passed through the third parameter propertyId; otherwise this parameters will be used whether or not you passed valid property ID through the propertyId parameter

propertyId

The property ID for the value being sought, for list of available property IDs see WiaPropertyId.

This parameter is required only if the second parameter "propertyIdName"is null; otherwise you can pass 0 for this parameter.

Return Value

The WIA system date.

Call this function to retrieve a System.DateTime structure for any WIA property of type /// WiaVariableTypes.UI2 or WiaVariableTypes.Vector (for instance, and WiaPropertyId.DeviceTime WiaPropertyId.ItemTime) to return the date and time of the item.

For more information, refer to Managing WIA Sources.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Wia

Dim wia_Session As WiaSession
Public Sub GetPropertySystemTimeExample(ByVal parent As IWin32Window)
   If (Not WiaSession.IsAvailable(WiaVersion.Version1)) Then
      MessageBox.Show("WIA version 1.0 not installed.")
      Return
   End If

   wia_Session = New WiaSession()
   wia_Session.Startup(WiaVersion.Version1)

   Dim res As DialogResult = wia_Session.SelectDeviceDlg(parent, WiaDeviceType.Default, WiaSelectSourceFlags.NoDefault)
   If res <> DialogResult.OK Then
      MessageBox.Show("Error selecting WIA device.")
      wia_Session.Shutdown()
      Return
   End If

   Dim rootItem As Object = wia_Session.GetRootItem(Nothing)
   If Not rootItem Is Nothing Then
      AddHandler wia_Session.EnumItemsEvent, AddressOf session_EnumItemsEvent5

      wia_Session.EnumChildItems(rootItem)

      RemoveHandler wia_Session.EnumItemsEvent, AddressOf session_EnumItemsEvent5
   End If

   wia_Session.Shutdown()
End Sub

Private Sub session_EnumItemsEvent5(ByVal sender As Object, ByVal e As WiaEnumItemsEventArgs)
   If Not e.Item Is Nothing Then
      ' Get the item's system time.
      Dim dateTimeValue As DateTime = wia_Session.GetPropertySystemTime(e.Item, Nothing, WiaPropertyId.ItemTime)

      ' You can change the item's system time to your machine system time.
      dateTimeValue = System.DateTime.Now
      wia_Session.SetPropertySystemTime(e.Item, Nothing, WiaPropertyId.ItemTime, dateTimeValue)

      wia_Session.FreeItem(e.Item)
   End If
End Sub

using Leadtools;
using Leadtools.Codecs;
using Leadtools.Wia;

WiaSession wia_Session;
public void GetPropertySystemTimeExample(IWin32Window parent)
{
   if (!WiaSession.IsAvailable(WiaVersion.Version1))
   {
      MessageBox.Show("WIA version 1.0 not installed.");
      return;
   }

   wia_Session = new WiaSession();
   wia_Session.Startup(WiaVersion.Version1);

   DialogResult res = wia_Session.SelectDeviceDlg(parent, WiaDeviceType.Default, WiaSelectSourceFlags.NoDefault);
   if (res != DialogResult.OK)
   {
      MessageBox.Show("Error selecting WIA device.");
      wia_Session.Shutdown();
      return;
   }

   object rootItem = wia_Session.GetRootItem(null);
   if (rootItem != null)
   {
      wia_Session.EnumItemsEvent += new EventHandler<WiaEnumItemsEventArgs>(wiaSession_EnumItemsEvent5);

      wia_Session.EnumChildItems(rootItem);

      wia_Session.EnumItemsEvent -= new EventHandler<WiaEnumItemsEventArgs>(wiaSession_EnumItemsEvent5);
   }

   wia_Session.Shutdown();
}

void wiaSession_EnumItemsEvent5(object sender, WiaEnumItemsEventArgs e)
{
   if (e.Item != null)
   {
      // Get the item's system time.
      DateTime dateTimeValue = wia_Session.GetPropertySystemTime(e.Item, null, WiaPropertyId.ItemTime);

      // You can change the item's system time to your machine system time.
      dateTimeValue = System.DateTime.Now;
      wia_Session.SetPropertySystemTime(e.Item, null, WiaPropertyId.ItemTime, dateTimeValue);

      wia_Session.FreeItem(e.Item);
   }
}

Target Platforms

Reference

WiaSession Class
WiaSession Members
Startup Method
Shutdown Method
GetRootItem Method
EnumChildItems Method
GetProperties Method
SetProperties Method
GetPropertyBuffer Method
SetPropertyBuffer Method
GetPropertyLong Method
SetPropertyLong Method
GetPropertyString Method
SetPropertyString Method
GetPropertyGuid Method
SetPropertyGuid Method
SetPropertySystemTime Method