Public Overloads Function Identify( _
   ByVal point As Point, _
   ByVal expandPercentage As Double _
) As FeatureTable

Visual Basic (Usage)	Copy Code
Dim instance As FeatureLayer Dim point As Point Dim expandPercentage As Double Dim value As FeatureTable   value = instance.Identify(point, expandPercentage)

public FeatureTable Identify( 
   Point point,
   double expandPercentage
)

Parameters

point

The map-point on which to identify features.

expandPercentage

Percentage-based tolerance to determine the size of the envelope created around the map-point.

Return Value

This is a convenient way to identify features near a point on the map. It is similar to using a Query method with a point in the filter of the query parameters.

The point parameter must have coordinates in map (real-world) coordinates. If you have pixel coordinates instead of map coordinates, you can use Identify(int, int, double), which takes pixel coordinates. Alternatively, you can use Point.ToMapPoint to convert the screen coordinates to map coordinates.

The expandPercentage is the percentage of the current map extent. An envelope of the specified size is constructed centered on the input point. The expandPercentage value must be greater than zero, and no greater than 100.

This method returns a FeatureTable. Since a FeatureTable inherits from System.Data.DataTable, it can be used as the data source for data-bound controls that accept a DataTable, such as the GridView control or DetailsView control. This can make it simple to display the results of a query or identify operation.

If no features are found, the method returns a DataTable with no rows. Check the DataTable's Rows.Count property to see whether any features are found.

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference