GridView Update, With SqlDataSource UpdateCommand Set From Code-behind. (C#)

Hi all

I have a GridView on an aspx page, that is enabled for editing, deletion and sorting.

In the Page_Load event of the aspx page, i add a SqlDataSource to the page, and bind the source to the GridView.

When i click the update, or delete button, it makes a PostBack, but nothing is affected. I'm sure this has got something to do with the parameters.

First, i tried having the GridView.AutoGenerateColumns set to True. I have also tried adding the columns manually, but no affect here either.

The code for setting the commands, and adding the SqlDataSource to the page are as follows:

            string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            string strProvider = ConfigurationManager.ConnectionStrings["ConnectionString"].ProviderName;
            string selectCommand = "SELECT * FROM rammekategori";
           
            SqlDataSource ds = new SqlDataSource(strProvider, strConn, selectCommand);
            ds.ID = "RammeKategoriDS";
            ds.UpdateCommand = "UPDATE rammekategori SET Kategoribeskrivelse = @Kategoribeskrivelse WHERE (Kategorinavn = @Kategorinavn)";
            ds.DeleteCommand = "DELETE FROM rammekategori WHERE (Kategorinavn = @Kategorinavn)";
           
            Parameter Kategorinavn = new Parameter("Kategorinavn", TypeCode.String);
            Parameter Kategoribeskrivelse = new Parameter("Kategoribeskrivelse", TypeCode.String);
            ds.UpdateParameters.Add(Kategorinavn);
            ds.UpdateParameters.Add(Kategoribeskrivelse);
            ds.DeleteParameters.Add(Kategorinavn);

            Page.Controls.Add(ds);

            SqlDataSource m_SqlDataSource = Page.FindControl("RammeKategoriDS") as SqlDataSource;

            if (m_SqlDataSource != null)
            {
                this.gvRammeKategorier.DataSourceID = m_SqlDataSource.ID;
            }

As mentioned - no affect at all!

Thanks in advance - MartinHN