FileName Property (Device)

In This Topic

Gets or sets the path to a file where next acquired image should be saved when File transfer mode is used.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration

Public Property FileName As String

public string FileName { get; set; }

public: __property string* get_FileName();
public: __property void set_FileName(
   string* value
);

public:
property string^ FileName {
   string^ get();
   void set(string^ value);
}

Property Value

Default value is "test.bmp". Path must contain not more than 255 symbols.

Exceptions

Exception	Description
System.ArgumentNullException	Thrown if value is null.
System.ArgumentException	Thrown if value has wrong length.

Example

This C#/VB.NET code shows how to acquire images directly to TIFF files.

VB.NET


Public Sub AcquireImagesUsingFileTransferModeAsJpegFiles()
        Using deviceManager As New Vintasoft.Twain.DeviceManager()
                ' open the device manager
                deviceManager.Open()

                ' get reference to the default device
                Dim device As Vintasoft.Twain.Device = deviceManager.DefaultDevice

                device.ShowUI = False
                device.DisableAfterAcquire = True

                ' open the device
                device.Open()

                ' set acquisition parameters
                device.TransferMode = Vintasoft.Twain.TransferMode.File
                device.FileFormat = Vintasoft.Twain.TwainImageFileFormat.Jpeg
                device.FileJpegQuality = 70

                Dim imageCount As Integer = 0
                ' set filename the first acquired image
                device.FileName = String.Format("c:\images\page{0}.jpg", System.Math.Max(System.Threading.Interlocked.Increment(imageCount),imageCount - 1))

                ' acquire images from device
                Dim acquireModalState As Vintasoft.Twain.AcquireModalState = Vintasoft.Twain.AcquireModalState.None
                Do
                        acquireModalState = device.AcquireModal()
                        Select Case acquireModalState
                                Case Vintasoft.Twain.AcquireModalState.ImageAcquired
                                        ' set filename for next acquired image
                                        device.FileName = String.Format("c:\images\page{0}.jpg", System.Math.Max(System.Threading.Interlocked.Increment(imageCount),imageCount - 1))
                                        Exit Select
                        End Select
                Loop While acquireModalState <> Vintasoft.Twain.AcquireModalState.None

                ' close the device
                device.Close()

                ' close the device manager
                deviceManager.Close()
        End Using
End Sub


public void AcquireImagesUsingFileTransferModeAsJpegFiles()
{
    using (Vintasoft.Twain.DeviceManager deviceManager = new Vintasoft.Twain.DeviceManager())
    {
        // open the device manager
        deviceManager.Open();

        // get reference to the default device
        Vintasoft.Twain.Device device = deviceManager.DefaultDevice;

        device.ShowUI = false;
        device.DisableAfterAcquire = true;

        // open the device
        device.Open();

        // set acquisition parameters
        device.TransferMode = Vintasoft.Twain.TransferMode.File;
        device.FileFormat = Vintasoft.Twain.TwainImageFileFormat.Jpeg;
        device.FileJpegQuality = 70;

        int imageCount = 0;
        // set filename the first acquired image
        device.FileName = string.Format(@"c:\images\page{0}.jpg", imageCount++);

        // acquire images from device
        Vintasoft.Twain.AcquireModalState acquireModalState = Vintasoft.Twain.AcquireModalState.None;
        do
        {
            acquireModalState = device.AcquireModal();
            switch (acquireModalState)
            {
                case Vintasoft.Twain.AcquireModalState.ImageAcquired:
                    // set filename for next acquired image
                    device.FileName = string.Format(@"c:\images\page{0}.jpg", imageCount++);
                    break;
            }
        }
        while (acquireModalState != Vintasoft.Twain.AcquireModalState.None);

        // close the device
        device.Close();

        // close the device manager
        deviceManager.Close();
    }
}

Requirements

Target Platforms: .NET 8, .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

Device Class
Device Members

FileFormat
TransferMode

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