topic Re: Newbie question VB.NET + ArcGISRuntime in .NET Maps SDK Questions

Newbie question VB.NET + ArcGISRuntime

MarcHillman — Tue, 15 Mar 2016 03:59:28 GMT

I'm using MS VB 2015, and I have the Esri.ArcGISRuntime loaded as a reference.
How do I open an existing Shapefile? I just want to extract some data, but having real trouble getting started. Can't seem to find any tutorials for the simple stuff.
TIA

This is my code

Public Class Form1

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

End Sub

Private Async Sub OpenToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles OpenToolStripMenuItem.Click

Dim dialog As New OpenFileDialog()

With dialog

.Filter = "Shape|*.shp|All|*.*"

If DialogResult.OK = .ShowDialog Then

Dim myShapefileTable As Esri.ArcGISRuntime.Data.ShapefileTable = Await myShapefileTable.OpenAsync(dialog.FileName)

End If

End With

End Sub

End Class

but I get warning "BC42025 Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated."

Re: Newbie question VB.NET + ArcGISRuntime

AdrianWelsh — Tue, 15 Mar 2016 04:36:05 GMT

Hi Marc,

Can you give a little more description on what you are wanting to do? Are you wanting to load a shapefile into an ArcMap session? Are you wanting to just have the shapefile loaded into your code so that you can do stuff with it later?

I believe you have to call the FeatureLayer object in order to grab the shapefile. You're right that there are not many examples online. Take a look at this for some tidbits:

Code Example - FeatureLayerViaShapefile

(scroll to the bottom/middle and click on the VB.NET area to toggle it off of C#).

Or maybe you need to use the ShapefileWorkspaceFactory object to get the shapefile.

...new ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactoryClass()

There is an example here:

ArcObjects 10 .NET SDK Help

(scroll to the bottom or middle to get past the C# code)

Re: Newbie question VB.NET + ArcGISRuntime

MarcHillman — Tue, 15 Mar 2016 04:49:52 GMT

I have edited my post to show the code. It uses a fragment of the example you quote. Can't seem to get the OpenAsync method to work.
I just want to extract some shape data and export it as KML. No maps used.

Re: Newbie question VB.NET + ArcGISRuntime

MarcHillman — Tue, 15 Mar 2016 08:18:42 GMT

Fixed. Bit in red needs to be this.

Dim myShapefileTable As Esri.ArcGISRuntime.Data.ShapefileTable = Await Esri.ArcGISRuntime.Data.ShapefileTable.OpenAsync(dialog.FileName)