I need to allow users to upload images and then do basic editing of them for crop, resize, gamma etc and being able to skew/deskew or de-trapezoid! them - is this functionality already in the RADImageEditor? If not would I be able to extend it easily to support skew or is it better to look at another SDK which has this as inherent functionality?

Thanks,
M

Hi, I am getting this error in Chrome (it's "unable to get property 'firstchild' of undefined or null reference" in IE) when trying to open a RadWindow as a result of a callback.
Subsequent calls of the same callback throw "Cannot read property 'style' of null".
In the callback there's a RadWindowManager.open(url, "popupwnd") that calls some JQuery which in turn definitely throws this error.

I tried every version from 2013.2.717 to the latest nightly build. It still works fine in version 2013.1.417, but I need to support IE11.

Any idea on how to fix or debug it?

Thanks

I have a user control which contains a RadGrid and two RadDatePickers that let you choose the date range for the grid's data source. I've set up a submit button to trigger a partial postback to update the grid with data for the selected date parameters using a RadAjaxManager.


This user control is on a SharePoint 2007 page layout & master page. When debugging, I noticed the first time btnLoadHistory is pressed, the Page_Load event was occurring twice. The first time IsPostBack was true, the second time it was false. Using Fiddler, I found that when I press the button, it does the async postback (POST to the page) as you'd expect, when it gets the response, I see the RadGrid update, and then it immediately does a GET on the same page, hence the IsPostBack == false the second time. It only happens the first time after the page initially loads. After that I can click btnLoadHistory and only the expected postback occurs. Any ideas what's going on?

i am creating tab by using tabstrip with scrolling for multitab .when multiple tab is created like for e.g consider the no. of tabs as 14. initially the scrolling appears but when i  am deleting tab from 14,13, and so on at a point like when i am at tab 8 after deleting the scrolling disappears along with the starting tabs i.e tab1,tab2,tab3. Scrolling disappearing at a point is right but the starting tabs are hidden which causes a problem.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

 

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns='http://www.w3.org/1999/xhtml'>
<head>
    <title></title>
    
    <link href="Style.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
   <%-- <telerik:RadSkinManager ID="QsfSkinManager" runat="server" ShowChooser="true" />
    <telerik:RadFormDecorator ID="QsfFromDecorator" runat="server" DecoratedControls="All" EnableRoundedCorners="false" />--%>
 
        <%--<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="ScrollButtonsOptionsList">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="RadTabStrip1" />
                   
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="PerTabScrollingCheckBox">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="RadTabStrip1" />
                 
                </UpdatedControls>
            </telerik:AjaxSetting>
           
        </AjaxSettings>
    </telerik:RadAjaxManager>--%>

    <div class="exampleWrapper">
        <telerik:RadTabStrip ID="RadTabStrip1" runat="server" Width="400px" ScrollChildren="true" ScrollButtonsPosition="Middle" PerTabScrolling="true" ScrollPosition="0"
            SelectedIndex="0">
            <Tabs>
                <telerik:RadTab Text="Advanced">
                </telerik:RadTab>
                <telerik:RadTab Text="Automatic Updates">
                </telerik:RadTab>
                <telerik:RadTab Text="Remote">
                </telerik:RadTab>
                <telerik:RadTab Text="General">
                </telerik:RadTab>
                <telerik:RadTab Text="Computer Name">
                </telerik:RadTab>
                <telerik:RadTab Text="Hardware">
                </telerik:RadTab>
                <telerik:RadTab Text="System Restore">
                </telerik:RadTab>
            </Tabs>
        </telerik:RadTabStrip>

    </div>
 
   
 
  <%--  <div style="clear: both;"></div>--%>
 
   
    
 
    </form>
</body>
</html>

my code behind file:

using Telerik.Web.UI;

    public partial class Default2 : System.Web.UI.Page
{
        protected void Page_Load(object sender, EventArgs e)
        {
            var tabTemplate = new TabTemplate();
            foreach (RadTab tab in RadTabStrip1.Tabs)
            {
                tabTemplate.InstantiateIn(tab);
            }

        }
        protected void ScrollButtonsOptionsList_SelectedIndexChanged(object sender, EventArgs e)
        {
           // RadTabStrip1.ScrollButtonsPosition = (TabStripScrollButtonsPosition)Enum.Parse(typeof(TabStripScrollButtonsPosition), ((RadioButtonList)sender).SelectedValue);
           
        }
 
        protected void PerTabScrollingCheckBox_CheckedChanged(object sender, EventArgs e)
        {
            //RadTabStrip1.PerTabScrolling = ((CheckBox)sender).Checked;
            //RadTabStrip1.ScrollPosition = 0;
           
        }
        public class TabTemplate : ITemplate
        {
            public void InstantiateIn(Control container)
            {
                Label label1 = new Label();
                label1.ID = "ItemLabel";
                label1.Text = (container as RadTab).Text;
                container.Controls.Add(label1);
                ImageButton imgRemove = new ImageButton();
                imgRemove.Init += imgRemove_Init;
                imgRemove.ID = "ImageButton1";
                imgRemove.Width = Unit.Pixel(9);
                imgRemove.Height = Unit.Pixel(9);
                imgRemove.ImageUrl = "~/cut.png";
                container.Controls.Add(imgRemove);
            }
            void imgRemove_Init(object sender, EventArgs e)
            {
                ImageButton img = (ImageButton)sender;
                img.Click += imgRemove_Click;

            }

            void imgRemove_Click(object sender, ImageClickEventArgs e)
            {
                ImageButton img = (ImageButton)sender;
                RadTab tab = img.Parent as RadTab;

                tab.TabStrip.SelectedIndex = tab.Index - 1;
              
                tab.TabStrip.Tabs.Remove(tab);
            }
        }


        protected void ReorderTabsOnSelectCheckBox_CheckedChanged(object sender, EventArgs e)
        {
            
        }
    }

Hi,
i am using radsplitter but during page load it loads like (load1.png) and then load completely (load.png).
How can i avoid this.
and i dont want any lining for radsplitter , but only want radsplitbar line to clearly separate page in two parts

Thanks

Hi

I have ListView in my page. I have applied paging and filter on list. Once I apply filter and use pagging, it allows to me to access the next page (if I am at page#1 it allows to go to page 2 or 3 or so on) but If I try to come back (go to page# 1 from page# 2 or so) it doesn't change the paging and throws below JS error.

Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.

I have seen this post related to same problem. I think that, we might be missing something. I have checked the demo on the site and it is working fine but in my case it is error out. Please assist.

Thanks.

HI,

Is there any way to get the list of GridBoundColumn DataField or UniqueName value which are in Grouping panel list. My Requirement is to get the columns which are in grouping panel and save it in Database or any where so that later those columns i need to dynamically add to grouping panel.

Thanks and Regards,
Rajender.A

Hi Telerik,

if,grid item double click,we can show item detail






the same process, the Enter button you want to make a pressure,

I tried this code,






because I could not get ID does not show details,


Thank you for your answer.

Hi,

After upgrading to the most recent release of Ajax Radcontrols I'm now seeing an ugly border around an image in a radgrid header. No border is present in the row items, just the header (See image). I've tried all manner of css antics to remove it but nothing works including:

a img
{
    border: none;
} 

.RadGrid a img
{
    border: none !important;
}

I'm using the Office2010Blue Skin. Here's the RadGrid line:-

<telerik:GridImageColumn DataImageUrlFields='Docs' HeaderImageUrl="paperclip.png" SortExpression="Docs" ItemStyle-HorizontalAlign="Center" HeaderStyle-HorizontalAlign="Center"></telerik:GridImageColumn>

Here's the source html that gets generated:-

<th scope="col" class="rgHeader" style="text-align:center;"><input type="image" name="GridView1$ctl00$ctl02$ctl01$ctl00" src="paperclip.png" /></th>

Thanks