我遇到此错误:类型' System.InvalidOperationException'发生在Microsoft.Practices.EnterpriseLibrary.Data.dll但未在用户代码中处理。附加信息:参数数量与存储过程的值数量不匹配。这是我的代码:
public static IEnumerable<abcProduct> GetAll()
{
string cnn =
"database connectionstring";
using (OracleConnection conn = new OracleConnection(cnn))
{
conn.Open();
OracleCommand cmd = new OracleCommand();
cmd.Connection = conn;
cmd.CommandText = "package_name.sp_name";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("resultset_out", OracleDbType.RefCursor, ParameterDirection.Output);
OracleDataReader rdr = cmd.ExecuteReader();
//rdr.Read();
while (rdr.Read())
{
yield return new vProduct(GetNullableValue<string>(rdr["ABC_PRODUCT"]), GetNullableValue<string>(rdr["ABC_PRODUCT_AREA"]));
}
}
}
这是我的商店程序结构
PROCEDURE PRC_ABC_PRODUCTS_GETALL(resultset_out OUTPUT TYPES.cursorType) AS
BEGIN
OPEN resultset_out
FOR
SELECT UPPER(products.abc_product) abc_product,
MAX(productareas.abc_product_area) abc_product_area
FROM SCHEMA.AS_ABC_PRODUCT products
LEFT JOIN SCHEMA.AS_ABC_PRODUCT_AREA productareas
ON products.V_PRODUCT_AREA_ID = productareas.ABC_PRODUCT_AREA_ID
WHERE products.VALID = 1
AND products.abc_product NOT LIKE '$%'
GROUP BY UPPER(products.abc_product),
UPPER(productareas.abc_product_area)
ORDER BY UPPER(products.ABC_PRODUCT);
END
PRC_ABC_PRODUCTS_GETALL;
有人可以帮忙吗?任何人都能指出错误是什么吗?我们将非常感激一点帮助: - )
答案 0 :(得分:0)
我在您的代码中看到了几个问题。
应该是cmd.CommandText = "PRC_ABC_PRODUCTS_GETALL";
而不是cmd.CommandText = "package_name.sp_name";
resultset_out OUTPUT TYPES.cursorType
无效的Oracle语法。应该是resultset_out OUT SYS_REFCURSOR
。你能编译这个程序吗?
试试这样:
cmd.CommandText = "begin res := PRC_ABC_PRODUCTS_GETALL; end;";
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add("res", OracleDbType.RefCursor, ParameterDirection.ReturnValue);
OracleDataReader rdr = cmd.ExecuteReader();
和这个PL / SQL:
FUNCTION PRC_ABC_PRODUCTS_GETALL RETURN SYS_REFCURSOR AS
resultset_out SYS_REFCURSOR;
BEGIN
OPEN resultset_out
FOR
SELECT UPPER(products.abc_product) abc_product,
MAX(productareas.abc_product_area) abc_product_area
FROM SCHEMA.AS_ABC_PRODUCT products
LEFT JOIN SCHEMA.AS_ABC_PRODUCT_AREA productareas
ON products.V_PRODUCT_AREA_ID = productareas.ABC_PRODUCT_AREA_ID
WHERE products.VALID = 1
AND products.abc_product NOT LIKE '$%'
GROUP BY UPPER(products.abc_product),
UPPER(productareas.abc_product_area)
ORDER BY UPPER(products.ABC_PRODUCT);
RETURN resultset_out;
END;