Grid not binding a Checkbox to Boolean in Model

[Sean]

I've created the following editable grid bound to a model. The Date and Integer EditorTemplates work just fine.

However, our user case requires that we multi-select via a checkbox, which is why I added a Selected boolean in the Model. I'd rather cycle through these via the grid's data than by iterating through [tr]s, as it is a much cleaner way to do so.

Via a custom Checkbox EditorTemplate and the ClientTemplate I'm able to successfully display a checkbox. However, I have tried many ways to bind it to the actual Model property and have failed each time. I've tried @HTML.CheckboxFor and @HTML.Checkbox within my EditorTemplate, the latter working properly but not binding to the Model. The CheckboxFor throws a message about not being able to bind a null value... I've tried bool?, bool and System.Boolean, but all three would not bind properly.

View

@(Html.Kendo().Grid(Model.ExtensionDetails)

          .Name("ExtensionInfoGrid")

          .Columns(columns =>

                       {

                           columns.Bound(o => o.Selected)

                                .Title("")

                                .Width(50)

                                .ClientTemplate("<input type='checkbox' id='isSelected' name='isSelected' #if(Selected){#checked#}# value='#=Selected#' />")

                                .EditorTemplateName("Checkbox");

                           columns.Bound(o => o.ExtendFromDate)

                                .Title("Extend From Date *")

                                .Width(150)

                                .Format("{0:M/d/yyyy}")

                                .Filterable(false)

                                .Sortable(true)

                                .EditorTemplateName("Date");

                           columns.Bound(o => o.Units)

                                .Title("Units *")

                                .Width(100)

                                .EditorTemplateName("Integer");

                           columns.Bound(o => o.UnitType).Title("Unit Type");

                       })

          .Editable(editable => editable.Mode(GridEditMode.InCell))

          .DataSource(dataSource => dataSource

                                .Ajax()

                                .ServerOperation(false)

                                .Model(model =>

                                            {

                                                model.Id(m => m.Code);

                                                model.Field(m => m.Selected).Editable(true);

                                                model.Field(m => m.ExtendFromDate).Editable(true).DefaultValue(DateTime.Now);

                                                model.Field(m => m.Units).Editable(true);

                                                model.Field(m => m.UnitType).Editable(false);

                                            })

          )

)}

Model

using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using ProviderWebAppMVC.UmServiceRef;

 

namespace ProviderWebAppMVC.Models

{

    public class ExtensionDetail

    {

        public ExtensionDetail()

        {

            Selected = true;

            Code = string.Empty;

            Description = string.Empty;

            ExtendFromDate = DateTime.Now;

            ExtendToDate = DateTime.Now;

            Units = 0;

            UnitType = string.Empty;

        }

 

        public bool Selected;

        public string Code;

        public string Description;

        public DateTime ExtendFromDate;

        public DateTime ExtendToDate;

        public int Units { get; set; }

        public string UnitType { get; set; }

    }

}

[Sean]

When defining the Checkbox EditTemplate as:
@model bool
@(Html.CheckBoxFor(m => m)

I receive the following exception upon rendering:
The model item passed into the dictionary is null, but this dictionary requires a non-null model item of type 'System.Boolean'.

[Sean]

I was actually able to solve this issue with the following code solution: Kendo Grid Bound Checkboxes.

Digging around these forums can be a bear! It'd be nice if we'd have the option to search by forum, instead of searching all forums.

[Vladimir Iliev]

Hi Sean,

 
Thank for your feedback - we will consider implementing such functionality in the forum search. 

Kind Regards,
Vladimir Iliev
the Telerik team