c#操作oracle，有没有类似sqlhelp之类的通用操作类
自己写怕有遗漏环节，请教下大家，你们以前做oracle数据库的时候，数据库操作层都是怎么做的。
有么有用通用的操作类工具来生成类语句呢？谢谢了。
[解决办法]
sqlhelp 就可以应用 在 oracle 中啊
[解决办法]
当然，现关的 ado.net 对象 要换成 oracle 对应的
[解决办法]
其实都一样，添加System.Data.OracleClient引用
把sqlhelp中的SqlConnection,SqlCommand什么的改成OracleConnection，OracleCommand.
就行了，大部分对象用途都差不多，，小改下就可以了。。
[解决办法]
- C# code
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OracleClient;
using CommLB.wmj.AllExceptionsCatch.ExceptionObjs;
namespace CommLB.wmj.AllDataProdivers.Command
{
/// <summary>
/// OracleDataProvider 的摘要说明
/// </summary>
internal class OracleDataProvider : CommLB.wmj.AllDataProdivers.CommandOfInterface.IDataProvider
{
private System.Data.OracleClient.OracleConnection oracleConnection;
private System.Data.OracleClient.OracleCommand oracleCommand;
private string connectionString;
public OracleDataProvider()
: this(null)
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public OracleDataProvider(string connectionString)
{
if (connectionString == null || connectionString.Trim() == string.Empty)
{
System.Configuration.AppSettingsReader configurationAppSettings = new System.Configuration.AppSettingsReader();
this.connectionString = (string)(configurationAppSettings.GetValue("oracleConnectionString", typeof(string)));
}
else
{
this.connectionString = connectionString;
}
}
/// <summary>
/// Oracle 连接字符串 "User Id=southfence;Data Source=FENCEORA;Password=southfence;Persist Security Info=true;"
/// </summary>
public string ConnectionString
{
get
{
return this.connectionString;
}
set
{
this.connectionString = value;
}
}
/// <summary>
/// 返回一个带有连接字符串的Oracle Connection.
/// </summary>
/// <returns>OracleConnection </returns>
private OracleConnection GetOracleConnection()
{
try
{
return new OracleConnection(this.connectionString);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 对于 UPDATE、INSERT 和 DELETE 语句，返回值为该命令所影响的行数。对于其他所有类型的语句，返回值为 -1
/// </summary>
/// <param name="Sql">UPDATE、INSERT 和 DELETE 语句 </param>
public int ExecuteNonQuery(string sql)
{
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return -1;
int rv = -1;
OracleTransaction oracleTransaction = null;
try
{
if (oracleConnection.State == System.Data.ConnectionState.Closed)
oracleConnection.Open();
oracleCommand = new OracleCommand(sql, oracleConnection);
oracleTransaction = oracleConnection.BeginTransaction();
oracleCommand.Transaction = oracleTransaction;
rv = oracleCommand.ExecuteNonQuery();
oracleTransaction.Commit();
}
catch (Exception ex)
{
oracleTransaction.Rollback();
rv = -1;
throw ex;
}
return rv;
}
}
/// <summary>
/// 执行查询，并将查询返回的结果集中第一行的第一列作为 .NET Framework 数据类型返回。忽略额外的列或行。
/// </summary>
/// <param name="sql">SELECT 语句 </param>
/// <returns>.NET Framework 数据类型形式的结果集第一行的第一列；如果结果集为空或结果为 REF CURSOR，则为空引用 </returns>
public object ExecuteScalar(string sql)
{
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return null;
try
{
if (oracleConnection.State == System.Data.ConnectionState.Closed)
oracleConnection.Open();
oracleCommand = new OracleCommand(sql, oracleConnection);
return oracleCommand.ExecuteScalar();
}
catch (Exception ex)
{
throw ex;
}
}
}
/// <summary>
/// 执行单Sql语句查询，并将查询返回的结果作为一个数据集返回
/// </summary>
/// <param name="selectSql">SELECT 语句 </param>
/// <returns>数据集 DataSet </returns>
public DataSet RetriveDataSet(string sql)
{
if (sql == null || sql == string.Empty)
{
throw new Exception("抱歉，SQL 语句为空...");
}
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return null;
using (OracleDataAdapter da = new OracleDataAdapter(sql, oracleConnection))
{
DataSet ds = new DataSet();
try
{
da.Fill(ds);
}
catch (Exception ex)
{
throw ex;
}
return ds;
}
}
}
/// <summary>
/// 执行Sql数组语句查询，并将查询返回的结果作为一个数据集返回
/// </summary>
/// <param name="sql">Select 语句数组 </param>
/// <param name="tableName">TableName </param>
/// <returns>数据集 DataSet </returns>
public DataSet RetriveDataSet(string[] sqls, params string[] tableNames)
{
if (sqls == null || sqls.Length == 0)
{
throw new Exception("抱歉，SQL 语句为空...");
}
int sqlLength;
sqlLength = sqls.Length;
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return null;
DataSet ds = new DataSet();
int tableNameLength = tableNames.Length;
for (int i = 0; i < sqlLength; i++)
{
using (OracleDataAdapter da = new OracleDataAdapter(sqls[i], oracleConnection))
{
try
{
if (i < tableNameLength)
da.Fill(ds, tableNames[i]);
else
da.Fill(ds, "table" + i);
}
catch (Exception ex)
{
throw ex;
}
}
}
return ds;
}
}
public DataSet RetriveDataSet(string[,] sql_tableNames)
{
if (sql_tableNames.GetLength(0) != 2)
{
throw new Exception("抱歉，SQL语句-表名 参数必须为二维数组...");
}
int length = sql_tableNames.GetLength(1);
if (length <= 0)
{
throw new Exception("抱歉，SQL语句-表名 为空...");
}
string[] sqls = new string[length];
string[] tableNames = new string[length];
for (int i = 0; i < length; i++)
{
sqls[i] = sql_tableNames[i, 0];
tableNames[i] = sql_tableNames[i, 1];
}
return RetriveDataSet(sqls, tableNames);
}
给你参考下
[解决办法]
接上
- C# code
/// <summary>
/// 更新数据集.
/// 过程:客户层(dataSet.GetChanges()) -- 修改 --> 数据服务层(hasChangesDataSet.update()) -- 更新--> 数据层(hasChangesDataSet) ...
/// 数据层(hasChangesDataSet) -- 新数据 --> 数据服务层 (hasChangesDataSet) -- 合并 -- > 客户层(dataSet.Merge(hasChangesDataSet))
/// </summary>
/// <param name="hasChangeDataSet"> </param>
/// <returns> </returns>
public DataSet UpdateDataSet(string sql, DataSet hasChangesDataSet)
{
if (sql == null || sql == string.Empty)
{
throw new Exception("抱歉，SQL 语句为空...");
}
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return null;
using (OracleDataAdapter da = new OracleDataAdapter(sql, oracleConnection))
{
try
{
OracleCommandBuilder cb = new OracleCommandBuilder(da);
da.Update(hasChangesDataSet);
}
catch (Exception ex)
{
throw ex;
}
return hasChangesDataSet;
}
}
}
/// <summary>
/// 将一组 UPDATE、INSERT 和 DELETE 语句以事务执行
/// </summary>
/// <param name="sqls"> </param>
/// <returns>是否执行成功 </returns>
public bool ExecuteTransaction(string[] sqls)
{
if (sqls == null || sqls.Length == 0)
{
throw new Exception("抱歉，SQL 语句为空...");
}
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return false;
OracleTransaction oracleTransaction = null;
try
{
if (oracleConnection.State == System.Data.ConnectionState.Closed)
oracleConnection.Open();
oracleCommand = oracleConnection.CreateCommand();
oracleTransaction = oracleConnection.BeginTransaction();
oracleCommand.Connection = oracleConnection;
oracleCommand.Transaction = oracleTransaction;
for (int i = 0; i < sqls.Length; i++)
{
oracleCommand.CommandText = sqls[i];
oracleCommand.ExecuteNonQuery();
}
oracleTransaction.Commit();
return true;
}
catch (Exception ex)
{
if (oracleTransaction != null)
oracleTransaction.Rollback();
throw ex;
}
}
}
public bool ExecuteTransaction(string[] sqls, object[][] myParams)
{
throw new Exception("抱歉，未实现...");
}
/// <summary>
/// 执行Sql数组语句查询，并将查询返回的结果作为一个数据读取器返回
/// </summary>
/// <param name="sql"> </param>
/// <returns>OracleDataReader </returns>
public OracleDataReader RetriveDataReader(string sql)
{
if (sql == null || sql == string.Empty)
{
throw new Exception("抱歉，SQL 语句为空...");
}
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return null;
using (oracleCommand = new OracleCommand(sql, oracleConnection))
{
try
{
OracleDataReader oracleDataReader = oracleCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
return oracleDataReader;
}
catch (Exception ex)
{
throw ex;
}
}
}
}
/// <summary>
/// 执行一个查询式的存贮过程,返回得到的数据集
/// </summary>
/// <param name="proceName">存贮过程名称 </param>
/// <param name="myParams">所有属性值 </param>
/// <returns> </returns>
public DataSet ExecStoredProcedure(string proceName, object[] myParams)
{
if (proceName == null || proceName == string.Empty)
{
throw new Exception("抱歉，存贮过程名称为空...");
}
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
return null;
DataSet ds = new DataSet();
try
{
if (oracleConnection.State == System.Data.ConnectionState.Closed)
oracleConnection.Open();
oracleCommand = oracleConnection.CreateCommand();
oracleCommand.CommandType = CommandType.StoredProcedure;
oracleCommand.CommandText = proceName;
if (myParams != null)
{
for (int i = 0; i < myParams.Length; i++)
oracleCommand.Parameters.Add((OracleParameter)myParams[i]);
}
using (OracleDataAdapter da = new OracleDataAdapter(oracleCommand))
{
int returnValue = da.Fill(ds);
if (returnValue < 0)
throw new Exception("存储过程执行错误:" + (returnValue >= -14 ?
((StoreProcReturn)returnValue).ToString() : "ErrCode:" + returnValue));
return ds;
}
}
catch (Exception ex)
{
throw ex;
}
}
}
/// <summary>
/// 执行一个非查询式的存贮过程
/// </summary>
/// <param name="proceName">存贮过程名称 </param>
/// <param name="myParams">所有属性值 </param>
/// <returns>存储过程return值 </returns>
public int ExecNonQueryStoredProcedure(string proceName, ref object[] myParams)
{
if (proceName == null || proceName == string.Empty)
{
throw new Exception("抱歉，存贮过程名称为空...");
}
using (oracleConnection = this.GetOracleConnection())
{
if (oracleConnection == null)
throw new Exception("抱歉，数据库连接没有初始化...");
try
{
if (oracleConnection.State == System.Data.ConnectionState.Closed)
oracleConnection.Open();
oracleCommand = oracleConnection.CreateCommand();
oracleCommand.CommandType = CommandType.StoredProcedure;
oracleCommand.CommandText = proceName;
if (myParams != null)
{
for (int i = 0; i < myParams.Length; i++)
oracleCommand.Parameters.Add((OracleParameter)myParams[i]);
}
int returnValue = oracleCommand.ExecuteNonQuery();
if (returnValue < 0)
throw new Exception("存储过程执行错误:" + (returnValue >= -14 ?
((StoreProcReturn)returnValue).ToString() : "ErrCode:" + returnValue));
return returnValue;
}
catch (Exception ex)
{
throw ex;
}
}
}
public void Dispose()
{
this.connectionString = null;
if (this.oracleCommand != null)
this.oracleCommand.Dispose();
if (this.oracleConnection != null)
this.oracleConnection.Dispose();
}
}
}
[解决办法]
- C# code
using System;using System.Data;using System.Data.OracleClient; class Sample{ public static void Main() { string myConnString = "user id=zk;data source=zkqx;password=*****"; OracleConnection myConnection = new OracleConnection(myConnString); OracleCommand catCMD = myConnection.CreateCommand(); catCMD.CommandText = " SELECT CZYDM,CZYMC,CZYMM,CZYQX FROM ZC_CZY "; myConnection.Open(); OracleDataReader myReader = catCMD.ExecuteReader(); while (myReader.Read()) { Console.WriteLine("\t{0}\t{1}\t{2}\t{3}", myReader.GetString(0),myReader.GetString(1),myReader.GetString(2),myReader.GetString(3)); } myReader.Close(); myConnection.Close(); }}
[解决办法]
PetShop里似乎有吧，抠出来用就是了。
其实这个通用类也很简单，无非是封装增、删、改、查操作的几个方法，可以支持文本化SQL语句，参数化SQL语句、存储过程这种方式。很简单的，照着SQL Server的你就可以仿照着写出来了。
[解决办法]
参考
很详细。
[解决办法]