Question

我打开SqlConnection，然后使用foreach循环收集数据和存储过程。我使用Parameters.AddWithValue将数据发送到我的存储过程中，但始终出现错误

System.Data.SqlClient.SqlException：'过程或函数spInsertLeafPickup指定了太多参数。

为什么？

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，但是仅在存储过程中声明了1个参数。请检查一下如何定义存储过程。 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的表定义的ID为INT和IDENTITY，则类似于：

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

然后，您存储的proc将不会插入ID-它会自动为您生成。因此，存储的过程将是：

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

使用存储过程连接到SQL Server后，为什么出现“ ExecuteNonQuery”错误？

2 个答案: