I have a problem that when we datasource.read() it gets cached data and not up-to-date data from the server.
Of course it seems that it only does it in internet explorer... firefox works fine.

We send a query string with a random number to keep the request from getting cached data.




If you profile it it firefox:
1rst request:   ?nocache=0.36012812319771115
2nd request:   ?nocache=0.5465367197402407
3rd request:   ?nocache=0.5722005265817256

If you profile it in IE:
1rst request:   ?nocache=0.6602959470869887
2nd request:   ?nocache=0.6602959470869887
3rd request:   ?nocache=0.6602959470869887

How can I keep the datasource.read() from reusing the same value (url) it had when first called or initiated??
Or is there any "no cache" like option?

Team,
     I'm looking for a way to override the parameter names passed to the service when calling read or even just overriding the read to be able to modify the url to change it to my liking.  I would like to override the parameter so that instead of passing things like take=20 for page size, it would pass $take=20...  Thanks!

which is the best way to rebind data for charts



from js and asp.net mvc extensions.



Documentation is not as deep as the older controls

Hi,
I have a grid with connected to remote data-source which bound to 7 fields
I want to display only  5  columns when grid loads
But when i want to edit form pops i want to show the 7 columns

How can i config columns in grid that control what to be seen in grid and what to be seen in edit form

http://docs.kendoui.com/api/web/grid

Your feedback is appreciated



Best Regards
Wael

Hey Guys,

First, I want to say you guys did a great Job on Kendo UI, we are planing to upgrade from MVC extension to Kendo.
My issue is on the grouped line chart the legend is taking the default sort of the group data and showing as the attached image.
Is there a way to control the order on the legend?

<%= Html.Kendo().Chart<TestOrders>()
        .Name("Hl7Line")
        .Title("Number of NEW ORDERS PER HOUR BY MONTH  -  RUNNING TOTAL")
        .ChartArea(chartArea => chartArea.Background("transparent"))
        .Legend(legend => legend.Position(Kendo.Mvc.UI.ChartLegendPosition.Right))
        .DataSource(ds => ds
            .Read(read => read.Action("AJaxOrdersPerHourByMonth", "Dashboard"))
            .Group(group => group.Add(m => m.MonthName))
            .Sort(sort => sort.Add(m => m.Hour).Ascending())
        )
        .Series(series => series
            .Line(model => model.NumberOfOrders)
            .GroupNameTemplate("#= group.value #")
        )
        .CategoryAxis(axis => axis
            .Categories("12AM", "1AM", "2AM", "3AM", "4AM", "5AM", "6AM", "7AM", "8AM", "9AM", "10AM", "11AM", "12PM", "1PM", "2PM", "3PM", "4PM", "5PM", "6PM", "7PM", "8PM", "9PM", "10PM", "11PM")
            .Title("Hours of Day")
        )
        .ValueAxis(axis => axis
            .Numeric().Labels(labels => labels.Format("{0}"))
            .Title("Number of Orders")
        )
        .Tooltip(t => t.Visible(true).Format("{0}").Template("#=series.name# (#= value#)"))
        .Transitions(true)
    %>

Hi, I have a following scenario:

- for each day in month, I need calendar to indicate if a task is done or not done for that day
- I could use icons as a markers like in 'Customizing Templates' example, but calendar might look too cluttered
- I'd prefer to set date cell background color to green or red to indicate if task is done or not.

I did check the documentation, but couldn't find any direct way to do it. The template for dates in month view looks promising, but I don't have enough knowledge of that. So, could you help me with this problem? Is there a feasible way to change date cell background color, or should I use some alternative way?

I have a Kendo Chart defined on my cshtml page as below:

@(Html.Kendo().Chart<MyModel>()
        .Name("chart")
        .Title("")
        .Legend(legend => legend
            .Visible(false)
        )
        .Series(series =>
         {
                    series.Scatter(model => model.X, model => model.Y);
                    series.Scatter(model => model.X, model => model.Y);
        })
        )
        
I need to set the data of each of these series using a JQuery call. 


 function GetChartData(ex,ten) {
            var str = "{'arg': '" + ex + "', 'arg2': '" + ten ' }";
            $.ajax({
                type: 'POST',
                url: '/Controller/CreateChartData',
                dataType: "json",
                contentType: "application/json; charset=utf-8",
                data: str ,
                success: function (data) {
                
                    var grid = $("#chart").data("kendoChart");
                    grid.dataSource.data(data.ChartData);
                    grid.refresh();
                    
                },
                error: function (xhr, ajaxOptions, thrownError) {
                    alert(xhr.status);
                    alert(thrownError);
                }
            });

The above will set the 1st series data, but I need to be able to set the second series as well. I have all of the data returning correctly from the database, but no way of setting both series data.

I have tried the following which rendered nothing on the chart:

 function GetChartData(ex,ten) {
            var str = "{'arg': '" + ex + "', 'arg2': '" + ten ' }";
            $.ajax({
                type: 'POST',
                url: '/Controller/CreateChartData',
                dataType: "json",
                contentType: "application/json; charset=utf-8",
                data: str ,
                success: function (data) {
                
                    var grid = $("#chart").data("kendoChart");
    grid.options.series[0].data = data.ChartData;
     grid.options.series[1].data = data.ChartDataSeries2; 

                    grid.refresh();
                    
                },
                error: function (xhr, ajaxOptions, thrownError) {
                    alert(xhr.status);
                    alert(thrownError);
                }
            });

 
                  

I do not know if this is possible, or if this can be added to a new version of the DataViz toolkit.

I would like to be able to add an image, or icon inside a Bubble Chart so you know exactly what it is with just looking at it

Thanks

How to add 'Menu' next to title of 'Window' Component or on hover of custiom icon how to populate a menu with 4 items

Thanks,
Chetan

The following code is dataSource for validating values via a controller method:

            SampleDataSource: new kendo.data.DataSource({
                transport: {
                    read: {
                        url:  "Sample/ValidateSampleCodes",
                        contentType: "application/json; charset=utf-8",
                        dataType: "json",
                        type: "POST"
                    },
                    parameterMap: function (options, operation) {
                        return JSON.stringify({ SampleCode: options.SampleCode });
                    },
                },
                schema: {
                    model: {
                        id: "Id"
                    },
                    parse: function (data) {
                        viewModel.set("SampleCodesFromDB",data[0]);
                        return data;
                    }
                }
            }),

The following code is the grid in which i need to validate values entered, instantly and display an in-line validation message. I am using the custom validator as shown below...

                $("#Sample-code-grid").kendoGrid({
                    dataSource: { 
                        data: viewModel.SampleCodes,
                        schema: {
                            model: {
                                id:"Id",
                                fields : {
                                    SampleCode : { editable: true, validation: { custom: function (input) {
                                            var isValid = true;
                                            if (input.attr("name") == "SampleCode") {
                                                
                                                // Reading the below datasource to check if value already exists in DB
                                                
                                                viewModel.SampleDataSource.read({ SampleCode: input.val() });


                                                // When debugging, i find that the above read method call is skipped until 
                                                // custom validator function is fully executed...


                                                var isValidMessage = viewModel.get("SampleCodesFromDB");
                                                if(isValidMessage == "Code Exists")
                                                    isValid = false;
                                                if(!isValid)
                                                    input.attr("data-custom-msg", "Sample Code already added.");
                                            }
                                            return isValid;
                                        }
                                        }
                                    }
                                }
                            }
                        },
                        change: function(e) {
                            if(e.action == "itemchange" || "remove") {debugger;
                                viewModel.SampleCodes = [];
                                $.each(e.sender.data(), function(inx, val) {
                                    viewModel.SampleCodes.push({ SampleCode : val.SampleCode });
                                });
                            }
                        }
                    },
                    selectable: true,
                    editable: "inline",
                    toolbar: [{ name: "create" , text : "Add Sample Code" }],
                    columns: [
                        { field: "SampleCode", title: "Sample Codes" },
                        { command: ["edit", "destroy"], title: "&nbsp;", width: "210px" }
                    ]
                });

I have added some comments inside the code so that you get some idea about my problem. I just need to know how to approach validation for duplicates using the custom validator that calls a dataSource for the same purpose.

Any help will be greatly appreciated.