C#VS2010连接数据库大全

C#VS2010连接数据库大全 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Configuration; using System.Data.SqlClient; using System.Data; using System.Collections; using System.Data.OracleClie

C#VS2010连接数据库大全

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
using System.Collections;
using System.Data.OracleClient;
using System.Data.OleDb;

namespace SystemFramework
{
public class DataBaseLayer
{
private string connectionString;
private string dbType;

public string DbType
{
get { return dbType; }
set { dbType = value; }
}

public string ConnectionString
{
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";
}
}
}

public DataBaseLayer(string strConnect, string dataType)
{
this.connectionString = strConnect;
this.DbType = dataType;
}

#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

#region 创建 Connection 和 Command

private IDbConnection GetConnection()
{
switch (this.DbType)
{
case "SqlServer":
return new System.Data.SqlClient.SqlConnection(this.connectionString);

case "Oracle":
return new System.Data.OracleClient.OracleConnection(this.connectionString);

case "Access":
return new System.Data.OleDb.OleDbConnection(this.connectionString);
default:
return new System.Data.SqlClient.SqlConnection(this.connectionString);
}
}

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

#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.Connection = iConn;
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

#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

#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;
}

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);
}
}
#endregion
}
}