VS 2017 with Xamarin - UWP app throws File Not Found on System.Threading.Thread RRS feed

  • Question

  • Im getting the following exception when using System.Data.Sqlclient in a Xamarin based UWP app.

    Does anyone know how to fix this?

    System.IO.FileNotFoundException: Could not load file or assembly 'System.Threading.Thread, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified. File name: 'System.Threading.Thread, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource 1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.Open() at SS12.DataServices.SendScalar(String qString) at SS12.ItemsPage.CheckUserLogin(String User, String Pwd) at SS12.ItemsPage.<Login_Clicked>d__3.MoveNext()

    • Moved by Breeze Liu Wednesday, January 24, 2018 2:10 AM off topic
    Tuesday, January 23, 2018 9:56 AM

All replies

  • For help with Xamarin please post in the Xamarin forums at That said, System.Data.SqlClient is not part of .Net Standard 2.0 and is not available to UWP apps. See
    Tuesday, January 23, 2018 2:59 PM