ADO.Net 浅析(五)-ADO对象之---连接对象
ADO与操作数据库,第一步是,创建连接对象,配置连接对象.
下面,对sqlconnection对象做一些介绍
(一)成员概览
BeginTransaction | 已重载。 开始数据库事务。 |
ChangeDatabase | 为打开的 SqlConnection 更改当前数据库。 (重写 |
GetSchema | 已重载。 返回此 SqlConnection 的数据源的架构信息。 |
ConnectionTimeout | 获取在尝试建立连接时终止尝试并生成错误之前所等待的时间。 (重写 |
Database | 获取当前数据库或连接打开后要使用的数据库的名称。 (重写 |
DataSource | 获取要连接的 SQL Server 实例的名称。 (重写 |
State | 指示 SqlConnection 的状态。 (重写 |
(1)BeginTransaction()
public class MyTransaction
{
private string connstr;
public string Connstr
{
get { return connstr; }
set { connstr = value; }
}
public MyTransaction()
{
connstr = ConfigurationManager.ConnectionStrings["AdWEntities"].ConnectionString;
}
public void Trans()
{
using (SqlConnection conn = new SqlConnection(Connstr))
{
conn.Open();
SqlTransaction trs = conn.BeginTransaction();
SqlCommand cmd = conn.CreateCommand();
cmd.CommandText = "INSERT INTO [HumanResources].[Employee] " +
"([BusinessEntityID] " +
" ,[NationalIDNumber] " +
" ,[LoginID] " +
" ,[OrganizationNode] " +
" ,[JobTitle] " +
" ,[BirthDate] " +
" ,[MaritalStatus] " +
",[Gender] " +
" ,[HireDate] " +
" ,[SalariedFlag] " +
" ,[VacationHours] " +
" ,[SickLeaveHours] " +
" ,[CurrentFlag] " +
" ,[rowguid] " +
" ,[ModifiedDate]) " +
" VALUES " +
" ('293' " +
" ,'134219719' " +
" ,'adventure-works\ranjit123' " +
" ,'/' " +
" ,'Sales Representative' " +
" ,'1965-10-31' " +
" ,'S' " +
" ,'M'" +
" ,'2002-07-01' " +
" ,'1' " +
" ,'34' " +
" ,'37' " +
" ,'1' " +
" ,NEWID() " +
" ,'2004-07-31 00:00:00.000')";
try
{
cmd.Transaction = trs;
cmd.ExecuteNonQuery();
Console.WriteLine("1");
cmd.ExecuteNonQuery();
Console.WriteLine("2");
trs.Commit();
}
catch (Exception ex)
{
Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
Console.WriteLine(" Message: {0}", ex.Message);
trs.Rollback();
}
}
}
}
{
private string connstr;
public string Connstr
{
get { return connstr; }
set { connstr = value; }
}
public MyTransaction()
{
connstr = ConfigurationManager.ConnectionStrings["AdWEntities"].ConnectionString;
}
public void Trans()
{
using (SqlConnection conn = new SqlConnection(Connstr))
{
conn.Open();
SqlTransaction trs = conn.BeginTransaction();
SqlCommand cmd = conn.CreateCommand();
cmd.CommandText = "INSERT INTO [HumanResources].[Employee] " +
"([BusinessEntityID] " +
" ,[NationalIDNumber] " +
" ,[LoginID] " +
" ,[OrganizationNode] " +
" ,[JobTitle] " +
" ,[BirthDate] " +
" ,[MaritalStatus] " +
",[Gender] " +
" ,[HireDate] " +
" ,[SalariedFlag] " +
" ,[VacationHours] " +
" ,[SickLeaveHours] " +
" ,[CurrentFlag] " +
" ,[rowguid] " +
" ,[ModifiedDate]) " +
" VALUES " +
" ('293' " +
" ,'134219719' " +
" ,'adventure-works\ranjit123' " +
" ,'/' " +
" ,'Sales Representative' " +
" ,'1965-10-31' " +
" ,'S' " +
" ,'M'" +
" ,'2002-07-01' " +
" ,'1' " +
" ,'34' " +
" ,'37' " +
" ,'1' " +
" ,NEWID() " +
" ,'2004-07-31 00:00:00.000')";
try
{
cmd.Transaction = trs;
cmd.ExecuteNonQuery();
Console.WriteLine("1");
cmd.ExecuteNonQuery();
Console.WriteLine("2");
trs.Commit();
}
catch (Exception ex)
{
Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
Console.WriteLine(" Message: {0}", ex.Message);
trs.Rollback();
}
}
}
}