ITGIS_LayerVector.FindFirst method

DK11 for ActiveX | TatukGIS_XDK11.ITGIS_LayerVector.FindFirst | Methods | Properties

Finds the first shape in layer. Will use RTree if available.

Available also on: Delphi | .NET | Java | Python.

// C#
public ITGIS_Shape FindFirst();

' VisualBasic
Public Function FindFirst() As ITGIS_Shape

// Oxygene
public
  function FindFirst : ITGIS_Shape;

See: FindNext

Use this method to find to the first shape in the layer matching given criteria. Using _query param we can narrow the result of the shape searching down to the minimum. This should speed up our process of locating a desired shape.

To locate a shape, simply choose an existing layer and use FindFirst method of with a proper extent and a SQL query as a WHERE clause.

• Multiselect sample
• SelectByShape sample