Update SqlblueCopy

Src/Asp.Net/SqlServerTest/SqlServerTest.csproj

@@ -67,6 +67,7 @@
     <Compile Include="Demo\DemoE_CodeFirst.cs" />
     <Compile Include="Demo\DemoF_Utilities.cs" />
     <Compile Include="Demo\DemoG_SimpleClient.cs" />
+    <Compile Include="Demo\student.cs" />
     <Compile Include="Models\Custom.cs" />
     <Compile Include="Models\EntityMapper.cs" />
     <Compile Include="Models\Mapper.cs" />

Src/Asp.Net/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerBlueCopy.cs

@@ -1,5 +1,7 @@
 using System;
 using System.Collections.Generic;
+using System.Data;
+using System.Data.SqlClient;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -15,29 +17,35 @@ namespace SqlSugar
         public int ExecuteBlueCopy()
         {
             if (DbColumnInfoList==null||DbColumnInfoList.Count == 0) return 0;
-            int pmax = 2030;
+            DataTable dt = new DataTable();
-            decimal count = DbColumnInfoList.Count;
+            var columns = DbColumnInfoList.First().Select(it => it.DbColumnName ).ToList();
-            var columns = DbColumnInfoList.First().Select(it => Builder.GetTranslationColumnName(it.DbColumnName)).ToList();
+            foreach (var item in columns)
-            decimal columnCount = columns.Count();
-            decimal pageSize = count / ((count * columnCount) / pmax);
-            this.Context.Utilities.PageEach(DbColumnInfoList,Convert.ToInt32(pageSize), pageItems =>
             {
-                StringBuilder batchInsetrSql = new StringBuilder();
+                dt.Columns.Add(item);
-                batchInsetrSql.AppendFormat(InsertBuilder.SqlTemplateBatch, InsertBuilder.GetTableNameString, string.Join(",", columns));
+            }
-                int i = 0;
+            foreach (var rowInfos in DbColumnInfoList)
-                foreach (var item in pageItems)
+            {
+                var dr = dt.NewRow();
+                foreach (var item in rowInfos.ToList())
                 {
-                    batchInsetrSql.Append("\r\n SELECT " + string.Join(",", item.ToList().Select(it => string.Format(InsertBuilder.SqlTemplateBatchSelect, AddParameter(i,it.DbColumnName,it.Value), Builder.GetTranslationColumnName(it.DbColumnName)))));
+                    dr[item.DbColumnName] = item.Value;
-                    if (pageItems.Last() != item)
-                    {
-                        batchInsetrSql.Append(" UNION ALL");
-                    }
-                    ++i;
                 }
-                this.Context.Ado.ExecuteCommand(batchInsetrSql.ToString(),InsertBuilder.Parameters);
+                dt.Rows.Add(dr);
-                InsertBuilder.Parameters = new List<SugarParameter>();
+            }
-            });
+            SqlBulkCopy bulkCopy = new SqlBulkCopy(this.Context.Ado.Connection as SqlConnection);
-            return count.ObjToInt();
+            //获取目标表的名称
+            bulkCopy.DestinationTableName = InsertBuilder.EntityInfo.EntityName;
+            //写入DataReader对象
+            if (this.Context.Ado.Connection.State == ConnectionState.Closed)
+            {
+                this.Context.Ado.Connection.Open();
+            }
+            bulkCopy.WriteToServer(dt);
+            if (this.Context.CurrentConnectionConfig.IsAutoCloseConnection && this.Context.Ado.Transaction == null)
+            {
+                this.Context.Ado.Connection.Close();
+            }
+            return DbColumnInfoList.Count;
         }
 
         private object AddParameter(int i,string dbColumnName, object value)