Gridview and ObjectDataSource with Custom object : update problem

  • Thread starter Thread starter Olivier Matrot
  • Start date Start date
O

Olivier Matrot

Hello,
I'm using a gridview with objectdatasource and custom objects collections
SELECT/INSERT/UPDATE/DELETE methods are using custom objects as parameters.
This is working fine. But I have a problem with the object that is passed
back to the update method. It contains some of the properties of the
original object sent during the SELECT method, but is missing others ! How
can I ensure that all original object properties not modified are also set
in the object given to the update mehod ?
TIA.
 
Hi Olivier,

Using a simple business object and DAL class doesn't reproduce the issue
you're experiencing:

namespace mynamespace
{
public class Product
{
private int _id;

public int Id
{
get { return _id; }
set { _id = value; }
}
private string _code;

public string Code
{
get { return _code; }
set { _code = value; }
}
private string _name;

public string Name
{
get { return _name; }
set { _name = value; }
}

public Product()
{
}

public Product(int p_id, string p_code, string p_name)
{
_id = p_id;
_code = p_code;
_name = p_name;
}
}

public class Products
{
public List<Product> GetAllProducts()
{
List<Product> list = new List<Product>();
for (int i = 0; i < 10; i++) {
list.Add(new Product(i, "code" + i.ToString(), "name" +
i.ToString()));
}
return list;
}

public void Update(Product p)
{
}
}
}

<asp:GridView ID="GridView1" runat="server" DataKeyNames="Id"
AutoGenerateColumns="False" DataSourceID="ObjectDataSource1" >
<Columns>
<asp:CommandField ShowEditButton="True" />
<asp:BoundField DataField="Id" HeaderText="Id"
SortExpression="Id" ReadOnly="True" />
<asp:BoundField DataField="Code" HeaderText="Code"
SortExpression="Code" />
<asp:BoundField DataField="Name" HeaderText="Name"
SortExpression="Name" />
</Columns>
</asp:GridView>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
DataObjectTypeName="mynamespace.Product"
SelectMethod="GetAllProducts" TypeName="mynamespace.Products"
UpdateMethod="Update">
</asp:ObjectDataSource>

Your project is certainly more complicated than this. Would you please
create a reproducible project and post it here or send it to me directly?
Thank you.


Sincerely,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

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