判断IFeatureClass图形是否含有Z值信息，若有为IPoint赋Z值

判断IFeatureClass图形是否含有Z值信息

 IFeatureClass featureClass = this.pLayer.FeatureClass;
  string shapeFieldName = featureClass.ShapeFieldName;
  if (featureClass.Fields.get_Field(featureClass.FindField(shapeFieldName)).GeometryDef.HasZ)
 {
         this.hasZ = true;
 }

若有为IPoint赋Z值：

IPoint point = new PointClass();
point.X = num;
point.Y = num2;
if (this.hasZ)
{
       IZAware aware = point as IZAware;
       aware.ZAware = true;
       double num3 = Convert.ToDouble(this.Z_numericUpDown.Text);
       point.Z = num3;
}