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Getting Started with the PropertyGrid

This tutorial explains how to set up the Telerik UI for ASP.NET Core PropertyGrid and goes through the steps in the configuration of the component.

You will declare a view model and bind it to an instance of the PropertyGrid component. Next, you will configure the PropertyGrid items and their editors. Then, you will use the template options to enhance the items appearance and learn how to handle the JavaScript events of the component.

After completing this guide, you will achieve the following results:

Sample Telerik UI for ASP.NET Core PropertyGrid

Prerequisites

To successfully complete the tutorial, you need a project that is already configured to use the Telerik UI for ASP.NET Core components:

1. Prepare the CSHTML File

The first step is to add the required directives at the top of the .cshtml document:

  • To use the Telerik UI for ASP.NET Core HtmlHelpers:

    @using Kendo.Mvc.UI
    
  • To use the Telerik UI for ASP.NET Core TagHelpers:

    @addTagHelper *, Kendo.Mvc
    

Optionally, you can structure the document by adding the desired HTML elements like headings, divs, paragraphs, and others.

    @using Kendo.Mvc.UI

    <h4>Review element properties</h4>
    <div>

    </div>
    @addTagHelper *, Kendo.Mvc

    <h4>Review element properties</h4>
    <div>

    </div>

2. Declare the View Model

Binding a model to the PropertyGrid will set the PropertyGrid items internally to the Telerik Editor components that are suitable for the bound data. In addition, the DataAnnotation attributes of the model properties will be automatically applied to the PropertyGrid items.

    using System;
    using System.ComponentModel.DataAnnotations;

    public class PropertyViewMiodel
    {
        [Display(GroupName = "Styles", Description = "Select a different color that will be applied in the template.")]
        public string color { get; set; }

        [Display(GroupName = "Styles", Description = "Defines a name of an existing icon in the Kendo UI theme sprite.")]
        public string icon { get; set; }

        [Display(GroupName = "HTML")]
        public FontViewModel font { get; set; }
    }

    public class FontViewModel
    {
        [Required]
        [Display(GroupName = "font", Description = "Sets how thick or thin characters in text must be displayed.")]
        public int fontWeight { get; set; }

        [Required]
        [Display(GroupName = "font", Description = "Specifies the font family name for the element.")]
        public string fontFamily { get; set; }
    }
    public ActionResult Index()
    {
        return View(new PropertyViewMiodel() {
            color = "red",
            icon = "star",
            font = new FontViewModel()
            {
                fontWeight = 400,
                fontFamily = "Roboto"
            }
        });
    }

3. Initialize the PropertyGrid

Use the PropertyGrid HtmlHelper or TagHelper to configure the component.

  • The Name() configuration method is mandatory as its value is used for the id and the name attributes of the PropertyGrid element.
  • The Model option defines the model to which the PropertyGrid binds.
  • The EditMode() method enables the component editing.
  • The Columns() configuration specifies the widths of the field and value columns.
    @model PropertyViewMiodel

    @(Html.Kendo().PropertyGrid<PropertyViewMiodel>()
        .Name("propertyGrid")
        .Model(Model)
        .Columns(columns => columns.FieldColumn(fieldCol => fieldCol.Width(200)).ValueColumn(valueCol => valueCol.Width(250)))
        .EditMode(true)
    )
    @addTagHelper *, Kendo.Mvc
    @model PropertyViewMiodel  

    <kendo-propertygrid name="propertyGrid" model="@Model" edit-mode="true">
        <columns>
            <field-column width="200" />
            <value-column width="250" />
        </columns>
    </kendo-propertygrid>

4. Configure the Items Editors

The next step is to configure custom editors for the property values.

  • Use a DropDownList editor for the color and icon properties.

        @model PropertyViewMiodel
    
        @(Html.Kendo().PropertyGrid<PropertyViewMiodel>()
            .Name("propertyGrid")
            .Model(Model)
            .Columns(columns => columns.FieldColumn(fieldCol => fieldCol.Width(200)).ValueColumn(valueCol => valueCol.Width(250)))
            .EditMode(true)
            .Items(items =>
            {
                items.Add().Field(f => f.color)
                .Editor(editor => editor
                    .DropDownList()
                    .BindTo(new string[] { "red", "green", "blue", "purple", "orange" }));
    
                items.Add().Field(f => f.icon)
                .Editor(editor => editor
                    .DropDownList()
                    .DataTextField("Text")
                    .DataValueField("Value")
                    .BindTo(new List<SelectListItem>() {
                        new SelectListItem() {
                            Text = "gear", Value = "gear"
                        },
                        new SelectListItem() {
                            Text = "star", Value = "star"
                        },
                        new SelectListItem() {
                            Text = "folder", Value = "folder"
                        },
                        new SelectListItem() {
                            Text = "user", Value = "user"
                        },
                        new SelectListItem() {
                            Text = "info-circle", Value = "info-circle"
                        }
                    }));
            })
        )
    
        @addTagHelper *, Kendo.Mvc
        @model PropertyViewMiodel 
    
        @{
            var colors = new string[] { "red", "green", "blue", "purple", "orange" };
            var icons = new List<SelectListItem>() {
                new SelectListItem() {
                    Text = "gear", Value = "gear"
                },
                new SelectListItem() {
                    Text = "star", Value = "star"
                },
                new SelectListItem() {
                    Text = "folder", Value = "folder"
                },
                new SelectListItem() {
                    Text = "user", Value = "user"
                },
                new SelectListItem() {
                    Text = "info-circle", Value = "info-circle"
                }
            };
        } 
    
        <kendo-propertygrid name="propertyGrid" model="@Model" edit-mode="true">
            <columns>
                <field-column width="200" />
                <value-column width="250" />
            </columns>
            <property-grid-items>
                <property-grid-item field="color">
                    <dropdownlist-editor bind-to="colors"></dropdownlist-editor>
                </property-grid-item>
                <property-grid-item field="icon">
                    <dropdownlist-editor datatextfield="Text" datavaluefield="Value" bind-to="icons"></dropdownlist-editor>
                </property-grid-item>
            </property-grid-items>
        </kendo-propertygrid>
    
  • Use an AutoComplete editor for the fontFamily property.

        @model PropertyViewMiodel
    
        @(Html.Kendo().PropertyGrid<PropertyViewMiodel>()
            .Name("propertyGrid")
            .Model(Model)
            .Columns(columns => columns.FieldColumn(fieldCol => fieldCol.Width(200)).ValueColumn(valueCol => valueCol.Width(250)))
            .EditMode(true)
            .Items(items =>
            {
                ... //Additional configuration
                items.Add().Field("font")
                .Items(childItems =>
                {
                    childItems.Add().Field("fontFamily").Editor(editor => editor
                    .AutoComplete()
                    .BindTo(new string[] { "Arial", "Roboto", "Georgia", "Calibri", "Cursive", "Monospace", "Fantasy" }));
                });
            })
        )
    
        @addTagHelper *, Kendo.Mvc
        @model PropertyViewMiodel 
    
        @{
            var fonts = new string[] {"Arial", "Roboto", "Georgia", "Calibri", "Cursive", "Monospace", "Fantasy"};
        } 
    
        <kendo-propertygrid name="propertyGrid" model="@Model" edit-mode="true">
            <columns>
                <field-column width="200" />
                <value-column width="250" />
            </columns>
            <property-grid-items>
                <!-- Additional configuration -->
                <property-grid-item field="font" editable="false">
                    <property-grid-items>
                        <property-grid-item field="fontFamily">
                            <autocomplete-editor bind-to="fonts"></autocomplete-editor>
                        </property-grid-item>
                    </property-grid-items>
                </property-grid-item>
            </property-grid-items>
        </kendo-propertygrid>
    

5. Customize the Appearance of the PropertyGrid

To alter the appearance of the PropertyGrid values, use the template options of the items. By using the TemplateHandler() method, you can return the desired template through a JavaScript function. Another option is to pass the template as a string to the Template() method.

    @model PropertyViewMiodel

    @(Html.Kendo().PropertyGrid<PropertyViewMiodel>()
        .Name("propertyGrid")
        .Model(Model)
        .Columns(columns => columns.FieldColumn(fieldCol => fieldCol.Width(200)).ValueColumn(valueCol => valueCol.Width(250)))
        .EditMode(true)
        .Items(items =>
        {
            items.Add().Field(f => f.color)
            .Template("<span style='color:#=value#'>#=value#</span>")
            .Editor(...);

            items.Add().Field(f => f.icon)
            .TemplateHandler("iconTemplate")
            .Editor(...);

            items.Add().Field("font").TemplateHandler("fontTemplate")
            .Items(...);
        })
    )
    @addTagHelper *, Kendo.Mvc
    @model PropertyViewMiodel 

    <kendo-propertygrid name="propertyGrid" model="@Model" edit-mode="true">
        <columns>
            <field-column width="200" />
            <value-column width="250" />
        </columns>
         <property-grid-items>
            <property-grid-item field="color" template="<span style='color:#=value#'>#=value#</span>">
                ...
            </property-grid-item>
            <property-grid-item field="icon" template-handler="iconTemplate">
                ...
            </property-grid-item>
            <property-grid-item field="font" template-handler="fontTemplate" editable="false">
                ...
            </property-grid-item>
        </property-grid-items>
    </kendo-propertygrid>
    <script>
        function iconTemplate(data) {
            return `${kendo.ui.icon(data.value)}`;
        }

        function fontTemplate(data) {
            var propertyGridModel = $("#propertyGrid").data('kendoPropertyGrid').model();
            return `<span class="fontWeight">${propertyGridModel.font["fontWeight"]}</span> <span class="fontFamily">${propertyGridModel.font["fontFamily"]}</span>`;
        }
    </script>

In addition, you can control the width and height of the PropertyGrid by setting the respective Width() and Height() options.

    @model PropertyViewMiodel

    @(Html.Kendo().PropertyGrid<PropertyViewMiodel>()
        .Name("propertyGrid")
        .Model(Model)
        .Width(600)
        .Height(800)
        .Columns(columns => 
        {
            columns.FieldColumn(fieldCol => fieldCol.Width(200));
            columns.ValueColumn(valueCol => valueCol.Width(250));
        })
        ... //Additional configuration
    )
    @addTagHelper *, Kendo.Mvc
    @model PropertyViewMiodel 

    <kendo-propertygrid name="propertyGrid" model="@Model" width="600" height="800">
        <columns>
            <field-column width="200" />
            <value-column width="250" />
        </columns>
        <!-- Additional configuration -->
    </kendo-propertygrid>

6. Handle the PropertyGrid Events

The PropertyGrid exposes events that you can handle and further customize the functionality of the component. In this tutorial, you will use the exposed Edit event to log the current state of the model in the browser's console.

    @model PropertyViewMiodel

    @(Html.Kendo().PropertyGrid<PropertyViewMiodel>()
        .Name("propertyGrid")
        .Model(Model)
        .Events(ev => ev.Edit("onEdit"))
        .... //Additional configuration
    )

    <script>
        function onEdit(e) {
            console.log(e.model);
        }
    </script>
    @addTagHelper *, Kendo.Mvc
    @model PropertyViewMiodel 

    <kendo-propertygrid name="propertyGrid" model="@Model" edit-mode="true" on-edit="onEdit">
        <!-- Additional configuration -->
    </kendo-propertygrid>

    <script>
        function onEdit(e) {
            console.log(e.model);
        }
    </script>

7. (Optional) Reference Existing PropertyGrid Instances

Referencing existing component instances allows you to build on top of their configuration. To reference an existing PropertyGrid instance, use the jQuery.data() method.

  1. Use the Name() option of the component to establish a reference.

        <script>
            var propertyGridReference = $("#propertyGrid").data("kendoPropertyGrid"); // propertyGridReference is a reference to the existing instance of the helper.
        </script>
    
  2. Use the PropertyGrid client-side API to control the behavior of the widget. In this example, you will see how to toggle the expanded or collapsed state of the first group (for example, when a button is clicked).

        @(Html.Kendo().Button()
            .Name("btn")
            .Content("Toggle first PropertyGrid group")
            .Events(ev => ev.Click("onBtnClick")))
    
        <script>
            function onBtnClick() {
                var propertyGridReference = $("#propertyGrid").data("kendoPropertyGrid");
                propertyGridReference.toggleGroup($("#propertyGrid .k-table-group-row.k-grouping-row:nth-child(1)"));
            }
        </script>
    
        @addTagHelper *, Kendo.Mvc
    
        <kendo-button name="btn" on-click="onBtnClick">
            Toggle first PropertyGrid group
        </kendo-button>
    
        <script>
            function onBtnClick() {
                var propertyGridReference = $("#propertyGrid").data("kendoPropertyGrid");
                propertyGridReference.toggleGroup($("#propertyGrid .k-table-group-row.k-grouping-row:nth-child(1)"));
            }
        </script>
    

For more information on referencing specific helper instances, see the Methods and Events article.

Explore this Tutorial in REPL

You can continue experimenting with the code sample above by running it in the Telerik REPL server playground:

Next Steps

See Also

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