// Load saved items from the Registry.
private void LoadFiles()
{
// Reload items from the registry.
for (int i = 0; i < _NumFiles; i++)
{
string file_name = (string)RegistryTools.GetSetting(
_ApplicationName, "FilePath" + i.ToString(), "");
if (file_name != "")
{
FileInfos.Add(new FileInfo(file_name));
}
}
}
// Save the current items in the Registry.
private void SaveFiles()
{
// Delete the saved entries.
for (int i = 0; i < _NumFiles; i++)
{
RegistryTools.DeleteSetting(_ApplicationName, "FilePath" + i.ToString());
}
// Save the current entries.
int index = 0;
foreach (FileInfo file_info in FileInfos)
{
RegistryTools.SaveSetting(_ApplicationName,
"FilePath" + index.ToString(), file_info.FullName);
index++;
}
}
public DialogResult OpenFileDialog()
{
string filename = "";
OpenFileDialog ofd = new OpenFileDialog
{
Title = "Open a GIS layer",
InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
};
var initialDirectory = RegistryTools.GetSetting("FAD3", "LastOpenedLayerDirectory", "");
if (initialDirectory.ToString().Length > 0)
{
ofd.InitialDirectory = initialDirectory.ToString();
}
ofd.Filter = "ESRI Shapefile (shp)|*.shp|" +
"KML files (kml)|*.kml|" +
"Georeferenced raster files (jpg, tiff,bmp)|*.jpg;*.tif;*.tiff;*.bmp|" +
"Other files |*.*)";
ofd.FilterIndex = 1;
DialogResult dr = ofd.ShowDialog();
if (dr == DialogResult.OK && ofd.FileName.Length > 0)
{
filename = ofd.FileName;
var(success, errMsg) = _mapLayersHandler.FileOpenHandler(filename);
if (!success)
{
MessageBox.Show(errMsg, "Error in opening file", MessageBoxButtons.OK, MessageBoxIcon.Information);
dr = DialogResult.Cancel;
}
}
return(dr);
}
/// <summary>
/// Handles the opening of map layer files from a file open dialog
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public (bool success, string errMsg) FileOpenHandler(string fileName, string layerName = "", bool reproject = false)
{
var success = false;
var errMsg = "";
var fm = new FileManager();
if (!fm.get_IsSupported(fileName))
{
errMsg = "Datasource isn't supported by MapWinGIS";
}
else
{
var obj = fm.Open(fileName, tkFileOpenStrategy.fosAutoDetect, null);
if (fm.LastOpenIsSuccess)
{
if (fm.LastOpenStrategy == tkFileOpenStrategy.fosVectorLayer)
{
var shapefile = obj as Shapefile;
success = shapefile != null;
if (success)
{
if (reproject)
{
int reprojectCount = 0;
var sf = shapefile.Reproject(MapControl.GeoProjection, reprojectCount);
if (reprojectCount > 0 || sf.NumShapes > 0)
{
shapefile = sf;
}
}
if (AddLayer(shapefile, layerName) < 0)
{
success = false;
errMsg = "Failed to add layer to map";
}
}
}
else if (fm.LastOpenStrategy == tkFileOpenStrategy.fosRgbImage)
{
var folderPath = Path.GetDirectoryName(fileName);
var file = Path.GetFileNameWithoutExtension(fileName);
var ext = Path.GetExtension(fileName);
var prjFile = $@"{folderPath}\{file}.prj";
var worldFile = $@"{folderPath}\{file}.{WorldfileExtension(ext)}";
if (File.Exists(prjFile) || File.Exists(worldFile))
{
var image = obj as MapWinGIS.Image;
success = image != null;
if (success)
{
if (AddLayer(image) < 0)
{
success = false;
errMsg = "Failed to add layer to map";
}
}
}
else
{
errMsg = $"{fileName} does not have a projection or world file";
}
}
else if (fm.LastOpenStrategy == tkFileOpenStrategy.fosDirectGrid ||
fm.LastOpenStrategy == tkFileOpenStrategy.fosProxyForGrid)
{
var grid = new MapWinGIS.Grid();
success = grid.Open(fileName, GridDataType.DoubleDataType, false, GridFileType.UseExtension, null);
if (success)
{
AddLayer(grid, Path.GetFileName(fileName), true, true);
}
}
}
else
{
errMsg = "Failed to open datasource: " + fm.get_ErrorMsg(fm.LastErrorCode);
}
}
if (success)
{
//save directory to the registry
RegistryTools.SaveSetting("FAD3", "LastOpenedLayerDirectory", Path.GetDirectoryName(fileName));
}
return(success, errMsg);
}
