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1 answer
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Is there a way to refresh the Data when the Grid Changes without setting the itemsource to null and then setting it to the list?

I find doing this resets row and column collapsing.

Or can I bind the PivotGrid directly to an ObservableCollection without using the LocalDataSourceProvider?

 

Thanks in Advance

 

 

Martin Ivanov
Telerik team
 answered on 14 Nov 2017
4 answers
368 views
Hi, 

Im working on a WPF application using the RadRibbonView. Our workflow is such that we would like the BackStage to be displayed open when the app is first launched so the user can choose to create a new project or open an existing one.

We have set 'IsBackStageOpen' to true in the XAML of the RadRibbonView, and the BackStage is displayed on load. However, it is not possible to interact with it. Clicking on a BackStageItem or anywhere closes the backstage and the users action is lost. Im not able to upload the project, however this is the XAML:

<Window x:Class="RibbonViewBackstageOpen.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"
Title="MainWindow" Height="350" Width="525">
<Grid x:Name="RootGrid">
      <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
        <RowDefinition Height="*" />
      </Grid.RowDefinitions>

<!-- Backstage defaults to Open -->
      <telerik:RadRibbonView x:Name="ribbonView"
          ApplicationName="TEST" Title="TEST" IsBackstageOpen="True" BackstageClippingElement="{Binding ElementName=RootGrid}">
        <telerik:RadRibbonTab Header="Test">
                <telerik:RadRibbonGroup Header="Test">
                    <telerik:RadRibbonButton Content="Test" />
                </telerik:RadRibbonGroup>
            </telerik:RadRibbonTab>
        <telerik:RadRibbonView.Backstage>
          <telerik:RadRibbonBackstage>
          <telerik:RadRibbonBackstageItem Header="Save" IsSelectable="True"/>
          <telerik:RadRibbonBackstageItem Header="Open" IsSelectable="True"/>
          </telerik:RadRibbonBackstage>
        </telerik:RadRibbonView.Backstage>
        </telerik:RadRibbonView>
    </Grid>
</Window>

If it is possible, what is the correct way to automatically display the backstage when an application is first run?

Thanks
Ian
David
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 answered on 13 Nov 2017
1 answer
93 views

Hello,

I followed the link to create a tooltip. Now the question is I am not sure how to place the tooltip. If I use barseries, when I hover the mouse. The tooltip is inside the bar. But I want it is just above the bar. 

Martin Ivanov
Telerik team
 answered on 13 Nov 2017
1 answer
172 views

Hi,  

I'm testing ui for WPF and one of the most important issues for me is if it is possible to  set different time units for timeline than timedate? For instance seconds or frames or any other custom  unit?

 

MK

 

Martin Ivanov
Telerik team
 answered on 13 Nov 2017
2 answers
716 views

I have a window with a TabControl that has three TabItems. This TabControl is the main control in the window, and I want to size the window based on this TabControl.

If I set SizeToContent="WidthAndHeight" on the window, the window changes size when I select a tab which has content that takes more area. I want the window to start at a fixed size based on the TabItem that will take the largest amount of space. This is not the starting tab.

A TabItem's ActualWidth is the width of the button. The content of an inactive TabItem (a grid) has an ActualWidth of 0 and a Width of NaN because it is not being displayed.

How can I set the window to a fixed size based on the content of the largest TabItem, which is not selected? This would preferably happen at Window_Loaded or Window_ContentRendered.

Nathan
Top achievements
Rank 1
 answered on 13 Nov 2017
1 answer
215 views

I've got the following radgridview control with a default sort descriptor on it:

<telerik:RadGridView x:Name="rgvMain" VerticalAlignment="Top" AutoGenerateColumns="False" CanUserResizeRows="False" CanUserInsertRows="False" CanUserSortGroups="False" ShowGroupPanel="False"
                        RowIndicatorVisibility="Collapsed" ItemsSource="{Binding CurrentActivities}" Visibility="{Binding CurrentActivitiesVisibility}">
       <telerik:RadGridView.Columns>
         <telerik:GridViewDataColumn DataMemberBinding="{Binding DateAndTimeLogged}" Header="Date Logged" UniqueName="LogDate" Width="Auto" IsReadOnly="True" />
         <telerik:GridViewDataColumn DataMemberBinding="{Binding TypeDescription}" Header="Type" UniqueName="TypeDescription" Width="Auto" IsReadOnly="True"/>
         <telerik:GridViewDataColumn DataMemberBinding="{Binding ActivityStudent.FullName}" Header="Student" UniqueName="StudentName" Width="Auto" IsReadOnly="True" />
         <telerik:GridViewDataColumn DataMemberBinding="{Binding ActivityStudent.Family.Name}" Header="Family" UniqueName="FamilyName" Width="Auto" IsReadOnly="True"/>
         <telerik:GridViewDataColumn DataMemberBinding="{Binding ActivityText}" Header="Report" UniqueName="Report" Width="Auto" IsReadOnly="True"/>
       </telerik:RadGridView.Columns>
       <telerik:RadGridView.SortDescriptors>
         <telerik:ColumnSortDescriptor Column="{Binding Columns[LogDate], ElementName=rgvMain}" SortDirection="Descending"/>
       </telerik:RadGridView.SortDescriptors>
     </telerik:RadGridView>

 

The ItemsSource is bound to:

public ObservableCollection<Activity> CurrentActivities
{
  get { return new ObservableCollection<Activity>(Utils.AllActivities.Where(x => x.LoggedUser == Utils.glbCurrentlyLoggedInUser)); }
}

 

Whenever the usercontrol is first loaded - the sortdescriptors work, but then any future loads of the usercontrol, the sortdescriptors/filters get lost - I've tried adding a Rebind to the GV on the usercontrol loaded but this doesn't make a difference.

Martin
Telerik team
 answered on 13 Nov 2017
15 answers
504 views
Hi,

We are looking for a control which we can use for searching through multiple columns in a combo box. Use case is...as user types into the combo box, the data in the combo box should be auto filtered and when user selects a row using up/down keys and press enter, current row should be selected.

I can see that Telerik has a similar control for winforms but I am wondering if we have similar control for WPF too.

In our application we uses controls from 2 different vendors, where one vendor is telerik. I will check the availability of the similar control with other vendor too. But if Terelik can provide us such a inbuild control then it will be easy for us to move to Telerik only controls in future.

Thanks,
SK
Bent
Top achievements
Rank 1
 answered on 13 Nov 2017
1 answer
131 views

Hi,

 

We started toreplace our controls by telerik ones and noticed that the combobox wasn't getting the background of the theme we are using (Office 2016). It was keeping a gray gradient background.

 

After some investigation with the XAML forTelerik.Windows.Control.Input, the style for NonEditableComboBox consists of a grid with two borders and a RadToggleButton inside of it.

 

After some investigation, I noticed that adding the following lines to the toggle fixed my problem:

Background="{TemplateBinding Background}"
Height="{TemplateBinding Height}"

(Height had to be added for the highlight border as well)

Is this a bug? Or the expected behavior is that when using a RadComboBox the developer wont be able to get the background from the theme or be able to set the height?

Thanks!

 

 

 

Martin
Telerik team
 answered on 13 Nov 2017
1 answer
180 views

Radgridview ist filled with data from database. CRUD works fine.

The RadGridview doesn`t show any changes made outside in the database.

Adding Mode=TwoWay cause readonly error of the QueryableEntityCollectionView data binding

<UserControl x:Class="ERP.AdminModule.Views.AdminMainView"
             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:i="http://schemas.microsoft.com/expression/2010/interactivity"
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
             mc:Ignorable="d"
             d:DesignHeight="300" d:DesignWidth="300"
             xmlns:prism="http://prismlibrary.com/"
             prism:ViewModelLocator.AutoWireViewModel="True">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <telerik:RadButton Content="Save" Command="{Binding Path=SubmitCommand}" CommandParameter="SubmitOrder" Margin="207,86,10,113.2"/>

        <telerik:RadGridView Name="customersGrid" GroupRenderMode="Flat"
                             Grid.Row="1"
                             Margin="0, 5, 0, 0"
                             AutoGenerateColumns="False"
                             ItemsSource="{Binding RolesView, Mode=TwoWay}"
                             IsReadOnly="False"
                             RowIndicatorVisibility="Collapsed"
                             CanUserFreezeColumns="False"
                             CanUserResizeColumns="False"
                             >
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn Header="RoleID"
                                            DataMemberBinding="{Binding RoleID}" />
                <telerik:GridViewDataColumn Header="Name"
                                            DataMemberBinding="{Binding Name}" />
                <telerik:GridViewDataColumn Header="Prio"
                                            DataMemberBinding="{Binding Prio}" />
            </telerik:RadGridView.Columns>
            <i:Interaction.Triggers>
                <i:EventTrigger EventName="RowEditEnded" >
                    <i:InvokeCommandAction Command="{Binding Path=SubmitCommand}" CommandParameter="SubmitOrder" />
                </i:EventTrigger>
            </i:Interaction.Triggers>
        </telerik:RadGridView>

    </Grid>
</UserControl>

 

using System;
using System.Collections.ObjectModel;
using System.Linq;
using Prism.Events;
using ERP.DAL;
using Prism.Mvvm;
using Telerik.Windows.Data;
using System.Windows.Input;
using Prism.Commands;
using System.Threading.Tasks;

namespace ERP.AdminModule.ViewModels
{
    class AdminMainViewModel: BindableBase
    {
        public QueryableEntityCollectionView<ACL_Roles> rolesView;
        private readonly myERPContext ctx;

        public ICommand SubmitCommand { get; private set; }

        public AdminMainViewModel(IEventAggregator eventAggregator) : base()
        {
            try
            {
                this.ctx = new myERPContext();
                this.rolesView = new QueryableEntityCollectionView<ACL_Roles>((ctx as System.Data.Entity.Infrastructure.IObjectContextAdapter).ObjectContext, "ACL_Roles");

                this.SubmitCommand = new DelegateCommand<object>(this.OnSubmit, this.CanSubmit);
            }
            catch
            {

            }

        }

        private void OnSubmit(object arg) { ctx.SaveChanges(); }
        private bool CanSubmit(object arg) { return true; }
        
        public QueryableEntityCollectionView<ACL_Roles> RolesView
        {
            get { return this.rolesView; }
        }
    }
}

Stefan
Telerik team
 answered on 13 Nov 2017
5 answers
153 views

We are showing a that represents a customers budget weeks which can start (WK 1) on any day in the year and are also not always 52 WKs/12 months.

It appears a provider is not the correct approach as the weeks are not bindable, hence the delay to get them from a means the data is not available when the provider is calling its format and interval requests.

Is this achievable?

Thanks,
Maurice

Dinko | Tech Support Engineer
Telerik team
 answered on 13 Nov 2017
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