使用存储过程连接到 SQL Server 后，我在“ExecuteNonQuery”上收到错误，为什么？

Question

我打开我的SqlConnection，然后使用 foreach 循环和我的存储过程来收集数据。我使用Parameters.AddWithValue 将数据发送到我的存储过程中，但我一直收到错误

System.Data.SqlClient.SqlException: '过程或函数 spInsertLeafPickup 指定的参数过多。

有什么理由吗？

存储过程：

CREATE TYPE Templeafpickup AS TABLE 
   (
       ID INT PRIMARY KEY,
       Address NVARCHAR(50),
       SeasonType NVARCHAR(50),
       NextPickupdate NVARCHAR(10)
   )

CREATE PROCEDURE spInsertLeafPickup
     @Templeafpickup Templeafpickup READONLY
AS
BEGIN
    INSERT INTO LeafPickup([ID], [Address], [SeasonType], [NextPickupdate])
        SELECT
            [ID], [Address], [SeasonType], [NextPickupdate]  
        FROM
            @Templeafpickup
END

C#类：

string cs = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;

using (SqlConnection con1 = new SqlConnection(cs))
{
    con1.Open();

    foreach (DataRow dr1 in dt.Rows)
    {
        SqlCommand cmd = new SqlCommand("spInsertLeafPickup", con1);
        cmd.CommandType = CommandType.StoredProcedure;

        //Insert stored procedure
        cmd.Parameters.AddWithValue("@Address", dr1["PCOMBINED"]);
        cmd.Parameters.AddWithValue("@SeasonType", dr1["PSSSTREET"]);
        cmd.Parameters.AddWithValue("@NextPickupdate", dr1["ZST"]);

        cmd.ExecuteNonQuery(); <= Error System.Data.SqlClient.SqlException: 'Procedure or function spInsertLeafPickup has too many arguments specified.'
    }

    con1.Close();
}

Answer 1

您正在通过 c# 代码发送 3 个参数，但您仅在存储过程中声明了 1 个参数。请检查一下存储过程是如何定义的。 https://www.mssqltips.com/sqlservertutorial/160/sql-server-stored-procedure-tutorial/

   create proc spInsertLeafPickup
   @Address varchar, 
@SeasonType int,
@NextPickupdate date
   As 
   Begin 
   insert into LeafPickup([ID],[Address],[SeasonType],[NextPickupdate])
   Values(NEWID(),@Address,@SeasonType,@NextPickupdate]
   End

Answer 2

如果 LeafPickup 的表定义具有作为 INT 和 IDENTITY 的 ID，类似于：

Create Table dbo.LeafPickup 
   (
   ID int IDENTITY(1,1) NOT NULL primary key,
   Address nvarchar(50),
   SeasonType nvarchar(50),
   NextPickupdate nvarchar(10)
   )

那么您的存储过程将不会插入 ID - 它会为您自动生成。所以存储过程是：

create proc dbo.spInsertLeafPickup
   @Address nvarchar(50), 
   @SeasonType nvarchar(50),
   @NextPickupdate nvarchar(10)
   As 
   Begin 
      insert into LeafPickup(Address, SeasonType, NextPickupdate)
      Values(@Address, @SeasonType, @NextPickupdate]
   End