private void DoShowRasterInfo(MapInfo.Data.Table table)
{
// Get Raster info from the table.
MapInfo.Raster.RasterInfo rasterInfo = GetRasterInfo(table);
MessageBox.Show(this, String.Format("imageHeight = {0}\n imageWidth = {1}\n",
rasterInfo.Height,
rasterInfo.Width));
}
// Gets RasterInfo from a given table.
// Each raster table has exactly one associated raster image, and thus only one record.
// Reading that record with a data reader, we can get
// a FeatureGeometry - a bounding rectangle,
// a Style - the Raster style,
// a key
// a RasterInfo object.
private MapInfo.Raster.RasterInfo GetRasterInfo(Table table)
{
MapInfo.Raster.RasterInfo rasterInfo = null;
MIDataReader rdr = null;
string projectionlist = "obj, MI_Key, MI_Raster, MI_Style";
rdr = table.ExecuteReader(projectionlist);
string name;
string typename;
int n = rdr.FieldCount;
MapInfo.Styles.Style style;
MapInfo.Geometry.FeatureGeometry featureGeometry;
MapInfo.Data.Key key;
if (rdr.Read())
{
for (int i = 0; i < rdr.FieldCount; i++)
{
name = rdr.GetName(i);
typename = rdr.GetDataTypeName(i);
if (typename == "MapInfo.Styles.Style")
{
style = rdr.GetStyle(i);
}
else if (typename == "MapInfo.Geometry.FeatureGeometry")
{
featureGeometry = rdr.GetFeatureGeometry(i);
}
else if (typename == "MapInfo.Data.Key")
{
key = rdr.GetKey(i);
}
else if (typename == "MapInfo.Raster.RasterInfo")
{
rasterInfo = rdr.GetRasterInfo(i);
}
}
}
rdr.Close();
rdr.Dispose();
rdr = null;
return(rasterInfo);
}
