Gets or sets a filter string applied to the layer's RecordSource. When KML data is loaded into the layer, for each item being loaded this filter is applied to the layer data, and item expressions (ItemTrackExpr, ItemVisibleExpr, ItemStyleExpr) are evaluated in the context of the first data row matching the filter.

NOTE: this only works if a custom RecordSource is specified for the KML layer.

'宣言
 
Public Property ItemFilterExpr As System.String

public System.string ItemFilterExpr {get; set;}