ArcEngine 创建空间参考设置默认域
ISpatialReferenceFactory3 spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
outSR = spatialReferenceFactory.CreateSpatialReference(sr.FactoryCod);
ISpatialReferenceResolution spatialReferenceResolution = outSR as ISpatialReferenceResolution;
spatialReferenceResolution.ConstructFromHorizon();
spatialReferenceResolution.SetDefaultXYResolution();
ISpatialReferenceTolerance spatialReferenceTolerance = spatialReferenceResolution as ISpatialReferenceTolerance;
spatialReferenceTolerance.SetDefaultXYTolerance();