Hello!

I am having the following problem: If at least one simultaneously fired create/update/delete fails, Kendo grid keeps the dirty attribute even for the successfully executed create/update/delete operations. This leads to an inconsistent state between the client and the database on the server.

I am providing an isolated example of the problem. Therefore I have modified an official Kendo example by only setting the URL of the update service to a non-existing one: http://dojo.telerik.com/ohAle

Please do the following steps to reproduce the problem:

1. Click (at least one time) on "Add new record"
2. Edit (at least one) an existing record
3. Click on "Save changes": One create and one update request will be fired (see network tab of browser developer tools)
4. The create request will be successful, but the update request will fail (because of wrong URL)
5. Click again on "Save changes": Update request will be fired again, but create request too although it was successful the last time (because of dirty states)
6. You can repeat step five as often as you like. When you restart the example, you will see that all the before create requests where successful

In our project we also integrated the feature to preserve the dirty indicators, which also makes it possible for the user to see the above described problem visually, but it's not important for the isolated example to reproduce the problem: http://docs.telerik.com/kendo-ui/controls/data-management/grid/how-to/Editing/preserve-the-dirty-indicator-in-incell-editing-and-client-operations

I feel like the Kendo grid should be able to handle the success of simultaneously fired create/update/delete requests independently out of the box because this is a very common scenario. However, I found a possible workaround (http://docs.telerik.com/kendo-ui/controls/data-management/grid/how-to/Editing/sync-grid-changes-with-single-request), but this would require a lot of additional coding on the client and server.

Thank you in advance for your support.

Best regards,

Kaan

Hello,

Is there a way to create a Line chart that shows a product price variation and calculates min-max values in order to create a range area on the fly? Regarding the min-max values, they are calculated every week as the arithmetic mean of the last 5 weeks. I've attached a example of how I it's supposed to be (the week value can be out of the range area).

I have been trying to merge Line and Range Area charts (on dojo) without success. This is my last try, but with static min-max values, I still have to figure out how to calculate the values dinamically:

<script>
        function createChart() {
            $("#chart").kendoChart({
                title: {
                    text: "Product price"
                },
                legend: {
                    position: "bottom"
                },
                chartArea: {
                    background: ""
                },
                series: [{
                    type: "rangeArea",
                    data: [[5, 11], [5, 13], [7, 15], [10, 17]]
                }], series: [{
                    name: "Product A",
                    data: [7, 16, 13, 12, 10]
                },{
                    name: "Product B",
                    data: [6, 9, 13, 14, 12]
                },{
                    name: "Product C",
                    data: [3, 5, 14, 12, 13]
                }], seriesDefaults: {
                    type: "line",
                    style: "smooth"
                },valueAxis: {
                    labels: {
                        format: "${0:n2}"
                    },
                    line: {
                        visible: false
                    },
                    axisCrossingValue: -10
                },
                categoryAxis: {
                    categories: ["Week11", "Week12", "Week13", "Week14", "Week15"],
                    majorGridLines: {
                        visible: false
                    },
                    labels: {
                        rotation: "auto"
                    }
                },
                tooltip: {
                    visible: true,
                    format: "{0}%",
                    template: "#= series.name #: #= value #"
                }
            });
        }

        $(document).ready(createChart);
        $(document).bind("kendo:skinChange", createChart);
    </script>

Regards,

Wellington

I have a selectable grid (only one row can be selected). When an item is selected, it is bound to a form for editing. Textbox in the form has a custom binding 'valueInput'. If I select a several different items from a grid and then try to edit current selection in the form, all previosuly selected items are modified. If I change binding to built-in 'value' then it works fine (only last selected item gets modified). How to fix it ?

How get the incorrect behavior:

1. Select an element from grid.

2. Select another element from grid.

3. Modify textbox value.

4. All previously selected items will change.

Script:

Inside ViewModel , a property is declared:

Hi, I have a problem on Kendo Grid with a field that has a lot of text to show in a column only, so I thought to show it as row, as it's displayed in attached image.
The problem, is that when grouping any column, it doesn't work correctly, it's displayed in the following example.
Is there any workaround or feature about that?

Hi , i am new to KendoGrid and have few questions . could you please provide your valuable input on this as i am not able to find the correct solution for below.

#1 - I am aware of custom validation , but is it possible to attach on-fly pattern check while editing  the cell value , if the value doesn't match with pattern the value should be discarded automatically  similar to inbuilt numeric check when we define type=numeric and try to provide character. 

#2 - i need some conversion while editing , such as lowercase to uppercase OR expand abbreviation such as 1k to 1000 ( k stand for 1000) . where i need to place this logic . Editor or Edit event ?

Hi,

I run the demo from https://demos.telerik.com/aspnet-mvc/grid/editing-popup and having error: System.ArgumentException: 'Value cannot be null or empty.
Parameter name: name. It was during the first initial (controller not hit). MVC 5 application.

If I change GridEditMode.PopUp to GridEditMode.InCell or InLine then Grid works fine. Is it some setup problem? Is there any scripnt needs to be included in bundle in case of GridEditMode.PopUp?

Here is the Grid code:

@(Html.Kendo().Grid<OnTargetInv.Models.EmailAddress>()
.Name("GridEmails")
.Columns(columns =>
{
columns.Bound(p => p.Email);
columns.Bound(p => p.EmailAddressID).Width(140).Hidden();
//columns.Bound(p => p.InactiveDate).Width(140);
columns.Command(command => command.Destroy()).Width(150);
})
.ToolBar(toolbar => toolbar.Create())
.Editable(editable => editable.Mode(GridEditMode.PopUp))
.Pageable()
.Sortable()
.Scrollable()
.HtmlAttributes(new { style = "height:550px;" })
.DataSource(dataSource => dataSource
.Ajax()
.PageSize(20)
.Events(events => events.Error("error_handler"))
.Model(model => model.Id(p => p.EmailAddressID))
.Create(update => update.Action("EditingPopup_Create", "Client"))
.Read(read => read.Action("EditingPopup_Read", "Client"))
.Update(update => update.Action("EditingPopup_Update", "Client"))
.Destroy(update => update.Action("EditingPopup_Destroy", "Client"))
)
)

Thanks.

Hello,

https://dojo.telerik.com/@alexy99/acOsisiF

On Add task sometimes I get below, sometimes: Maximum call stack exceeded. As per below post I tried defaultValue for parentId but no go.

https://www.telerik.com/forums/error-when-the-data-type-of-the-id-and-parentid-to-string

Uncaught TypeError: Cannot read property 'data' of undefined

    at init.setup (kendo.all.min.js:27)
    at init.create (kendo.all.min.js:27)
    at Object.<anonymous> (kendo.all.min.js:28)
    at Function.Deferred (jquery-1.12.3.min.js:2)
    at init._promise (kendo.all.min.js:28)
    at init._send (kendo.all.min.js:28)
    at init.sync (kendo.all.min.js:27)
    at init._syncDataSource (kendo.all.min.js:85)
    at init._createTask (kendo.all.min.js:84)
    at init.r (kendo.all.min.js:84)