最近做了個小項目,其中要對兩個表同時進行插入insert操作處理,而且對它們的插入操作要麼全部成功,要麼都插入失敗,否則只插入一個表成功會引起數據庫的不一致。很顯然,這是一個事務處理(transcation),要麼commit成功,要麼則rollback。在代碼中,我利用的是C#中提供的Transcation類來實現,代碼如下:
{
string strconn = ConfigurationSettings.AppSettings["dsn"];
SqlConnection cnn = new SqlConnection(strconn);
SqlCommand cmd = new SqlCommand();
SqlTransaction transaction = null;
try
{
cnn.Open();
// 先插入分店shop表,再插入經理Manager表,並將其作爲一個事務進行處理
transaction = cnn.BeginTransaction();
cmd.Transaction = transaction;
cmd.Connection = cnn;
// 插入分店shop表
string shopstr = "insert into shop values('" + tbx_shopid.Text + "','" + tbx_shopname.Text + "','" + tbx_shopaddress.Text + "','" + tbx_shopphone.Text + "')";
cmd.CommandType = CommandType.Text;
cmd.CommandText = shopstr;
cmd.ExecuteNonQuery();
// 插入經理Manager表
string managerstr = "insert into manager values('" + tbx_managerid.Text + "','" + tbx_managerpassword.Text + "','" + tbx_managername.Text + "','" + tbx_shopid.Text + "')";
cmd.CommandType = CommandType.Text;
cmd.CommandText = managerstr;
cmd.ExecuteNonQuery();
// 提交事務
transaction.Commit();
lbl_msg.Text = "添加分店操作成功";
}
catch(Exception ex)
{
lbl_msg.Text = "添加分店操作失敗";
transaction.Rollback();
}
finally
{
cnn.Close();
}
}