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。
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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创新互联。
