Lots of documentation fixes/additions.

Dapper.Contrib/SqlMapperExtensions.Async.cs

@@ -306,11 +306,35 @@ public static partial class SqlMapperExtensions
 
 public partial interface ISqlAdapter
 {
+    /// <summary>
+    /// Inserts <paramref name="entityToInsert"/> into the database, returning the Id of the row created.
+    /// </summary>
+    /// <param name="connection">The connection to use.</param>
+    /// <param name="transaction">The transaction to use.</param>
+    /// <param name="commandTimeout">The command timeout to use.</param>
+    /// <param name="tableName">The table to insert into.</param>
+    /// <param name="columnList">The columns to set with this insert.</param>
+    /// <param name="parameterList">The parameters to set for this insert.</param>
+    /// <param name="keyProperties">The key columns in this table.</param>
+    /// <param name="entityToInsert">The entity to insert.</param>
+    /// <returns>The Id of the row created.</returns>
     Task<int> InsertAsync(IDbConnection connection, IDbTransaction transaction, int? commandTimeout, String tableName, string columnList, string parameterList, IEnumerable<PropertyInfo> keyProperties, object entityToInsert);
 }
 
 public partial class SqlServerAdapter
 {
+    /// <summary>
+    /// Inserts <paramref name="entityToInsert"/> into the database, returning the Id of the row created.
+    /// </summary>
+    /// <param name="connection">The connection to use.</param>
+    /// <param name="transaction">The transaction to use.</param>
+    /// <param name="commandTimeout">The command timeout to use.</param>
+    /// <param name="tableName">The table to insert into.</param>
+    /// <param name="columnList">The columns to set with this insert.</param>
+    /// <param name="parameterList">The parameters to set for this insert.</param>
+    /// <param name="keyProperties">The key columns in this table.</param>
+    /// <param name="entityToInsert">The entity to insert.</param>
+    /// <returns>The Id of the row created.</returns>
     public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction transaction, int? commandTimeout, String tableName, string columnList, string parameterList, IEnumerable<PropertyInfo> keyProperties, object entityToInsert)
     {
         var cmd = $"INSERT INTO {tableName} ({columnList}) values ({parameterList}); SELECT SCOPE_IDENTITY() id";
@@ -332,6 +356,18 @@ public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction tran
 
 public partial class SqlCeServerAdapter
 {
+    /// <summary>
+    /// Inserts <paramref name="entityToInsert"/> into the database, returning the Id of the row created.
+    /// </summary>
+    /// <param name="connection">The connection to use.</param>
+    /// <param name="transaction">The transaction to use.</param>
+    /// <param name="commandTimeout">The command timeout to use.</param>
+    /// <param name="tableName">The table to insert into.</param>
+    /// <param name="columnList">The columns to set with this insert.</param>
+    /// <param name="parameterList">The parameters to set for this insert.</param>
+    /// <param name="keyProperties">The key columns in this table.</param>
+    /// <param name="entityToInsert">The entity to insert.</param>
+    /// <returns>The Id of the row created.</returns>
     public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction transaction, int? commandTimeout, string tableName, string columnList, string parameterList, IEnumerable<PropertyInfo> keyProperties, object entityToInsert)
     {
         var cmd = $"INSERT INTO {tableName} ({columnList}) VALUES ({parameterList})";
@@ -353,6 +389,18 @@ public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction tran
 
 public partial class MySqlAdapter
 {
+    /// <summary>
+    /// Inserts <paramref name="entityToInsert"/> into the database, returning the Id of the row created.
+    /// </summary>
+    /// <param name="connection">The connection to use.</param>
+    /// <param name="transaction">The transaction to use.</param>
+    /// <param name="commandTimeout">The command timeout to use.</param>
+    /// <param name="tableName">The table to insert into.</param>
+    /// <param name="columnList">The columns to set with this insert.</param>
+    /// <param name="parameterList">The parameters to set for this insert.</param>
+    /// <param name="keyProperties">The key columns in this table.</param>
+    /// <param name="entityToInsert">The entity to insert.</param>
+    /// <returns>The Id of the row created.</returns>
     public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction transaction, int? commandTimeout, string tableName,
         string columnList, string parameterList, IEnumerable<PropertyInfo> keyProperties, object entityToInsert)
     {
@@ -374,6 +422,18 @@ public partial class MySqlAdapter
 
 public partial class PostgresAdapter
 {
+    /// <summary>
+    /// Inserts <paramref name="entityToInsert"/> into the database, returning the Id of the row created.
+    /// </summary>
+    /// <param name="connection">The connection to use.</param>
+    /// <param name="transaction">The transaction to use.</param>
+    /// <param name="commandTimeout">The command timeout to use.</param>
+    /// <param name="tableName">The table to insert into.</param>
+    /// <param name="columnList">The columns to set with this insert.</param>
+    /// <param name="parameterList">The parameters to set for this insert.</param>
+    /// <param name="keyProperties">The key columns in this table.</param>
+    /// <param name="entityToInsert">The entity to insert.</param>
+    /// <returns>The Id of the row created.</returns>
     public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction transaction, int? commandTimeout, string tableName, string columnList, string parameterList, IEnumerable<PropertyInfo> keyProperties, object entityToInsert)
     {
         var sb = new StringBuilder();
@@ -414,6 +474,18 @@ public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction tran
 
 public partial class SQLiteAdapter
 {
+    /// <summary>
+    /// Inserts <paramref name="entityToInsert"/> into the database, returning the Id of the row created.
+    /// </summary>
+    /// <param name="connection">The connection to use.</param>
+    /// <param name="transaction">The transaction to use.</param>
+    /// <param name="commandTimeout">The command timeout to use.</param>
+    /// <param name="tableName">The table to insert into.</param>
+    /// <param name="columnList">The columns to set with this insert.</param>
+    /// <param name="parameterList">The parameters to set for this insert.</param>
+    /// <param name="keyProperties">The key columns in this table.</param>
+    /// <param name="entityToInsert">The entity to insert.</param>
+    /// <returns>The Id of the row created.</returns>
     public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction transaction, int? commandTimeout, string tableName, string columnList, string parameterList, IEnumerable<PropertyInfo> keyProperties, object entityToInsert)
     {
         var cmd = $"INSERT INTO {tableName} ({columnList}) VALUES ({parameterList}); SELECT last_insert_rowid() id";
@@ -432,6 +504,18 @@ public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction tran
 
 public partial class FbAdapter
 {
+    /// <summary>
+    /// Inserts <paramref name="entityToInsert"/> into the database, returning the Id of the row created.
+    /// </summary>
+    /// <param name="connection">The connection to use.</param>
+    /// <param name="transaction">The transaction to use.</param>
+    /// <param name="commandTimeout">The command timeout to use.</param>
+    /// <param name="tableName">The table to insert into.</param>
+    /// <param name="columnList">The columns to set with this insert.</param>
+    /// <param name="parameterList">The parameters to set for this insert.</param>
+    /// <param name="keyProperties">The key columns in this table.</param>
+    /// <param name="entityToInsert">The entity to insert.</param>
+    /// <returns>The Id of the row created.</returns>
     public async Task<int> InsertAsync(IDbConnection connection, IDbTransaction transaction, int? commandTimeout, string tableName, string columnList, string parameterList, IEnumerable<PropertyInfo> keyProperties, object entityToInsert)
     {
         var cmd = $"insert into {tableName} ({columnList}) values ({parameterList})";

Dapper.Rainbow/Database.Async.cs

@@ -45,7 +45,7 @@ public Task<int> UpdateAsync(TId id, dynamic data)
                 builder.AppendLine(string.Join(",", paramNames.Where(n => n != "Id").Select(p => p + "= @" + p)));
                 builder.Append("where Id = @Id");
 
-                DynamicParameters parameters = new DynamicParameters(data);
+                var parameters = new DynamicParameters(data);
                 parameters.Add("Id", id);
 
                 return database.ExecuteAsync(builder.ToString(), parameters);
@@ -62,61 +62,115 @@ public async Task<bool> DeleteAsync(TId id)
             }
 
             /// <summary>
-            /// Grab a record with a particular Id from the DB asynchronously
+            /// Asynchronously gets a record with a particular Id from the DB 
             /// </summary>
-            /// <param name="id"></param>
-            /// <returns></returns>
-            public async Task<T> GetAsync(TId id)
+            /// <param name="id">The primary key of the table to fetch.</param>
+            /// <returns>The record with the specified Id.</returns>
+            public Task<T> GetAsync(TId id)
             {
-                return (await database.QueryAsync<T>("select * from " + TableName + " where Id = @id", new { id }).ConfigureAwait(false)).FirstOrDefault();
+                return database.QueryFirstOrDefaultAsync<T>("select * from " + TableName + " where Id = @id", new { id });
             }
 
-            public virtual async Task<T> FirstAsync()
+            /// <summary>
+            /// Asynchronously gets the first row from this table (order determined by the database provider).
+            /// </summary>
+            /// <returns>Data from the first table row.</returns>
+            public virtual Task<T> FirstAsync()
             {
-                return (await database.QueryAsync<T>("select top 1 * from " + TableName).ConfigureAwait(false)).FirstOrDefault();
+                return database.QueryFirstOrDefaultAsync<T>("select top 1 * from " + TableName);
             }
 
+            /// <summary>
+            /// Asynchronously gets the all rows from this table.
+            /// </summary>
+            /// <returns>Data from all table rows.</returns>
             public Task<IEnumerable<T>> AllAsync()
             {
                 return database.QueryAsync<T>("select * from " + TableName);
             }
         }
 
+        /// <summary>
+        /// Asynchronously executes SQL against the current database.
+        /// </summary>
+        /// <param name="sql">The SQL to execute.</param>
+        /// <param name="param">The parameters to use.</param>
+        /// <returns>The number of rows affected.</returns>
         public Task<int> ExecuteAsync(string sql, dynamic param = null)
         {
             return _connection.ExecuteAsync(sql, param as object, _transaction, this._commandTimeout);
         }
 
+        /// <summary>
+        /// Asynchronously queries the current database.
+        /// </summary>
+        /// <typeparam name="T">The type to return.</typeparam>
+        /// <param name="sql">The SQL to execute.</param>
+        /// <param name="param">The parameters to use.</param>
+        /// <returns>An enumerable of <typeparamref name="T"/> for the rows fetched.</returns>
         public Task<IEnumerable<T>> QueryAsync<T>(string sql, dynamic param = null)
         {
             return _connection.QueryAsync<T>(sql, param as object, _transaction, _commandTimeout);
         }
 
+        /// <summary>
+        /// Asynchronously queries the current database for a single record.
+        /// </summary>
+        /// <typeparam name="T">The type to return.</typeparam>
+        /// <param name="sql">The SQL to execute.</param>
+        /// <param name="param">The parameters to use.</param>
+        /// <returns>An enumerable of <typeparamref name="T"/> for the rows fetched.</returns>
+        public Task<T> QueryFirstOrDefaultAsync<T>(string sql, dynamic param = null)
+        {
+            return _connection.QueryFirstOrDefaultAsync<T>(sql, param as object, _transaction, _commandTimeout);
+        }
+
+        /// <summary>
+        /// Perform an asynchronous multi mapping query with 2 input parameters
+        /// </summary>
         public Task<IEnumerable<TReturn>> QueryAsync<TFirst, TSecond, TReturn>(string sql, Func<TFirst, TSecond, TReturn> map, dynamic param = null, IDbTransaction transaction = null, bool buffered = true, string splitOn = "Id", int? commandTimeout = null)
         {
-            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn);
+            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn, commandTimeout);
         }
 
+        /// <summary>
+        /// Perform an asynchronous multi mapping query with 3 input parameters
+        /// </summary>
         public Task<IEnumerable<TReturn>> QueryAsync<TFirst, TSecond, TThird, TReturn>(string sql, Func<TFirst, TSecond, TThird, TReturn> map, dynamic param = null, IDbTransaction transaction = null, bool buffered = true, string splitOn = "Id", int? commandTimeout = null)
         {
-            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn);
+            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn, commandTimeout);
         }
 
+        /// <summary>
+        /// Perform an asynchronous multi mapping query with 4 input parameters
+        /// </summary>
         public Task<IEnumerable<TReturn>> QueryAsync<TFirst, TSecond, TThird, TFourth, TReturn>(string sql, Func<TFirst, TSecond, TThird, TFourth, TReturn> map, dynamic param = null, IDbTransaction transaction = null, bool buffered = true, string splitOn = "Id", int? commandTimeout = null)
         {
-            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn);
+            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn, commandTimeout);
         }
 
+        /// <summary>
+        /// Perform an asynchronous multi mapping query with 5 input parameters
+        /// </summary>
         public Task<IEnumerable<TReturn>> QueryAsync<TFirst, TSecond, TThird, TFourth, TFifth, TReturn>(string sql, Func<TFirst, TSecond, TThird, TFourth, TFifth, TReturn> map, dynamic param = null, IDbTransaction transaction = null, bool buffered = true, string splitOn = "Id", int? commandTimeout = null)
         {
-            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn);
+            return _connection.QueryAsync(sql, map, param as object, transaction, buffered, splitOn, commandTimeout);
         }
 
+        /// <summary>
+        /// Execute a query asynchronously using .NET 4.5 Task.
+        /// </summary>
+        /// <param name="sql">The SQL to execute.</param>
+        /// <param name="param">The parameters to use.</param>
+        /// <remarks>Note: each row can be accessed via "dynamic", or by casting to an IDictionary&lt;string,object&gt;</remarks>
         public Task<IEnumerable<dynamic>> QueryAsync(string sql, dynamic param = null)
         {
             return _connection.QueryAsync(sql, param as object, _transaction);
         }
 
+        /// <summary>
+        /// Execute a command that returns multiple result sets, and access each in turn
+        /// </summary>
         public Task<SqlMapper.GridReader> QueryMultipleAsync(string sql, dynamic param = null, IDbTransaction transaction = null, int? commandTimeout = null, CommandType? commandType = null)
         {
             return SqlMapper.QueryMultipleAsync(_connection, sql, param, transaction, commandTimeout, commandType);

Dapper.Rainbow/IgnorePropertyAttribute.cs

@@ -2,14 +2,24 @@
 
 namespace Dapper
 {
+    /// <summary>
+    /// Specifies whether a property should be ignored for database operations.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Property, AllowMultiple = true)]
     public class IgnorePropertyAttribute : Attribute
     {
+        /// <summary>
+        /// Specifies whether a property should be ignored for database operations.
+        /// </summary>
+        /// <param name="ignore">Whether to ignore this property.</param>
         public IgnorePropertyAttribute(bool ignore)
         {
             Value = ignore;
         }
 
+        /// <summary>
+        /// Whether to ignore this property.
+        /// </summary>
         public bool Value { get; set; }
     }
 }

Dapper.Rainbow/Snapshotter.cs

@@ -6,32 +6,62 @@
 
 namespace Dapper
 {
+    /// <summary>
+    /// Snapshots an object for comparison later.
+    /// </summary>
     public static class Snapshotter
     {
+        /// <summary>
+        /// Starts the snapshot of an objec by making a copy of the current state.
+        /// </summary>
+        /// <typeparam name="T">The type of object to snapshot.</typeparam>
+        /// <param name="obj">The object to snapshot.</param>
+        /// <returns>The snapshot of the object.</returns>
         public static Snapshot<T> Start<T>(T obj)
         {
             return new Snapshot<T>(obj);
         }
 
+        /// <summary>
+        /// A snapshot of an object's state.
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
         public class Snapshot<T>
         {
-            static Func<T, T> cloner;
-            static Func<T, T, List<Change>> differ;
-            T memberWiseClone;
-            T trackedObject;
+            private static Func<T, T> cloner;
+            private static Func<T, T, List<Change>> differ;
+            private readonly T memberWiseClone;
+            private readonly T trackedObject;
 
+            /// <summary>
+            /// Creates a snapshot from an object.
+            /// </summary>
+            /// <param name="original">The original object to snapshot.</param>
             public Snapshot(T original)
             {
                 memberWiseClone = Clone(original);
                 trackedObject = original;
             }
 
+            /// <summary>
+            /// A holder for listing new values of changes fields and properties.
+            /// </summary>
             public class Change
             {
+                /// <summary>
+                /// The name of the field or property that changed.
+                /// </summary>
                 public string Name { get; set; }
+                /// <summary>
+                /// The new value of the field or property.
+                /// </summary>
                 public object NewValue { get; set; }
             }
 
+            /// <summary>
+            /// Does a diff between the original object and the current state.
+            /// </summary>
+            /// <returns>The list of the fields changes in the object.</returns>
             public DynamicParameters Diff()
             {
                 return Diff(memberWiseClone, trackedObject);
@@ -66,15 +96,12 @@ static List<PropertyInfo> RelevantProperties()
                         ).ToList();
             }
             
-            // This is used by IL, ReSharper is wrong.
-            // ReSharper disable UnusedMember.Local
             private static bool AreEqual<U>(U first, U second)
             {
-                if (first == null && second == null) return true;
-                if (first == null) return false;
+                if (EqualityComparer<U>.Default.Equals(first, default(U)) && EqualityComparer<U>.Default.Equals(second, default(U))) return true;
+                if (EqualityComparer<U>.Default.Equals(first, default(U))) return false;
                 return first.Equals(second);
             }
-            // ReSharper restore UnusedMember.Local
 
             private static Func<T, T, List<Change>> GenerateDiffer()
             {
@@ -114,7 +141,7 @@ private static bool AreEqual<U>(U first, U second)
                     il.Emit(OpCodes.Stloc_2);
                     // [original prop val, current prop val]
 
-                    il.EmitCall(OpCodes.Call, typeof(Snapshot<T>).GetMethod("AreEqual", BindingFlags.NonPublic | BindingFlags.Static).MakeGenericMethod(new Type[] { prop.PropertyType }), null);
+                    il.EmitCall(OpCodes.Call, typeof(Snapshot<T>).GetMethod(nameof(AreEqual), BindingFlags.NonPublic | BindingFlags.Static).MakeGenericMethod(new Type[] { prop.PropertyType }), null);
                     // [result] 
 
                     Label skip = il.DefineLabel();

Dapper.Rainbow/SqlCompactDatabase.cs

@@ -5,10 +5,23 @@
 
 namespace Dapper
 {
+    /// <summary>
+    /// A SQL Compact specific <see cref="Database{TDatabase}"/> implementation.
+    /// </summary>
+    /// <typeparam name="TDatabase">The type of database.</typeparam>
     public abstract class SqlCompactDatabase<TDatabase> : Database<TDatabase> where TDatabase : Database<TDatabase>, new()
     {
+        /// <summary>
+        /// A SQL Compact specific table, which handles the syntax correctly across operations.
+        /// </summary>
+        /// <typeparam name="T">The type in the table.</typeparam>
         public class SqlCompactTable<T> : Table<T>
         {
+            /// <summary>
+            /// Creates a table for a SQL Compact database.
+            /// </summary>
+            /// <param name="database"></param>
+            /// <param name="likelyTableName"></param>
             public SqlCompactTable(Database<TDatabase> database, string likelyTableName)
                 : base(database, likelyTableName)
             {
@@ -38,9 +51,14 @@ public SqlCompactTable(Database<TDatabase> database, string likelyTableName)
             }
         }
 
+        /// <summary>
+        /// Initializes the databases.
+        /// </summary>
+        /// <param name="connection">The connection to use.</param>
+        /// <returns>The newly created database.</returns>
         public static TDatabase Init(DbConnection connection)
         {
-            TDatabase db = new TDatabase();
+            var db = new TDatabase();
             db.InitDatabase(connection, 0);
             return db;
         }

Dapper.Tests.Performance/PetaPoco/PetaPoco.cs

@@ -1112,7 +1112,7 @@ public PocoData(Type t)
 					{
 						var colattr = (Column)ColAttrs[0];
 						pc.ColumnName = colattr.Name;
-						if ((colattr as ResultColumn) != null)
+						if (colattr is ResultColumn)
 							pc.ResultColumn = true;
 					}
 					if (pc.ColumnName == null)

Dapper/DynamicParameters.cs

@@ -24,12 +24,12 @@ public partial class DynamicParameters : SqlMapper.IDynamicParameters, SqlMapper
         Dictionary<string, ParamInfo> parameters = new Dictionary<string, ParamInfo>();
         List<object> templates;
 
-        object SqlMapper.IParameterLookup.this[string member]
+        object SqlMapper.IParameterLookup.this[string name]
         {
             get
             {
                 ParamInfo param;
-                return parameters.TryGetValue(member, out param) ? param.Value : null;
+                return parameters.TryGetValue(name, out param) ? param.Value : null;
             }
         }
 

Dapper/SqlMapper.DapperRow.cs

@@ -39,9 +39,9 @@ private sealed class DeadValue
                 }
             }
 
-            public bool TryGetValue(string name, out object value)
+            public bool TryGetValue(string key, out object value)
             {
-                var index = table.IndexOfName(name);
+                var index = table.IndexOfName(key);
                 if (index < 0)
                 { // doesn't exist
                     value = null;