public MapInfoProvider(string tabpath)
{
try
{
m_layer = new Layer(tabpath);
m_filename = tabpath;
BuildTree();
}
catch (Exception ex)
{
throw new Exception("Couldn't load file " + tabpath + "\nError: " + ex.Message);
}
}
internal FeaturesEnum(IObjectProvider objProvider, Layer layer) : base(objProvider) {
this.layer = layer;
}
protected internal Features(Layer layer) :
base(MiApi.mitab_c_get_feature_count(layer.Handle)) {
this.Layer = layer;
}
/// <summary>
/// Override this to support descendants of the Field class.
/// </summary>
/// <returns>A Field, with the given index, belonging to the given Layer</returns>
protected internal virtual Field CreateField(Layer layer, int index) {
return new Field(layer, index);
}
protected internal Feature(Layer layer, int featureId) {
this.Id = featureId;
this.Layer = layer;
this.Handle = MiApi.mitab_c_read_feature(layer.Handle, featureId);
this.Type = MiApi.mitab_c_get_type(Handle);
this.Parts = CreateParts(this);
}
protected internal Fields(Layer layer):base(MiApi.mitab_c_get_field_count(layer.Handle)) {
fields = new Field[Count];
for (int i=0; i<Count; i++)
fields[i] = CreateField(layer, i);
}
protected internal Field(Layer layer, int i) {
this.Layer = layer;
this.Index = i;
this.Name = MiApi.mitab_c_get_field_name(layer.Handle, i);
this.Type = MiApi.mitab_c_get_field_type(layer.Handle, i);
this.Precision = (short) MiApi.mitab_c_get_field_precision(layer.Handle, i);
this.Width = MiApi.mitab_c_get_field_width(layer.Handle, i);
}
protected internal Features(Layer layer) : base(MiApi.mitab_c_get_feature_count(layer.Handle))
{
this.Layer = layer;
}
internal FeaturesEnum(IObjectProvider objProvider, Layer layer) : base(objProvider)
{
this.layer = layer;
}
/// <summary>
/// Override this to support descendants of the Field class.
/// </summary>
/// <returns>A Field, with the given index, belonging to the given Layer</returns>
protected internal virtual Field CreateField(Layer layer, int index)
{
return(new Field(layer, index));
}