←Select platform

QueryFileSystem Method

Summary
Queries the TWAIN file system.

Syntax
C#
C++/CLI
Python
public void QueryFileSystem( 
   TwainFileSystem fileSystem, 
   TwainFileSystemMessage message 
) 
public: 
void QueryFileSystem(  
   TwainFileSystem^ fileSystem, 
   TwainFileSystemMessage message 
)  
def QueryFileSystem(self,fileSystem,message): 

Parameters

fileSystem
TwainFileSystem contains file system information

message
Determines the TWAIN file system message.

Return Value

A TwainFileSystem object that represents the specified TWAIN file system message

Remarks

This method will query the TWAIN file system for digital cameras, and update the TWAIN file system based on the message passed to the fileSystemMsg parameters.

Example
C#
using Leadtools; 
using Leadtools.Twain; 
 
 
public void QueryFileSystemExample(IntPtr parent) 
{ 
   TwainSession session = new TwainSession(); 
   TwainFileSystem fileSystem = new TwainFileSystem(); 
   string msg; 
 
   try 
   { 
      session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None); 
      session.QueryFileSystem(fileSystem, TwainFileSystemMessage.AutomaticCaptureDirectory); 
 
      msg = String.Format(@"Input Name = {0}\nOutput Name = {1}\nRecursive = {2}\nFileType = {3}\nFileSize = {4}\nCreateTimeDate = {5}\nModifiedTimeDate = {6}\nFreeMediaSpace = {7}\nNewImageSize = {8}\nNumberOfFiles 
            = {9}\nNumberOfAudioSnippets = {10}\nDeviceGroupMask = {11}\n", 
         fileSystem.InputName, 
         fileSystem.OutputName, 
         fileSystem.Recursive, 
         // I changed the following line from "fileSystem.FileType" to "fileSystem.FileFormat" 
         fileSystem.FileFormat, 
         fileSystem.FileSize, 
         fileSystem.CreateTimeDate, 
         fileSystem.ModifiedTimeDate, 
         fileSystem.FreeSpace, 
         fileSystem.NewImageSize, 
         fileSystem.NumberOfFiles, 
         fileSystem.NumberOfAudioSnippets, 
         fileSystem.DeviceGroupMask); 
 
      MessageBox.Show(msg); 
   } 
   catch (Exception ex) 
   { 
      MessageBox.Show(ex.Message); 
   } 
   finally 
   { 
      session.Shutdown(); 
   } 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Twain Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.