过程或函数[sproc_name]需要参数'@materials',这是未提供的

Question

这让我疯了;)

我有这个存储过程...

ALTER PROCEDURE [dbo].[sproc_FindFoundries] 
    (@materials varchar(1000),
     @capabilities varchar(1000))
AS
BEGIN

 /* insert SQL code here */

END

该过程接受两个逗号分隔的字符串.在我的应用程序中,我有以下代码.

BCDataContext db = new BCDataContext();
SqlParameter prmMaterials = new SqlParameter("materials", SqlDbType.VarChar, 1000);
prmMaterials.Value = materialList;
SqlParameter prmCapability = new SqlParameter("capabilities", SqlDbType.VarChar, 1000);
prmCapability.Value = capabilityList;

SqlConnection cn = new SqlConnection(db.Connection.ConnectionString);
SqlCommand cmd = new SqlCommand("sproc_FindFoundries", cn);
cmd.Parameters.Add(prmMaterials);
cmd.Parameters.Add(prmCapability);

SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);

当我执行代码时,我收到错误

过程或函数[sproc_name]需要参数'@materials',这是未提供的.

当我尝试填充数据集时.在测试时,我已经验证两个参数都包含数据并且不为空.有没有我错过的东西？非常感谢第二双眼睛.

谢谢.

Answer 1

使用@materials,@capabilities作为参数的名称:

using (BCDataContext db = new BCDataContext())
using (SqlConnection connection =  new SqlConnection(db.Connection.ConnectionString))
using (SqlCommand command = connection.CreateCommand())
{
    command.CommandText = "sproc_FindFoundries";
    command.CommandType = CommandType.StoredProcedure;

    command.Parameters.Add("@materials", SqlDbType.VarChar, 1000).Value = materialList;
    command.Parameters.Add("@capabilities", SqlDbType.VarChar, 1000).Value =  capabilityList;

    DataSet ds = new DataSet();
    using (SqlDataAdapter da = new SqlDataAdapter(command))
    {
        da.Fill(ds);
    }
}