IGeometryDef Interface

Provides access to members that return information about the geometry definition.

Members

	Name	Description
	AvgNumPoints	The estimated average number of points per feature.
	GeometryType	The enumerated geometry type.
	GridCount	The number of spatial index grids.
	GridSize	The size of a spatial index grid.
	HasM	Indicates if the feature class has measure (M) values.
	HasZ	Indicates if the featureClass has Z values.
	SpatialReference	The spatial reference for the dataset.

IGeometryDef.AvgNumPoints Property

The estimated average number of points per feature.

Public ReadOnly Property AvgNumPoints As Integer

public int AvgNumPoints {get;}

IGeometryDef.GeometryType Property

The enumerated geometry type.

Public ReadOnly Property GeometryType As esriGeometryType

public esriGeometryType GeometryType {get;}

IGeometryDef.GridCount Property

The number of spatial index grids.

Public ReadOnly Property GridCount As Integer

public int GridCount {get;}

Remarks

Personal geodatabase feature classes only support one spatial index. Any additional indexes will be ignored. File and ArcSDE geodatabase feature classes support up to 3 spatial indexes.

IGeometryDef.GridSize Property

The size of a spatial index grid.

Public Function get_GridSize ( _
    ByVal Index As Integer _
) As Double

public double get_GridSize (
    int Index
);

Remarks

Personal geodatabase feature classes only support one spatial index. Any additional indexes will be ignored. File and ArcSDE geodatabase feature classes support up to 3 spatial indexes. The GridSize index is zero based with a maximum of index of 2.

If the value returned by this property is -2, it means the spatial index is an R-Tree index (e.g. Oracle Spatial, Informix, PostgreSQL).

IGeometryDef.HasM Property

Indicates if the feature class has measure (M) values.

Public ReadOnly Property HasM As Boolean

public bool HasM {get;}

IGeometryDef.HasZ Property

Indicates if the featureClass has Z values.

Public ReadOnly Property HasZ As Boolean

public bool HasZ {get;}

IGeometryDef.SpatialReference Property

The spatial reference for the dataset.

Public ReadOnly Property SpatialReference As ISpatialReference

public ISpatialReference SpatialReference {get;}

Classes that implement IGeometryDef

Classes	Description
GeometryDef	Esri Geometry Definition object.

Remarks

The IGeometryDefinterface provides read-only access to the GeometryDefproperties.

``The AvgNumPoints, GridCountand GridSizeproperties are all attributes of the geodatabase spatial index. Shapefiles will return 0 for GridCount.

The following code shows how to get the GeometryDef of a feature class:

// Get the GeometryDef from the feature class's shape field.

String shapeFieldName = featureClass.ShapeFieldName;

int shapeFieldIndex = featureClass.FindField(shapeFieldName);

IFields fields = featureClass.Fields;

IField shapeField = fields.get_Field(shapeFieldIndex);

IGeometryDef geometryDef = shapeField.GeometryDef;

The following code shows how to get the GeometryDef of a feature class:

' Get the GeometryDef from the feature class's shape field.

Dim shapeFieldName As String = featureClass.ShapeFieldName

Dim shapeFieldIndex As Integer = featureClass.FindField(shapeFieldName)

Dim fields As IFields = featureClass.Fields

Dim shapeField As IField = fields.Field(shapeFieldIndex)

Dim geometryDef As IGeometryDef = shapeField.GeometryDef