private IGeometry GetGeometryByCoor()
{
//直接获得坐标范围
double dblMinX = 0;
double dblMaxX = 0;
double dblMinY = 0;
double dblMaxY = 0;
double.TryParse(this.txtMinX.Text, out dblMinX);
double.TryParse(this.txtMaxX.Text, out dblMaxX);
double.TryParse(this.txtMinY.Text, out dblMinY);
double.TryParse(this.txtMaxY.Text, out dblMaxY);
//定义范围
IPointCollection pPntCollection = new PolygonClass();
object obj = System.Type.Missing;
IPoint pPnt1 = new PointClass();
pPnt1.PutCoords(dblMinX, dblMinY);
pPntCollection.AddPoint(pPnt1, ref obj, ref obj);
IPoint pPnt2 = new PointClass();
pPnt2.PutCoords(dblMaxX, dblMinY);
pPntCollection.AddPoint(pPnt2, ref obj, ref obj);
IPoint pPnt3 = new PointClass();
pPnt3.PutCoords(dblMaxX, dblMaxY);
pPntCollection.AddPoint(pPnt3, ref obj, ref obj);
IPoint pPnt4 = new PointClass();
pPnt4.PutCoords(dblMinX, dblMaxY);
pPntCollection.AddPoint(pPnt4, ref obj, ref obj);
//
IPolygon2 pPolygon2 = pPntCollection as IPolygon2;
pPolygon2.Close();
if (pPolygon2.IsEmpty)
{
return(null);
}
if (m_pMap != null && m_pMap.SpatialReference != null)
{
pPolygon2.Project(m_pMap.SpatialReference);
}
return(pPolygon2 as IGeometry);
}
