Questions on UI for WPF Forum

1 answer

412 views

Hi,

I'm rather new to the ChartView component, so bear with me.

I have a RadCartesianChart that displays runtime values (a double and a DateTime essentially) on a LineSeries and is refreshed roughly once a second. The horizontal axis is a DateTimeCategoricalAxis and the vertical axis is a LinearAxis. The application is set up so that the user can display values from the last 30 seconds, 1 minute, 5 minutes or 30 minutes. However, as far as I can see, there is no way to force the chart to display a set time span, e.g. from DateTime.Now-30 seconds to DateTime.Now. Rather, the chart renders the horizontal axis according to what's in the data.

To accommodate this, I have had to implement logic that pushes and pops values from the databound ItemsSource so that it contains roughly the amount of values that I want to plot (30 seconds, 1 minute etc). However, as there is no guarantee that values come in at a fixed interval and "on the second", this results in the horizontal axis and chart as a whole "shifting about" a bit. It's also somewhat computationally intensive.

Is there any way to archive what I'm after using the RadCartesianChart?

Best regards,
Rickard

ChartView

answered on 18 Sep 2013

3 answers

166 views

[Solved] Binding RichTextBox in Book

Helooo,

I have RadBook that contain richtextbox that I want to Bind data to,

My Book Data Template is :

<DataTemplate x:Key ="LeftPageTemplate" >

<StackPanel Margin="10" Background="Azure" >

<Viewbox Name="ViewSura" Stretch="Fill" StretchDirection="Both" FlowDirection="RightToLeft"

HorizontalAlignment="Left" Width="450" Margin="525,21,0,0" Height="600" VerticalAlignment="Top">

<RichTextBox FontSize="22" MaxWidth ="450" MaxHeight ="600" Name="richTextBox1"

Document ="{Binding FLD}" VerticalAlignment="Top"

Background="Brown" FontStretch="Condensed"

FontFamily="KFGQPC Uthmanic Script HAFS" >

<RichTextBox.Resources>

<Style TargetType="Run">

<EventSetter Event="MouseLeftButtonDown" />

</Style>

</RichTextBox.Resources>

</RichTextBox >

</Viewbox>

</StackPanel>

</DataTemplate>

In in my code Page XML File:

<Window.Resources>

<ResourceDictionary>

<ResourceDictionary.MergedDictionaries>

<ResourceDictionary Source="Dictionary1.xaml"></ResourceDictionary>

</ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

</Window.Resources>

<Grid>

<telerik:RadBook x:Name="RadBook1"

Margin="50"

LeftPageTemplate="{StaticResource LeftPageTemplate}"

RightPageTemplate="{StaticResource RightPageTemplate}" />

In in my C# code I did this:

ObservableCollection<RTBI > MyPages= new ObservableCollection<RTBI>();

for (int i = 0; i < 10; i = i + 1)

{

ReadSura rs = new ReadSura();

MyPages.Add(new RTBI()

{

FLD = rs.readsuratxt(i + 1) // This is to get the Flow document ..

});

}

RadBook1.ItemsSource = MyPages ;

}

Put I get the error for binding, please what am I doing wrong. Please see the attached image for error details.

Please Help.

Regards...

Book

answered on 18 Sep 2013

0 answers

218 views

Installing WPF HotFix -- Visual Studio Design View

The Visual Studio 2010 Design View would not load after I attempted to install a WPF hotfix.

I was able to resolve the issue this way:

Click the Visual Studio menu choice: Telerik > VS Extensions Options
Select "WPF" in the navigation tree on the left and then checked "Include Internal builds in Latest Version update and retrieval". Pressed OK to accept changes and close the dialog.
Close Visual Studio
Start Visual Studio which caused a notice of the latest internal build is available for download.
Downloaded latest internal build.
Opened my project.
Used the Telerik > Rad Controls for WPF > Upgrade Wizard to select and apply the latest internal build.

~Danny
www.BlueCanyonSoftware.com

Installer and Visual Studio Extensions

asked on 18 Sep 2013

1 answer

131 views

IsExpandable Property not retaining programatic settings

I can not get the row.IsExpandable property to keep it's setting after _RowLoaded event is done firing. This is the last event that is fired before rendering the screen and handing control over to the user. I am setting the IsExpandable property to either true or false in the _RowLoaded event. Even though I am setting the IsExpandable property to false, the toggle button is still visible. I need it to be collapsed 95% of the time. Here is my RowLoaded method:

private void fleetGrid_RowLoaded(object sender, RowLoadedEventArgs e)

{

var row = e.Row as GridViewRow;

if (row != null)

{

Record recItem = e.Row.Item as Record;

row.IsExpandable = recItem.RequiredFields.ShowToggleOnGrid;

}

I am populating the columns in this RadGridView dynamically, and I am using a GridViewToggleRowDetailsColumn along with GridViewDataColumns for the column types. I only want this toggle button to show if certain properties of the row meet certain conditions, which is what the ShowToggleOnGrid was created for. I have tried several of the online solutions -provided in the forums, but I can not get the toggle visibility I am looking for. Any help on this issue would be greatly appreciated.

GridView

answered on 18 Sep 2013

1 answer

165 views

Fixed tab while scrolling

Hi!

Is there any way to make an tab don't scroll when we have too many tabs on screen?

I want to left the first tab always visible, even when scrolling.

Something exactly like the attached image.

Thank you!

TabControl

answered on 18 Sep 2013

4 answers

191 views

Subclassing RadRibbonTab

I'm trying to subclass the RadRibbonTab as a custom UserControl to be able to use PRISM to navigate to a specific ribbon tab.

However the subclassed RibbonTab never appears in the tab bar of the ribbon. I created a sample to demonstrate the problem:

MainWindow.xaml:

<Window x:Class="RadControlsWpfApp1.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:local="clr-namespace:RadControlsWpfApp1"

Title="MainWindow" Height="350" Width="525">

<telerik:RadRibbonView>

<telerik:RadRibbonTab Header="Tab 1">

<telerik:RadRibbonGroup Header="Group 1">

<telerik:RadRibbonButton Size="Large">Button 1</telerik:RadRibbonButton>

</telerik:RadRibbonGroup>

</telerik:RadRibbonTab>

<local:UserControl1 />

</telerik:RadRibbonView>

</Window>

UserControl1.xaml:

<telerik:RadRibbonTab x:Class="RadControlsWpfApp1.UserControl1"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

mc:Ignorable="d"

d:DesignHeight="300" d:DesignWidth="300"

Header="Tab 2">

<telerik:RadRibbonGroup Header="Group 2">

<telerik:RadRibbonButton Size="Large">Button 2</telerik:RadRibbonButton>

</telerik:RadRibbonGroup>

</telerik:RadRibbonTab>

UserControl1.xaml.cs:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using Telerik.Windows.Controls;

namespace RadControlsWpfApp1

{

/// <summary>

/// Interaction logic for UserControl1.xaml

/// </summary>

public partial class UserControl1 : RadRibbonTab

{

public UserControl1()

{

InitializeComponent();

}

I'm probably missing something obvious, however I don't know what. Thanks for your help.

RibbonView and RibbonWindow

answered on 18 Sep 2013

3 answers

214 views

Validations

Hi,

I wanted to know how can i validate telerik wpf controls for some customs validations in mvvm type of architecture.
Basically i want to validate multiple controls on a button click , store the error messages of validations and display all of them in a pop-up(say sort of validation summary)

Please suggest something
Thanks in advance

Shruti

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 18 Sep 2013

1 answer

101 views

Index function support

Hi,

Is there planned to insert the Excel Index function in the future?

Spreadsheet

answered on 18 Sep 2013

2 answers

757 views

[Solved] IsTabStop doesn't work as expected?

Hi,
I'm using Telerik controls with version 2013.2.724.40, and VS 2010.
In the following code example, I'd like to use tab to navigate only between the 3 TextBoxes. IsTabStop is set to false, but the tab still stops at the RadExpander, is it an expected behavior?

Thanks.
Gong

<telerik:RadWindow x:Class="ExpanderWpfApp.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

Height="300" Width="300" >

<StackPanel>

<TextBox/>

<telerik:RadExpander IsExpanded="True" IsTabStop="False">

<TextBox/>

</telerik:RadExpander>

<TextBox/>

</StackPanel>

</telerik:RadWindow>

Expander

answered on 18 Sep 2013

4 answers

1.0K+ views

Add property definitions dynamically from code-behind

I have a situation where I would like to be able to add property definitions from code behind, however it doesn't appear to be working properly.

Here's what I have: I made a custom object for use in xaml called a PropertyDefinitionList:

public class PropertyDefinitionList : List<Telerik.Windows.Controls.Data.PropertyGrid.PropertyDefinition>

{

public PropertyDefinitionList() { }

}

In a resource dictionary I instance such a list like follows:

<local:ObjectPropertyFilterList x:Key="PropertyDefinitions" >
    <propertyGrid:PropertyDefinition Binding="{Binding Name}" />
    <propertyGrid:PropertyDefinition Binding="{Binding ID}" />
</local:ObjectPropertyFilterList>

I get a reference to this list in my code behind and call it PropertyList. At a certain 
point I want to the property definitions to the .PropertyDefinitions collection on the 
RadPropertyGrid, so in the function that does it I have the following code:

rpg1.PropertyDefinitions.AddRange(propertyDefinitionList1);
rpg1.item = targetitem;
However when the code executes I get two blank definition entries in the property grid 
display. There is no display name nor value. The properties definitely exist in the object 
being assigned to "item", but its like these property definitions don't get their binding 
set. In another thread it was stated that property definitions have their binding 
evaluated when the .item property changes, so what is happening (or not happening) here? I 
figure I must be doing something wrong.

Thanks!

PropertyGrid

answered on 18 Sep 2013