I have an ASPX Site with Telerik AJAX, in a editable RadGrid with EditMode="EditForms", each time user press Return, system shows an Object Reference not set to an instance of an object.

RadGrid Definition

 

<telerik:RadGrid RenderMode="Lightweight" ID="GridSCG" runat="server" AutoGenerateColumns="False"
            AllowFilteringByColumn="True" AllowSorting="True" AllowPaging="True" Culture="es-MX"
            OnNeedDataSource="GridSCG_NeedDataSource" OnDeleteCommand="GridSCG_DeleteCommand"
            OnInsertCommand="GridSCG_InsertCommand" OnItemCreated="GridSCG_ItemCreated" OnUpdateCommand="GridSCG_UpdateCommand"
            CellSpacing="-1" GridLines="Both" OnItemDataBound="GridSCG_ItemDataBound" Skin="Telerik">
            
            <PagerStyle PageSizeControlType="RadDropDownList" Mode="NextPrevAndNumeric"></PagerStyle>
            <ClientSettings AllowKeyboardNavigation="true">
                <ClientEvents OnKeyPress="OnKeyPress" />
            </ClientSettings>
            <FilterMenu RenderMode="Lightweight"></FilterMenu>
            <HeaderContextMenu RenderMode="Lightweight"></HeaderContextMenu>
            <ClientSettings AllowKeyboardNavigation="true">
                <Resizing AllowColumnResize="true" ResizeGridOnColumnResize="true" AllowResizeToFit="true" />
                <ClientEvents OnRowDblClick="rowDblClick" />
                <Scrolling AllowScroll="True" UseStaticHeaders="True" SaveScrollPosition="true" FrozenColumnsCount="2"></Scrolling>
            </ClientSettings>

            <MasterTableView AutoGenerateColumns="False" InsertItemPageIndexAction="ShowItemOnCurrentPage" EditMode="EditForms"
                DataKeyNames="DTA_SECUENCIA" CommandItemDisplay="Top">
                <SortExpressions>
                    <telerik:GridSortExpression FieldName="DTA_SECUENCIA" SortOrder="Descending" />
                </SortExpressions>

This is the Error

[NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.Web.UI.GridDateTimeColumnEditor.set_Text(String value) +73
   Telerik.Web.UI.GridBoundColumn.OnDataBindColumn(Object sender, EventArgs e) +2669
   System.Web.UI.Control.OnDataBinding(EventArgs e) +84
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +150
   System.Web.UI.Control.DataBind() +17
   System.Web.UI.Control.DataBindChildren() +185

 

 

 

Is possible to detect Radspreadsheet Select all button is clicked?　(Server or client code)

 

I have a Telerik.XamarinForms.DataControls.RadListView and added a SelectionChanged listener (because I can't find the documentation for ItemTapped method signature). 

In SelectionChanged I navigate to another page, but when the user comes back the item is still selected. So I'd like to clear the selection. 

How?

I'm trying to load the combobox that is inside the radgrid using the RadGrid1_ItemCommand, using the command to insert a new line into the radgrid that is empty, but the following error is displayed: Can not convert an object of type 'Telerik.Web.UI .GridCommandItem 'in type' Telerik.Web.UI.GridEditableItem. Here's a part of the code:

I'll be waiting, thanks
greetings

I've done some considerable searching and experimentation on newline mode. I understand that newlinemode.br or .div are necessary for formatting, alignment, etc. However, .div and .p produce some undesirable results. Both in your online demo and in my dev site.

Take the following simple example in html mode

<div class="im-a-div">
put your cursor after me and press enter 3-4 times

</div>

Switch to design mode and press enter 3 or 4 times.

The result looks like this:

<div class="im-a-div">
dddd
</div>
<p class="im-a-div">&nbsp;</p>
<p class="im-a-div">&nbsp;</p>
<p class="im-a-div">&nbsp;</p>
<p class="im-a-div">&nbsp;</p>

Is there some sort of custom filter, or override that I could apply to the newline that would prevent the classes from being applied to these new block elements - and allow them to be inserted inside the <div> that I had intended to work inside? These new <p>'s aren't even inside the div that I was working inside of, and are being placed afterward.

Ideally, the resulting html should look something like

<div class="im-a-div">

<p>nbsp;</p>
<p>nbsp;</p>
<p>nbsp;</p>

</div>

Hi All,

here is what I am trying to achieve;

While my Telerik data form is in InsertNewItem mode, I need to use user's data entries in any of the RadTextBox as they enter it, before they click on the "Insert" button. I need to be able to extract that data entry once they move focus away from that TextBox so that I can use it to run data query and fill other textboxes in the same InsertItem form template. Later the user will have the ability to click on Insert to add that new record to the SqlDataSource already linked to the Telerik DataForm.

your help is highly appreciated!

Hi, I am new to Kendo UI and especially with its Grid.

Is there a way to emphasise the editable field of a Kendo Grid?

Thank you very much.

I have a RadGrid with a customized GridDrownColumn, everything based on this http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/how-to/customize-griddropdowncolumn The dropdown is working ok, i've had problems cause in gridViewMode the column was empty, however i manage to handle this.

Now the only problem es when the record is in EditMode, the selected value in the combo is always the first element of the list, no matter wich value is selected

protected void GridSCG_ItemDataBound(object sender, GridItemEventArgs e)
        {
            if (e.Item is GridDataItem) //This is how i show the value in view mode
            {
                GridDataItem item = (GridDataItem)e.Item;
                SCG_DATOS_ADUANA_238 row = (SCG_DATOS_ADUANA_238)e.Item.DataItem;
                item["DTA_TRAFICO"].Text = row.DTA_TRAFICO;
            }
            if (e.Item is GridEditableItem && (e.Item as GridEditableItem).IsInEditMode)
            {
                GridEditableItem editedItem = e.Item as GridEditableItem;
                GridEditManager editMan = editedItem.EditManager;

                GridDropDownListColumnEditor editor = editMan.GetColumnEditor("DTA_TRAFICO") as GridDropDownListColumnEditor;
                editor.DataSource = new DropDownListItem[] { new DropDownListItem("I", "I"), new DropDownListItem("E", "E") };
                editor.DataTextField = "Text";
                editor.DataValueField = "Value";
                editor.DataBind();

                SCG_DATOS_ADUANA_238 row = (SCG_DATOS_ADUANA_238)editedItem.DataItem;
                if (row.DTA_TRAFICO != "")
                {
                    if (row.DTA_TRAFICO == "I")
                        editor.DropDownListControl.SelectedValue = "I";
                    else
                        editor.DropDownListControl.SelectedValue = "E";
                }
                
            }
        }

Hi,

I have a RadGrid with ExportToExcel functionality. That works very well.

My problem:

When I filter the data by EndDate (data between two EndDates). Then clicking on ExportToExcel button gives error "The string was not recognized as a valid DateTime."

Here's my markup:

 

Is there something I'm missing?

 

Hi,

I have a radPivotGrid, when i am running it on my local pc and on web server it is working fine.

But on mobile and some other device it is showing grid on half page.