topic Re: Open a feature class in ArcGIS Pro SDK Questions

Open a feature class

JeromeHaaland — Fri, 09 Sep 2022 01:55:48 GMT

The GetBoundary() method below returns the string path to a feature class.

How is the string path to the feature class used instead of the code on lines 25 and 26?

protected override async void OnClick() { string extent = await Extent(); MessageBox.Show(extent); static async Task<string> Extent() { string results = ""; static string GetBoundary() { OpenItemDialog item = new OpenItemDialog(); item.Title = "Select the Boundary"; item.MultiSelect = false; item.ShowDialog(); return item.Items.First().Path; } await QueuedTask.Run(() => { // Want to use this path name to create a feature class string boundary = GetBoundary(); // This is fine... except how are the 2 lines below made to run from an OpenItemDialog Geodatabase gdb = new Geodatabase(new FileGeodatabaseConnectionPath(new Uri("C:\\Temp\\Learn.gdb"))); using (FeatureClass fc = gdb.OpenDataset<FeatureClass>("CSS_1_BoundaryBuffer")) { string xMax = fc.GetExtent().XMax.ToString(); string xMin = fc.GetExtent().XMin.ToString(); string yMax = fc.GetExtent().YMax.ToString(); string yMin = fc.GetExtent().YMin.ToString(); results = $"{xMin} {yMin} {xMax} {yMax}"; } }); return results; } }

Re: Open a feature class

GKmieliauskas — Fri, 09 Sep 2022 05:38:41 GMT

Hi,

Your code structure isn't correct. You need to separate UI and work tasks first. I would do it like that:

static string GetBoundary() { OpenItemDialog item = new OpenItemDialog(); item.Title = "Select the Boundary"; item.MultiSelect = false; item.ShowDialog(); return item.Items.First().Path; } static async Task<string> Extent(string fcPath) { string results = ""; await QueuedTask.Run(() => { // Want to use this path name to create a feature class string boundary = GetBoundary(); // This is fine... except how are the 2 lines below made to run from an OpenItemDialog Geodatabase gdb = new Geodatabase(new FileGeodatabaseConnectionPath(new Uri(Path.GetDirectoryName(fcPath)))); using (FeatureClass fc = gdb.OpenDataset<FeatureClass>(Path.GetFileName(fcPath))) { string xMax = fc.GetExtent().XMax.ToString(); string xMin = fc.GetExtent().XMin.ToString(); string yMax = fc.GetExtent().YMax.ToString(); string yMin = fc.GetExtent().YMin.ToString(); results = $"{xMin} {yMin} {xMax} {yMax}"; } }); return results; } protected override async void OnClick() { string fcPath = GetBoundary(); string extent = await Extent(fcPath); MessageBox.Show(extent); }

I have added fcPath parameter for your Extent method. fcPath parameter value separated by Path methods to Directory and File name.

I would recommend to use FeatureClass filter in your GetBoundary method.

https://github.com/Esri/arcgis-pro-sdk/wiki/ProSnippets-Browse-Dialog-Filters

Re: Open a feature class

JeromeHaaland — Fri, 09 Sep 2022 17:18:37 GMT

Excellent Reply... Worked well.

FYI for others, the Path.GetDirectoryName() needs the "using System.IO;" statement