/// <summary>
/// Opens a dialog so the user can select an existing shapefile or file geodatabase
/// feature class.
/// </summary>
/// <param name="title">title for dialog</param>
/// <returns>dataset name object for the selected feature class or null </returns>
private IDatasetName SelectFeatureClass(string title, esriGeometryType geom)
{
try
{
IGxObjectFilter shpFilter = new GxFilterShapefilesClass();
IGxObjectFilter gdbFilter = new GxFilterFGDBFeatureClassesClass();
IGxDialog dlg = new GxDialogClass();
IGxObjectFilterCollection filters = (IGxObjectFilterCollection)dlg;
filters.AddFilter(shpFilter, false);
filters.AddFilter(gdbFilter, true);
dlg.Title = title;
IDatasetName dsName = null;
IEnumGxObject objects = null;
if (dlg.DoModalOpen(0, out objects))
{
IGPUtilities2 util = new GPUtilitiesClass();
string name = objects.Next().FullName;
dsName = (IDatasetName)util.CreateFeatureClassName(name);
IFeatureWorkspace ws = (IFeatureWorkspace)((IName)dsName.WorkspaceName).Open();
IFeatureClass fc = ws.OpenFeatureClass(System.IO.Path.GetFileName(name));
esriGeometryType shp = fc.ShapeType;
if (!(geom == esriGeometryType.esriGeometryAny &&
(shp == esriGeometryType.esriGeometryPoint ||
shp == esriGeometryType.esriGeometryPolyline ||
shp == esriGeometryType.esriGeometryPolygon)) &&
shp != geom)
{
ShowError("Wrong geometry type.");
dsName = null;
}
dsName = (IDatasetName)((IDataset)fc).FullName;
}
return(dsName);
}
catch (Exception ex)
{
ShowError(ex.Message);
return(null);
}
}
/// <summary> Shows dialog for saving data.</summary>
/// <param name="dialogTitle">The title of the dialog</param>
/// <returns> the path to the file to save </returns>
public static string ShowSaveDataDialog( string dialogTitle)
{
IGxObjectFilter shpFilter = new GxFilterShapefilesClass();
IGxObjectFilter gdbFilter = new GxFilterFGDBFeatureClassesClass();
List<IGxObjectFilter> gxFilterList = new List<IGxObjectFilter>(new IGxObjectFilter[] { gdbFilter, shpFilter});
return ShowSaveDataDialog(gxFilterList, dialogTitle);
}
