Hi,
I've done following test on my side and it's working correctly on my side:
1) Create a default web site using File System mode
2) Create a class with following content (placed to App_Code location as
prompted):
using System;
using System.Collecti ons.Generic;
using System.Componen tModel;
namespace myns
{
public class Product
{
private int m_id;
public int Id
{
get { return m_id; }
set { m_id = value; }
}
private string m_name;
public string Name
{
get { return m_name; }
set { m_name = value; }
}
private double m_price;
public double Price
{
get { return m_price; }
set { m_price = value; }
}
private bool m_archived;
public bool Archived
{
get { return m_archived; }
set { m_archived = value; }
}
public Product()
{
}
public Product(int id, string name, double price, bool archived)
{
m_id = id;
m_name = name;
m_price = price;
m_archived = archived;
}
}
[DataObject(true )]
public class ProductDAO
{
private static List<Products_p roducts;
public static List<ProductGet AllProducts()
{
if (s_products == null)
{
s_products = new List<Product>() ;
s_products.Add( new Product(1, "first product", 11.11,
false));
s_products.Add( new Product(2, "second product", 22.22,
true));
s_products.Add( new Product(3, "third product", 33.33,
true));
s_products.Add( new Product(4, "fourth product", 44.44,
false));
}
return s_products;
}
public static Product GetProductById( int id)
{
foreach (Product p in s_products)
{
if (p.Id == id) return p;
}
return null;
}
public static void UpdateProduct(P roduct product)
{
if (s_products == null) throw new
ApplicationExce ption("Products is null");
for (int i = 0; i < s_products.Coun t; i++)
{
if (s_products[i].Id == product.Id)
{
s_products.Inse rt(i, product);
s_products.Remo veAt(i + 1);
return;
}
}
throw new ApplicationExce ption("Invalid product to update");
}
public static void DeleteProduct(P roduct product)
{
if (s_products == null) throw new
ApplicationExce ption("Products is null");
for (int i = 0; i < s_products.Coun t; i++)
{
if (s_products[i].Id == product.Id)
{
s_products.Remo veAt(i);
return;
}
}
}
}
}
3) Compile the web site and add a GridView to Default.aspx, configure to
use the ObjectDataSourc e, the GridView shows 4 columns: Archived, Price,
Id, Name
4) Now add following property in the Product class
private string m_memo;
public string Memo
{
get { return m_memo; }
set { m_memo = value; }
}
5) Compile the web site again, open Default.aspx designer, select the
GridView (make sure no column is selected) and open it's smart tags menu:
select "Refresh Schema", the IDE will prompt:
=====
Refresh Fields and Keys for 'GridView1'
Would you like to regenerate the GridView column fields and data keys using
the selected data source schema? Warning: this will delete all existing
column fields.
=====
Select Yes and the GridView will have the new column "Memo".
Would you please test above steps on your side and let me know the result?
Thanks.
Sincerely,
Walter Wang (wa****@online. microsoft.com, remove 'online.')
Microsoft Online Community Support
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