I am getting an issue that I have seen posted before but the answers seem only applicable to ASP.NET MVC, whereas I am using WPF (with Entity Framework). 

My XAML designer in VS currently looks like this:

[![enter image description here](https://i.stack.imgur.com/OCuoh.jpg)](https://i.stack.imgur.com/OCuoh.jpg)

This is on a `UserControl` where the code is very simple:

```
<UserControl x:Class="door_system.Views.HomeView"
                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
                 xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                 xmlns:viewModels="clr-namespace:door_system.ViewModels"
                 mc:Ignorable="d" 
                 d:DesignHeight="300" d:DesignWidth="300">

    <UserControl.DataContext>
        <viewModels:HomeViewModel/>
    </UserControl.DataContext>

    <Grid>
        <DataGrid AutoGenerateColumns="False">
            <DataGridTextColumn Width="*"/>
            <DataGridTextColumn Width="*"/>
            <DataGridTextColumn Width="*"/>
        </DataGrid>
    </Grid>
</UserControl>

```

So my project setup looks like so:

[![enter image description here](https://i.stack.imgur.com/FqMwB.jpg)](https://i.stack.imgur.com/FqMwB.jpg)

There is only one `app.config` file that definitely contains the connection string:

```
<connectionStrings>
  <add name="MicrotrakContext" connectionString="metadata=res://*/Models.MicrotrakModel.csdl|res://*/Models.MicrotrakModel.ssdl|res://*/Models.MicrotrakModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=*******;initial catalog=MicrotrakEvolution;user id=******;password=********;multipleactiveresultsets=True;application name=EntityFramework&quot;" providerName="System.Data.EntityClient" />
</connectionStrings>

```

When I build the project there are no errors. When I run the project it performs without error too. Is this a bug I have discovered?

Aside from name changes I have two other projects that are setup in almost exactly the same way, both build and run without issue.

The Task calling the Context in `HomeViewModel`:

```
private Task LoadTransactionsTask()
{
    return Task.Run(() =>
    {
        using (var context = new MicrotrakContext())
        {
            AllTransactions = new ObservableCollection<Transaction>(
                (from record in context.Transactions
                    select record)
                .Where(x => x.CreationTime >= DateTime.Today)
                .ToList());
        }
    });
}

```