protected override Collection <Layer> GetLayersCore(GetLayersParameters getLayersParameters)
{
Collection <Layer> layers = base.GetLayersCore(getLayersParameters);
foreach (var uri in getLayersParameters.LayerUris)
{
WorldFileInfo wInfo = GetWorldFileInfo(uri);
RasterLayer layer = GetRasterLayer(uri, wInfo);
if (layer != null)
{
layer.UpperThreshold = double.MaxValue;
layer.LowerThreshold = 0d;
layer.Name = Path.GetFileNameWithoutExtension(uri.LocalPath);
layer.Open();
if (!layer.HasProjectionText)
{
string proj4PathFileName = Path.ChangeExtension(uri.LocalPath, "prj");
string proj4Parameter = LayerPluginHelper.GetProj4ProjectionParameter(proj4PathFileName);
if (!string.IsNullOrEmpty(proj4Parameter))
{
layer.InitializeProj4Projection(proj4Parameter);
}
}
else
{
string proj = layer.GetProjectionText().Trim();
if (!string.IsNullOrEmpty(proj))
{
layer.InitializeProj4Projection(proj);
}
}
layer.Close();
layers.Add(layer);
}
}
return(layers);
}
public static bool ValidateRasterLayer(RasterLayer rasterLayer)
{
bool isValidate = true;
try
{
rasterLayer.Open();
}
catch (Exception)
{
isValidate = false;
}
finally
{
if (rasterLayer.IsOpen)
{
rasterLayer.Close();
}
}
return(isValidate);
}