asp.net 數據庫連接類代碼(SQL)

代碼如下:
public class SqlOperation
{
#region 屬性
/// <summary>
/// 保存在Web.config中的連接字符串
/// </summary>
protected static string connectionstring = System.Configuration.ConfigurationManager.ConnectionStrings["hao"].ConnectionString;
/// <summary>
/// SqlConnection對象
/// </summary>
protected static SqlConnection conn = new SqlConnection();
/// <summary>
/// SqlCommand對象
/// </summary>
protected static SqlCommand comm = new SqlCommand();
#endregion

#region 內部函數
/// <summary>
/// 打開數據庫連接
/// </summary>
private static void ConnectionOpen()
{
if (conn.State != ConnectionState.Open)
{
conn.Close();
conn.ConnectionString = connectionstring;
comm.Connection = conn;
try
{
conn.Open();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
}

/// <summary>
/// 關閉數據庫連接
/// </summary>
private static void ConnectionClose()
{
conn.Close();
conn.Dispose();
comm.Dispose();
}

#endregion

/// <summary>
/// 執行SQL語句
/// </summary>
/// <param name="SqlString">要執行的SQL語句</param>
public static void ExecuteSQL(string SqlString)
{
try
{
ConnectionOpen();
comm.CommandType = CommandType.Text;
comm.CommandText = SqlString;
comm.ExecuteNonQuery();
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
}

/// <summary>
/// 執行存儲過程
/// </summary>
/// <param name="ProcedureName">存儲過程名稱</param>
/// <param name="coll">存儲過程需要的參數集合</param>
public static void ExecuteProcedure(string ProcedureName, params SqlParameter[] coll)
{
try
{
ConnectionOpen();
comm.CommandType = CommandType.StoredProcedure;
comm.CommandText = ProcedureName;
comm.Parameters.Clear();
for (int i = 0; i < coll.Length; i++)
{
comm.Parameters.Add(coll[i]);
}
comm.ExecuteNonQuery();
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
}

/// <summary>
/// 執行Sql查詢并返回第一行的第一條記錄，返回object，使用時需要拆箱 -> unbox
/// </summary>
/// <param name="sqlstr">傳入的Sql語句</param>
/// <returns>返回object類型的第一行第一條記錄</returns>
public static object ExecuteScalar(string SqlString)
{
object obj = new object();
try
{
ConnectionOpen();
comm.CommandType = CommandType.Text;
comm.CommandText = SqlString;
obj = comm.ExecuteScalar();
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
return obj;
}

/// <summary>
/// 執行SQL語句,同時進行事務處理
/// </summary>
/// <param name="sqlstr">要執行的SQL語句</param>
public static void ExecuteTransactionSQL(string SqlString)
{
SqlTransaction trans;
trans = conn.BeginTransaction();
comm.Transaction = trans;
try
{
ConnectionOpen();
comm.CommandType = CommandType.Text;
comm.CommandText = SqlString;
comm.ExecuteNonQuery();
trans.Commit();
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
}

/// <summary>
/// 執行指定SQL查詢，返回DataSet
/// </summary>
/// <param name="sqlstr">要執行的SQL語句</param>
/// <returns>DataSet</returns>
public static DataSet GetDataSetBySQL(string SqlString)
{
SqlDataAdapter da = new SqlDataAdapter();
DataSet ds = new DataSet();
try
{
ConnectionOpen();
comm.CommandType = CommandType.Text;
comm.CommandText = SqlString;
da.SelectCommand = comm;
da.Fill(ds);
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
return ds;
}

/// <summary>
/// 通過存儲過程返回DataSet
/// </summary>
/// <param name="ProcedureName">存儲過程名稱</param>
/// <param name="coll">SqlParameter集合</param>
/// <returns>DataSet</returns>
public static DataSet GetDataSetByProcedure(string ProcedureName, params SqlParameter[] coll)
{
SqlDataAdapter da = new SqlDataAdapter();
DataSet ds = new DataSet();
try
{
ConnectionOpen();
comm.CommandType = CommandType.StoredProcedure;
comm.Parameters.Clear();
for (int i = 0; i < coll.Length; i++)
{
comm.Parameters.Add(coll[i]);
}
comm.CommandText = ProcedureName;
da.SelectCommand = comm;
da.Fill(ds);
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
return ds;
}

/// <summary>
/// 通過存儲過程返回DataSet
/// </summary>
/// <param name="ProcedureName">存儲過程名稱</param>
/// <returns>DataSet</returns>
public static DataSet GetDataSetByProcedure(string ProcedureName)
{
SqlDataAdapter da = new SqlDataAdapter();
DataSet ds = new DataSet();
try
{
ConnectionOpen();
comm.CommandType = CommandType.StoredProcedure;
comm.CommandText = ProcedureName;
comm.Parameters.Clear();
da.SelectCommand = comm;
da.Fill(ds);
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
return ds;
}

/// <summary>
/// 返回指定sql語句的DataTable
/// </summary>
/// <param name="sqlstr">傳入的Sql語句</param>
/// <returns>DataTable</returns>
public static DataTable GetDataTableBySQL(string SqlString)
{
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
try
{
ConnectionOpen();
comm.CommandType = CommandType.Text;
comm.CommandText = SqlString;
da.SelectCommand = comm;
da.Fill(dt);
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
return dt;
}

/// <summary>
/// 根據存儲過程返回DataTable
/// </summary>
/// <param name="ProcedureName">存儲過程名</param>
/// <param name="coll">SqlParameter集合</param>
/// <returns>DataTable</returns>
public static DataTable GetDataTableByProcedure(string ProcedureName, params SqlParameter[] coll)
{
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
try
{
ConnectionOpen();
comm.Parameters.Clear();
comm.CommandType = CommandType.StoredProcedure;
comm.CommandText = ProcedureName;
for (int i = 0; i < coll.Length; i++)
{
comm.Parameters.Add(coll[i]);
}
da.SelectCommand = comm;
da.Fill(dt);
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
return dt;
}

/// <summary>
/// 根據存儲過程返回DataTable
/// </summary>
/// <param name="ProcedureName">存儲過程名稱</param>
/// <returns>DataTable</returns>
public static DataTable GetDataTableByProcedure(string ProcedureName)
{
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
try
{
ConnectionOpen();
comm.Parameters.Clear();
comm.CommandType = CommandType.StoredProcedure;
comm.CommandText = ProcedureName;
da.SelectCommand = comm;
da.Fill(dt);
}
catch (Exception ex)
{
try
{
ConnectionClose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
throw new Exception(ex.Message);
}
finally
{
ConnectionClose();
}
return dt;
}
}

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