Public Sub StartFeedLoad( _
   ByVal bitsPerPixel As Integer, _
   ByVal order As CodecsLoadByteOrder _
) 

Visual Basic (Usage)	Copy Code
Dim instance As RasterCodecs Dim bitsPerPixel As Integer Dim order As CodecsLoadByteOrder   instance.StartFeedLoad(bitsPerPixel, order)

public void StartFeedLoad( 
   int bitsPerPixel,
   CodecsLoadByteOrder order
)

public:
void StartFeedLoad( 
   int bitsPerPixel,
   CodecsLoadByteOrder order
) 

Parameters

bitsPerPixel

Resulting image pixel depth. Valid values are:

value	meaning
0	Keep the original file's pixel depth (Do not convert).
1 to 8	The specified bits per pixel in the resultant image.
12	12 bits per pixel in the resultant image.
16	16 bits per pixel in the resultant image.
24	24 bits per pixel in the resultant image.
32	32 bits per pixel in the resultant image.
48	48 bits per pixel in the resultant image.
64	64 bits per pixel in the resultant image.

order

An CodecsLoadByteOrder that specifies the desired color order. Use CodecsLoadByteOrder.BgrOrGray if you want to keep the original byte order as it occur in the image.

You must call FeedLoad to supply buffered data, and you must call StopFeedLoad when the loading is complete.

This file-load process is useful when receiving transmitted images, such as those on the Internet. It works the same way as the RasterCodecs.Load method, except that your code supplies the image data. The file-load process works as follows:

1. You call StartFeedLoad to initialize the file-load process.
2. You create a buffer, and each time you fill it with information, you call FeedLoad method, which sends the data to the file-load process just as if the data were being read from a file on disk.
3. Whenever it has enough data to do so, the file-load process behaves the same as in RasterCodecs.Load. It allocates and begins loading the bitmap. The file-load process does not update information in the RasterImage until it has received enough information to do so. (Usually, the information, such as the image height and width, is in the file header.) The file-load process will make the first call to your event handler whenever this information is available. To end the file-load process, you call StopFeedLoad, which cleans up the process, and returns the loaded RasterImage, if successful. If you call this function before supplying the complete file, it will successfully clean up the process, but will throw an exception. You should catch the exception if the load is canceled purposely.

You can use the feed load mechanism to load an image file from any kind of stream (memory, file, HTTP). You can also use it to update a progress bar while loading your image.

For more information, refer to Loading and Saving Images.

For more information, refer to Loading and Saving Large Tiff Files.

For more information, refer to Loading and Saving Large Tiff Files.

Target Platforms: Microsoft .NET CF Framework 2.0, Windows Mobile 5 PocketPC, Windows Mobile 5 Smartphone, Windows Mobile 6

Reference