Questions on UI for ASP.NET MVC Forum

3 answers

198 views

[Solved] data-uid missing on 1/2 of items

Hello

We have a Listview that populates with an IEnumerable<object> The data source is set and the read called when a Kendo DropdownList.Change Event is called.

We have found that the first 1/2 the records with generate elements with data-uid, role="option" & aria-selected="false", while the latter 1/2 do not. There is no difference in the records, if we add a single record to the list at a time, it will produce the same result, the first 1/2 with, the second 1/2 without.

we are using an external template (pls see below):

We see this behavior on 2 different ListViews, albeit on the same page with the same data types (objects).

Thanks for your help in advance

ListView

answered on 11 Apr 2016

2 answers

1.2K+ views

DropDownList in Grid Cell

So, I've tried to get this working following many threads and articles and I can't get it to work. The value posts back to the controller fine, but I can't get it to set the default selected item on the DropDownList nor can I get it to display the text of the selected item when I select an option. If I use a client template to try and grab the text, it throws an error (Cannot read property 'Text' of null) and won't show any items in the grid. For this one, I'm not using just an IEnumerable list of ViewModels (like most of the examples show) to populate the DropDownList, I'm using a SelectList. I have it working fine in another project with an IEnumerable list of ViewModels, but I just can get it working with a SelectList and I don't want to create a ViewModel for these static options. Please help! Thanks!

Here's my grid:

@(Html.Kendo().Grid<Tracker.Areas.Admin.Models.AdHocLocationViewModel>()

.Name("gridAdHocLocations")

.Columns(columns =>

{

columns.Bound(c => c.LocationName).Title("Reviewer Location");

columns.Bound(c => c.Packet).Title("Added to");

columns.Bound(c => c.CreateDt).Title("Date Added").Width(120).Format("{0:MM/dd/yyyy}");

columns.Bound(c => c.Action).Title("Selection").ClientTemplate("#=Action.Text#").Width(180);

})

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

.ToolBar(t => t.Save())

.Sortable()

.Pageable(pageable => pageable

.Refresh(true)

.PageSizes(true)

.ButtonCount(5))

.DataSource(dataSource => dataSource

.Ajax()

.PageSize(20)

.Batch(true)

.ServerOperation(false)

.Model(s =>

{

s.Id(model => model.LocationId);

s.Field(f => f.LocationName).Editable(false);

s.Field(f => f.Packet).Editable(false);

s.Field(f => f.CreateDt).Editable(false);

s.Field(p => p.Action).DefaultValue(

ViewData["defaultAction"] as SelectListItem);

})

.Read(read => read.Action("LocationsAdHoc_Read", "Location"))

.Update(update => update.Action("LocationsAdHoc_Update", "Location"))

)

Here's my editor (I've also tried it strongly typed using DropDownListFor):

@(Html.Kendo().DropDownList()

.Name("Action")

.DataValueField("Value")

.DataTextField("Text")

.OptionLabel("Select Action")

.BindTo((SelectList)ViewData["actions"])

)

Here's my model:

public class AdHocLocationViewModel

{

[ScaffoldColumn(false)]

public int LocationId { get; set; }

public string LocationName { get; set; }

public string Packet { get; set; }

public int ActionId { get; set; }

public DateTime CreateDt { get; set; }

[UIHint("AdHocLocationEditor")]

public SelectListItem Action { get; set; }

}

Grid

answered on 08 Apr 2016

5 answers

210 views

[Solved] Export To Excel with Aggregate

Hi,

When I'm using the export to excel function it works fine. But once I add an aggregate to the datasource as in one of the demos, I get the error attached.

Is one of my configurations wrong?

Your help will be much appreciated.

Thanks,

Waldo

My Code is as follows:

@helper TreeGrid()

{

<div>

@(Html.Kendo().TreeList<OrgStructureViewModel>()

.Name("treelist")

.Columns(columns =>

{

columns.Add().Field(e => e.Full_Name)

.FooterTemplate("<strong>#= count # employee(s)</strong>");

columns.Add().Field(e => e.Emp_No);

columns.Add().Field(e => e.Man_No).Hidden(true);

columns.Add().Field(e => e.Division_ID).Template("#= Division #");

columns.Add().Field(e => e.Title);

columns.Add().Command(c => { c.Edit(); c.Destroy(); }).Width(220);

})

.Toolbar(x => { x.Create(); x.Excel(); x.Pdf(); })

.Editable(x => x.Mode("popup"))

.Filterable()

.ColumnMenu(true)

.Scrollable(true)

.Sortable()

.Resizable(true)

.Excel(excel => excel

.FileName("Reporting_Line.xlsx")

.ProxyURL(Url.Action("Export_Save", "Reporting_Line"))

)

.Pdf(pdf => pdf

.FileName("Reporting_Line.pdf")

.ProxyURL(Url.Action("Export_Save", "Reporting_Line"))

)

.Events(ev => ev.Edit("onEdit"))

.DataSource(dataSource => dataSource

.Read(read => read.Action("Reporting_LineRead", "OrgStructure"))

.Update(update => update.Action("Reporting_LineEdit", "OrgStructure"))

.Create(create => create.Action("Reporting_LineAdd", "OrgStructure"))

.Destroy(delete => delete.Action("Reporting_LineDelete", "OrgStructure"))

.ServerOperation(false)

.Aggregates(aggr =>

{

aggr.Add(e => e.Full_Name).Count();

})

.Model(m =>

{

m.Id(f => f.Reporting_Line_ID);

m.ParentId(f => f.ReportsTo);

m.Field(f => f.Emp_No);

m.Field(f => f.Man_No);

m.Field(f => f.Division_ID);

m.Expanded(false);

})

)

}

<script type="text/javascript">

function onEdit(e) {

console.log(e);

if (!e.model.isNew()) {

$("#Emp_No").data("kendoComboBox").enable(false);

} else {

$("#Division_ID").data("kendoDropDownList").enable(false);

}

function filterEmployees() {

console.log($("#Emp_No").data("kendoComboBox").value());

return {

empNo: $("#Emp_No").data("kendoComboBox").value(),

text: $("#Man_No").data("kendoComboBox").text()

};

}

</script>

TreeList

answered on 08 Apr 2016

2 answers

101 views

Can you pass an ID via Update?

Hey,

I would like to pass an ID to my controller when the update event is fired on my grid. Has anyone done this before?

.Update(update => update.Action("data_update", "Home"))

Grid

answered on 08 Apr 2016

2 answers

276 views

[Solved] Foreign key dropdown depending on content

Hi, as i'm new to these forums, i hope you will not be to hard on me if the solutions is obvious :-)

Let's say i have setup this grid with Products including a foreign key dropdownlist to ProductTypes. Some of these ProductTypes are no longer in use (marked boolean property 'IsValid')
The requirement is that all Products with ProductType are shown independent of the 'IsValid property'. So far so good.
Now the point where i need some help: when a record is added, i would like the ProductType dropdown to only list ProductTypes that are marked as valid. And to make it even more difficult: When a row is in edit mode, i would like the dropdown to only show the valid ProductTypes AND the current ProductType even if that is invalid.

public class ProductController : Controller

{

private DBEntities db = new DBEntities ();

public ActionResult Index()

{

ViewData["ProductTypes"] = db.ProductTypes.Select(b => new { Id = b.idProductType, Name = b.ShortName });

return View();

}

@(Html.Kendo().Grid<Data.EF.Models.Product>()

.Name("grid")

.Columns(columns =>

{

columns.Bound(c => c.Code);

columns.Bound(c => c.Color);

columns.ForeignKey(c => c.idProductType,

(System.Collections.IEnumerable)ViewData["ProductType"], "Id", "Name").Title("Type");

columns.Command(command => { command.Edit(); command.Destroy(); }).Width(180);

})

.ToolBar(toolbar => {

toolbar.Create();

toolbar.Excel();

})

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

.Sortable(sortable => {

sortable.SortMode(GridSortMode.MultipleColumn);

})

.Filterable()

.Scrollable(scrollable => scrollable.Enabled(false))

.DataSource(dataSource => dataSource

.Ajax()

.Model(model => model.Id(p => p.idProduct))

.Read(read => read.Action("KProduct_Read", "Product"))

.Create(create => create.Action("Product_Create", "Product"))

.Update(update => update.Action("Product_Update", "Product"))

.Destroy(destroy => destroy.Action("Product_Destroy", "Product"))

)

Grid

answered on 08 Apr 2016

14 answers

1.1K+ views

Model property not set when bound to object

I have these model classes:

public class Part

{

public Guid Id { get; set; }

string Name { get; set; }

public Part()

{

}

public class DetailItem

{

public Guid Id { get; set; }

public Part Part { get; set; }

public DetailItem()

{

}

In my View, the model is the DetailItem. I am trying to use a ComboBox to select the Part for the DetailItem:

@(Html.Kendo().ComboBoxFor(model => model.Part)

.DataValueField("Id")

.DataTextField("Name")

.Filter(FilterType.Contains)

.DataSource(source =>

{

source.Read(read =>

{

read.Action("GetParts", "RefData");

})

.ServerFiltering(true);

}

)

When I save the page, the DetailItem.Part never gets set from the ComboBox. How do I make this work?

ComboBox

answered on 07 Apr 2016

4 answers

314 views

Prevent double post on filter/sort reset

I have a grid with a large data set and I have a button that clears filters and sorting but each one causes a refresh of the data:

$(function () {
$("#reset").click(function (e) {
e.preventDefault();
var datasource = $("#grid").data("kendoGrid").dataSource;
//Clear filters:
datasource.filter([]);

//Clear sorting:
datasource.sort({});
});
});

Is there a way to combine this to only refresh the data once.

Thanks,

Erik

Grid

answered on 07 Apr 2016

1 answer

374 views

ComboBox Grouping and SelectedIndex

I've got a ComboBox which uses Grouping and I'm having trouble setting the selected item:

@(Html.Kendo().ComboBox()
.Name("GroupedList")
.Placeholder("Select...")
.DataValueField("Value")
.DataTextField("Text")
.MinLength(3)
.Filter("contains")
.HtmlAttributes(new { style = "width:100%;" })
.Height(400)
.DataSource(source => source
.Custom()
.Group(g => g.Add("GroupKey", typeof(string)))
.Transport(transport => transport
.Read(read =>
{
read.Action("GetMyItems", "MyController");
})
)
.ServerFiltering(false)
)
)

My controler is returning JSON in the following format with one of the items optionally having "Selected":true

[{"GroupKey":"Address","GroupName":"Address","Selected":false,"Text":"Correspondence Post Code","Value":"821"},...etc..]

ComboBox

answered on 07 Apr 2016

1 answer

119 views

[Solved] New grid filter operators not working on DateTime

Hi,

I'm using version 2016.1.226 and the new "Is null" and "Is not null" filters are not working correctly on DateTime columns (as well as DateTime? columns).

When I select "Is null" on a DateTime column, it seems to filter the column but the Cancel button (the X button next to filter) does not appear. Then I select "Is not null" and then "Is null" again, the Cancel button appears but it does not do anything. So the only way to get rid of the filtering is to refresh the page.

These filter operators seem to work on String columns though.

Thanks.

Grid

answered on 07 Apr 2016

4 answers

366 views

[Solved] DropDownList event timing - event after selection is completely done

Hi,

I'm trying to use a DropDownList event to trigger a complex page update (updating a bunch of divs, DataSource reads, etc), and cannot find an event that happens at the right *time* to get the behavior I want. I want to call a javascript function AFTER the user has selected an item from the dropdownlist, AND the DropDownList has refreshed with the user's selection. All the events listed here (http://docs.telerik.com/kendo-ui/api/javascript/ui/dropdownlist#events) fire BEFORE the widget completes updating. The reason I want to do this is to show a "Loading...." message, while the complex page update takes place (it is very complex and takes a couple of seconds), then hide "Loading" and show the new stuff.

Are there any other events I could use to trigger my activity? Executing my update function via an event handler for any of the documented events resulting in the following sequence:

-drop down list expands

-user picks an item

-the page sitting for a couple of seconds while my update happens, with the list still expanded

-drop down list retracts and the page finishes nicely ....

I need an event that fires AFTER the DropDownList finishes updating.

bootstrap has such an event, as shown here:

http://www.w3schools.com/bootstrap/tryit.asp?filename=trybs_ref_js_dropdown_events&stacked=h

the hidden.bs.dropdown event is what I want.

Is there a generic Kendo equivalent, or workaround? The control doesn't have to be a drop down list, its just that was simplest - there are very few items in it. I would prefer to stick with a simple Kendo control, but if there isn't an appropriate event I'll use something else or a workaround -

Thanks!

DropDownList

answered on 06 Apr 2016