C#Datatable导入sqlserver数据库中，三种常见，快捷的方法

1，最常见的Executenonquery（返回影响的行数）sql是我的查询插入语句，你可以换成你的！这种方式入库，速度一般，大量数据时不提倡使用

 1         /// <summary>
 2         /// 通过table一个一个的插入
 3         /// </summary>
 4         /// <param name="table"></param>
 5         public static void Executenonquery(DataTable table)
 6         {
 7             foreach (DataRow itemRow in table.Rows)
 8             {
 9                 //if exists(select * from dbo.ID where ENG = '')
10                 //   begin
11                 //        return;
12                 //                end
13                 //else
14                 //   begin
15                 //        INSERT INTO ID([ENG],[GB],[B5],[FILE],[MSG]) values('', '', '', '', '')
16                 //   end
17                 string sql = "if exists(select * from " + table.TableName + " where ENG = '" + itemRow["ENG"].ToString() + "') "+
18                              " begin return; end else begin INSERT INTO " + table.TableName + "([ENG],[GB],[B5],[FILE],[MSG])" +
19                              "VALUES('" + itemRow["ENG"].ToString() + "'" +
20                              ",'" + itemRow["GB"].ToString() + "'" +
21                              ",'" + itemRow["B5"].ToString() + "'" +
22                              ",'" + itemRow["FILE"].ToString() + "'" +
23                              ",'" + itemRow["MSG"].ToString() + "') end";
24                 using (SqlConnection sqlconn = new SqlConnection(connectString))
25                 {
26                     sqlconn.Open();
27  
28                     SqlCommand sqlcommand = new SqlCommand(sql, sqlconn);
29                     sqlcommand.ExecuteNonQuery();
30                     sqlconn.Close();
31                 }
32             }
33         }
34 ————————————————

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