如何調用存儲過程與參數從c＃代碼

Question

我已經創建瞭如下所示的存儲過程，我將如何從後面的c＃代碼調用此函數來獲取結果並將結果存儲在數據集中。

USE [Test] 
GO 
/****** Object: StoredProcedure [dbo].[tesproc] Script Date: 09/01/2010 13:00:54 ******/ 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 
ALTER PROCEDURE [dbo].[tesproc] 
    -- Add the parameters for the stored procedure here 
    @a float, @b float, @c float,@d int 
AS 
BEGIN 
    -- SET NOCOUNT ON added to prevent extra result sets from 
    -- interfering with SELECT statements. 
    SET NOCOUNT ON; 

    -- Insert statements for procedure here 
    select Id, Name1,ZipCode,StreetName,StreetNumber,State1,Lat,Lng, (6371 * ACOS(COS((@a/@b)) * COS( (Lat/@b) ) * COS((Lng/@b) - (@c/@b)) + SIN(@a/@b) * SIN( Lat/@b ))) as distance from business_details where (6371 * ACOS(COS((@a/@b)) * COS( (Lat/@b) ) * COS((Lng/@b) - (@c/@b)) + SIN(@a/@b) * SIN( Lat/@b )))<@d 
END 

如果我在SQL Server中執行此存儲過程的做工精細與此以下調用

exec dbo.tesproc 12.9216667 ,57.2958,77.591667,1 

Answer 1

using (SqlConnection conn = new SqlConnection("connection string goes here")) 
using (SqlCommand comm = new SqlCommand("tesproc", conn)) 
{ 
    comm.CommandType = CommandType.StoredProcedure; 
    comm.Parameters.AddWithValue("@a", 0.1); 
    // etc 

    conn.Open(); 

    using (SqlDataReader reader = comm.ExecuteReader()) 
    { 
     while (reader.Read()) 
     { 
      int id = reader.GetInt32(reader.GetOrdinal("id")); 
      // etc 
     } 
    } 
} 

有很多在互聯網上的綜合樣本：

http://www.csharp-station.com/Tutorials/AdoDotNet/Lesson04.aspx

我的代碼示例只是表明它可能是什麼樣子 - 這是寫直在編輯器中，可能無法正常工作的它自己的。

Answer 2

查找到SqlConnection和SqlCommand。