Questions on UI for ASP.NET MVC Forum

1 answer

110 views

Show Lines Images

I'm trying to enable the ShowLineImages property for ASP.NET MVC TreeView.

How can I do this?

TreeView

answered on 11 Feb 2015

1 answer

196 views

Image / File Browser problems

I am implementing Kendo Editor with image and file browser capabilities.

I have followed the example in demos, and have run into a problem.

Image browser works fine when I use gif or jpeg files, but if I try to use a bmp file, I get a 403 error.

For file browser, I am unable to get a simple xls file to upload without a 403 error.

I know the code is working, as I can upload gif and xls files. Is there another configuration change or other piece of code that is not included in the Demo that needs to be added for me to change the file types accepted by the browser?

I tried the following:
.FileTypes(".bmp,.jpg,.jpeg,.gif,.png")

While that does restrict what the user can attempt, it doesn't allow me to use the file types I need.

Editor

answered on 09 Feb 2015

2 answers

294 views

Non-editable column in InLine grid with dynamic items

The objects that are enumerated in my Kendo MVC Grid are of type dynamic:

@(Html.Kendo().Grid<dynamic

>()

...

I am using InLine editing. I am able to specify the editor for each of my fields as described here:

http://www.telerik.com/forums/inline-editing-mode-and-dynamic-object
http://docs.telerik.com/kendo-ui/aspnet-mvc/helpers/grid/editor-templates

I won't reiterate the approach that is described above, but in summary it involves adding a UIHint attribute to fields in the model, and then using EditorTemplateName to identify an editor template for the field (and that editor template refers to the field via the Name() method). This works.

The problem that I have is that many of my fields need to appear in non-editable columns. My hope was that I could get the grid to render those fields as is (no editor) by:

a. Omit the UIHint attribute from model properties that would not be editable
b. Not specify an EditorTemplateName for non-editable bound columns
c. Set Editable(false) when defining the model (as below):

.DataSource(d =>

{

d.Ajax()

.Model(m =>

{

m.Id("Id");

m.Field("Name", typeof(string)).Editable(false);

However, when I do this the grid fails to load and I see an exception in Fiddler:

[RuntimeBinderException: 'object' does not contain a definition for 'Name']

CallSite.Target(Closure , CallSite , Object ) +152

System.Dynamic.UpdateDelegates.UpdateAndExecute1(CallSite site, T0 arg0) +662

lambda_method(Closure , Object ) +133

Kendo.Mvc.UI.Html.GridDataCellBuilder`2.AppendCellContent(IHtmlNode td, Object dataItem) +131

Kendo.Mvc.UI.Html.GridDataCellBuilderBase.CreateCell(Object dataItem) +230

I have many fields and most of them wil be non-editable, so I would rather not, for example, create editor templates for each of them that contain disabled controls.

What is the best way to configure all my non-editable columns in an InLine grid that is bound to dynamic objects?

thanks,
Derek

Grid

answered on 06 Feb 2015

1 answer

291 views

Reference different column in grid bound to DataTable

Hi,

I'm binding my grid to a DataTable for displaying dynamic search results. I've followed the example on how to do binding with DataTable, but I was wondering if there is a way to reference a different column in the Template / ClientTemplate. I've tried what I regularly do when bound to a Model/ViewModel, but it doesn't seem to work for DataTables. I've tried both

This is what my grid looks like:

@(Html.Kendo().Grid(Model.Result.Data)

.Name("gridSearchResults")

.Columns(columns =>

{

foreach (System.Data.DataColumn column in Model.Result.Data.Columns)

{

if (column.ColumnName != "Id")

{

if (column.ColumnName == "Name")

{

columns.Bound("Name").Template(@<text><a href='" + Url.Action("Details", Model.Result.DataSource) + "/#= Id #'" + ">#= Name #</a></text>);

}

else

{

columns.Bound(column.ColumnName);

}

})

.DataSource(d => d

.Server()

.Model(m => {

m.Id("Id");

foreach (System.Data.DataColumn column in Model.Result.Data.Columns)

{

m.Field(column.ColumnName, column.DataType);

}

})

)

Model.Result.Data is of type DataTable. It renders all the columns fine, but I'd like the name column to be a hyperlink to the details page.. Any suggestions?

Thank you

Grid

answered on 06 Feb 2015

4 answers

196 views

Odd behavior in IE 10

All,

Please see the following video: http://www.screencast.com/t/9UbonHDdPK0 .

In this video it shows that the Drop Down list will close after the scroll bar has been clicked in order to go to a hidden portion of the list. at just past halfway in the video I changed focus to the Kendo.textarea that contains "asdf" and then went back to the drop down list and it works as expected. the exact same page will work fine in Chrome, Firefox, and IE 9. If I select the text area first and then select the dropdown list it works as expected.

Thoughts?

Regards,
Jimm

DropDownList

answered on 05 Feb 2015

1 answer

778 views

Grid Toolbar with the Excel Export and Custom Dropdownlist

How do you add a DropDownlist to Grid Toolbar that is already showing the built in Excel toolbar button.

@(Html.Kendo().Grid<Reports.ReportRow>()

.Name("grdReport")

.DataSource(dataSource => dataSource

.Ajax()

.Read(read => read

.Action("AJAX", "Report")

.Data("GetReportParms")

)

.ToolBar(tools => {

tools.Excel();

tools.Template(@<text>

<div class="toolbar">

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

@(Html.Kendo().DropDownList()

.Name("ddlField")

.DataTextField("Text")

.DataValueField("Value")

.AutoBind(true)

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

.DataSource(ds =>

{

ds.Read("FieldType", "Common");

})

)

</div>

</text>);

})

All the examples I can find show either a DropDownList in a Toolbar Template OR the built in Excel toolbar button. I need both.

Thanks

Grid

answered on 05 Feb 2015

2 answers

779 views

Position a context menu

I have a bunch of buttons that each bring up the same context menu. I need the context menu to position itself at the mouse click on the button.

In ASP.NET this is accomplished by using code like this.

function OpenAddRowMenu(event) {

var contextMenu = $("#AddRowMenu");

if ((!event.relatedTarget) || (!$telerik.isDescendantOrSelf(contextMenu.get_element(), event.relatedTarget))) {

contextMenu.show(event);

    }

else {

alert("Event error");

}

}



The button



<button class="btn btn-primary" onclick="OpenAddRowMenu(event); return false;">Add Row</button>

I cannot find anything on positioning a context menu or any possible parameters to show(). The MVC documentation is really thin and the examples only show so much.

Menu

answered on 05 Feb 2015

1 answer

412 views

Export Chart data to Excel

Hi there

We are using Kendo Charts in our application. We can successfully export the charts using the following jQuery.

$("#exportASPBarChart").click(function () {

var chart = $("#ASPBarChart").data("kendoChart");

var image = chart.imageDataURL();

var a = $("<a>").attr("href", image).attr("download", "ASPBarChart.png").appendTo("body");

a[0].click();

});

Is there a way to export the data to a Excel file?

Thank you.

Chart

answered on 05 Feb 2015

1 answer

350 views

Maintaining State of Kendo Grid through Session

Hi,

I am trying to maintain state of kendo grid like Page Number,Page Size using session. I have referenced below example from your forum

http://www.telerik.com/support/code-library/save-grid-state-in-session-on-server-side

Problem is I don't have any button to Save or Load the grid state like above exmaple.

I am saving the grid state on DataBound event of Grid and Loading the sate back from session in Document.ready function.

But its not working for me as Index_Read function for Ajax binding of Grid is always getting called first before LoadGridState function and thus session object is getting overridden with defualt values for pagesize, pageno etc.

Can you please help me on this.

Thanks
Aarti

Grid

answered on 05 Feb 2015

1 answer

247 views

Kendo UI and MVC 4 - Bind datatable in session

I am having difficulty finding an example for binding the Kendo UI Grid for MVC 4 to a DataTable when using the ASPX view engine.

I reviewed the example in this forum http://www.telerik.com/support/code-library/binding-to-datatable-0191a594e359 and I am finding other examples using the Razor view engine.

Unfortunately, the MVC project to which I am assigned is very large and it is not a priority to convert to the Razor view engine at this time. The priority is a conversion from MVC 2 to MVC 4 and it was expected the upgrade will go more quickly to stay with the ASPX view engine until a later date.

The requirements are
1. Stick with the ASPX view engine for now and
2. Upgrade the controls to work with MVC 4 (for this we are using the latest Kendo UI for MVC 4).

The binding scenario is to pull the DataTable from a session object called "GridResults" (That's right, it's not returned by the controller directly).

We also need to add the DataKeys to the grid when binding to the session-held DataSource.

If there are any examples of binding to a session DataSource returning a DataTable it would be appreciated. Adding data keys would be a bonus.

Thank you

Grid

answered on 05 Feb 2015