Questions on UI for ASP.NET AJAX Forum

1 answer

181 views

Hi,

I am using a RadListBox and I would like to find if the items that are selected in this list when clicking on a search button. However, when doing the following I have no item selected (the Label text is = 0) and I do not see why?

In my Search.ascx:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="Search.ascx.cs" Inherits="Controls.Search.Search" %>

<telerik:RadListBox ID="List1" runat="server" SelectionMode="Multiple" CssClass="rListBx"/>

In my Search.ascx.cs:

Label.Text = List1.SelectedItems.Count().ToString();

My Search_Click function is in a partial class that inherits from System.Web.UI.UserControl

In my Search.ascx.designer.cs

protected global::Telerik.Web.UI.RadListBox List1;

An idea about what I am doing wrong here?

Thanks

ListBox

answered on 29 Jun 2016

2 answers

77 views

Finding out any changes to the RadAsyncUpload control by user or not? (Any file added/updated/deleted)

Hi,
I want to find out changes to the controls on the form if any element is changed but without saving it if the user moves to the other pages I want to show the user to ‘some unsaved changes are there do you want to save it or not?’ something like to show to the user. For archiving this I am using the JavaScript. With this I was able to find out any changes to all the controls on the form except RadAsyncUpload control.
Can you please advise how can I find out the changes to this RadAsyncUpload control using javascript?
Thanks,

AsyncUpload

answered on 29 Jun 2016

2 answers

90 views

Geting " no data to display message" even though my datasource has data

So I'm binding the data to the treelist via datatable. It defintely has data (over 2000 rows), and I'm using the needsdatasource event handler to bind. It must be recognizing SOMETHING because after it binds, the column names from the data appear in the list it just show no data. VS 2015 is that makes a difference. Code below:

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

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<meta http-equiv="X-UA-Compatible" content="IE=edge"/>

<title></title>

</head>

<body>

<form id="form1" runat="server">

<telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>

<div>

<telerik:RadDateTimePicker runat="server" ID="datePicker" Width="175px"></telerik:RadDateTimePicker><asp:Button runat="server" ID="btnLoad" Text="Load" OnClick="btnLoad_Click" /><asp:Button runat="server" ID="btnExport" OnClick="btn_Export_Click" Text="Export To Excel" /><br />

<telerik:RadTreeList ID="RadTreeList1" runat="server" AllowPaging="true" PageSize="3" DataKeyNames="USERID"

OnNeedDataSource="RadTreeList1_NeedDataSource" ParentDataKeyNames="CustomerID">

</telerik:RadTreeList>

</div>

</form>

</body>

</html>

using System;

using System.Collections.Generic;

using System.Configuration;

using System.Data;

using System.Data.SqlClient;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Telerik.Web.UI;

namespace xxx.xxx

{

public partial class Tracker : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

datePicker.SelectedDate = DateTime.Now;

}

protected void RadTreeList1_NeedDataSource(object sender, Telerik.Web.UI.TreeListNeedDataSourceEventArgs e)

{

var dt = GetDataSource();

RadTreeList1.DataSource = dt;

}

protected void btnLoad_Click(object o,EventArgs e)

{

RadTreeList1.Rebind();

}

protected void btn_Export_Click(object o,EventArgs e)

{

RadTreeList1.ExportSettings.Excel.Format = TreeListExcelFormat.Biff;

RadTreeList1.ExportToExcel();

}

public DataTable GetDataSource()

{

var dt = new DataTable();

var strQuery = "";

strQuery += " select ";

strQuery += " USERID [CustomerID]";

strQuery += ", USERID ";

strQuery += ", FileInput";

strQuery += ", MeterNo ";

strQuery += ", MeterName ";

strQuery += " ,LastReadTime ";

strQuery += " from xx i ";

strQuery += " JOIN xxx u ON u.CustomerID = i.USERID ";

strQuery += " where ConnectionDevice = 18 AND isActive=1";

strQuery += " and u.isParent = 1 ";

strQuery += " AND Time<@Time ";

strQuery += " order by userid,fileinput,meterno";

using (var con = new SqlConnection(ConfigurationManager.ConnectionStrings["xxx"].ConnectionString))

{

con.Open();

var cmd = new SqlDataAdapter(strQuery, con);

cmd.SelectCommand.Parameters.AddWithValue("@Time", "11/1/2015");

cmd.Fill(dt);

}

return dt;

}

Like I said it displays the treelist with all the columns from the query and corresponding datatable fine, but it's not displaying any data despite having 2000+records.

TreeList

answered on 29 Jun 2016

2 answers

202 views

How to centre tiles

Hi,

I have 4 icon tiles that are shape=wide set to TileRows=2. How do I centre these on the screen (left-right)?

TileList

answered on 29 Jun 2016

1 answer

79 views

Wizard Performance with large no. of user fields

Hi,

I need to create a multi-level form for one of my requirements.

I have to create around 8 levels and each level will contain about 15 user fields (fields like textbox,checkbox, dropdown, radio buttons, file upload options so on..)

Will using RadWizard control be apt for my requirements ? and if i use radwizard will there be any performance issue as i will be having more that 100 user fields in a single page. Also, thanks to let me know if there are any other alternative for achieving my requirements.

Thanks in advance for the response.

Wizard

answered on 29 Jun 2016

6 answers

254 views

technical formula editor

is it possible to insert technical formulas into the radeditor?
we want to buy the kwizcom wikiplus and i've heard, that they use the telerik radeditor as editor.
our users want a technical formular editor like LaTeX.

or is there another editor we can install to have this feature?

thanks for your help.

Editor

answered on 29 Jun 2016

2 answers

169 views

how to target dropdownlist for jquery event

I have added to my form a change to my save button if any (various) inputs are changed.

$(document).ready(function () {

$("input,select,textarea").change(function () {

$("#<%=btnSaveDataFull.clientid %>").addClass('SkinPulgin_button_update');

});

this works for the textboxes, textareas ,comboboxes
but not dropdownlists changes.

DropDownList

answered on 29 Jun 2016

1 answer

69 views

RadMenu font different when RadNotification is added

I am very confused by the following. The system design is a masterpage with 2 ContentPlaceHolders. The RadMenu is part of the masterpage with a SqlDataSource, and I am using "Silk" skin.

On the Content Page everything looks correct menu where it should be, however as soon as I add a RadNotification in the Contant Page, the menu side is bigger, it looks like the padding is off... However when I remove the RadNotification, everything goes back to normal...

Does anybody as to why this is happening, and how to fix it?

Menu

answered on 29 Jun 2016

4 answers

236 views

reflowing error in IE

Hello,

Have a model radwindow open where the contents of the page contains an asp repeater that generates dynamically rad input controls.

Everything works great until something in the page does an ajax callback.

At that point it is is still ok until you try to do something with the radwindow (move, close, resize ect..)

When you do I get the following error message

"Error: Unable to get property 'reflowing' of undefined or null reference"

trigger [Line: 11557, Col: 33], Telerik.Web.UI.WebResource.axd
b.DropDown.prototype.reflow [Line: 12369, Col: 1], Telerik.Web.UI.WebResource.axd
Anonymous function [Line: 12401, Col: 36], Telerik.Web.UI.WebResource.axd
m.event.dispatch [Line: 1522, Col: 8380], Telerik.Web.UI.WebResource.axd
r.handle [Line: 1522, Col: 5064], Telerik.Web.UI.WebResource.axd

This error only occurs in IE (tested in IE 11, chrome and firefox)

Was wondering if anyone has run into this before and what can be done to fix this.

Thanks.

Window

answered on 28 Jun 2016

3 answers

81 views

RadRotator Not Refreshing

Telerik Support,

I have one page that has a RadGrid with a GridHyperLinkColumn. When the user clicks the hyperlink, a second page with a RadRotator is opened up in a new browser window. Let's say I have 2 rows of data in the grid. If I click on the first link, the image displays as expected in the RadRotator. Next if I click on the second hyperlink, it should set no images for the RadRotator, but instead the RadRotator's datasource seems to somehow be cached and reloads the initially loaded image.

Vice versa creates a similar issue. Stop running the app and restart it. Click on the second hyperlink first and the RadRotator is displayed with no image. Next click on the first hyperlink and still no image is loaded. The expected result no matter what order is selected is for the first hyperlink to display an image in the RadRotator and the second hyperlink should not display an image in the RadRotator.

Here is a video reproducing the issue both ways with a simple example: http://screencast.com/t/2batqcc8

Here is the code for page 1

ImageList.aspx

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="ImageList.aspx.vb" Inherits="TestBed.ImageList" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"></telerik:RadAjaxManager>

<telerik:RadGrid ID="RadGrid1" runat="server" Height="100%" Width="100%" AutoGenerateColumns="false">

<MasterTableView>

<Columns>

<telerik:GridHyperLinkColumn DataTextField="Text" HeaderText="Image" Target="_blank" UniqueName="Text"

DataNavigateUrlFormatString="~\ImageViewer.aspx?image={0}" DataNavigateUrlFields="Image">

</telerik:GridHyperLinkColumn>

</Columns>

</MasterTableView>

</telerik:RadGrid>

</div>

</form>

</body>

</html>

ImageList.aspx.vb

Public Class ImageList

Inherits System.Web.UI.Page

Private Sub RadGrid1_NeedDataSource(sender As Object, e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Handles RadGrid1.NeedDataSource

Dim dt As New DataTable

Dim dr As DataRow

Dim col As New DataColumn("Image", GetType(Boolean))

dt.Columns.Add(col)

col = New DataColumn("Text", GetType(String))

dt.Columns.Add(col)

dr = dt.NewRow

dr("Image") = True

dr("Text") = "Image1"

dt.Rows.Add(dr)

dr = dt.NewRow

dr("Image") = False

dr("Text") = "Image2"

dt.Rows.Add(dr)

RadGrid1.DataSource = dt

End Sub

End Class

ImageViewer.aspx

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="ImageViewer.aspx.vb" Inherits="TestBed.ImageViewer" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"></telerik:RadAjaxManager>

<telerik:RadRotator ID="RadRotator1" runat="server" RenderMode="Lightweight" DataSourceID="XmlDataSource1"

Width="215px" Height="100px" ItemHeight="32px" FrameDuration="2000" ScrollDuration="2000" RotatorType="Buttons">

<ItemTemplate>

<div class="itemTemplate">

<img src="<%# XPath("SmallURL") %>" alt="" style="height: 100px; width: 100px;" onclick="SetImage('<%# XPath("LargeURL") %>');" />

</div>

</ItemTemplate>

<ControlButtons LeftButtonID="img_left" RightButtonID="img_right"></ControlButtons>

</telerik:RadRotator>

<asp:XmlDataSource ID="XmlDataSource1" runat="server"></asp:XmlDataSource>

</div>

</form>

</body>

</html>

ImageViewer.aspx.vb

Public Class ImageViewer

Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Dim image As Boolean = CBool(Me.Request.QueryString("image"))

If image Then

XmlDataSource1.Data = "<Data><DataItem><SmallURL>/Image1.jpg</SmallURL><LargeURL>/Image1.jpg</LargeURL></DataItem></Data>"

Else

XmlDataSource1.Data = "<Data><DataItem><SmallURL></SmallURL><LargeURL></LargeURL></DataItem></Data>"

End If

End Sub

End Class

Please help.

Thanks,

Rob

Rotator

answered on 28 Jun 2016