ObjectDataSource Insert throws an Error (using Business Objects)

Question

Hello,

Quick overview

• Trying to insert a Business Object using ObjectDataSource (on a GridView)
• Get the following Error

ObjectDataSource 'ObjectDataSource1' has no values to insert. Check that the 'values' dictionary contains values.

Project SetUp

• Person - simple dummy Business Object (Name and Age)
• PersonBinder - Holds the methods for the Object DataSource (Select and Insert in this case)
• InsertGrid - simple Grid (inherits GridView) add an "Add" button on the Footer, which inturn calls the DataSource's Insert
• Default - ASPX page, holds the Grid and Datasource, (applies Insert params to the DataSorce)

Note I added TODO comments around, what i think are key areas

The Code

Person Binder Missing out the person (its get 2 properties) here is the binder

/// <summary>
/// A binding Class.
/// </summary>
public class PersonBinder
{

    public IEnumerable<Person> Select()
    {
        List<Person> people = new List<Person>();

        for (int i = 0; i < 9; i++)
        {
            Person person = new Person();
            person.Name = "Name " + i.ToString();
            person.Age = i;
            people.Add(person);
        }

        return people;
    }


    public void Insert(Person p)
    {
        //TODO: the Insert Method
        //errors before this.
    }
}

InsertGrid

public class InsertGrid : GridView
{
    protected override void OnInit(System.EventArgs e)
    {
        base.OnInit(e);
        ShowFooter = true;
        DataBind();
    }


    /// <summary>
    /// here to handle button clicks.
    /// </summary>
    private void ModeCommand(object sender, CommandEventArgs e)
    {
        switch (e.CommandName)
        {
            case "Add":

                //ObjectDataSource objectDataSource = DataSource as ObjectDataSource;
                ObjectDataSource objectDataSource = Parent.FindControl(DataSourceID) as ObjectDataSource;

                if (objectDataSource != null)
                {
                    //TODO: Errors HERE!
                    objectDataSource.Insert();
                }
                break;

        }


    }

    /// <summary>
    /// Raises the <see cref="E:System.Web.UI.WebControls.GridView.RowDataBound"/> event.
    /// </summary>
    /// <param name="e">A <see cref="T:System.Web.UI.WebControls.GridViewRowEventArgs"/> that contains event data.</param>
    protected override void OnRowDataBound(GridViewRowEventArgs e)
    {
        base.OnDataBound(e);
        //add an insert button
        if (e.Row.RowType == DataControlRowType.Footer)
        {

            ImageButton ibtnAdd = new ImageButton();
            ibtnAdd.ID = "Add";
            ibtnAdd.CommandName = "Add";
            ibtnAdd.ToolTip = "Add new Item";
            ibtnAdd.ImageAlign = ImageAlign.AbsMiddle;
            ibtnAdd.Style.Add("cursor", "pointer");
            ibtnAdd.CausesValidation = true;
            ibtnAdd.Command += ModeCommand;
            ibtnAdd.Enabled = true;
            e.Row.Cells[0].Controls.Add(ibtnAdd);

        }
    }
}

Default HTML

<form id="form1" runat="server">
<div>

    <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" 
        DataObjectTypeName="GridViewSample.Person" InsertMethod="Insert" 
        SelectMethod="Select" TypeName="GridViewSample.PersonBinder">
    </asp:ObjectDataSource>
</div>
<br />
<cc1:InsertGrid ID="InsertGrid1" runat="server" AutoGenerateColumns="False" 
    DataSourceID="ObjectDataSource1">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
        <asp:BoundField DataField="Age" HeaderText="Age" SortExpression="Age" />
    </Columns>
</cc1:InsertGrid>
</form>

Default CodeBehind

public partial class _Default : System.Web.UI.Page
{
    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        //TODO: here is the insert PARAMs. what am i missing.
        ObjectDataSource1.InsertParameters.Add("Name", "");
        ObjectDataSource1.InsertParameters.Add("Age", "0");
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        //TODO: Tried this too
        IDataSource ds = ObjectDataSource1;
        DataSourceView view = ds.GetView(InsertGrid1.DataMember);
        Dictionary<string, string> values = new Dictionary<string, string>();
        values.Add("Name", "");
        //values.Add("Age", "0");

        view.Insert(values, delegate { return false; });
    }
}

Many thanks

Bones

Answer 1

The following does actually work.

IDataSource ds = ObjectDataSource1;
DataSourceView view = ds.GetView(InsertGrid1.DataMember);        
Dictionary<string, string> values = new Dictionary<string, string>();        
values.Add("Name", "");        
//values.Add("Age", "0");        
view.Insert(values, delegate { return false; });

what I needed to do was to remove/replace the

//TODO: Errors HERE!                   
objectDataSource.Insert();