C# mysql表没有得到更新
我正在将数据从SQL server复制到mysql。我从SQLServer加载一个表,从mysql加载一个表,然后将数据复制到服务器上。数据将被复制到新表中,但数据库中的表仍为空。提前谢谢。这是我的密码-C# mysql表没有得到更新,c#,mysql,database,C#,Mysql,Database,我正在将数据从SQL server复制到mysql。我从SQLServer加载一个表,从mysql加载一个表,然后将数据复制到服务器上。数据将被复制到新表中,但数据库中的表仍为空。提前谢谢。这是我的密码- private void WriteTable(DataTable table, string tablename) { long maxid=0; MySql.Data.MySqlClient.MySqlCommand cmd = new MySql.
private void WriteTable(DataTable table, string tablename)
{
long maxid=0;
MySql.Data.MySqlClient.MySqlCommand cmd = new MySql.Data.MySqlClient.MySqlCommand("select * from " + tablename, mysqlConn);
MySql.Data.MySqlClient.MySqlDataAdapter adapter = new MySql.Data.MySqlClient.MySqlDataAdapter(cmd);
DataTable dest = new DataTable();
adapter.Fill(dest);
txtMessages.Text += table.Rows.Count.ToString()+"\r\n";
foreach (DataRow row in table.Rows)
{
DataRow newrow = dest.NewRow();
newrow.BeginEdit();
foreach (DataColumn col in table.Columns)
{
newrow[col.Caption] = row[col.Caption];
}
newrow.EndEdit();
dest.Rows.Add(newrow);
maxid = long.Parse(row["RowID"].ToString());
txtMessages.Text += maxid.ToString() + "\r\n";
SetRowID(tablename, maxid);
}
MySql.Data.MySqlClient.MySqlCommandBuilder builder = new MySql.Data.MySqlClient.MySqlCommandBuilder(adapter);
adapter.DeleteCommand = builder.GetDeleteCommand();
adapter.InsertCommand = builder.GetInsertCommand();
adapter.UpdateCommand = builder.GetUpdateCommand();
dest.AcceptChanges();
adapter.Update(dest);
}
仔细看看这个,这样提问者和你有同样的问题;已通过删除.AcceptChanges解决此问题;命令实际上,您已经告诉缓冲区更改已被写回,因此当您进行更多更改时,这些更改不会被提交。可能重复的更改