MSSqlHelper
public class MSSqlHelper : IDisposable { private SqlConnection _con; public void Dispose() { this._con.Dispose(); } public MSSqlHelper(string connName) { _con = new SqlConnection(ConfigurationManager.ConnectionStrings[connName].ConnectionString); } #region 增删改查 public int ExecuteNonQuery(string sql, params SqlParameter[] parameters) { SqlCommand cmd = GetCommand(sql, parameters); return cmd.ExecuteNonQuery(); } public object ExecuteScalar(string sql, params SqlParameter[] parameters) { SqlCommand cmd = GetCommand(sql, parameters); return cmd.ExecuteScalar(); } public DataTable ExecuteDataTable(string sql, params SqlParameter[] parameters) { DataTable dt = new DataTable(); SqlCommand cmd = GetCommand(sql, parameters); SqlDataAdapter da = new SqlDataAdapter(cmd); da.Fill(dt); return dt; } public SqlDataReader GetSqlDataReader(string sql, params SqlParameter[] parameters) { SqlCommand cmd = GetCommand(sql, parameters); return cmd.ExecuteReader(CommandBehavior.CloseConnection); } private SqlCommand GetCommand(string commandtext, SqlParameter[] parameters) { if (this._con.State == System.Data.ConnectionState.Closed) { this._con.Open(); } else if (this._con.State == System.Data.ConnectionState.Broken) { this._con.Close(); this._con.Open(); } SqlCommand cmd = new SqlCommand(); cmd.CommandText = commandtext; cmd.Connection = this._con; cmd.Transaction = this._tran; if (parameters != null) { cmd.Parameters.AddRange(parameters); } return cmd; } #endregion #region 事务 private SqlTransaction _tran; /// <summary> /// 开启事务 /// </summary> public void BeginTran() { _tran = this._con.BeginTransaction(); } /// <summary> /// 提交事务 /// </summary> public void CommitTran() { this._tran.Commit(); } /// <summary> /// 回滚事务 /// </summary> public void RollbackTran() { this._tran.Rollback(); } #endregion }
//调用
string sql = @"INSERT INTO dbo.Person( Name, Age, gender, Tel )VALUES('lk','12','0','1111222')"; string sql2 = @"INSERT INTO dbo.Person( Name, Age, gender, Tel )VALUES('xl','12','1','1111222')"; using (MSSqlHelper db = new MSSqlHelper()) { try { db.BeginTran(); db.ExecuteNonQuery(sql); db.ExecuteNonQuery(sql2); db.CommitTran(); } catch { db.RollbackTran(); } }