Hello I'm using MapGuide v.2.5.2.7949 in an ASP.NET Application. I'm facing an out of memory exception throwed by this function (RenderMap):
http://cmnmaps.ca/mapguide/help/webapi/de/dbd/class_mg_rendering_service_a7767628fe456bfd90e9010a19ed83e04.htm#a7767628fe456bfd90e9010a19ed83e04 In my App I'm trying to print the map to a PNG format and if I set 600 DPI I get the exception. What's wrong here? If I set lower DPI, like 300 it works fine. My Code: <CLSCompliant(False)> Public Sub InitializeMapImage(ByRef pr_objMapGuide As MapGuide, ByVal pv_Plotbox As MgEnvelope, ByVal pv_dblPageWidth As Double, ByVal pv_dblPageHeight As Double, Optional ByVal pv_strFormat As String = "PNG") Try Dim Map As MgMap = pr_objMapGuide.Map Dim selection As New MgSelection() selection.Save(pr_objMapGuide.ResourceService, Map.Name) selection.Open(pr_objMapGuide.ResourceService, Map.Name) Dim SelXML As String = selection.ToXml Dim white As New MgColor(255, 255, 255) Dim pxMapWidth As Double = (pv_dblPageWidth / inch) * DPI Dim pxMapHeight As Double = (pv_dblPageHeight / inch) * DPI Dim byteReader As MgByteReader = pr_objMapGuide.RenderingService.RenderMap(Map, selection, pv_Plotbox, pxMapWidth, pxMapHeight, white, "PNG") Dim memBuff As New IO.MemoryStream Dim byteBuffer(1024 ^ 2) As Byte Dim intBytes As Integer = byteReader.Read(byteBuffer, 1024 ^ 2) While intBytes > 0 memBuff.Write(byteBuffer, 0, intBytes) intBytes = byteReader.Read(byteBuffer, 1024 ^ 2) End While Dim BitMap As New Drawing.Bitmap(memBuff) BitMap.SetResolution(Convert.ToSingle(DPI), Convert.ToSingle(DPI)) Dim imgMap As Image = BitMap m_Map = imgMap Catch exRange As MgOutOfRangeException Throw New Exception("", exRange) Catch exMemory As MgOutOfMemoryException Throw New Exception("", exMemory) Catch ex As Exception Throw New Exception("", ex) End Try End Sub -- Sent from: http://osgeo-org.1560.x6.nabble.com/MapGuide-Users-f4182607.html _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapguide-users