Arcengine to judge geometry intersection by Irelationaloperator.relation

Irelationaloperator Interface:

1. Provides access to members that determine if a certain spatial relationship exists between.

Members Description

	Contains	Indicates if this geometry contains the other geometry. Whether the former contains the latter!
	Crosses	Indicates if the geometries intersect in a geometry of lesser dimension.
	Disjoint	Indicates if the geometries share no points in common. Negate This result to compute the Intersect relation.
	Equals	Indicates if the geometries is of the same type and define the same set of points in the plane.
	Overlaps	Indicates if the intersection of the geometries has the same dimension as one of the input geometries. Whether there is overlap between the former and the latter! Include relationships are not included!
	Relation	Indicates if the defined relationship exists.
	Touches	Indicates if the boundaries of the geometries intersect.
	Within	Indicates if this geometry are contained (is within) another geometry. Whether the former is inside the latter!

　　

There is no way to judge the intersection of geometry here.

Using relation to achieve intersects:relate (G1, G2, ' t******** ')

1 string " RELATE (G1, G2, ' t******** ') " ; 2  as irelationaloperator). Relation (ele. Geometry, relationdescription); 3 if (isintersects) 4 {5 selectedcount++; 6 pgraphicscontainerselect.selectelement (ele); 7 }

Arcengine to determine the intersection of geometry by irelationaloperator.relation