C# 有没有像样的ADO.NET辅助工具UTIL?
我正在寻找一些像样的ADO.NET助手实用程序类,以允许我查询ADO.NET数据源。我不寻找太花哨的东西,但它必须支持事务。外面有什么东西吗C# 有没有像样的ADO.NET辅助工具UTIL?,c#,.net,ado.net,C#,.net,Ado.net,我正在寻找一些像样的ADO.NET助手实用程序类,以允许我查询ADO.NET数据源。我不寻找太花哨的东西,但它必须支持事务。外面有什么东西吗 另外,我知道数据访问块可以做到这一点,但我一直在寻找一些与其他组件更独立的东西。像一个简单的库或什么的它取决于你对“没什么特别的”和“简单”的定义,但它能很好地抽象出你不想手工编写的样板ADO.NET代码。比如说, public abstract class PersonAccessor : DataAccessor<Person> {
另外,我知道数据访问块可以做到这一点,但我一直在寻找一些与其他组件更独立的东西。像一个简单的库或什么的它取决于你对“没什么特别的”和“简单”的定义,但它能很好地抽象出你不想手工编写的样板ADO.NET代码。比如说,
public abstract class PersonAccessor : DataAccessor<Person>
{
[SqlQuery("SELECT * FROM Person WHERE PersonID = @id")]
public abstract Person GetPersonByID(int @id);
}
Person person = DataAccessor.CreateInstance<PersonAccessor>.
GetPersonByID(2);
添加参数就像在DbManager
上调用方法一样简单
而且你不应该真的害怕ORMs。如果它只是一个简单的包装器,为什么不自己包装命令呢 例如:
//
///执行存储过程或查询,返回受影响的行数。
///
///
///
///
///
///
公共静态int ExecuteQuery(字符串commandText、CommandType CommandType、列表sqlParameters、SqlTransaction SqlTransaction)
{
if(sqlTransaction==null)
{
使用(SqlConnection SqlConnection=newsqlconnection(GetConnectionString()))
{
sqlConnection.Open();
使用(SqlCommand SqlCommand=sqlConnection.CreateCommand())
{
sqlCommand.CommandType=CommandType;
sqlCommand.CommandText=CommandText;
if(sqlParameters!=null)
{
foreach(sqlParameters中的SqlParameter SqlParameter)
{
sqlCommand.Parameters.Add(sqlParameter);
}
}
返回sqlCommand.ExecuteOnQuery();
}
}
}
其他的
{
SqlCommand SqlCommand=newsqlcommand(commandText,sqlTransaction.Connection,sqlTransaction);
sqlCommand.CommandType=CommandType;
foreach(sqlParameters中的SqlParameter SqlParameter)
{
sqlCommand.Parameters.Add(sqlParameter);
}
返回sqlCommand.ExecuteOnQuery();
}
}
公共类实用程序
{
私有字符串_connectionstring;
专用SqlConnection-DbConn;
私人住宅;
公共int超时;
公共字符串连接字符串
{
设置{u connectionstring=value;}
}
公用程序(字符串connstr)
{
_connectionstring=connstr;
CmdTimeOut=-1;
DBStatus=false;
}
公用事业()
{
DBStatus=false;
CmdTimeOut=-1;
}
///创建并打开一个新连接
公开作废
{
尝试
{
DbConn=newsqlconnection();
DbConn.ConnectionString=\u ConnectionString;
DbConn.Open();
DBStatus=true;
}
捕获(例外情况除外)
{
掷骰子;
}
}
私有void IsConnOpen()
{
尝试
{
if(DbConn.State==ConnectionState.Closed)
{
Open();
}
}
捕获(例外情况除外)
{
掷骰子;
}
}
公共布尔等参元()
{
返回DBStatus;
}
公众假期结束()
{
if(IsOpen())
{
DbConn.Close();
DbConn.Dispose();
DBStatus=false;
}
}
public Int16 Insert(字符串SqlQuery,参数SqlParameter[]SqlParam)
{
IsConnOpen();
Int16 newProdID=0;
SqlCommand cmd=默认值(SqlCommand);
SqlQuery+=“选择强制转换(SCOPE_IDENTITY()为int);”;
cmd=新的SqlCommand(SqlQuery,DbConn);
如果(CmdTimeOut>=0)
{
cmd.CommandTimeout=CmdTimeOut;
}
foreach(SqlParam中的SqlParameter param)
{
cmd.Parameters.Add(param);
}
newProdID=Convert.ToInt16(cmd.ExecuteScalar());
返回newProdID;
}
公共Int64执行(字符串SqlQuery)
{
IsConnOpen();
Int64 newProdID=0;
SqlCommand cmd=新的SqlCommand(SqlQuery,DbConn);
如果(CmdTimeOut>=0)
{
cmd.CommandTimeout=CmdTimeOut;
}
newProdID=Convert.ToInt64(cmd.ExecuteNonQuery());
返回newProdID;
}
public Int64 Execute(字符串SqlQuery,参数SqlParameter[]SqlParam)
{
IsConnOpen();
SqlCommand cmd=新的SqlCommand(SqlQuery,DbConn);
如果(CmdTimeOut>=0)
{
cmd.CommandTimeout=CmdTimeOut;
}
foreach(SqlParam中的SqlParameter param)
{
cmd.Parameters.Add(param);
}
返回Convert.ToInt64(cmd.ExecuteNonQuery());
}
公共对象SP_Execute(字符串SpName,参数SqlParameter[]SqlParam)
{
IsConnOpen();
SqlCommand cmd=新的SqlCommand(SpName,DbConn);
如果(CmdTimeOut>=0)
{
cmd.CommandTimeout=CmdTimeOut;
}
cmd.CommandType=CommandType.storedProcess;
foreach(SqlParam中的SqlParameter param)
{
cmd.Parameters.Add(param);
}
返回cmd.ExecuteScalar();
}
公共对象SelectColumn(字符串SqlQuery,参数SqlParameter[]SqlParam)
{
IsConnOpen();
SqlCommand cmd=新的SqlCommand(SqlQuery,DbConn);
如果(CmdTimeOut>=0)
{
cmd.CommandTimeout=CmdTimeOut;
}
cmd.CommandType=CommandType.Text;
foreach(SqlParam中的SqlParameter param)
{
cmd.Parameters.Add(param);
}
返回cmd.ExecuteScalar();
}
公共对象SelectColumn(字符串表名、字符串列名、字符串条件
using (DbManager db = new DbManager())
{
DataSet ds = db
.SetCommand("SELECT * FROM Person")
.ExecuteDataSet();
Assert.AreNotEqual(0, ds.Tables[0].Rows.Count);
}
/// <summary>
/// Executes a stored procedure or query, returns the number of rows effected.
/// </summary>
/// <param name="commandText"></param>
/// <param name="commandType"></param>
/// <param name="sqlParameters"></param>
/// <param name="sqlTransaction"></param>
/// <returns></returns>
public static int ExecuteQuery(string commandText, CommandType commandType, List<SqlParameter> sqlParameters, SqlTransaction sqlTransaction)
{
if (sqlTransaction == null)
{
using (SqlConnection sqlConnection = new SqlConnection(GetConnectionString()))
{
sqlConnection.Open();
using (SqlCommand sqlCommand = sqlConnection.CreateCommand())
{
sqlCommand.CommandType = commandType;
sqlCommand.CommandText = commandText;
if (sqlParameters != null)
{
foreach (SqlParameter sqlParameter in sqlParameters)
{
sqlCommand.Parameters.Add(sqlParameter);
}
}
return sqlCommand.ExecuteNonQuery();
}
}
}
else
{
SqlCommand sqlCommand = new SqlCommand(commandText, sqlTransaction.Connection, sqlTransaction);
sqlCommand.CommandType = commandType;
foreach (SqlParameter sqlParameter in sqlParameters)
{
sqlCommand.Parameters.Add(sqlParameter);
}
return sqlCommand.ExecuteNonQuery();
}
}
public class ADOUtility
{
private string _connectionstring;
private SqlConnection DbConn;
private bool DBStatus;
public int CmdTimeOut;
public string ConnectionString
{
set { _connectionstring = value; }
}
public ADOUtility(string connstr)
{
_connectionstring = connstr;
CmdTimeOut = -1;
DBStatus = false;
}
public ADOUtility()
{
DBStatus = false;
CmdTimeOut = -1;
}
/// <summary>Create and opens a new connection </summary>
public void Open()
{
try
{
DbConn = new SqlConnection();
DbConn.ConnectionString = _connectionstring;
DbConn.Open();
DBStatus = true;
}
catch (Exception ex)
{
throw ex;
}
}
private void IsConnOpen()
{
try
{
if (DbConn.State == ConnectionState.Closed)
{
Open();
}
}
catch (Exception ex)
{
throw ex;
}
}
public Boolean IsOpen()
{
return DBStatus;
}
public void Close()
{
if (IsOpen())
{
DbConn.Close();
DbConn.Dispose();
DBStatus = false;
}
}
public Int16 Insert(string SqlQuery, params SqlParameter[] SqlParam)
{
IsConnOpen();
Int16 newProdID = 0;
SqlCommand cmd = default(SqlCommand);
SqlQuery += ";SELECT CAST(SCOPE_IDENTITY() AS int);";
cmd = new SqlCommand(SqlQuery, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
foreach (SqlParameter param in SqlParam)
{
cmd.Parameters.Add(param);
}
newProdID = Convert.ToInt16(cmd.ExecuteScalar());
return newProdID;
}
public Int64 Execute(string SqlQuery)
{
IsConnOpen();
Int64 newProdID = 0;
SqlCommand cmd = new SqlCommand(SqlQuery, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
newProdID = Convert.ToInt64(cmd.ExecuteNonQuery());
return newProdID;
}
public Int64 Execute(string SqlQuery, params SqlParameter[] SqlParam)
{
IsConnOpen();
SqlCommand cmd = new SqlCommand(SqlQuery, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
foreach (SqlParameter param in SqlParam)
{
cmd.Parameters.Add(param);
}
return Convert.ToInt64(cmd.ExecuteNonQuery());
}
public object SP_Execute(string SpName, params SqlParameter[] SqlParam)
{
IsConnOpen();
SqlCommand cmd = new SqlCommand(SpName, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
cmd.CommandType = CommandType.StoredProcedure;
foreach (SqlParameter param in SqlParam)
{
cmd.Parameters.Add(param);
}
return cmd.ExecuteScalar();
}
public object SelectColumn(string SqlQuery, params SqlParameter[] SqlParam)
{
IsConnOpen();
SqlCommand cmd = new SqlCommand(SqlQuery, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
cmd.CommandType = CommandType.Text;
foreach (SqlParameter param in SqlParam)
{
cmd.Parameters.Add(param);
}
return cmd.ExecuteScalar();
}
public object SelectColumn(string tablename, string columnname, string condition)
{
IsConnOpen();
if (!string.IsNullOrEmpty(condition))
{
condition = "where " + condition;
}
string query = null;
query = "select " + columnname + " from " + tablename + " " + condition;
SqlCommand cmd = new SqlCommand(query, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
DataSet dbtable = new DataSet();
adapter.Fill(dbtable, tablename);
if (dbtable.Tables[tablename].Rows.Count > 0)
{
return dbtable.Tables[tablename].Rows[0][0];
}
else
{
return "no_record_found";
}
}
public DataTable Select_Table(string SqlQuery)
{
IsConnOpen();
SqlCommand cmd = new SqlCommand(SqlQuery, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
DataSet dbtable = new DataSet();
adapter.Fill(dbtable, "recordset");
return dbtable.Tables["recordset"];
}
public DataTable Select_Table(string SqlQuery, params SqlParameter[] SqlParam)
{
IsConnOpen();
SqlCommand cmd = new SqlCommand(SqlQuery, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
foreach (SqlParameter param in SqlParam)
{
cmd.Parameters.Add(param);
}
DataSet dbtable = new DataSet();
adapter.Fill(dbtable, "recordset");
return dbtable.Tables["recordset"];
}
public int Select_Row(string SqlQuery, ref DataRow RowData, params SqlParameter[] SqlParam)
{
IsConnOpen();
SqlCommand cmd = new SqlCommand(SqlQuery, DbConn);
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
foreach (SqlParameter param in SqlParam)
{
cmd.Parameters.Add(param);
}
DataSet dbtable = new DataSet();
adapter.Fill(dbtable, "recordset");
if (dbtable.Tables["recordset"].Rows.Count > 0)
{
RowData = dbtable.Tables["recordset"].Rows[0];
return dbtable.Tables["recordset"].Rows.Count;
}
else
{
RowData = null;
return 0;
}
}
public DataTable SP_Execute_Table(string SpName, params SqlParameter[] SqlParam)
{
IsConnOpen();
SqlCommand cmd = new SqlCommand();
cmd.CommandText = SpName;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Connection = DbConn;
if (CmdTimeOut >= 0)
{
cmd.CommandTimeout = CmdTimeOut;
}
foreach (SqlParameter param in SqlParam)
{
cmd.Parameters.Add(param);
}
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
DataSet dbtable = new DataSet();
adapter.Fill(dbtable, "recordset");
return dbtable.Tables["recordset"];
}
}