[Solved] Grid double posting on insert

[Morgan]

I have a simple grid with two colums, Name and Value.  The items are stored in a simple object with two properties as follows: 

 

[Serializable]
public class NameValuePairModel
{
    private string name;
    private string value;

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

    public string Value
    {
        get {return value;}
        set {this.value = value;}
    }
}

The objects are stored in a Dictionary<string, NameValuePairModel> object, which is persisted to session state.

When I insert the first item it works fine.  Inserting the second item results in an exception from trying to insert a duplicate record into the dictionary.  Tracing through the code, I find that the InsertParameter method is being called once for each row in the grid instead of just for the row that's being added. 

The controller code is as follows:

[GridAction]
public ActionResult InsertParameter()
{
    Dictionary<string, NameValuePairModel> parameters = GetParametersFromSession();

    NameValuePairModel model = new NameValuePairModel();

    if (TryUpdateModel(model))
    {
        parameters.Add(model.Name, model);
        Session["testParameters"] = parameters;
    }

    return View(new GridModel<NameValuePairModel>
                {
                    Data = GetParameterGridData(parameters)
                });
}

And the grid code in the view is as follows:

<div class="sizedContainer" style="height: 240px; background-color: #696969">
    @(Html.Telerik().Grid<NameValuePairModel>()
            .Name("Rulesets")
            .DataKeys(keys => keys.Add(p => p.Name))
            .ToolBar(commands => commands.Insert().ButtonType(GridButtonType.Text))
            .Columns(columns =>
                     {
                        columns.Bound(o => o.Name).Title("Name").Filterable(false).Sortable(true);
                        columns.Bound(o => o.Value).Title("Value").Filterable(false).Sortable(true);
                        columns.Command(commands =>
                                        {
                                            commands.Edit().ButtonType(GridButtonType.Image);
                                            commands.Delete().ButtonType(GridButtonType.Image);
                                                     });
                            })
            .DataBinding(
                    dataBinding => dataBinding.Ajax().OperationMode(GridOperationMode.Server)
                                    .Select("GetParameters", "TestHarness")
                                    .Insert("InsertParameter", "TestHarness")
                                    .Delete("DeleteParameter", "TestHarness")
                                    .Update("UpdateParameter", "TestHarness"))
            .Sortable()
            .Editable(editing => editing.Mode(GridEditMode.InLine))
            .Pageable(
                    paging => paging.PageSize(5)
                                .Style(GridPagerStyles.NextPreviousAndNumeric | GridPagerStyles.PageSizeDropDown)
                                .Position(GridPagerPosition.Both)
            ))

I can't figure out why it's doing this.  The demo doesn't seem to do this, but for some reason every time I try to use the data bound editing with the grid my code does it.

Any assistance would be appreciated.

I can code around it by checking to see if the collection already contains the key, but that's a bit kludgy and I'd prefer not to.

Thanks!

Morgan

[Morgan]

Bump to top of posts.

[Daniel]

Hello Morgan,

This is unknown issue and I couldn't reproduce it based on the code you have provided. Could you send a sample project which replicates this behavior so I can check the exact setup?

Kind regards,
Daniel
the Telerik team