Downloads an image from the HTTP server.

Namespace: Dynamsoft.DotNet.TWAIN
Assembly: DynamicDotNetTWAIN (in DynamicDotNetTWAIN.dll) Version: 3.0.0.0 (3.0.0.0)

Syntax

C#
public bool HTTPDownloadEx(
	string strHTTPServer,
	string strHTTPRemoteFile,
	DWTImageFileFormat enumImageType
)
Visual Basic
Public Function HTTPDownloadEx ( _
	strHTTPServer As String, _
	strHTTPRemoteFile As String, _
	enumImageType As DWTImageFileFormat _
) As Boolean

Parameters

strHTTPServer
Type: System..::..String
The name of the HTTP server.It should be only the name of the HTTP server, without "http://" or "https://".Port number is not needed here.
strHTTPRemoteFile
Type: System..::..String
The name of the image to be downloaded. It should be the relative path of the file on the HTTP server.
enumImageType
Type: Dynamsoft.DotNet.TWAIN.Enums..::..DWTImageFileFormat
The image format of the file to be downloaded.

Return Value

True indicates success. False indicates failure.

Remarks

Dynamic .NET TWAIN processes the image format according to the value of the ImageType. DWTImageFileFormat Allowed Values ImageType WEBTW_BMP BMP WEBTW_JPG JPEG WEBTW_TIF TIFF WEBTW_PNG PNG WEBTW_PDF PDF HTTPRemoteFile parameter should include the HTTP directory of the file. The image downloaded will be displayed in Dynamic .NET TWAIN, just as it is acquired from a TWAIN Data Source.

Exceptions

ExceptionCondition
Dynamsoft.DotNet.TWAIN..::..TwainException When an error occurs and IfThrowException property is true, an exception will be thrown. When IfThrowException property is false, please check ErrorCode and ErrorString.

See Also