Linq如何执行存储过程

using System;
using System.Data;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;

namespace XXXX.Data.Helper
{
public static class DatabaseExtension
{
/// <summary>
/// 执行存储过程
/// </summary>
/// <typeparam name="TElement"></typeparam>
/// <param name="sp"></param>
/// <param name="parameters">new SqlParameter() </param>
/// <returns></returns>
public static int ProcedureQuery(string sp, params SqlParameter[] parameters)
{
using (var context = new XXXXDbContext())
{
using (context.Database.Connection)
{
context.Database.Connection.Open();
var cmd = context.Database.Connection.CreateCommand();
cmd.CommandText = sp;
cmd.CommandType = CommandType.StoredProcedure;
foreach (var param in parameters)
{
cmd.Parameters.Add(param);
}
return cmd.ExecuteNonQuery();
}
}
}
/// <summary>
/// 根据存储过程查询所需要的数据
/// </summary>
/// <typeparam name="TElement"></typeparam>
/// <param name="sp"></param>
/// <param name="parameters"></param>
/// <returns></returns>
public static IEnumerable<TElement> ProcedureQuery<TElement>(string sp, params object[] parameters)
{
string sql = "";
List<TElement> items = new List<TElement>();
using (var context = new XXXXDbContext())
{
for (int i = 0; i < parameters.Length; i++)
{
sql += "" + FormatSqlString(parameters[i]) + ",";
}
sql = "EXEC " + sp + " " + sql.TrimEnd(',');
var tempResult = context.Database.SqlQuery<TElement>(sql, parameters);
if (tempResult != null && tempResult.Count() > 0)
{
items.AddRange(tempResult);
}
}
return items;
}
public static IEnumerable<TElement> ProcedureQuery<TElement>(string sp)
{
string sql = "";
List<TElement> items = new List<TElement>();
using (var context = new XXXXDbContext())
{

sql = "EXEC " + sp + " ";
var tempResult = context.Database.SqlQuery<TElement>(sql);
if (tempResult != null && tempResult.Count() > 0)
{
items.AddRange(tempResult);
}
}
return items;
}
private static string FormatSqlString(object obj)
{
if (obj.GetType() == typeof(System.Boolean))
{
return ((bool)obj ? "1" : "0");
}
if (obj.GetType() == typeof(System.Guid))
{
return "'" + obj.ToString() + "'";
}
if (obj.GetType() == typeof(System.Int16) || obj.GetType() == typeof(System.Int32) || obj.GetType() == typeof(System.Int64) || obj.GetType() == typeof(System.Decimal) || obj.GetType() == typeof(System.Double))
{
return obj.ToString();
}
return "'" + obj.ToString() + "'";
}
}
}