خطای اتصال به SQL server 2019

System.Data.SqlClient.SqlException

 HResult=0x80131904

 Message=A connection was successfully established with the server, but then an error occurred during the login process. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)

 Source=.Net SqlClient Data Provider

 StackTrace:

  at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling, SqlAuthenticationProviderManager sqlAuthProviderManager)

  at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)

  at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)

  at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)

  at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)

  at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)

  at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)

  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.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)

  at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)

  at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)

  at System.Data.SqlClient.SqlConnection.Open()

  at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)

  at System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior)

  at System.Data.Common.DbDataAdapter.Fill(DataTable dataTable)

  at MyContacts.Services.ContactsRepository.SelectAll() in C:\C#\MyContacts\Services\ContactsRepository.cs:line 37

  at MyContacts.Form1.Form1_Load(Object sender, EventArgs e) in C:\C#\MyContacts\Form1.cs:line 29

  at System.Windows.Forms.Form.OnLoad(EventArgs e)

  at System.Windows.Forms.Form.OnCreateControl()

  at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)

  at System.Windows.Forms.Control.CreateControl()

  at System.Windows.Forms.Control.WmShowWindow(Message& m)

  at System.Windows.Forms.Control.WndProc(Message& m)

  at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

  at System.Windows.Forms.ContainerControl.WndProc(Message& m)

  at System.Windows.Forms.Form.WmShowWindow(Message& m)

  at System.Windows.Forms.Form.WndProc(Message& m)

  at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

  at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

  at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)



Inner Exception 1:

Win32Exception: No process is on the other end of the pipe

من طبق جلسه 19 اطلاعات رو می خواهم از my sql server بارگیری کنم اما این ارور رو به من میده: