OverwriteExisting Property

Summary
Gets or sets a flag that indicates whether to overwrite any existing files found with the same name(s).
Syntax
C#
C++/CLI
public bool OverwriteExisting { get; set; } 
public: 
property bool OverwriteExisting { 
   bool get(); 
   void set (    bool ); 
} 

Property Value

Flag that indicates whether to overwrite any existing files found with the same name(s). Possible values are: true to overwrite the existing file, false to generate new name(s) for the saved file(s) by adding an incremented number within braces. This is the default value.

Remarks

Note: This member is ignored when using WIA version 2.0.

Example
C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Wia; 
 
 
       
public void AcquireToFileExample(IntPtr parent) 
{ 
   if (!WiaSession.IsAvailable(WiaVersion.Version1)) 
   { 
      Console.WriteLine("WIA version 1.0 not installed."); 
      return; 
   } 
 
   WiaSession wiaSession = new WiaSession(); 
   wiaSession.Startup(WiaVersion.Version1); 
 
   DialogResult res = wiaSession.SelectDeviceDlg(parent, WiaDeviceType.Default, WiaSelectSourceFlags.NoDefault); 
   if (res != DialogResult.OK) 
   { 
      Console.WriteLine("Error selecting WIA device."); 
      wiaSession.Shutdown(); 
      return; 
   } 
 
   // Initialize and fill the required fields from the WiaAcquireOptions structure          
   WiaAcquireOptions wiaAcquireOptions = WiaAcquireOptions.Empty; 
   wiaAcquireOptions.FileName = Path.Combine(LEAD_VARS.ImagesDir, "WiaTest.bmp"); 
   wiaAcquireOptions.OverwriteExisting = true; 
   wiaAcquireOptions.Append = false; 
   wiaAcquireOptions.SaveToOneFile = false; 
   wiaSession.AcquireOptions = wiaAcquireOptions; 
 
   wiaSession.AcquireFileEvent += new EventHandler<WiaAcquireFileEventArgs>(wiaSession_AcquireFileEvent); 
 
   wiaSession.AcquireToFile(parent, null, WiaAcquireFlags.ShowUserInterface | WiaAcquireFlags.UseCommonUI); 
 
   // Display a listing of all paths and filenames for the saved files(s). 
   if (wiaSession.FilesCount > 0) 
   { 
      string strMsg = "Acquired page(s) were saved to:\n\n"; 
      for (int i = 0; i < wiaSession.FilesCount; i++) 
      { 
         string strTemp = string.Format("{0}\n", wiaSession.FilesPaths[i]); 
         strMsg += strTemp; 
      } 
      Console.WriteLine(strMsg); 
   } 
 
   wiaSession.AcquireFileEvent -= new EventHandler<WiaAcquireFileEventArgs>(wiaSession_AcquireFileEvent); 
   wiaSession.Shutdown(); 
} 
 
public void wiaSession_AcquireFileEvent(object sender, WiaAcquireFileEventArgs e) 
{ 
   Console.WriteLine(e.Percent); 
} 
 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2023.1.17
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Wia Assembly

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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.