本篇文章主要介绍了"C#NET万能数据库访问封装类ACCESS、SQLServer、Oracle"，主要涉及到Exception,索引,存储过程,Dictionary方面的内容，对于.NETjrs看球网直播吧_低调看直播体育app软件下载_低调看体育直播感兴趣的同学可以参考一下：
using System;using System.Collections;using System.Collections.Specialized;using...
using System;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Data.OracleClient;
using System.Configuration;
using System.Reflection;
namespace SystemFramework.DAL
{
/**////
/// All rights reserved
/// 数据访问基础类
/// 用户可以修改满足自己项目的需要。
/// public class DataBaseLayer
{
//数据库连接字符串(web.config来配置)
//
private string connectionString;
public string ConntionString
{
get
{
return connectionString ;
}
set
{
connectionString = value;
}
}
public DataBaseLayer(string strConnect,string dataType)
{
this.ConntionString = strConnect;
this.DbType = dataType;
}
public DataBaseLayer()
{
this.connectionString = ConfigurationSettings.AppSettings["ConnectionString"] ;
this.dbType = ConfigurationSettings.AppSettings["DataType"] ;
//this.connectionString = "data source=192.168.1.43;user id=sa;pwd=sa;database=temphrdb";
//this.dbType = "SqlServer";
}
/**////
/// 数据库类型
/// private string dbType;
public string DbType
{
get
{
if ( dbType == string.Empty || dbType == null )
{
return "Access";
}
else
{
return dbType;
}
}
set
{
if ( value != string.Empty && value != null )
{
dbType = value;
}
if (dbType ==string.Empty || dbType == null)
{
dbType = ConfigurationSettings.AppSettings["DataType"];
}
if ( dbType == string.Empty || dbType == null )
{
dbType = "Access";
}
}
}
#region 转换参数
private System.Data.IDbDataParameter iDbPara(string ParaName,string DataType)
{
switch(this.DbType)
{
case "SqlServer":
return GetSqlPara(ParaName,DataType);
case "Oracle":
return GetOleDbPara(ParaName,DataType);
case "Access":
return GetOleDbPara(ParaName,DataType);
default :
return GetSqlPara(ParaName,DataType);
}
}
private System.Data.SqlClient.SqlParameter GetSqlPara( string ParaName , string DataType)
{
switch(DataType)
{
case "Decimal":
return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.Decimal );
case "Varchar":
return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.VarChar );
case "DateTime":
return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.DateTime );
case "Iamge":
return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.Image );
case "Int":
return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.Int );
case "Text":
return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.NText );
default :
return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.VarChar );
}
}
private System.Data.OracleClient.OracleParameter GetOraclePara( string ParaName , string DataType)
{
switch(DataType)
{
case "Decimal":
return new System.Data.OracleClient.OracleParameter( ParaName, System.Data.OracleClient.OracleType.Double);
case "Varchar":
return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.VarChar );
case "DateTime":
return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.DateTime );
case "Iamge":
return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.BFile );
case "Int":
return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.Int32 );
case "Text":
return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.LongVarChar );
default:
return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.VarChar );
}
}
private System.Data.OleDb.OleDbParameter GetOleDbPara( string ParaName , string DataType)
{
switch(DataType)
{
case "Decimal":
return new System.Data.OleDb.OleDbParameter( ParaName, System.Data.DbType.Decimal);
case "Varchar":
return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.String );
case "DateTime":
return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.DateTime );
case "Iamge":
return new System.Data.OleDb.OleDbParameter( ParaName, System.Data.DbType.Binary );
case "Int":
return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.Int32 );
case "Text":
return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.String );
default:
return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.String );
}
}
#endregion
创建 Connection 和 Command#region 创建 Connection 和 Command
private IDbConnection GetConnection()
{
switch(this.DbType)
{
case "SqlServer":
return new System.Data.SqlClient.SqlConnection(this.ConntionString);
case "Oracle":
return new System.Data.OracleClient.OracleConnection(this.ConntionString);
case "Access":
return new System.Data.OleDb.OleDbConnection(this.ConntionString);
default:
return new System.Data.SqlClient.SqlConnection(this.ConntionString);
}
}
private IDbCommand GetCommand(string Sql,IDbConnection iConn)
{
switch(this.DbType)
{
case "SqlServer":
return new System.Data.SqlClient.SqlCommand(Sql,(SqlConnection)iConn);
case "Oracle":
return new System.Data.OracleClient.OracleCommand(Sql,(OracleConnection)iConn);
case "Access":
return new System.Data.OleDb.OleDbCommand(Sql,(OleDbConnection)iConn);
default:
return new System.Data.SqlClient.SqlCommand(Sql,(SqlConnection)iConn);
}
}
private IDbCommand GetCommand()
{
switch(this.DbType)
{
case "SqlServer":
return new System.Data.SqlClient.SqlCommand();
case "Oracle":
return new System.Data.OracleClient.OracleCommand();
case "Access":
return new System.Data.OleDb.OleDbCommand();
default:
return new System.Data.SqlClient.SqlCommand();
}
}
private IDataAdapter GetAdapater(string Sql,IDbConnection iConn)
{
switch(this.DbType)
{
case "SqlServer":
return new System.Data.SqlClient.SqlDataAdapter(Sql,(SqlConnection)iConn);
case "Oracle":
return new System.Data.OracleClient.OracleDataAdapter(Sql,(OracleConnection)iConn);
case "Access":
return new System.Data.OleDb.OleDbDataAdapter(Sql,(OleDbConnection)iConn);
default:
return new System.Data.SqlClient.SqlDataAdapter(Sql,(SqlConnection)iConn);;
}
}
private IDataAdapter GetAdapater()
{
switch(this.DbType)
{
case "SqlServer":
return new System.Data.SqlClient.SqlDataAdapter();
case "Oracle":
return new System.Data.OracleClient.OracleDataAdapter();
case "Access":
return new System.Data.OleDb.OleDbDataAdapter();
default:
return new System.Data.SqlClient.SqlDataAdapter();
}
}
private IDataAdapter GetAdapater(IDbCommand iCmd)
{
switch(this.DbType)
{
case "SqlServer":
return new System.Data.SqlClient.SqlDataAdapter((SqlCommand)iCmd);
case "Oracle":
return new System.Data.OracleClient.OracleDataAdapter((OracleCommand)iCmd);
case "Access":
return new System.Data.OleDb.OleDbDataAdapter((OleDbCommand)iCmd);
default:
return new System.Data.SqlClient.SqlDataAdapter((SqlCommand)iCmd);
}
}
#endregion
执行简单SQL语句#region 执行简单SQL语句
/**////
/// 执行SQL语句，返回影响的记录数
/// ///
SQL语句
///
影响的记录数 public int ExecuteSql(string SqlString)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
using (System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn))
{
iConn.Open();
try
{
int rows=iCmd.ExecuteNonQuery();
return rows;
}
catch(System.
Exception E)
{
throw new
Exception(E.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行多条SQL语句，实现数据库事务。
/// ///
多条SQL语句
public void ExecuteSqlTran(ArrayList SQLStringList)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
iConn.Open();
using(System.Data.IDbCommand iCmd = GetCommand())
{
iCmd.C
using(System.Data.IDbTransaction iDbTran = iConn.BeginTransaction())
{
iCmd.Transaction=iDbTran;
try
{
for(int n=0;n<>
{
string strsql = SQLStringList[n].ToString();
if ( strsql.Trim().Length>1)
{
iCmd.CommandText = strsql;
iCmd.ExecuteNonQuery();
}
}
iDbTran.Commit();
}
catch(System.
Exception E)
{
iDbTran.Rollback();
throw new
Exception(E.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
}
/**////
/// 执行带一个存储过程参数的的SQL语句。
/// ///
SQL语句
///
参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加
///
影响的记录数 public int ExecuteSql(string SqlString,string content)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
using(System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn))
{
System.Data.IDataParameter myParameter = this.iDbPara( "@content", "Text");
myParameter.Value = content ;
iCmd.Parameters.Add(myParameter);
iConn.Open();
try
{
int rows = iCmd.ExecuteNonQuery();
return rows;
}
catch( System.
Exception e )
{
throw new
Exception(e.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
/// ///
SQL语句
///
图像字节,数据库的字段类型为image的情况
///
影响的记录数 public int ExecuteSqlInsertImg(string SqlString,byte[] fs)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
using(System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn))
{
System.Data.IDataParameter myParameter = this.iDbPara( "@content", "Image");
myParameter.Value = fs ;
iCmd.Parameters.Add(myParameter);
iConn.Open();
try
{
int rows = iCmd.ExecuteNonQuery();
return rows;
}
catch( System.
Exception e )
{
throw new
Exception(e.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// ///
计算查询结果语句
///
查询结果（object） public object GetSingle(string SqlString)
{
using (System.Data.IDbConnection iConn = GetConnection())
{
using (System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn))
{
iConn.Open();
try
{
object obj = iCmd.ExecuteScalar();
if((Object.Equals(obj,null))||(Object.Equals(obj,System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch(System.
Exception e)
{
throw new
Exception(e.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行查询语句，返回IDataAdapter
/// ///
查询语句
///
IDataAdapter public IDataAdapter ExecuteReader(string strSQL)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
iConn.Open();
try
{
System.Data.IDataAdapter iAdapter = this.GetAdapater(strSQL,iConn);
return iAdapter;
}
catch(System.
Exception e)
{
throw new
Exception(e.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
/**////
/// 执行查询语句，返回DataSet
/// ///
查询语句
///
DataSet public DataSet Query(string sqlString)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
using(System.Data.IDbCommand iCmd = GetCommand(sqlString,iConn))
{
DataSet ds = new DataSet();
iConn.Open();
try
{
System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn);
iAdapter.Fill(ds);
return ds;
}
catch(System.
Exception ex)
{
throw new
Exception(ex.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行查询语句，返回DataSet
/// ///
查询语句
///
要填充的DataSet
///
要填充的表名
///
DataSet public DataSet Query(string sqlString,DataSet dataSet,string tableName)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
using(System.Data.IDbCommand iCmd = GetCommand(sqlString,iConn))
{
iConn.Open();
try
{
System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn);
((OleDbDataAdapter)iAdapter).Fill(dataSet,tableName);
return dataSet;
}
catch(System.
Exception ex)
{
throw new
Exception(ex.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行SQL语句 返回存储过程
/// ///
Sql语句
///
要填充的DataSet
///
开始记录
///
页面记录大小
///
表名称
///
DataSet public DataSet Query(string sqlString , DataSet dataSet ,int startIndex ,int pageSize, string tableName )
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
iConn.Open();
try
{
System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn);
((OleDbDataAdapter)iAdapter).Fill(dataSet,startIndex,pageSize,tableName);
return dataSet;
}
catch(
Exception ex)
{
throw new
Exception(ex.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
/**////
/// 执行查询语句，向XML文件写入数据
/// ///
查询语句
///
XML文件路径
public void WriteToXml(string sqlString,string xmlPath)
{
Query(sqlString).WriteXml(xmlPath);
}
/**////
/// 执行查询语句
/// ///
查询语句
///
DataTable public DataTable ExecuteQuery(string sqlString)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
//System.Data.IDbCommand iCmd = GetCommand(sqlString,iConn);
DataSet ds = new DataSet();
try
{
System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn);
iAdapter.Fill(ds);
}
catch(System.
Exception e)
{
throw new
Exception(e.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
return ds.Tables[0];
}
}
/**////
/// 执行查询语句
/// ///
查询语句
///
DataTable public DataTable ExecuteQuery(string SqlString,string Proc)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
using(System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn))
{
iCmd.CommandType = CommandType.StoredProcedure;
DataSet ds = new DataSet();
try
{
System.Data.IDataAdapter iDataAdapter = this.GetAdapater(SqlString,iConn);
iDataAdapter.Fill(ds);
}
catch(System.
Exception e)
{
throw new
Exception(e.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
return ds.Tables[0];
}
}
}
/**////
///
/// ///
///
public DataView ExeceuteDataView(string Sql)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
using(System.Data.IDbCommand iCmd = GetCommand(Sql,iConn))
{
DataSet ds = new DataSet();
try
{
System.Data.IDataAdapter iDataAdapter = this.GetAdapater(Sql,iConn);
iDataAdapter.Fill(ds);
return ds.Tables[0].DefaultView;
}
catch(System.
Exception e)
{
throw new
Exception(e.Message);
}
finally
{
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
#endregion
执行带参数的SQL语句#region 执行带参数的SQL语句
/**////
/// 执行SQL语句，返回影响的记录数
/// ///
SQL语句
///
影响的记录数 public int ExecuteSql(string SQLString,params IDataParameter[] iParms)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
System.Data.IDbCommand iCmd = GetCommand();
{
try
{
PrepareCommand(out iCmd, iConn, null , SQLString, iParms );
int rows=iCmd.ExecuteNonQuery();
iCmd.Parameters.Clear();
return rows;
}
catch(System.
Exception E)
{
throw new
Exception( E.Message );
}
finally
{
iCmd.Dispose();
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行多条SQL语句，实现数据库事务。
/// ///
SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）
public void ExecuteSqlTran(Hashtable SQLStringList)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
iConn.Open();
using (IDbTransaction iTrans = iConn.BeginTransaction())
{
System.Data.IDbCommand iCmd = GetCommand();
try
{
//循环
foreach (
DictionaryEntry myDE in SQLStringList)
{
string cmdText = myDE.Key.ToString();
IDataParameter[] iParms=( IDataParameter[] ) myDE.Value;
PrepareCommand( out iCmd , iConn , iTrans , cmdText , iParms );
int val = iCmd.ExecuteNonQuery();
iCmd.Parameters.Clear();
}
iTrans.Commit();
}
catch
{
iTrans.Rollback();
throw;
}
finally
{
iCmd.Dispose();
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// ///
计算查询结果语句
///
查询结果（object） public object GetSingle(string SQLString,params IDataParameter[] iParms)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
System.Data.IDbCommand iCmd = GetCommand();
{
try
{
PrepareCommand( out iCmd, iConn, null , SQLString, iParms );
object obj = iCmd.ExecuteScalar();
iCmd.Parameters.Clear();
if((Object.Equals(obj,null))||(Object.Equals(obj,System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch(System.
Exception e)
{
throw new
Exception(e.Message);
}
finally
{
iCmd.Dispose();
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行查询语句，返回IDataReader
/// ///
查询语句
///
IDataReader public IDataReader ExecuteReader(string SQLString,params IDataParameter[] iParms)
{
System.Data.IDbConnection iConn = this.GetConnection();
{
System.Data.IDbCommand iCmd = GetCommand();
{
try
{
PrepareCommand(out iCmd, iConn , null , SQLString , iParms);
System.Data.IDataReader iReader = iCmd.ExecuteReader();
iCmd.Parameters.Clear();
return iReader;
}
catch(System.
Exception e)
{
throw new
Exception(e.Message);
}
finally
{
iCmd.Dispose();
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 执行查询语句，返回DataSet
/// ///
查询语句
///
DataSet public DataSet Query(string sqlString,params IDataParameter[] iParms)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
IDbCommand iCmd = GetCommand();
{
PrepareCommand(out iCmd , iConn , null , sqlString , iParms );
try
{
IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn);
DataSet ds = new DataSet();
iAdapter.Fill(ds);
iCmd.Parameters.Clear();
return ds;
}
catch(System.
Exception ex)
{
throw new
Exception(ex.Message);
}
finally
{
iCmd.Dispose();
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
}
}
}
/**////
/// 初始化Command
/// ///
///
///
///
///
private void PrepareCommand(out IDbCommand iCmd,IDbConnection iConn,System.Data.IDbTransaction iTrans, string cmdText, IDataParameter[] iParms)
{
if (iConn.State != ConnectionState.Open)
iConn.Open();
iCmd = this.GetCommand();
iCmd.Connection = iConn;
iCmd.CommandText = cmdText;
if (iTrans != null)
iCmd.Transaction = iTrans;
iCmd.CommandType = CommandType.Text;//cmdType;
if (iParms != null)
{
foreach (IDataParameter parm in iParms)
iCmd.Parameters.Add(parm);
}
}
#endregion
存储过程操作#region
存储过程操作
/**////
/// 执行存储过程
/// ///
存储过程名
///
存储过程参数
///
SqlDataReader public SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters )
{
System.Data.IDbConnection iConn = this.GetConnection();
{
iConn.Open();
using(SqlCommand sqlCmd = BuildQueryCommand(iConn,storedProcName, parameters))
{
return sqlCmd.ExecuteReader(CommandBehavior.CloseConnection);
}
}
}
/**////
/// 执行存储过程
/// ///
存储过程名
///
存储过程参数
///
DataSet结果中的表名
///
DataSet public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters ,string tableName)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
DataSet dataSet = new DataSet();
iConn.Open();
System.Data.IDataAdapter iDA = this.GetAdapater();
iDA = this.GetAdapater( BuildQueryCommand(iConn, storedProcName, parameters ) );
((SqlDataAdapter)iDA).Fill( dataSet,tableName);
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
return dataSet;
}
}
/**////
/// 执行存储过程
/// ///
存储过程名
///
存储过程参数
///
DataSet结果中的表名
///
开始记录
索引 ///
页面记录大小
///
DataSet public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters ,int startIndex,int pageSize,string tableName)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
DataSet dataSet = new DataSet();
iConn.Open();
System.Data.IDataAdapter iDA = this.GetAdapater();
iDA = this.GetAdapater( BuildQueryCommand(iConn, storedProcName, parameters ) );
((SqlDataAdapter)iDA).Fill( dataSet,startIndex,pageSize,tableName);
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
return dataSet;
}
}
/**////
/// 执行存储过程 填充已经存在的DataSet数据集
/// ///
存储过程名称
///
存储过程参数
///
要填充的数据集
///
要填充的表名
///
public DataSet RunProcedure(string storeProcName,IDataParameter[] parameters,DataSet dataSet,string tableName)
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
iConn.Open();
System.Data.IDataAdapter iDA = this.GetAdapater();
iDA = this.GetAdapater(BuildQueryCommand(iConn,storeProcName,parameters));
((SqlDataAdapter)iDA).Fill(dataSet,tableName);
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
return dataSet;
}
}
/**////
/// 执行存储过程并返回受影响的行数
/// ///
///
///
public int RunProcedureNoQuery(string storedProcName, IDataParameter[] parameters )
{
int result = 0;
using (System.Data.IDbConnection iConn = this.GetConnection())
{
iConn.Open();
using(SqlCommand scmd = BuildQueryCommand(iConn,storedProcName,parameters))
{
result = scmd.ExecuteNonQuery();
}
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
return result ;
}
public string RunProcedureExecuteScalar(string storeProcName,IDataParameter[] parameters)
{
string result = string.Empty;
using (System.Data.IDbConnection iConn = this.GetConnection())
{
iConn.Open();
using(SqlCommand scmd = BuildQueryCommand(iConn,storeProcName,parameters))
{
object obj = scmd.ExecuteScalar();
if(obj == null)
result = null;
else
result = obj.ToString();
}
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
}
return result;
}
/**////
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
/// ///
数据库连接
///
存储过程名
///
存储过程参数
///
SqlCommand private SqlCommand BuildQueryCommand(IDbConnection iConn,string storedProcName, IDataParameter[] parameters)
{
IDbCommand iCmd = GetCommand(storedProcName,iConn);
iCmd.CommandType = CommandType.StoredProcedure;
if (parameters == null)
{
return (SqlCommand)iCmd;
}
foreach (IDataParameter parameter in parameters)
{
iCmd.Parameters.Add( parameter );
}
return (SqlCommand)iCmd;
}
/**////
/// 执行存储过程，返回影响的行数
/// ///
存储过程名
///
存储过程参数
///
影响的行数
///
public int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected )
{
using (System.Data.IDbConnection iConn = this.GetConnection())
{
int result;
iConn.Open();
using(SqlCommand sqlCmd = BuildIntCommand(iConn,storedProcName, parameters ))
{
rowsAffected = sqlCmd.ExecuteNonQuery();
result = (int)sqlCmd.Parameters["ReturnValue"].Value;
if(iConn.State != ConnectionState.Closed)
{
iConn.Close();
}
return result;
}
}
}
/**////
/// 创建 SqlCommand 对象实例(用来返回一个整数值)
/// ///
存储过程名
///
存储过程参数
///
SqlCommand 对象实例 private SqlCommand BuildIntCommand(IDbConnection iConn,string storedProcName, IDataParameter[] parameters)
{
SqlCommand sqlCmd = BuildQueryCommand(iConn,storedProcName, parameters );
sqlCmd.Parameters.Add( new SqlParameter ( "ReturnValue",
SqlDbType.Int,4,ParameterDirection.ReturnValue,
false,0,0,string.Empty,DataRowVersion.Default,null ));
return sqlCmd;
}
#endregion
}
}
以上就介绍了C#NET万能数据库访问封装类ACCESS、SQLServer、Oracle，包括了Exception,索引,存储过程,Dictionary方面的内容，希望对.NETjrs看球网直播吧_低调看直播体育app软件下载_低调看体育直播有兴趣的朋友有所帮助。
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