本文章以一个表为例，要转多个表则可将DataSet关联多个表，下面给出完整代码，包括引用以及main函数与复制函数。
要说明的是，必须先用Sql语句复制表结构，才能顺利的使用以下代码复制数据。

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data; using System.Data.SqlClient; using System.Data.Common; namespace CopyData { class Program { static void Main(string[] args) { //要复制的表名 string table = "V_Position"; //构造连接字符串 SqlConnectionStringBuilder builder1 = new SqlConnectionStringBuilder(); builder1.DataSource = ".\\CANFLY"; //实例名称为CANFLY builder1.InitialCatalog = "desdata"; //目标数据库 builder1.IntegratedSecurity = true; //使用Windows身份验证 SqlConnectionStringBuilder builder2 = new SqlConnectionStringBuilder(); builder2.DataSource = ".\\CANFLY"; builder2.InitialCatalog = "bddata"; //源数据库 builder2.IntegratedSecurity = true; //调用复制数据库函数 InsertTable(builder1.ConnectionString, builder2.ConnectionString, table); } //参数为两个数据库的连接字符串 private static void InsertTable(string conString1, string conString2, string tabStr) { //连接数据库 SqlConnection conn1 = new SqlConnection(); conn1.ConnectionString = conString1; conn1.Open(); SqlConnection conn2 = new SqlConnection(); conn2.ConnectionString = conString2; conn2.Open(); //填充DataSet1 SqlDataAdapter adapter1 = new SqlDataAdapter("select * from " + tabStr, conn1); DataSet dataSet1 = new DataSet(); if (dataSet1 != null) { adapter1.Fill(dataSet1, tabStr); } SqlDataAdapter adapter2 = new SqlDataAdapter("select * from " + tabStr, conn2); DataSet dataSet2 = new DataSet(); SqlCommand cmd2 = new SqlCommand("select count(*) from " + tabStr, conn2); Object res2 = cmd2.ExecuteScalar(); if (res2 != null) { int nCount = Convert.ToInt32(res2.ToString()); if (nCount == 0) { conn1.Close(); conn2.Close(); return; } } //填充DataSet2 if (dataSet2 != null) { adapter2.Fill(dataSet2, tabStr); } //复制数据 for (int j = 0; j < dataSet2.Tables[0].Rows.Count; j++) { dataSet1.Tables[0].LoadDataRow(dataSet2.Tables[0].Rows[j].ItemArray, false); } //将DataSet变换显示在与其关联的目标数据库 SqlCommandBuilder cb = new SqlCommandBuilder(adapter1); adapter1.Update(dataSet1, tabStr); cb.RefreshSchema(); Console.WriteLine("表" + tabStr + "复制成功！"); conn1.Close(); conn2.Close(); } } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。