C# 请告诉我我在哪里，如何更正它：

我使用了三层架构 System.IndexOutOfRangeException： 在此处输入代码位置1没有行。我把代码贴在这里

数据层 数据访问层

 public DataSet getRecordDisplay(int product_id,int category_id)
            {
                string constring = string.Empty;
    
                SqlConnection conn;
    
    
                constring = ConfigurationManager.ConnectionStrings["MyConnection"].ConnectionString;
                conn = new SqlConnection(constring);
                conn.Open();
                SqlCommand cmd = new SqlCommand("sp_Productselect", conn);
                cmd.CommandText = "sp_Productselect";
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.Parameters.AddWithValue("@product_id", DbType.Int32).Value = product_id;
                cmd.Parameters.AddWithValue("@category_id", DbType.Int32).Value = category_id;
                SqlDataAdapter adpt = new SqlDataAdapter(cmd);
                DataSet dst = new DataSet();
                adpt.Fill(dst);
                return dst;
    
            }

#Business logic
    

业务逻辑层包含在这里

 public DataSet getRecordDisplay(int product_id,int category_id)
        {
            DataSet ds = new DataSet();
            ds = dal.getRecordDisplay(product_id,category_id);
            return ds;
        }

# code behind
 

     int product_id = Convert.ToInt32(txtPId.Text);
                int category_id = Convert.ToInt32(txtctid.Text);
                DataSet dsOrderDetail = new DataSet();
               
    
                        dsOrderDetail = bal.getRecordDisplay(product_id, category_id);
                    lblProdName.Text = dsOrderDetail.Tables[0].Rows[0]["Product_Name"].ToString() + "<br/>";
                    lblProdId.Text = dsOrderDetail.Tables[0].Rows[1]["Product_Id"].ToString() + "<br/>";
                    lblProdDesc.Text = dsOrderDetail.Tables[0].Rows[2]["Description"].ToString() + "<br/>";
                    lblCtyId.Text = dsOrderDetail.Tables[0].Rows[3]["Category_id"].ToString() + "<br/>";
                    lblPrice.Text = dsOrderDetail.Tables[0].Rows[4]["Price"].ToString() + "<br/>";
                    lblAblty.Text = dsOrderDetail.Tables[0].Rows[5]["Availability"].ToString() + "<br/>";

#my stored procedure


stored procedure is added here
        GO
            CREATE PROCEDURE [dbo].[sp_Productselect] 
            @product_id as int,
            @category_id as  int
        AS
        BEGIN
         
            SELECT * FROM product04 where   product_id=345 and category_id=2346
        END
        
        GO

---

您还需要检查查询是否返回数据，因为您正试图访问不存在的datarow数据，所以您将面临这个问题。我希望你明白我的意思

 dsOrderDetail = bal.getRecordDisplay(product_id, category_id);

if(dsOrderDetail !=null && dsOrderDetail.Table.Count > 0 && dsOrderDetail.Table.Rows.Count >0)
{
     lblProdName.Text = dsOrderDetail.Tables[0].Rows[0]["Product_Name"].ToString() + "<br/>";
     lblProdId.Text = dsOrderDetail.Tables[0].Rows[1]["Product_Id"].ToString() + "<br/>";
     lblProdDesc.Text = dsOrderDetail.Tables[0].Rows[2]["Description"].ToString() + "<br/>";
     lblCtyId.Text = dsOrderDetail.Tables[0].Rows[3]["Category_id"].ToString() + "<br/>";
     lblPrice.Text = dsOrderDetail.Tables[0].Rows[4]["Price"].ToString() + "<br/>";
     lblAblty.Text = dsOrderDetail.Tables[0].Rows[5]["Availability"].ToString() + "<br/>";
}

这行查询应该是

  CREATE PROCEDURE [dbo].[sp_Productselect] 
        @product_id as int,
        @category_id as  int
    AS
    BEGIN

        SELECT * FROM product04 where   product_id=@product_id and category_id=@category_id 
    END

    GO

代码中还有其他东西，您应该使用for connection来处理它

 public DataSet getRecordDisplay(int product_id,int category_id)
{
 ...
  using( SqlConnection con = new SqlConnection(connectionstring))
  {
  }
 ...
}

---

例外情况很明显。您正在尝试从不存在的位置读取数据。最有可能是因为您尝试从6行而不是仅从一行读取数据。如果您的数组包含三项，如字符串[3]，并且您尝试访问第4个位置，则会出现索引超出范围错误。你也在做同样的事情，你试图访问一个不存在的索引。我们不能告诉你从哪里提供的代码，你甚至没有告诉我们错误发生在哪一行…谢谢你注意到你应该高度考虑重新命名你的存储过程。调用以sp_uuu前缀命名的过程，无论当前目标数据库是什么，都会首先检查主数据库中的该过程，然后查看目标数据库。谢谢

 public DataSet getRecordDisplay(int product_id,int category_id)
{
 ...
  using( SqlConnection con = new SqlConnection(connectionstring))
  {
  }
 ...
}