Я совершенно новый в веб-API. Я создал веб-API просто для извлечения данных из базы данных Oracle с помощью нескольких статей, которые я нашел в Интернете. Я пытаюсь найти ошибку с утра, но пока безуспешно. Когда я пытаюсь запустить код, он не выдает никакой ошибки или чего-либо еще. Отладчик перешел на мой класс БД и останавливается. Ниже код моего контроллера.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using System.Data;
using System.Data.SqlClient;
namespace iLearnWebApi.Controllers
{
public class ValuesController : ApiController
{
DAL.DBAccess dblayer = new DAL.DBAccess();
public DataSet Getrecord(int programid)
{
DataSet ds = dblayer.GetRecordbyid(programid);
return ds;
}
} }
И ниже мой код DBClass.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
using System.Security.Cryptography;
using System.Configuration;
using System.Data.Odbc;
using Oracle.ManagedDataAccess.Client;
namespace iLearnWebApi.DAL
{
public class DBAccess
{
OracleParameter[] _objOraParam;
OracleConnection con = new OracleConnection();
//--- Get Records By Program ID
public DataSet GetRecordbyid(int progid)
{
DataSet ds = new DataSet();
try
{
_objOraParam = new OracleParameter[2];
_objOraParam[0] = new OracleParameter("p_Program_ID", OracleDbType.Int32);
_objOraParam[0].Direction = ParameterDirection.Input;
_objOraParam[0].Value = progid;
_objOraParam[1] = new OracleParameter("RCT_OUT", OracleDbType.RefCursor);
_objOraParam[1].Direction = ParameterDirection.Output;
ds = ExecuteDataset(con, CommandType.StoredProcedure, "ILS_USP_PROGRAM_DATA", _objOraParam);
}
catch (Exception ex)
{
LogError("GetRecordbyid", ex.Message.ToString());
throw ex;
}
finally
{
con.Close();
}
return ds;
}
// Execute Data
private DataSet ExecuteDataset(OracleConnection con, CommandType procname, string commandText, params OracleParameter[] objOraParam)
{
//create a command and prepare it for execution
OracleCommand cmd = new OracleCommand();
PrepareCommand(cmd, con, (OracleTransaction)null, procname, commandText, objOraParam);
//create the DataAdapter & DataSet
OracleDataAdapter da = new OracleDataAdapter(cmd);
DataSet ds = new DataSet();
//fill the DataSet using default values for DataTable names, etc.
da.Fill(ds);
cmd.Dispose();
//return the dataset
return ds;
}
//---- Used To Prepare Oracle command
private void PrepareCommand(OracleCommand command, OracleConnection connection, OracleTransaction transaction, CommandType commandType, string commandText, OracleParameter[] commandParameters)
{
//if the provided connection is not open, we will open it
string con_string = ConfigurationManager.ConnectionStrings["OracleConnectionString"].ConnectionString;
if (connection.State != ConnectionState.Open)
{
connection.ConnectionString = DecryptString(con_string, "CFSENC");
connection.Open();
}
//associate the connection with the command
command.Connection = connection;
//set the command text (stored procedure name or Oracle statement)
command.CommandText = commandText;
//if we were provided a transaction, assign it.
if (transaction != null)
{
command.Transaction = transaction;
}
//set the command type
command.CommandType = commandType;
//attach the command parameters if they are provided
if (commandParameters != null)
{
AttachParameters(command, commandParameters);
}
return;
}
// Used For Attaching Parameter To Command
private void AttachParameters(OracleCommand command, OracleParameter[] commandParameters)
{
foreach (OracleParameter p in commandParameters)
{
//check for derived output value with no value assigned
if ((p.Direction == ParameterDirection.InputOutput) && (p.Value == null))
{
p.Value = DBNull.Value;
}
command.Parameters.Add(p);
}
}
// Used For Decryption Of Encrypted String
private string DecryptString(string con_string, string key)
{
byte[] plainBytes = null;
try
{
string passWord = key;
string strInput = con_string;
byte[] encryptBytes = Convert.FromBase64String(strInput);
MemoryStream ms = new MemoryStream(strInput.Length);
//Using triple des for decryption
TripleDESCryptoServiceProvider tDesCsp = new TripleDESCryptoServiceProvider();
// Creating decryption IV and Key using the key supplied by the user
tDesCsp.IV = new byte[8];
PasswordDeriveBytes pdb = new PasswordDeriveBytes(passWord, new byte[0]);
tDesCsp.Key = pdb.CryptDeriveKey("RC2", "MD5", 128, new byte[8]);
CryptoStream deEnStream = new CryptoStream(ms, tDesCsp.CreateDecryptor(), CryptoStreamMode.Write);
//write the decrypted data to the stream
deEnStream.Write(encryptBytes, 0, encryptBytes.Length);
deEnStream.FlushFinalBlock();
plainBytes = new byte[ms.Length];
ms.Position = 0;
//reading the decrypted stream and write it into the byte array
ms.Read(plainBytes, 0, (int)ms.Length);
deEnStream.Close();
}
catch (Exception err)
{
string sErr = err.ToString();
throw new Exception("Error decrypting string.");
}
return Encoding.UTF8.GetString(plainBytes);
}
// For Writing Log Files
private void LogError(string header, string error)
{
string strPath;
string strActualError;
StreamWriter objErrWriter;
DateTime objDt = DateTime.Now;
string strDate;
strDate = objDt.ToString("ddMMyyyy");
try
{
// Get Actual Path of "Error" stored in Web.config
strPath = ConfigurationManager.AppSettings["sPathErrorLog"];
//Generates Path & LogFile Name of ErrorLog
strPath = strPath + strDate + ".log";
// Generates Error Message
strActualError = DateTime.Now + " : " + header + " : " + error;
// Creation of File.
objErrWriter = new StreamWriter(strPath, true, System.Text.Encoding.ASCII);
objErrWriter.WriteLine("");
objErrWriter.WriteLine(strActualError);
objErrWriter.Close();
}
catch (Exception ex)
{
throw ex;
}
}
}}
Может кто-нибудь сказать мне, какую ошибку я совершил в приведенном выше коде.