求一个.net调用存储过程的通用类！和调用方法！！急在线等待！

[slg2003]

现在我公司许要让我调用 oracle的存储过程！！
我现在希望把调用方法。写成一个通用DB类！！
在网上找了半天都没有合适。
希望。net高手能提供一个通用的调用存储过程的类和如何使用它的方法。
如果能有一个例子最好了！！
谢谢了

[flashlove2008]

/// <summary>
/// 是否存在该记录
/// </summary>
public bool Exists(int AN_ID)
{
SqlParameter[] parameters = {
new SqlParameter("@AN_ID", SqlDbType.Int,4)};
parameters[0].Value = AN_ID;

object obj = SqlHelper.ExecuteScalar(Configuration.ConnectionString, CommandType.StoredProcedure, "UP_YXShop_AccountNote_Exists", parameters);
if (obj != null)
return true;
else
return false;
}

[liuyeede]

在PetShop中有OracleHelper.cs,我把它的代码给你贴上。

using System;
using System.Configuration;
using System.Data;
using System.Data.OracleClient;
using System.Collections;

namespace PetShop.DBUtility {

    /// <summary>
    /// A helper class used to execute queries against an Oracle database
    /// </summary>
    public abstract class OracleHelper {

        // Read the connection strings from the configuration file
        public static readonly string ConnectionStringLocalTransaction = ConfigurationManager.ConnectionStrings["OraConnString1"].ConnectionString;
        public static readonly string ConnectionStringInventoryDistributedTransaction = ConfigurationManager.ConnectionStrings["OraConnString2"].ConnectionString;
        public static readonly string ConnectionStringOrderDistributedTransaction = ConfigurationManager.ConnectionStrings["OraConnString3"].ConnectionString;
		public static readonly string ConnectionStringProfile = ConfigurationManager.ConnectionStrings["OraProfileConnString"].ConnectionString;
		public static readonly string ConnectionStringMembership = ConfigurationManager.ConnectionStrings["OraMembershipConnString"].ConnectionString;

        //Create a hashtable for the parameter cached
        private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());

        /// <summary>
        /// Execute a database query which does not include a select
        /// </summary>
        /// <param name="connString">Connection string to database</param>
        /// <param name="cmdType">Command type either stored procedure or SQL</param>
        /// <param name="cmdText">Acutall SQL Command</param>
        /// <param name="commandParameters">Parameters to bind to the command</param>
        /// <returns></returns>
        public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters) {
            // Create a new Oracle command
            OracleCommand cmd = new OracleCommand();

            //Create a connection
            using (OracleConnection connection = new OracleConnection(connectionString)) {

                //Prepare the command
                PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);

                //Execute the command
                int val = cmd.ExecuteNonQuery();
                cmd.Parameters.Clear();
                return val;
            }
        }

        /// <summary>
        /// Execute an OracleCommand (that returns no resultset) against an existing database transaction 
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:  
        ///  int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders", new OracleParameter(":prodid", 24));
        /// </remarks>
        /// <param name="trans">an existing database transaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of OracleParamters used to execute the command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(OracleTransaction trans, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters) {
            OracleCommand cmd = new OracleCommand();
            PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
            int val = cmd.ExecuteNonQuery();
            cmd.Parameters.Clear();
            return val;
        }

        /// <summary>
        /// Execute an OracleCommand (that returns no resultset) against an existing database connection 
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:  
        ///  int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new OracleParameter(":prodid", 24));
        /// </remarks>
        /// <param name="conn">an existing database connection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of OracleParamters used to execute the command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(OracleConnection connection, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters) {

            OracleCommand cmd = new OracleCommand();

            PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
            int val = cmd.ExecuteNonQuery();
            cmd.Parameters.Clear();
            return val;
        }

[liuyeede]

        /// <summary>
        /// Execute a select query that will return a result set
        /// </summary>
        /// <param name="connString">Connection string</param>
        //// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of OracleParamters used to execute the command</param>
        /// <returns></returns>
        public static OracleDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters) {

            //Create the command and connection
            OracleCommand cmd = new OracleCommand();
            OracleConnection conn = new OracleConnection(connectionString);

            try {
                //Prepare the command to execute
                PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);

                //Execute the query, stating that the connection should close when the resulting datareader has been read
                OracleDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                cmd.Parameters.Clear();
                return rdr;

            }
            catch {

                //If an error occurs close the connection as the reader will not be used and we expect it to close the connection
                conn.Close();
                throw;
            }
        }

        /// <summary>
        /// Execute an OracleCommand that returns the first column of the first record against the database specified in the connection string 
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:  
        ///  Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new OracleParameter(":prodid", 24));
        /// </remarks>
        /// <param name="connectionString">a valid connection string for a SqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of OracleParamters used to execute the command</param>
        /// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns>
        public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters) {
            OracleCommand cmd = new OracleCommand();

            using (OracleConnection conn = new OracleConnection(connectionString)) {
                PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
                object val = cmd.ExecuteScalar();
                cmd.Parameters.Clear();
                return val;
            }
        }

		
		///	Execute	a OracleCommand (that returns a 1x1 resultset)	against	the	specified SqlTransaction
		///	using the provided parameters.
		
		///	<param name="transaction">A	valid SqlTransaction</param>
		///	<param name="commandType">The CommandType (stored procedure, text, etc.)</param>
		///	<param name="commandText">The stored procedure name	or PL/SQL command</param>
		///	<param name="commandParameters">An array of	OracleParamters used to execute the command</param>
		///	<returns>An	object containing the value	in the 1x1 resultset generated by the command</returns>
		public static object ExecuteScalar(OracleTransaction transaction, CommandType commandType, string commandText, params OracleParameter[] commandParameters) {
			if(transaction == null)
				throw new ArgumentNullException("transaction");
			if(transaction != null && transaction.Connection == null)
				throw new ArgumentException("The transaction was rollbacked	or commited, please	provide	an open	transaction.", "transaction");

			// Create a	command	and	prepare	it for execution
			OracleCommand cmd = new OracleCommand();

			PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);

			// Execute the command & return	the	results
			object retval = cmd.ExecuteScalar();

			// Detach the SqlParameters	from the command object, so	they can be	used again
			cmd.Parameters.Clear();
			return retval;
		}

        /// <summary>
        /// Execute an OracleCommand that returns the first column of the first record against an existing database connection 
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:  
        ///  Object obj = ExecuteScalar(conn, CommandType.StoredProcedure, "PublishOrders", new OracleParameter(":prodid", 24));
        /// </remarks>
        /// <param name="conn">an existing database connection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of OracleParamters used to execute the command</param>
        /// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns>
        public static object ExecuteScalar(OracleConnection connectionString, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters) {
            OracleCommand cmd = new OracleCommand();

            PrepareCommand(cmd, connectionString, null, cmdType, cmdText, commandParameters);
            object val = cmd.ExecuteScalar();
            cmd.Parameters.Clear();
            return val;
        }

        /// <summary>
        /// Add a set of parameters to the cached
        /// </summary>
        /// <param name="cacheKey">Key value to look up the parameters</param>
        /// <param name="commandParameters">Actual parameters to cached</param>
        public static void CacheParameters(string cacheKey, params OracleParameter[] commandParameters) {
            parmCache[cacheKey] = commandParameters;
        }

 

[liuyeede]

       /// <summary>
        /// Fetch parameters from the cache
        /// </summary>
        /// <param name="cacheKey">Key to look up the parameters</param>
        /// <returns></returns>
        public static OracleParameter[] GetCachedParameters(string cacheKey) {
            OracleParameter[] cachedParms = (OracleParameter[])parmCache[cacheKey];

            if (cachedParms == null)
                return null;

            // If the parameters are in the cache
            OracleParameter[] clonedParms = new OracleParameter[cachedParms.Length];

            // return a copy of the parameters
            for (int i = 0, j = cachedParms.Length; i < j; i++)
                clonedParms[i] = (OracleParameter)((ICloneable)cachedParms[i]).Clone();

            return clonedParms;
        }

        /// <summary>
        /// Internal function to prepare a command for execution by the database
        /// </summary>
        /// <param name="cmd">Existing command object</param>
        /// <param name="conn">Database connection object</param>
        /// <param name="trans">Optional transaction object</param>
        /// <param name="cmdType">Command type, e.g. stored procedure</param>
        /// <param name="cmdText">Command test</param>
        /// <param name="commandParameters">Parameters for the command</param>
        private static void PrepareCommand(OracleCommand cmd, OracleConnection conn, OracleTransaction trans, CommandType cmdType, string cmdText, OracleParameter[] commandParameters) {

            //Open the connection if required
            if (conn.State != ConnectionState.Open)
                conn.Open();

            //Set up the command
            cmd.Connection = conn;
            cmd.CommandText = cmdText;
            cmd.CommandType = cmdType;

            //Bind it to the transaction if it exists
            if (trans != null)
                cmd.Transaction = trans;

            // Bind the parameters passed in
            if (commandParameters != null) {
                foreach (OracleParameter parm in commandParameters)
                    cmd.Parameters.Add(parm);
            }
        }

		/// <summary>
		/// Converter to use boolean data type with Oracle
		/// </summary>
		/// <param name="value">Value to convert</param>
		/// <returns></returns>
		public static string OraBit(bool value) {
			if(value)
				return "Y";
			else
				return "N";
		}

		/// <summary>
		/// Converter to use boolean data type with Oracle
		/// </summary>
		/// <param name="value">Value to convert</param>
		/// <returns></returns>
		public static bool OraBool(string value) {
			if(value.Equals("Y"))
				return true;
			else
				return false;
		} 
    }
}

[firewolffeng]

浏览了一下，以上所有的类库创建参数的时候都没考虑到Oracle中Clob和Blob的特殊性，如果Clob或Blob数据过大，会造成更新或插入错误

[slg2003]

求教！！急急！！

[阿云ivan]

Microsoft Enterprise Library

[slg2003]

最少您老也在给我个连接什么的
最好能有实例
现在就能用

[che2piaopiao]

去google下

[zuoming120]

配置文件
<appSettings>
<add key="ConnString" value="user id=scott;data source=test;password=tiger"/>
</appSettings>
。
引用 using System.Data.OracleClient;


后台代码
string strCn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"].ToString();

string strSql="select * from BILLS where name='"+txtname.Text+"' and amount='"+txtcha.Text+"'";
OracleConnection cn=new OracleConnection(strCn);


cn.Open();
OracleCommand cm= new OracleCommand();
cm.Connection=cn;
cm.CommandText=strSql;
OracleDataReader rs=cm.ExecuteReader();
if(rs.Read())
{
Response.Write("连接成功！");
}
else
Response.Write("用户名或密码有误!");