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;

}