I have an MVC grid where I have a Save event defined as follows:
.Events(events => events.Change("gridRowChange").Edit("onEdit").Save("onSave"))
In my JavaScript code I have an onSave(e) function defined that never gets called when a grid item is saved programmatically as follows:
$("#grid").data("kendoGrid").saveRow();
However, if a row is not saved programmatically, or, in other words, when the grid itself saves the row, my Save event does get called.
Related
(MVC Razor) So on my page I have a Kendo grid which contains a DropDownList within a certain column. Now I don't want to fill data of my dropdownlist from controller (With Viewbag/ViewData) before the page loads because it would slow it down, but instead I'd like to fill the DropDownList data on user click with a call to a controller function, and call the read method only once(on first click). How would I be able to achieve this goal?
Set autoBind property to false. It will cause that dropdown will not be filled by data before user click on it.
After component is initialized dataBound event is started so you can set readonly in it.
Demo here
http://demos.telerik.com/aspnet-mvc/grid/editing-custom
Hope this is clear.
I have a view that includes a grid with an existing application. The grid needs to load only after selecting some other inputs in the view. Using one of the "template" approaches like the above example works if you know what the list will contain ahead of time. The grid databinds when the view is rendered, and any ClientTemplate is rendered then. So, rebinding the grid doesnt seem to affect the dropdownlist since it has already been rendered.
However, the contents of the dropdownlist cant be known until the user starts adding items to the grid, so its only then that I to need define whats going to be in the dropdownlist, not from the very beginning when the grid is initially displayed.
How do I define or populate the dropdownlist when the grid is binding or as a result of the read action?
[update]
This is the grid column in question, where now Ive setup the column to have its own datasource, but the action GetSystemItemCodes never gets invoked. There is a read action on the grid itself (not shown), but since the template has already rendered when the grid is displayed the first time, it doesnt matter what I do to update the viewdata, its already been rendered.
columns.Bound(rdetail => rdetail.ItemCode).Title("Item Code").ClientTemplate((#Html.Kendo().DropDownList()
.DataSource(datasrc => datasrc.Read(read => read.Action("GetSystemItemCodes", "SalesVoucher")))
.HtmlAttributes(new { id = "itemCodeDropDown" })
.OptionLabel("- Select Item Code - ")
.DataValueField("ItemCodeID")
.DataTextField("ItemCodeValue")
.Name("itemCodeDropDown")
.Events(e => e.Change("OnItemCodeChange"))
.ToClientTemplate()).ToHtmlString()).Width(230);
I think my next approach will be to filter the dropdown with items being returned when adding a new row.
So suppose my question is at this point is: when defining a datasource for an individual column this way, when does its read action get called? Right after the read action on the grid ? How manually cause the column datasource to refresh or rebind?
Browser: IE 9
Context: An editable, sortable(server side) KendoUI grid is populated.
Issue: The objective is to pop up a message if there are any unsaved changes.
User clicks on a cell
User edits the text in the cell
User clicks on the column header
The grid’s datasource does not catch the edit. Dirty property of the data item is false.
Kendo UI grid always sorts the column. I have been unable to find a way to intercept the sort event and warn the user and cancel the sort event.
Any help is appreciated.
Version: kendoui.aspnetmvc.2013.2.716
In order to cancel the sort event, call event.preventDefault() in the requestStart event of the datasource.
hasChanges() method of the datasource returns false if
Grid columns are reorderable. (.Reorderable(r => r.Columns(true))
//Kendo htmlhelper code)
Sorting is done on the server
User edits the text in a cell and click on the column header
If you remove the Reorderable setting, hasChanges() method of datasource returns true.
Opening a support ticket for this issue.
In the meantime, if you would like to catch the edit with hasChanges() method when user edits the cell and clicks the column header do not set the Reorderable to true.
Here is a video demonstrating the KendoUI Grid issue
Response from Telerik
Basically this is happening because when reordering the event that is used is the mousedown event.
When the mousedown event is triggered the model is still not updated.
As a work-around I can suggest you the following resolution:
Put this in a script block after initializing the Grid. This way if the Grid is still in edit mode, no matter if you have made a change or not the Dragging will be prevented.
$(function () {
var gr = $('#Grid').data().kendoGrid;
gr.thead.on('mousedown', function (e) {
if (gr.tbody.find('.k-edit-cell').length) {
e.stopImmediatePropagation()
}
});
})
i want to change the data in the gridview on a button click by binding it with a different List<> object on server side, It binds the data successfully but since its a post back on button click the grid view gets loaded with the old data which was initialized to it in the page_load method.
how can i avoid calling the page load method after binding the grid with fresh data in the onclick event of my button.
i tried using (!isPostBack) but it dose not help.
Have your button event set a grid parameter that posts back to your server control that indicates that you are changing which datasource feeds the grid, then reload the grid. It should only be now showing the new dataset.
Example:
$('#gridName').jqGrid('setGridParam', { postData: { ChangeGridDataSet: true} }).trigger('reloadGrid', [{ page: 1}]);
I am using jqgrid 3.8. I have a grid which is having some editable columns.I also have an update button to save the grid contents on the server.
If user clicks on editable cell and changes the content and then clicks on update button, i am doing the following things.(after clicking on cell user directly clicks on update button)
first i am calling jqGrid 'savecell' method with iRow, iCol.
here the cell is being saved/ showing popup for validations.
but i want a callback to know whether cell is saved/not so that i can stop or continue my save functionality.
my sample code is like this
function updateGrid(){
// i have iRow, iCol references in beforeEditCell event as grideditRow, grideditCol.. these values r not getting modified nowhere else..
$(gridid).jqGrid('saveCell', grideditRow, grideditCol);
//logic to get grid data using getchangedcells and send ajax call to server.
var changedCells = $(gridid).jqGrid('getChangedCells', 'dirty');
}
how can i stop update logic after saveCell call if savecell is failed. saveCell is returning only jqgrid element.
is there any mechanism to get true/false from savecell or can i pass some callback to savecell?
There are afterSaveCell and errorCell events. One of the events will be called after saving the cell on the server. If you implement the corresponding event handler, you will be notified whether the saving of the new cell value was successful or not.