[mapguide-users] Trouble with rendering service

[Kenneth, GEOGRAF A/S]

I have not used this for a while, as I found it borderline useless with 
the reader complications.

As I recall, you cannot exhaust the MgByteReader by a single call.
You must itterate over the reader, and read 8K blocks for each itteration.

As I wrote, you should be able to find working code by searhing the posts.
If you find it, the Code Wiki is at:
http://trac.osgeo.org/mapguide/wiki/CodeSamples

Regards, Kenneth, GEOGRAF A/S



monegodj skrev:
> This snippet is where I connect to the rendering service, call it, and then
> write to the HTML response (and to file, to test the call). I've cut out
> setting up the selection and the map connection (sel and map) to keep this
> brief.
>
>
>         ...
>
>         MgRenderingService sRendering =
> (MgRenderingService)connection.CreateService(MgServiceType.RenderingService);
>         MgByteReader mapguideImageData = sRendering.RenderMap(map, sel,
> "JPG");
>         byte[] imageData = new byte[mapguideImageData.GetLength()];
>         mapguideImageData.Read(imageData, 0);
>         Response.ContentType = mapguideImageData.GetMimeType();
>         Response.BinaryWrite(imageData);
>         Response.End();
>         FileStream f = (new
> FileInfo(@"D:\test.jpg")).Open(FileMode.OpenOrCreate, FileAccess.Write);
>         using(f)
>         {
>             foreach(byte b in imageData)
>             {
>                 f.WriteByte(b);
>             }
>         }
>
>
> Kenneth, GEOGRAF A/S wrote:
>   
>> I have worked some with the rendering service in .Net.
>> Is the byte array the size you expect?
>> Can you post a code snippet with the code you try to run?
>>
>> Regards, Kenneth, GEOGRAF A/S
>>
>>     
>
>   
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