private bool OpenShapeFile()
{
System.Windows.Forms.OpenFileDialog ofd = new System.Windows.Forms.OpenFileDialog();
ofd.Title = App.Current.FindResource("tbSelectSHPFile").ToString();
ofd.RestoreDirectory = true;
ofd.Multiselect = false;
ofd.Filter = "shape file (*.shp)|*.shp";
if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
string shpFileName = ofd.FileName;
string dbfFilename = Path.ChangeExtension(shpFileName, ".dbf");
if (!ofd.CheckFileExists || !File.Exists(dbfFilename))
{
MessageBox.Show(App.Current.FindResource("msgSHPError").ToString(), App.Current.FindResource("msgError").ToString(), MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
try
{
FileInfo fiSHP = new FileInfo(shpFileName);
FileInfo fiDBF = new FileInfo(dbfFilename);
ShapeFile shapeFile = new ShapeFile();
shapeFile.Read(fiSHP, fiDBF);
if (shapeFile.FileHeader.ShapeType != 5)
{
throw new Exception(App.Current.FindResource("msgSHPTypeError").ToString());
}
_graphicsLayer.ClearGraphics();
Envelope env = new Envelope();
foreach (ShapeFileRecord record in shapeFile.Records)
{
Graphic graphic = record.ToGraphic();
//if the coordinates is wgs 84,try to convert to 3857
if (Math.Abs(record.Points[0].X) < 300 || Math.Abs(record.Points[0].Y) < 300)
{
graphic.Geometry = _webMercator.FromGeographic(graphic.Geometry);
}
if (graphic != null)
{
graphic.Symbol = new SimpleFillSymbol()
{
BorderBrush = new SolidColorBrush(Colors.Red),
Fill = new SolidColorBrush(Color.FromArgb(100, 255, 0, 0))
}
}
;
_graphicsLayer.Graphics.Add(graphic);
env = env.Union(graphic.Geometry.Extent);
}
DownloadExtent = _webMercator.ToGeographic(env).Extent;
_downloadPolygon = AppUtility.ConvertEsriPolygonToPBSPolygon(AppUtility.UnionEsriPolygon(_graphicsLayer.Graphics));
return(true);
}
catch (Exception e)
{
MessageBox.Show(e.Message, App.Current.FindResource("msgError").ToString(), MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
return(false);
}