[branches/1.0] Fixes issue with converting to Uint32 Work Item: 35056
[branches/1.0] Fixes issue with converting to Uint32
Work Item: 35056


git-tfs-id: [https://tfs.codeplex.com/tfs/TFS01]$/SharpMap/Branches/1.0;C105481

nhvu1988/SharpMap,SharpMap/SharpMap,SharpMap/SharpMap,nhvu1988/SharpMap