db.Fastest support BulkCopyUpdate

Src/Asp.Net/MySqlTest/Demo/Demo2_Updateable.cs

@@ -99,7 +99,8 @@ namespace OrmTest
 
             //Where Sql
             //db.Updateable(updateObj).Where("id=@x", new { x = "1" }).ExecuteCommand();
-
+            var dataTable = db.Queryable<Order>().Select("id,name,1 as price").Take(2).ToDataTable();
+            db.Fastest<Order>().BulkUpdate("Order", dataTable, new string[] { "id" }, new string[] { "name" });
             Console.WriteLine("#### Updateable End ####");
         }
 

Src/Asp.Net/SqlServerTest/Demo/Demo2_Updateable.cs

@@ -109,8 +109,8 @@ namespace OrmTest
                .AddQueue();
             db.SaveQueues();
 
-
+            var dataTable = db.Queryable<Order>().Select("id,name,1 as price").Take(2).ToDataTable();
-            db.Fastest<Order>().BulkCopy(updateObjs);
+            db.Fastest<Order>().BulkUpdate("Order", dataTable,new string[] {"id" },new string[] {"name" });
             Console.WriteLine("#### Updateable End ####");
         }
 

Src/Asp.Net/SqlSugar/Abstract/FastestProvider/FastestProvider.cs

@@ -94,6 +94,28 @@ namespace SqlSugar
                 return  await _BulkUpdate(datas, whereColumns, updateColumns);
             }
         }
+
+        public int BulkUpdate(string tableName,DataTable dataTable, string[] whereColumns, string[] updateColumns)
+        {
+            return BulkUpdateAsync(tableName,dataTable, whereColumns, updateColumns).ConfigureAwait(true).GetAwaiter().GetResult();
+        }
+        public async Task<int> BulkUpdateAsync(string tableName, DataTable dataTable, string[] whereColumns, string[] updateColumns)
+        {
+
+            if (Size > 0)
+            {
+                int resul = 0;
+                await this.context.Utilities.PageEachAsync(dataTable.Rows.Cast<DataRow>().ToList(), Size, async item =>
+                {
+                    resul += await _BulkUpdate(tableName,item.CopyToDataTable(), whereColumns, updateColumns);
+                });
+                return resul;
+            }
+            else
+            {
+                return await _BulkUpdate(tableName,dataTable, whereColumns, updateColumns);
+            }
+        }
         #endregion
 
         #region Core
@@ -117,6 +139,28 @@ namespace SqlSugar
             End(datas, false);
             return result;
         }
+        private async Task<int> _BulkUpdate(string tableName,DataTable dataTable, string[] whereColumns, string[] updateColumns)
+        {
+            var datas = new string[dataTable.Rows.Count].ToList();
+            Begin(datas, false);
+            Check.Exception(whereColumns == null || whereColumns.Count() == 0, "where columns count=0 or need primary key");
+            Check.Exception(updateColumns == null || updateColumns.Count() == 0, "set columns count=0");
+            var isAuto = this.context.CurrentConnectionConfig.IsAutoCloseConnection;
+            this.context.CurrentConnectionConfig.IsAutoCloseConnection = false;
+            dataTable.TableName = this.queryable.SqlBuilder.GetTranslationTableName(tableName);
+            DataTable dt = GetCopyWriteDataTable(dataTable);
+            IFastBuilder buider = GetBuider();
+            buider.Context = context;
+            await buider.CreateTempAsync<object>(dt);
+            await buider.ExecuteBulkCopyAsync(dt);
+            //var queryTemp = this.context.Queryable<T>().AS(dt.TableName).ToList();//test
+            var result = await buider.UpdateByTempAsync(GetTableName(), dt.TableName, updateColumns, whereColumns);
+            this.context.DbMaintenance.DropTable(dt.TableName);
+            this.context.CurrentConnectionConfig.IsAutoCloseConnection = isAuto;
+            buider.CloseDb();
+            End(datas, false);
+            return result;
+        }
         private async Task<int> _BulkCopy(List<T> datas)
         {
             Begin(datas,true);

Src/Asp.Net/SqlSugar/Interface/IFastest.cs

@@ -19,7 +19,8 @@ namespace SqlSugar
         Task<int> BulkUpdateAsync(List<T> datas);
         int BulkUpdate(List<T> datas, string[] whereColumns, string[] updateColumns);
         Task<int> BulkUpdateAsync(List<T> datas, string[] whereColumns, string[] updateColumns);
-
+        int BulkUpdate(string tableName,DataTable dataTable, string[] whereColumns, string[] updateColumns);
+        Task<int> BulkUpdateAsync(string tableName, DataTable dataTable, string[] whereColumns, string[] updateColumns);
         SplitFastest<T> SplitTable();
     }
 }