Drop Asynchronous Processing connection property + Improve connection string docs

doc/samples/RegisterCustomKeyStoreProvider_Example.cs

@@ -5,8 +5,8 @@
 
 class Program
 {
-    // Links a SqlColumnEncryptionKeyStoreProvider to some object that represents a user
-    static Dictionary<object, SqlColumnEncryptionKeyStoreProvider> providerByUser = new();
+    // Maps a SqlColumnEncryptionAzureKeyVaultProvider to some object that represents a user
+    static Dictionary<object, SqlColumnEncryptionAzureKeyVaultProvider> providerByUser = new();
 
     void ExecuteSelectQuery(object user, SqlConnection connection)
     {

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/Common/DbConnectionStringCommon.cs

@@ -890,7 +890,6 @@ internal static partial class DbConnectionStringKeywords
         // SqlClient
         internal const string ApplicationIntent = "Application Intent";
         internal const string ApplicationName = "Application Name";
-        internal const string AsynchronousProcessing = "Asynchronous Processing";
         internal const string AttachDBFilename = "AttachDbFilename";
         internal const string CommandTimeout = "Command Timeout";
         internal const string ConnectTimeout = "Connect Timeout";
@@ -939,9 +938,6 @@ internal static partial class DbConnectionStringKeywords
 
     internal static class DbConnectionStringSynonyms
     {
-        //internal const string AsynchronousProcessing = Async;
-        internal const string Async = "async";
-
         //internal const string ApplicationName        = APP;
         internal const string APP = "app";
 

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SqlConnectionString.cs

@@ -62,7 +62,6 @@ internal static class KEY
         {
             internal const string ApplicationIntent = "application intent";
             internal const string Application_Name = "application name";
-            internal const string AsynchronousProcessing = "asynchronous processing";
             internal const string AttachDBFilename = "attachdbfilename";
 #if NETCOREAPP
             internal const string PoolBlockingPeriod = "pool blocking period";
@@ -114,7 +113,6 @@ private static class SYNONYM
             internal const string APPLICATIONINTENT = "applicationintent";
             // application name
             internal const string APP = "app";
-            internal const string Async = "async";
             // attachDBFilename
             internal const string EXTENDED_PROPERTIES = "extended properties";
             internal const string INITIAL_FILE_NAME = "initial file name";
@@ -252,7 +250,6 @@ internal static class TRANSACTIONBINDING
 
         internal SqlConnectionString(string connectionString) : base(connectionString, GetParseSynonyms())
         {
-            ThrowUnsupportedIfKeywordSet(KEY.AsynchronousProcessing);
             ThrowUnsupportedIfKeywordSet(KEY.Connection_Reset);
             ThrowUnsupportedIfKeywordSet(KEY.Context_Connection);
 
@@ -660,7 +657,6 @@ internal static Dictionary<string, string> GetParseSynonyms()
                 {
                     { KEY.ApplicationIntent, KEY.ApplicationIntent },
                     { KEY.Application_Name, KEY.Application_Name },
-                    { KEY.AsynchronousProcessing, KEY.AsynchronousProcessing },
                     { KEY.AttachDBFilename, KEY.AttachDBFilename },
 #if NETCOREAPP
                     { KEY.PoolBlockingPeriod, KEY.PoolBlockingPeriod},
@@ -703,7 +699,6 @@ internal static Dictionary<string, string> GetParseSynonyms()
 
                     { SYNONYM.APP, KEY.Application_Name },
                     { SYNONYM.APPLICATIONINTENT, KEY.ApplicationIntent },
-                    { SYNONYM.Async, KEY.AsynchronousProcessing },
                     { SYNONYM.EXTENDED_PROPERTIES, KEY.AttachDBFilename },
                     { SYNONYM.INITIAL_FILE_NAME, KEY.AttachDBFilename },
                     { SYNONYM.CONNECTRETRYCOUNT, KEY.Connect_Retry_Count },

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SqlConnectionStringBuilder.cs

@@ -1234,12 +1234,9 @@ public override bool TryGetValue(string keyword, out object value)
         }
 
         private static readonly string[] s_notSupportedKeywords = new string[] {
-            DbConnectionStringKeywords.AsynchronousProcessing,
             DbConnectionStringKeywords.ConnectionReset,
             DbConnectionStringKeywords.ContextConnection,
             DbConnectionStringKeywords.TransactionBinding,
-
-            DbConnectionStringSynonyms.Async
         };
 
         private static readonly string[] s_notSupportedNetworkLibraryKeywords = new string[] {

src/Microsoft.Data.SqlClient/netfx/ref/Microsoft.Data.SqlClient.cs

@@ -932,11 +932,6 @@ public SqlConnectionStringBuilder(string connectionString) { }
         [System.ComponentModel.DisplayNameAttribute("Application Name")]
         [System.ComponentModel.RefreshPropertiesAttribute(System.ComponentModel.RefreshProperties.All)]
         public string ApplicationName { get { throw null; } set { } }
-        /// <include file='../../../../doc/snippets/Microsoft.Data.SqlClient/SqlConnectionStringBuilder.xml' path='docs/members[@name="SqlConnectionStringBuilder"]/AsynchronousProcessing/*'/>
-        [System.ComponentModel.DisplayNameAttribute("Asynchronous Processing")]
-        [System.ComponentModel.RefreshPropertiesAttribute(System.ComponentModel.RefreshProperties.All)]
-        [System.ObsoleteAttribute("AsynchronousProcessing has been deprecated.  SqlConnection will ignore the 'Asynchronous Processing' keyword and always allow asynchronous processing.")]
-        public bool AsynchronousProcessing { get { throw null; } set { } }
         /// <include file='../../../../doc/snippets/Microsoft.Data.SqlClient/SqlConnectionStringBuilder.xml' path='docs/members[@name="SqlConnectionStringBuilder"]/AttachDBFilename/*'/>
         [System.ComponentModel.DisplayNameAttribute("AttachDbFilename")]
         [System.ComponentModel.EditorAttribute("System.Windows.Forms.Design.FileNameEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/Common/DbConnectionStringCommon.cs

@@ -1178,7 +1178,6 @@ internal static class DbConnectionStringDefaults
         // SqlClient
         internal const ApplicationIntent ApplicationIntent = Microsoft.Data.SqlClient.ApplicationIntent.ReadWrite;
         internal const string ApplicationName = "Framework Microsoft SqlClient Data Provider";
-        internal const bool AsynchronousProcessing = false;
         internal const string AttachDBFilename = _emptyString;
         internal const int CommandTimeout = 30;
         internal const int ConnectTimeout = 15;
@@ -1262,7 +1261,6 @@ internal static class DbConnectionStringKeywords
         // SqlClient
         internal const string ApplicationIntent = "Application Intent";
         internal const string ApplicationName = "Application Name";
-        internal const string AsynchronousProcessing = "Asynchronous Processing";
         internal const string AttachDBFilename = "AttachDbFilename";
         internal const string ConnectTimeout = "Connect Timeout";
         internal const string CommandTimeout = "Command Timeout";
@@ -1310,9 +1308,6 @@ internal static class DbConnectionStringKeywords
 
     internal static class DbConnectionStringSynonyms
     {
-        //internal const string AsynchronousProcessing = Async;
-        internal const string Async = "async";
-
         //internal const string ApplicationName        = APP;
         internal const string APP = "app";
 

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlConnectionString.cs

@@ -71,7 +71,6 @@ internal static class KEY
         {
             internal const string ApplicationIntent = "application intent";
             internal const string Application_Name = "application name";
-            internal const string AsynchronousProcessing = "asynchronous processing";
             internal const string AttachDBFilename = "attachdbfilename";
             internal const string PoolBlockingPeriod = "pool blocking period";
             internal const string ColumnEncryptionSetting = "column encryption setting";
@@ -290,8 +289,6 @@ internal SqlConnectionString(string connectionString) : base(connectionString, G
 
             _integratedSecurity = ConvertValueToIntegratedSecurity();
 
-            ConvertValueToBoolean(KEY.AsynchronousProcessing, DEFAULT.Asynchronous); // while we don't use it anymore, we still need to verify it is true/false
-
             // SQLPT 41700: Ignore ResetConnection=False (still validate the keyword/value)
             _poolBlockingPeriod = ConvertValueToPoolBlockingPeriod();
             _connectionReset = ConvertValueToBoolean(KEY.Connection_Reset, DEFAULT.Connection_Reset);
@@ -796,7 +793,6 @@ internal static Hashtable GetParseSynonyms()
                 hash = new Hashtable(SqlConnectionStringBuilder.KeywordsCount + SynonymCount);
                 hash.Add(KEY.ApplicationIntent, KEY.ApplicationIntent);
                 hash.Add(KEY.Application_Name, KEY.Application_Name);
-                hash.Add(KEY.AsynchronousProcessing, KEY.AsynchronousProcessing);
                 hash.Add(KEY.AttachDBFilename, KEY.AttachDBFilename);
                 hash.Add(KEY.PoolBlockingPeriod, KEY.PoolBlockingPeriod);
                 hash.Add(KEY.Connect_Timeout, KEY.Connect_Timeout);
@@ -840,7 +836,6 @@ internal static Hashtable GetParseSynonyms()
 #endif
                 hash.Add(SYNONYM.APPLICATIONINTENT, KEY.ApplicationIntent);
                 hash.Add(SYNONYM.APP, KEY.Application_Name);
-                hash.Add(SYNONYM.Async, KEY.AsynchronousProcessing);
                 hash.Add(SYNONYM.EXTENDED_PROPERTIES, KEY.AttachDBFilename);
                 hash.Add(SYNONYM.INITIAL_FILE_NAME, KEY.AttachDBFilename);
                 hash.Add(SYNONYM.CONNECTION_TIMEOUT, KEY.Connect_Timeout);

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlConnectionStringBuilder.cs

@@ -37,7 +37,6 @@ private enum Keywords
             MinPoolSize,
             MaxPoolSize,
             PoolBlockingPeriod,
-            AsynchronousProcessing,
             ConnectionReset,
             MultipleActiveResultSets,
             Replication,
@@ -101,7 +100,6 @@ private enum Keywords
         private int _packetSize = DbConnectionStringDefaults.PacketSize;
         private int _connectRetryCount = DbConnectionStringDefaults.ConnectRetryCount;
         private int _connectRetryInterval = DbConnectionStringDefaults.ConnectRetryInterval;
-        private bool _asynchronousProcessing = DbConnectionStringDefaults.AsynchronousProcessing;
         private bool _connectionReset = DbConnectionStringDefaults.ConnectionReset;
         private bool _contextConnection = DbConnectionStringDefaults.ContextConnection;
         private bool _encrypt = DbConnectionStringDefaults.Encrypt;
@@ -131,7 +129,6 @@ static SqlConnectionStringBuilder()
             string[] validKeywords = new string[KeywordsCount];
             validKeywords[(int)Keywords.ApplicationIntent] = DbConnectionStringKeywords.ApplicationIntent;
             validKeywords[(int)Keywords.ApplicationName] = DbConnectionStringKeywords.ApplicationName;
-            validKeywords[(int)Keywords.AsynchronousProcessing] = DbConnectionStringKeywords.AsynchronousProcessing;
             validKeywords[(int)Keywords.AttachDBFilename] = DbConnectionStringKeywords.AttachDBFilename;
             validKeywords[(int)Keywords.PoolBlockingPeriod] = DbConnectionStringKeywords.PoolBlockingPeriod;
             validKeywords[(int)Keywords.ConnectionReset] = DbConnectionStringKeywords.ConnectionReset;
@@ -179,7 +176,6 @@ static SqlConnectionStringBuilder()
             Dictionary<string, Keywords> hash = new Dictionary<string, Keywords>(KeywordsCount + SqlConnectionString.SynonymCount, StringComparer.OrdinalIgnoreCase);
             hash.Add(DbConnectionStringKeywords.ApplicationIntent, Keywords.ApplicationIntent);
             hash.Add(DbConnectionStringKeywords.ApplicationName, Keywords.ApplicationName);
-            hash.Add(DbConnectionStringKeywords.AsynchronousProcessing, Keywords.AsynchronousProcessing);
             hash.Add(DbConnectionStringKeywords.AttachDBFilename, Keywords.AttachDBFilename);
             hash.Add(DbConnectionStringKeywords.PoolBlockingPeriod, Keywords.PoolBlockingPeriod);
             hash.Add(DbConnectionStringKeywords.ConnectTimeout, Keywords.ConnectTimeout);
@@ -225,7 +221,6 @@ static SqlConnectionStringBuilder()
             hash.Add(DbConnectionStringSynonyms.IPADDRESSPREFERENCE, Keywords.IPAddressPreference);
             hash.Add(DbConnectionStringSynonyms.APP, Keywords.ApplicationName);
             hash.Add(DbConnectionStringSynonyms.APPLICATIONINTENT, Keywords.ApplicationIntent);
-            hash.Add(DbConnectionStringSynonyms.Async, Keywords.AsynchronousProcessing);
             hash.Add(DbConnectionStringSynonyms.EXTENDEDPROPERTIES, Keywords.AttachDBFilename);
             hash.Add(DbConnectionStringSynonyms.INITIALFILENAME, Keywords.AttachDBFilename);
             hash.Add(DbConnectionStringSynonyms.CONNECTIONTIMEOUT, Keywords.ConnectTimeout);
@@ -370,11 +365,6 @@ public override object this[string keyword]
                             Certificate = ConvertToString(value);
                             break;
 #endif
-#pragma warning disable 618 // Obsolete AsynchronousProcessing
-                        case Keywords.AsynchronousProcessing:
-                            AsynchronousProcessing = ConvertToBoolean(value);
-                            break;
-#pragma warning restore 618
                         case Keywords.PoolBlockingPeriod:
                             PoolBlockingPeriod = ConvertToPoolBlockingPeriod(keyword, value);
                             break;
@@ -471,22 +461,6 @@ public string ApplicationName
             }
         }
 
-        /// <include file='..\..\..\..\..\..\..\doc\snippets\Microsoft.Data.SqlClient\SqlConnectionStringBuilder.xml' path='docs/members[@name="SqlConnectionStringBuilder"]/AsynchronousProcessing/*' />
-        [DisplayName(DbConnectionStringKeywords.AsynchronousProcessing)]
-        [Obsolete("AsynchronousProcessing has been deprecated. SqlConnection will ignore the 'Asynchronous Processing' keyword and always allow asynchronous processing.")]
-        [ResCategoryAttribute(StringsHelper.ResourceNames.DataCategory_Initialization)]
-        [ResDescriptionAttribute(StringsHelper.ResourceNames.DbConnectionString_AsynchronousProcessing)]
-        [RefreshPropertiesAttribute(RefreshProperties.All)]
-        public bool AsynchronousProcessing
-        {
-            get { return _asynchronousProcessing; }
-            set
-            {
-                SetValue(DbConnectionStringKeywords.AsynchronousProcessing, value);
-                _asynchronousProcessing = value;
-            }
-        }
-
         /// <include file='..\..\..\..\..\..\..\doc\snippets\Microsoft.Data.SqlClient\SqlConnectionStringBuilder.xml' path='docs/members[@name="SqlConnectionStringBuilder"]/AttachDBFilename/*' />
         [DisplayName(DbConnectionStringKeywords.AttachDBFilename)]
         [ResCategoryAttribute(StringsHelper.ResourceNames.DataCategory_Source)]
@@ -1311,10 +1285,6 @@ private object GetAt(Keywords index)
                     return this.ApplicationIntent;
                 case Keywords.ApplicationName:
                     return ApplicationName;
-#pragma warning disable 618 // Obsolete AsynchronousProcessing
-                case Keywords.AsynchronousProcessing:
-                    return AsynchronousProcessing;
-#pragma warning restore 618
                 case Keywords.AttachDBFilename:
                     return AttachDBFilename;
                 case Keywords.PoolBlockingPeriod:
@@ -1468,9 +1438,6 @@ private void Reset(Keywords index)
                 case Keywords.ApplicationName:
                     _applicationName = DbConnectionStringDefaults.ApplicationName;
                     break;
-                case Keywords.AsynchronousProcessing:
-                    _asynchronousProcessing = DbConnectionStringDefaults.AsynchronousProcessing;
-                    break;
                 case Keywords.AttachDBFilename:
                     _attachDBFilename = DbConnectionStringDefaults.AttachDBFilename;
                     break;

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlDependencyListener.cs

@@ -1536,9 +1536,6 @@ private static SqlConnectionContainerHashHelper GetHashHelper(string connectionS
             // This logic is done here to enable us to have the complete connection string now to be used
             // for tracing as we flow through the logic.
             connectionStringBuilder = new SqlConnectionStringBuilder(connectionString);
-#pragma warning disable CS0618 // Obsolete AsynchronousProcessing
-            connectionStringBuilder.AsynchronousProcessing = true;
-#pragma warning restore CS0618
             connectionStringBuilder.Pooling = false;
             connectionStringBuilder.Enlist = false;
             connectionStringBuilder.ConnectRetryCount = 0;

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlUtil.cs

@@ -530,10 +530,6 @@ static internal Exception ConnectionLockedForBcpEvent()
         {
             return ADP.InvalidOperation(StringsHelper.GetString(Strings.SQL_ConnectionLockedForBcpEvent));
         }
-        static internal Exception AsyncConnectionRequired()
-        {
-            return ADP.InvalidOperation(StringsHelper.GetString(Strings.SQL_AsyncConnectionRequired));
-        }
         static internal Exception FatalTimeout()
         {
             return ADP.InvalidOperation(StringsHelper.GetString(Strings.SQL_FatalTimeout));