Questions on UI for ASP.NET AJAX Forum

2 answers

133 views

Hello,

I've sound some other discussions in the forum on not posting back with a client search, but, I'd like it to leave the drop down open. This happens if the client search function throws an error, so I feel like there should be a way to tell it to cancel and not close the results box. Here's what I have right now:

function txtAutoSearch_Search(sender, args) {

if (args.get_value() == null) {

sender._element.control._postBackOnSearch = false;

} else {

sender._element.control._postBackOnSearch = true;

}

This actually works very nicely as a way to make it so that, if they haven't selected a result, it won't post back. But, when people hit "enter", the results still close, and that confuses some folks. Is there a way to safely cancel the post and leave the box open? Basically, some line I could add after the "_postBackOnSearch = false;" bit?

Thanks,

Mike

SearchBox

answered on 12 Mar 2019

0 answers

186 views

Preventing Overlapping Events with Advanced Form

I am trying to prevent users from creating overlapping events in our calendar. I was able to implement this somewhat successfully using the demo at https://demos.telerik.com/aspnet-ajax/scheduler/examples/limitconcurrentappointments/defaultvb.aspx. I am having an issue though due to the fact that we use a customized Advanced Form template for our events. On insert or update, I can use the ExceedsLimit() function to cancel the insert or update, but the Advanced Form is cleared out and loses all of the information the user has entered. Ideally we would present the user with an error message and allow them to fix the data rather than having to enter it all over from scratch. Is this possible?

I updated the Advanced Insert and Edit Forms demo located at https://demos.telerik.com/aspnet-ajax/scheduler/examples/advancedformtemplate/defaultvb.aspx to demonstrate the issue.

DefaultVB.aspx

<%@ Page Language="vb" AutoEventWireup="true" Inherits="Scheduler.Examples.AdvancedFormTemplate.DefaultVB"

CodeFile="DefaultVB.aspx.vb" MasterPageFile="~/MasterPageCDNDisabled.master" %>

<%@ Register TagPrefix="sds" Namespace="Telerik.Web.SessionDS" %>

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

<%@ Register TagPrefix="scheduler" TagName="AdvancedForm" Src="AdvancedFormCS.ascx" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">

<link rel="Stylesheet" type="text/css" href="styles.css" />

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceholder1" runat="Server">

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

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="RadScheduler1">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadScheduler1" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" />

<telerik:RadScriptBlock runat="Server" ID="RadScriptBlock1">

<script type="text/javascript" src="scripts.js"></script>

</telerik:RadScriptBlock>

<telerik:RadNotification runat="server" ID="RadNotification1" Title="Error" TitleIcon="warning" ContentIcon="warning"

Position="Center" Width="430px" Height="200px" AutoCloseDelay="10000" ShowSound="warning" Font-Size="Large">

<NotificationMenu Visible="false"></NotificationMenu>

</telerik:RadNotification>

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

<telerik:RadScheduler RenderMode="Lightweight" runat="server" ID="RadScheduler1"

SelectedDate="2012-04-16"

OnDataBound="RadScheduler1_DataBound"

OnAppointmentCreated="RadScheduler1_AppointmentCreated"

OnAppointmentInsert="RadScheduler1_AppointmentInsert"

OnAppointmentDataBound="RadScheduler1_AppointmentDataBound"

OnClientFormCreated="schedulerFormCreated"

CustomAttributeNames="AppointmentColor"

EnableDescriptionField="true">

<AdvancedForm Modal="true" EnableTimeZonesEditing="true" />

<Reminders Enabled="true" />

<AppointmentTemplate>

<div class="rsAptSubject">

<%# Eval("Subject") %>

</div>

<%# Eval("Description") %>

</AppointmentTemplate>

<AdvancedEditTemplate>

<scheduler:AdvancedForm runat="server" ID="AdvancedEditForm1" Mode="Edit"

Subject='<%# Bind("Subject") %>'

Description='<%# Bind("Description") %>'

Start='<%# Bind("Start") %>'

End='<%# Bind("End") %>'

RecurrenceRuleText='<%# Bind("RecurrenceRule") %>'

Reminder='<%# Bind("Reminder") %>'

AppointmentColor='<%# Bind("AppointmentColor") %>'

UserID='<%# Bind("User") %>'

RoomID='<%# Bind("Room") %>'

TimeZoneID='<%# Bind("TimeZoneID") %>' />

</AdvancedEditTemplate>

<AdvancedInsertTemplate>

<scheduler:AdvancedForm runat="server" ID="AdvancedInsertForm1" Mode="Insert"

Subject='<%# Bind("Subject") %>'

Start='<%# Bind("Start") %>'

End='<%# Bind("End") %>'

Description='<%# Bind("Description") %>'

RecurrenceRuleText='<%# Bind("RecurrenceRule") %>'

Reminder='<%# Bind("Reminder") %>'

AppointmentColor='<%# Bind("AppointmentColor") %>'

UserID='<%# Bind("User") %>'

RoomID='<%# Bind("Room") %>'

TimeZoneID='<%# Bind("TimeZoneID") %>' />

</AdvancedInsertTemplate>

<TimelineView UserSelectable="false" />

<TimeSlotContextMenuSettings EnableDefault="true" />

<AppointmentContextMenuSettings EnableDefault="true" />

</telerik:RadScheduler>

</div>

</asp:Content>

DefaultVB.aspx.vb

Imports System

Imports System.Web.UI

Imports System.Drawing

Imports System.Web.UI.WebControls

Imports Telerik.Web.UI

Namespace Scheduler.Examples.AdvancedFormTemplate

Public Class DefaultVB

Inherits System.Web.UI.Page

Private Const ProviderSessionKey As String = "Telerik.Web.Examples.Scheduler.AdvancedFormTemplate.DefaultVB"

' You can safely ignore this method.

' Its purpose is to limit the changes to the underlying data only to the active user session.

Protected Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)

Dim manager As ScriptManager = RadScriptManager.GetCurrent(Page)

manager.Scripts.Add(New ScriptReference(ResolveUrl("AdvancedForm.js")))

Dim provider As XmlSchedulerProvider

If ((Session(ProviderSessionKey) Is Nothing) _

OrElse Not IsPostBack) Then

provider = New XmlSchedulerProvider(Server.MapPath("~/App_Data/Appointments_CustomTemplates.xml"), False)

Session(ProviderSessionKey) = provider

Else

provider = CType(Session(ProviderSessionKey), XmlSchedulerProvider)

End If

RadScheduler1.Provider = provider

End Sub

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

RadScheduler1.TimeZoneID = "Pacific Standard Time"

End Sub

Protected Sub RadScheduler1_DataBound(ByVal sender As Object, ByVal e As EventArgs)

RadScheduler1.ResourceTypes.FindByName("User").AllowMultipleValues = True

RadScheduler1.ResourceTypes.FindByName("Room").AllowMultipleValues = False

End Sub

Protected Sub RadScheduler1_AppointmentCreated(ByVal sender As Object, ByVal e As AppointmentCreatedEventArgs)

If e.Appointment.RecurrenceState = RecurrenceState.Master OrElse e.Appointment.RecurrenceState = RecurrenceState.Occurrence Then

Dim recurrenceStateDiv As New Label()

recurrenceStateDiv.CssClass = "rsAptRecurrence"

Dim recurrenceStateIcon As New Label()

recurrenceStateIcon.CssClass = "t-font-icon t-i-recurrence"

recurrenceStateDiv.Controls.Add(recurrenceStateIcon)

e.Container.Controls.AddAt(0, recurrenceStateDiv)

End If

If e.Appointment.RecurrenceState = RecurrenceState.Exception Then

Dim recurrenceStateDiv As New Label()

recurrenceStateDiv.CssClass = "rsAptRecurrenceException"

Dim recurrenceStateIcon As New Label()

recurrenceStateIcon.CssClass = "t-font-icon t-i-recurrence-exception"

recurrenceStateDiv.Controls.Add(recurrenceStateIcon)

e.Container.Controls.AddAt(0, recurrenceStateDiv)

End If

End Sub

Protected Sub RadScheduler1_AppointmentDataBound(ByVal sender As Object, ByVal e As SchedulerEventArgs)

Dim colorAttribute As String = e.Appointment.Attributes("AppointmentColor")

If Not String.IsNullOrEmpty(colorAttribute) Then

Dim colorValue As Integer

If Integer.TryParse(colorAttribute, colorValue) Then

Dim borderColorValue As Integer = CInt(If(colorValue < -&H7F7F7F, colorValue + &H202020, colorValue - &H202020))

e.Appointment.BackColor = Color.FromArgb(colorValue)

e.Appointment.BorderColor = Color.FromArgb(borderColorValue)

End If

e.Appointment.ToolTip = e.Appointment.Subject + ": " + e.Appointment.Description

End Sub

Protected Sub RadScheduler1_AppointmentInsert(sender As Object, e As SchedulerCancelEventArgs)

If ExceedsLimit(e.Appointment) Then

e.Cancel = True

RadNotification1.Show("Cannot add appointment! There are too many appointments in this time slot. You can only have " & AppointmentsLimit)

End If

End Sub

Private Const AppointmentsLimit As Integer = 1

Private Function ExceedsLimit(apt As Appointment) As Boolean

Dim appointmentsCount As Integer = 0

For Each existingApt As Appointment In RadScheduler1.Appointments.GetAppointmentsInRange(apt.Start, apt.[End])

If existingApt.Visible Then

appointmentsCount += 1

End If

Next

Return (appointmentsCount > AppointmentsLimit - 1)

End Function

End Class

End Namespace

Scheduler

asked on 11 Mar 2019

11 answers

649 views

Hiding Labels on Pie Chart

Hello,

A while back I was using the normal RadChart and not the HTML version. Once the HTML version came out I switched everything over to it and have been pretty happy. Recently I have come across the problem where I have too many labels on the pie chart (i.e. there are many items that are 2% or less making up the chart) which makes the chart look pretty messy.

In the normal RadChart there was a way to hide the labels on the databind event if the value of the dataitem was less than a certain percentage. However, I cannot seem to find a way to do this with the HTML chart.

Does anyone have an example how I can hide label that are less than a certain percentage on the HTML pie chart?

Thanks,.
Ron

Chart (HTML5)

answered on 11 Mar 2019

9 answers

1.1K+ views

RequiredFieldValidator not working

I had added a RequiredFieldValidator to dropdownlist that make sure user had selected value before insert to db. but the checking is not working that will not prompt error message.

<telerik:RadDropDownList ID="rdl_bu" runat="server" DataSourceID="LDS_BU" DefaultMessage="Please select..."

DataValueField="BU_ID" DataTextField="BU_name" AutoPostBack="true" >

</telerik:RadDropDownList>

<asp:RequiredFieldValidator ID="RequiredFieldValidator11" runat="server" ControlToValidate="rdl_bu"

InitialValue="Please Select..." ErrorMessage="Please select a Business Unit."></asp:RequiredFieldValidator>

DropDownList

answered on 11 Mar 2019

12 answers

611 views

RadAsyncUpload doesn't render sometimes

Hi

The upload controls (buttons) don't render sometimes. It happens a couple of times and then works after a while.
I'm using 2012.3.1308.35.
Any idea what the causes may be?

AsyncUpload

answered on 11 Mar 2019

1 answer

364 views

colour change Radgrid pagination button

Hi Team,

Can we able to change the colour of pagination button (next, prev next , prev etc..) ?

Regards,

Ramesh.

Grid

answered on 11 Mar 2019

4 answers

309 views

RadGrid Batch row mode Validation problem

When I click "add new row", required field validation raises exceptions/constraints one cell at a time. i.e. not allowing the rows data to be entered in any other order / or for the entire row to appear in edit mode.

behavior reproducible on BatchEditing demo page: http://demos.telerik.com/aspnet-ajax/grid/examples/data-editing/batch-editing/defaultcs.aspx

It seems like I would have noticed this before, so maybe it's update related: I have a RadGrid that has Batch Edit row mode enabled.

Is that intended? Can it be changed with an attribute? if not, how about some client side js? I'll be debugging, but would appreciate an available solution.

Thanks

Grid

answered on 11 Mar 2019

7 answers

314 views

Using GetEntitySqlFilterExpression to get the current filter

I have a textbox filter on a radgrid and need to get all results between two integers. So I enter "1974 2000" and use the 'between' selection to get all values between 1974 and 2000. I now need to retrieve the current filter expression in order to pass to a stored procedure. I tried using FilterExpression like so:

string EntitySQL = grid.MasterTableView.FilterExpression;

and get: "((Convert.ToInt32(iif(it[InstallationYear\"]==Convert.DBNull,null,it[\"InstallationYear\"])) >= 1974) AND ( Convert.ToInt32(iif(it[\"InstallationYear\"]==Convert.DBNull,null,it[\"InstallationYear\"])) <= 2000))"

But when I use GetEntitySqlFilterExpression like so:

string EntitySQL = grid.MasterTableView.GetEntitySqlFilterExpression();

The result is blank. For some reason GetEntitySqlFilterExpression() does not process the "between" filtering command. I'd like to use this expression because it is much easier to understand and use. Does anyone know why the "between" filtering command is not recognized?

Grid

answered on 10 Mar 2019

2 answers

193 views

filter combobox by textbox

hello

is there any way to filter the combobox by textbox using startwith and highlight all the startwith items ?

thanks

ComboBox

answered on 10 Mar 2019

0 answers

86 views

Need help deciphering file upload metadata field in form POST data

Hello,

I'm trying to upload some file programmatically from a python script thru one of our forms but I've hit a stumbling block.

When I check the Web Inspector, I see that file uploads trigger a multi-part form POST that includes the below field:

ctl00_ContentPlaceHolder1_uFile_ClientState:
{
"isEnabled":"true",
"uploadedFiles":[
{
"fileInfo":{
"FileName":"test.xlsx",
"ContentType":null,
"ContentLength":9365,
"DateJson":"2019-03-08T16:00:12.472Z",
"Index":0
},
"metaData":"long string of random gibberish"
}
]
}

And this is where I'm having difficulties. If I copy the metadata field from the web inspector, and test using the same file that I used at the time, then it works. But if I try uploading another file then it fails. And I guess that it's because I am not updating the metadata field accordingly.

So, can someone help explain to me what goes into that field? And how is it encoded?

Any insight you could share would be greatly appreciated.

Documentation and Tutorials

asked on 09 Mar 2019