Questions on UI for ASP.NET Core Forum

2 answers

356 views

TabStrip Wizard

I've seen a couple of Telerik examples written for creating a Wizard using the TabStrip but using different technologies. However, I have not had any luck with getting it to work in ASP.NET Core 2.2. Each Tab should be a step in the process that loads a Partial View sharing 1 model. The requirements are:

Tab 1 I have a Hierarchy using your TreeItem control
Tab 2 I have a Grid listing People
Tab 3 I capture some data entry
Tab 4 I submit the data that has been accumulated.

I'd appreciate your help with this,

Joel

TabStrip

answered on 26 Mar 2019

2 answers

1.1K+ views

Filtering a Grid's Template Column based on DropDownList value in ToolBar

Hello,

On my grid's toolbar I have a drop-down list box. Within my grid I have a template column that displays the aggregate of three other columns. When the user selects a value from the drop-down list box I want to filter the grid based on the value that's in the template column. How do I achieve this?

@(Html.Kendo().Grid<Models.GridData>()

.Name("Grid")

.Columns(columns =>

{

columns.Bound(c => c.ColumnA).Width(110).HeaderHtmlAttributes(new { style = "text-align: center;" }).Filterable(false);

columns.Bound(c => c.ColumnB).Width(110).HeaderHtmlAttributes(new { style = "text-align: center;" }).Filterable(false);

columns.Bound(c => c.ColumnC).Width(110).HeaderHtmlAttributes(new { style = "text-align: center;" }).Filterable(false);

columns.Bound("").ClientTemplate("#=calculateField(data)#").Title("Total").HeaderHtmlAttributes(new { style = "text-align: center;" }).Width(110).Filterable(false);

})

.ToolBar(toolbar =>

{

toolbar.ClientTemplateId("GridToolbarTemplate");

})

...

Here's the code for "GridToolbarTemplate"

<script id="GridToolbarTemplate" type="text/x-kendo-template">

<div style="float:left;">

<button class="k-button k-grid-add">New Item</button>

</div>

<div style="float:right;">

<label class="category-label" for="category">Threshold:</label>

@(Html.Kendo().DropDownList()

.Name("thresholds")

.OptionLabel("All")

.DataTextField("Text")

.DataValueField("Value")

.Events(e => e.Change("thresholdChange"))

.BindTo(new List<SelectListItem>()

{

new SelectListItem() {

Text = "3", Value ="3"

},

new SelectListItem() {

Text = "4", Value ="4"

},

new SelectListItem() {

Text = "5", Value ="5"

}

})

.ToClientTemplate()

)

</div>

</script>

The following is my JavaScript for the toolbar and the template column:

function calculateField(data) {

var result = data.ColumnA + data.ColumnB + data.ColumnC;

return result;

}

$(function () {

var grid = $("#Grid");

grid.find(".k-grid-toolbar").on("click", ".k-grid-add-row", function (e) {

e.preventDefault();

grid.data("kendoGrid").dataSource.read();

});

function thresholdChange() {

var value = this.value(),

grid = $("#Grid").data("kendoGrid");

if (value) {

grid.dataSource.filter({ field: "Total", operator: "gte", value: parseInt(value) });

} else {

grid.dataSource.filter({});

}

Your help is appreciated. Thanks.

Shawn A.

Grid

answered on 26 Mar 2019

1 answer

1.1K+ views

Dynamic @Url.Content Value

Can you help me understand this #: EmployeeId # syntax? It seems that is a dynamic value fed in using binding in the TreeList. But, it doesn't seem to work for me:

Your example from demos:

<script id="photo-template" type="text/x-kendo-template">

<div class='employee-photo'

style='background-image: url(@Url.Content("~/shared/web/treelist/people/#: EmployeeId #.jpg"));'></div>

<div class='employee-name'>#: FirstName #</div>

</script>

My instance that doesn't work:

<script id="icon-template" type="text/x-kendo-template">

<div class='group-icon'

style='background-image: url(@Url.Content("~/images/32/#: CurrentType.Name #.png"));'></div>

<div class='group-name'>#: Name #</div>

</script>

My treelist is bound to a list of Groups. On my Group object I have an Object named CurrentType that has a property on it called Name. I want to base the Icon on the Group.CurrentType.Name. So, for each group type I have a different Icon.

Thanks, Joel

TreeList

answered on 25 Mar 2019

2 answers

233 views

TreeList.Selectable(true)

Explain to me how I can work with the Selectable option. I have 2 controls on a page. On the left, I have a TreeList and on the right I have a Grid. The TreeList contains a hierarchical list of groups for which the user is authorized. I'm going to use this group selection to "filter" the data that will be displayed in the Grid control. So, I need the selection of a group in the TreeList to prompt the refresh of the Grid which then must use the groupId of the selected TreeList's node.

On load, how can selection of a TreeList Node be set to a default group from a MVC Action?
On selection, how can this value fire an event that will reload the Grid?

An example would be appreciated. Thanks for your help,

Joel

TreeList

answered on 25 Mar 2019

2 answers

285 views

Deleting from ListBox does not work as expected

Hello,
I am trying implement controls combo between TreeView and ListBox.
The available actions are Add - from TreeView to ListBox and Remove - only remove from the ListBox.
I am using simple buttons from both actions.

The problems after call ListBox.remove(..) are two:
1) the collection listBox.dataItems() remains the same - i.e. the item is deleted only from UI
2) the underlying select HTML controls remains the same - i.e. the MVC/Kenod validators validates the page even the ListBox seems empty

Here is my remove button handler:

function removeFromListBox() {

var listBox = $("#myListBox").data("kendoListBox");

var selected = listBox.select(); // this is an array

listBox.remove(listBox.select()); // Does not deletes the actual data item

console.log(listBox.dataItems()); // listBox.dataItems() is not reduced

}

ListBox

answered on 25 Mar 2019

1 answer

239 views

Incorrect icons with Bootstrap-v4 style

I've recently started working on a new ASP.NET Core project and one element I've been working on is using a Kendo UI grid with a custom button with a text of "Approve". I'm using the Kendo Bootstrap-v4 style but this seems to be causing issues with the button icons. In my grids the standard edit and delete buttons show with the correct icons but if I set my "Approve" button to have a .IconClass("k-i-check") I actually get the download icon. If I choose the "k-i-edit" .IconClass instead then i seem to get k-i-check. If I choose "k-i-checkmark-outline" I seem to get "k-i-email". Is this something I'm missing or an issue with the latest version of the files I have in place? I'm using "Kendo UI v2019.1.220". This is only on my development machine currently.

Css reference as below:

<link rel="stylesheet" href="~/lib/kendo-ui/styles/kendo.bootstrap-v4.min.css" />

Grid column

columns.Command(command => { command.Edit(); command.Custom("Approve").Click("approveUser").IconClass("k-i-checkmark-outline"); }).Width(120);

Thanks in advance for any advice.

Grid

answered on 22 Mar 2019

5 answers

594 views

How to save values entered in ComboBox in Grid Editor PopUp and rebind the ComboBox?

Hello,

I have a requirement where the user needs to be given the ability to enter custom text inside a ComboBox if the value is not already there. The ComboBox is bound to a model. I'm not sure what is the best way to accomplish this. Currently, in my controller I check to see if the Id of the entered text is equal to 0, and then I update the model data. I am able to add the new value to the database, afterwards however, I don't know how to refresh/rebind the combobox to show the newly entered data.

Here's my Html-Helper code for the ComboBox:

@(Html.Kendo().ComboBox()

.Name("SystemType")

.AutoBind(true)

.BindTo((System.Collections.IEnumerable)ViewData["SystemTypes"])

.DataTextField("SystemTypeName")

.DataValueField("SystemTypeId")

.Filter(FilterType.Contains)

.HtmlAttributes(new { style = "width: 350px; background-color: white;" })

.Placeholder("...")

.ClearButton(false))

Here's the code in my Controller to add a new value:

if (asset.SystemTypeId == 1 || asset.SystemTypeId == 0)

{

string SystemTypeName = Request.Form["SystemType"];

if(asset.SystemTypeId == 0 && !string.IsNullOrEmpty(SystemTypeName))

{

SystemType systemType = new SystemType()

{

ProjectId = Id,

SystemTypeName = SystemTypeName

};

_repository.AddSystemType(systemType);

}

else

{

ModelState.AddModelError("SystemTypeId", "System Type is Required");

}

Any help is greatly appreciated. Thanks.

Shawn A.

ComboBox

answered on 21 Mar 2019

9 answers

1.6K+ views

Column Header Height

For some reason the grid column headers have started to size larger than the default. I just commented out any styles for the grids in this application that I declared overriding the default and the issue remains.

I can use this style to change the background color but the height has no effect :

.k-grid-header .k-header
{
background-color: red;
height:20px;
}

Please see attached.

Grid

answered on 21 Mar 2019

2 answers

118 views

Destroy Action not called only when inline row just added

My grid has InLine edit mode. I add a new row and save it through the Edit column button and the DataSource Create Action. Immediately after saving if I delete the new row through the Destroy column button, the DataSource Destroy Action is not called. The Destroy Action is called on any other row that existed when the page was loaded. I can also delete the added row after a page refresh.

Grid

answered on 20 Mar 2019

1 answer

172 views

using @item inside Template

the telerik asp.net mvc grid has the @item to access the bound item inside a .Template . There seems to be no documentation on what the replacement is for asp.net core grids . How do we accomplish this? Can you give an example of a .Template that uses a value from the data

Grid

answered on 20 Mar 2019