Questions on UI for ASP.NET AJAX Forum

1 answer

105 views

Can't click to set focus when in Div-mode

Hi,

When the editor is in Div-mode and set to Auto Resize height, then you can't set focus by clicking on the lower part of the editor.

Do the following in the online-demo:

http://demos.telerik.com/aspnet-ajax/editor/examples/contentareamodediv/defaultcs.aspx

Clear the content of the Editor
Set the "Auto Resize to Fit Content Height"

When this is done, you can only set focus by clicking in the top region of the editor!

Regards
Andreas

Editor

answered on 25 Aug 2016

2 answers

109 views

OnClientLoad does not fire when disabled

I can see that he OnClientLoad is not fired when Enabled="false" is set, if I change this to true its working like a charm, is this by design?

seems weird as the control should have a load event on the client either way, problem is i need to declare the editor as a variable to set the enabled state manually with JS.

var _editor;

function edtRotator_onClientLoad(editor, args) {

_editor = editor;

}

$(".rotator-images").dblclick(function () {

_editor.enableEditing(true);

_editor.set_editable(true);

});

Editor

answered on 25 Aug 2016

1 answer

698 views

FIXED the callback could not be found or did not implement ICallbackEventHandler

Been battling this error for a full day for a fully programmatically created RadGrid. Looked through so many posts that concentrate on making sure the RadGrid is created at the correct point in the page lifecycle, making sure columns and groups and created in the correct order etc etc.

I was seeing the error on entering a context header menu after the grid data had been modified at least once.

The fix.... make sure the RadGrid.ID property is set!

Hope this saves somebody else a full day of head scratching!

Grid

answered on 25 Aug 2016

1 answer

93 views

Access Tab Clicked in Grid

Hi,

I have a TabStrip inside a Template Column in a Grid. I need to count how many times one of the tabs has been clicked.

How do I attach an event to do that please?

Cheers,

Jack

Grid

answered on 25 Aug 2016

4 answers

127 views

Export to Excel does not work in IE 11

Hello Anyone,

I am using the code in this link to implement ExportToExcel - http://demos.telerik.com/aspnet-ajax/grid/examples/functionality/exporting/excel-export/defaultcs.aspx

This doesn't exports excel file in IE 11 browser. The site is also configured with https://. When i use https://, the exportToExcel works fine.

How do i handle the code to work with http://. Is there any property that i might not be setting? Or some other code that i must include for it to work? Or could it be some underlying data issue that might be causing problem?

Please suggest

thanks

Grid

answered on 24 Aug 2016

3 answers

174 views

Thumbnails not showing

I implemented the image gallery and all works properly but the thumbnails. They are not showing.

<telerik:RadImageGallery AllowPaging="true" PageSize="10" runat="server" DisplayAreaMode="Image" ID="RadImageGallery1" Height="600px" Width="900px" ImagesFolderPath="~/GalleryPics/2014 Football">

<ClientSettings>

<AnimationSettings>

<NextImagesAnimation Type="VerticalSlide" />

<PrevImagesAnimation Type="VerticalSlide" />

</AnimationSettings>

</ClientSettings>

</telerik:RadImageGallery>

ImageGallery

answered on 24 Aug 2016

3 answers

233 views

dynamic step content addhandler problem

Hi,

I have set up a small testpage to show my problem: When i Click on [Generate wizardsteps] the steps are created and [Next step] is working. When I click the [Generate wizardsteps] button again the steps are re-created, but I have to hit a [Next step] button twice in order to go to a next step. What could cause this behavior?

Here is my page code:

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="test2.aspx.vb" Inherits="test2" %>

<!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 runat="server"></telerik:RadScriptManager>

         <telerik:RadButton RenderMode="Lightweight" runat="server" ID="RadButton1" Text="Generate wizardsteps" OnClick="RadButton1_Click"></telerik:RadButton>

        <telerik:RadWizard DisplayNavigationButtons="false" OnWizardStepCreated="RadWizard1_WizardStepCreated" RenderMode="Lightweight" runat="server" ID="RadWizard1" Height="360px">

        </telerik:RadWizard>

    </div>
    </form>
</body>
</html>

and this is the code-behind:

Imports System.Collections.Generic
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports Telerik.Web.UI

Partial Public Class test2
    Inherits System.Web.UI.Page

    Protected Sub RadButton1_Click(sender As Object, e As EventArgs)

        RadWizard1.WizardSteps.Clear()

        For i As Integer = 0 To 4
            Dim [step] As New RadWizardStep()
            [step].ID = "Step " + (i + 1).ToString()
            RadWizard1.WizardSteps.Add([step])
        Next
        Dim completeStep As New RadWizardStep()
        completeStep.ID = "Complete"
        RadWizard1.WizardSteps.Add(completeStep)

        RadWizard1.ActiveStepIndex = RadWizard1.WizardSteps(0).Index

    End Sub

    Protected Sub RadWizard1_WizardStepCreated(sender As Object, e As WizardStepCreatedEventArgs)

        Dim lc As New RadButton()
        lc.Text = "Next step"
        AddHandler lc.Command, AddressOf RadButton2_Click

        e.RadWizardStep.Controls.Add(lc)

    End Sub

    Protected Sub RadButton2_Click(sender As Object, e As EventArgs)
        Dim [step] As RadWizardStep = DirectCast(DirectCast(sender, RadButton).Parent, RadWizardStep)
        RadWizard1.ActiveStepIndex = RadWizard1.WizardSteps([step].Index).Index + 1
    End Sub

End Class

I really hope you can find something.

This is an excerpt from an important project.

Thanks, Marc

Wizard

answered on 24 Aug 2016

1 answer

141 views

Unexpected disabled button behavior

Hi i used your example http://demos.telerik.com/aspnet-ajax/asyncupload/examples/persistuploadedfiles/defaultvb.aspx?show-source=true

I modified it a bit to be more simple:

TestUpload.aspx

001.<%@ Page Language="vb" CodeFile="TestUpload.aspx.vb" AutoEventWireup="true" Inherits="TestUpload" %>

002.

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

004.

005.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

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

007.<head runat="server">

008. <title>Telerik ASP.NET Example</title>

009. <style type="text/css">

010. /** Customize the demo canvas */

011. #example .demo-container {

012. padding: 28px 0;

013. width: 882px;

014. height: 330px;

015. background: transparent url("Images/background.png") top left no-repeat;

016. position: relative;

017. }

018.

019. #example .demo-container h2 {

020. margin: 0 -30px 15px;

021. padding: 25px 30px 0;

022. color: #ffffff;

023. background: #4ba2d1;

024. font-size: 36px;

025. line-height: 1;

026. }

027.

028. .demo-container h2 sup {

029. font-size: 14px;

030. line-height: 1;

031. }

032.

033.

034. .demo-container .qsf-fb {

035. padding: 30px;

036. width: 327px;

037. overflow: hidden;

038. }

039.

040. .demo-container .qsf-fb ul {

041. margin: 0;

042. padding: 0;

043. list-style-type: none;

044. }

045.

046. .demo-container .qsf-fb label {

047. width: auto;

048. display: block;

049. }

050.

051. .demo-container .qsf-fb .buttons {

052. margin-top: 13px;

053. }

054.

055.

056. .demo-container .preview {

057. width: 495px;

058. height: 331px;

059. position: absolute;

060. top: 28px;

061. left: 387px;

062. }

063.

064. /* Customize uploaded file name */

065. html .RadUpload .ruUploadProgress {

066. display: inline-block;

067. max-width: 200px;

068. overflow: hidden;

069. text-overflow: ellipsis;

070. white-space: nowrap;

071. vertical-align: top;

072. }

073.

074. html div.photo-upload {

075. font-size: 12px;

076. }

077. </style>

078.</head>

079.

080.<body>

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

082. <telerik:RadScriptManager ID="RadScriptManager1" runat="server">

083. <Scripts>

084. <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" />

085. <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" />

086. <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js" />

087. </Scripts>

088. </telerik:RadScriptManager>

089. <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />

090. <telerik:RadFormDecorator RenderMode="Lightweight" runat="server" DecoratedControls="Buttons, TextBox" />

091.

092. <div class="demo-container no-bg">

093. <div class="qsf-demo-canvas" id="qsfexWrapper">

094. <div class="qsf-fb">

095. <h2>Dream Holiday <sup>Contest</sup></h2>

096. <ul>

097. <li>

098. <label>Upload a photo of your dream holiday:</label>

099. <telerik:RadAsyncUpload RenderMode="Lightweight" CssClass="photo-upload" runat="server" ID="RadAsyncUpload1" OnClientFileUploaded="onClientFileUploaded" PostbackTriggers="RadButton1"

100. MaxFileInputsCount="1" AllowedFileExtensions=".jpg" Skin="Outlook" />

101. </li>

102. </ul>

103.

104. <p class="buttons">

105. <asp:Button runat="server" ID="RadButton1" Text="Submit your picture and information" OnClientClick="updatePictureAndInfo(); return false;" />

106. </p>

107. </div>

108.

109. <telerik:RadBinaryImage runat="server" ID="RadBinaryImage1" ImageUrl="images/blank.png"

110. Width="495" Height="331" ResizeMode="Fit" AlternateText="No picture available"

111. CssClass="preview"></telerik:RadBinaryImage>

112. </div>

113. <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">

114. <script type="text/javascript">

115. //<![CDATA[

116. Sys.Application.add_load(function () {

117. window.upload = $(".RadAsyncUpload");

118. window.button = $("#RadButton1");

119. demo.initialize();

120. });

121.

122.

123. //]]>

124. </script>

125. </telerik:RadScriptBlock>

126. <script type="text/javascript">

127. (function () {

128. var $;

129. var upload;

130. var button;

131. var demo = window.demo = window.demo || {};

132.

133. demo.initialize = function () {

134. $ = $telerik.$;

135. button = window.button;

136. upload = window.upload;

137. };

138.

139. window.onClientFileUploaded = function (sender, args) {

140. button.removeAttr('disabled');

141. };

142.

143. window.updatePictureAndInfo = function () {

144. var uploadedRows = upload.find(".ruUploadSuccess");

145. if (uploadedRows.length > 0) {

146. alert('postback');

147. __doPostBack('RadButton1', 'RadButton1Args');

148. }

149. else {

150. alert("Please select a picture/country");

151. }

152. };

153.

154.

155. })();

156. </script>

157. </div>

158.

159. </form>

160.</body>

161.</html>

And the VB.net code

01.Imports System

02.Imports System.Drawing

03.

04.Partial Class TestUpload

05. Inherits System.Web.UI.Page

06.

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

08.

09. If (Not IsPostBack) Then

10. RadButton1.Enabled = False

11. Else

12.

13. RadButton1.Enabled = True

14. End If

15.

16. End Sub

17.

18. Protected Sub FileUploaded() Handles RadAsyncUpload1.FileUploaded

19.

20. Dim bitmapImage As Bitmap = ResizeImage(RadAsyncUpload1.UploadedFiles(0).InputStream)

21. Dim stream As System.IO.MemoryStream = New System.IO.MemoryStream()

22. bitmapImage.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp)

23. RadBinaryImage1.DataValue = stream.ToArray()

24.

25. End Sub

26.

27. Protected Sub RadButton1_Click() Handles RadButton1.Click

28.

29.

30. End Sub

31.

32. Public Function ResizeImage(ByVal stream As IO.Stream) As Bitmap

33. Dim originalImage As System.Drawing.Image = Bitmap.FromStream(stream)

34.

35. Dim height As Integer = 331

36. Dim width As Integer = 495

37.

38. Dim scaledImage As New Bitmap(width, height)

39.

40. Using g As Graphics = Graphics.FromImage(scaledImage)

41. g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic

42. g.DrawImage(originalImage, 0, 0, width, height)

43. Return scaledImage

44. End Using

45.

46. End Function

47.

48.End Class

On line 99 of the aspx file you can see that the postbacktrigger is set to RadButton1. RadButton1 fires updatePictureAndInfo (line 143) I added a alert('postback') just before the __doPostBack() but this is never triggered.

Now in the VB file. If i were to change RadButton1.enabled = False to Radbutton1.enabled = True (line 10). Then press the button after uploading a JPG image the postback alert is fired but I get a server error:

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.

Any help? I need the function updatePictureAndInfo() to fire even when the submit button initially would be disabled.

Thanks

AsyncUpload

answered on 24 Aug 2016

3 answers

668 views

Telerik Grid Filter Template RadCombobox with multiple selection

Hi,

How to implement multi select dropdown with checkbox filter in rad grid column with server side binding same as shown in below demo with client side binding.

http://demos.telerik.com/aspnet-ajax/examples/functionality/filtering/basic-filtering/defaultcs.aspx

Column [Contact Title] under FILTERING WITH CLIENT-SIDE BINDING

Thank you.

Grid

answered on 24 Aug 2016

3 answers

72 views

RadGrid - canceling update due to missing value

Hello.

I have the Radgrid using a template edit form. How to cancel the on-going update, if the certain control doesn't have the appropriate value? I can reference the certain control in the template edit form and read it's new value (from within the "OnItemUpdated" event), but I don't know how to cancel the on-going update? On the update button I'am using CommandName="Update" Please advise.

Regards, E.

Grid

answered on 24 Aug 2016