Questions on UI for WPF Forum

2 answers

63 views

UI Crash with Update itemsource which was a over 6000 columns will stop UI

If my itemsource already has a very large datatable source for example with 6000+ columns and one line then update it to a small table by changing the itemsource.

private static void OnItemsSourcePropertyValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var dynamicGrid = d as DynamicGrid;
if (dynamicGrid == null)
return;
try
{
dynamicGrid.ItemsSource.Dispose();
dynamicGrid._grid.SelectedItems.Clear();
dynamicGrid._grid.SelectedItem = null;
dynamicGrid._grid.Rebind();
dynamicGrid.ItemsSource = null; stop here and no exception,code stop running
dynamicGrid.ItemsSource = e.NewValue as DataTable;
}

}

GridView

answered on 20 Jan 2016

1 answer

78 views

Does the version of Telerik WPF supports v.2014.3.1202.45 telerikQuickStart?

Slider

answered on 20 Jan 2016

3 answers

90 views

How do I style this part of the group?

The areas circled in red in the attached png. I am having a tough time finding them in the templates and styles. Any hints would be appreciated.

Paul

GridView

answered on 20 Jan 2016

3 answers

221 views

Problems with GridView

Hi, while recently my company has officially bought software from you and, thus, I suppose has a support agreement, I want to post this to a general forum. Here are the issues I encountered with GridControl:

1) Select a cell in the grid, then select an entire row and then do any Ctrl+ / Shift+ command. This causes the selection to switch to one column selection only, which spans the old cell and the newly selected row in one way or another. Also the grid loses focus. I suppose that we could catch key presses and deal with them as we wish, but this default behaviour seems very strange.

2) Cut functionality (Ctrl-X) seems to not copy anything onto the clipboard. Shouldn't Cut behave exactly the same way as Copy (except that Cut removes cells contents and Copy does not)?

3) Adding new row functionality. If you double-click on the corner cell (on the cell with the "+" sign, located to the left of the "Click here to add new item" label), the grid contents disappears completely. Then you click a number of times on that "+" cell. Then you click out of it (anywhere on any blank cell). Then you see that you get N empty rows, where N is the number of clicks you did altogether. This seems to have been intended, however, I personally think it is very confusing. Is there a way to disable this behaviour?

4) This, I believe, is a genuine bug in the control! When you Copy over the hidden cells and then Paste, you can control the Paste behaviour using SkipHiddenColumns attribute. However, if you copy cells spanning hidden cells using Ctrl key (i.e. you are copying individual cells rather than a subsequent region of cells), Paste does something very weird: it adds empty hidden cells to the selection.

Here is an example of what I mean:

- grid

columns A B C D

values-row1 1 2 3 4

values-row2 5 6 7 8

- column B is hidden

Scenario 1:

- copy 1 and 3 as a subsequent region of cells (it would be subsequent, since column B is hidden)

- paste into the beginning of row2

- if SkipHiddenColumns=false,1 and 3 are pasted instead of 5 and 6

- if SkipHiddenColumns=true,1 and 3 are pasted instead of 5 and 7

Scenario 2:

- copy 1 and 3 as two separate cells using Ctrl keyboard key

- paste into the beginning of row2

- if SkipHiddenColumns=false,1 and 3 are pasted instead of 5 and 7 (WHY???)

- if SkipHiddenColumns=true,1 and 3 are pasted instead of 5 and 8 (WHY???) -- this is the worst!

GridView

answered on 20 Jan 2016

1 answer

296 views

radgridView not show in xaml

Hi all member .I have a radgridView which not show in xaml.I use it(RadGridView) in Wpf User Control Library.I use telrik 2015 Q3 an vs 2013

xaml show below:

<telerik:RadGridView x:Name="radGridView"
          ItemsSource="{Binding Collection , Mode=TwoWay}">
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Name}" Header="Name" />
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>

.please help to me .thank you

GridView

answered on 20 Jan 2016

5 answers

1.0K+ views

Grid not showing any Rows

Hi,

I use RadGridView in a MVVM WPF 4.5 application (running on windows 8 if that matters).
I use the latest internal build 2013.2.708.45 (before I use 617 with the same problem).

Everything worked fine till I added a user request (MessageBox) in the method which fills the data.
To reproduce this behavior I made simple app and had to find out that I don't even need the MessageBox to reproduce the problem.

The problem - RadGridView doesn't display any data until I "force" a redraw, either by changing the window size or by doing a change to the data.
To proof that my solution works in general I also added a WPF DataGrid - and yes this thing works as expected.

I simply created a WPF 4.5 application and changed MainWindow.xaml to

<Window

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" x:Class="RGrid.MainWindow"

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

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="2*" />

<RowDefinition Height="Auto" />

</Grid.RowDefinitions>

<telerik:RadGridView Grid.Row="0" ItemsSource="{Binding TransferModules}" SelectionMode="Extended" ShowInsertRow="false" CanUserDeleteRows="False" CanUserInsertRows="False" CanUserReorderColumns="False" ShowGroupPanel="False" AutoGenerateColumns="False" >

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="Modul" DataMemberBinding="{Binding ShortName}" Width="100" IsFilterable="False" IsReadOnly="True" />

<telerik:GridViewDataColumn Header="Beschreibung" DataMemberBinding="{Binding Description}" Width="200" IsFilterable="False" IsReadOnly="True" />

<telerik:GridViewDataColumn Header="Status" DataMemberBinding="{Binding TransferStatus}" Width="*" IsFilterable="False" IsReadOnly="True" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

<DataGrid Grid.Row="1" ItemsSource="{Binding TransferModules}" SelectionMode="Extended" CanUserDeleteRows="False" CanUserReorderColumns="False" AutoGenerateColumns="False" >

<DataGrid.Columns>

<DataGridTextColumn Header="Modul" Binding="{Binding ShortName}" Width="100" IsReadOnly="True" />

<DataGridTextColumn Header="Beschreibung" Binding="{Binding Description}" Width="200" IsReadOnly="True" />

<DataGridTextColumn Header="Status" Binding="{Binding TransferStatus}" Width="*" IsReadOnly="True" />

</DataGrid.Columns>

</DataGrid>

<Button Grid.Row="2" Click="Button_Click" Content="Add item" HorizontalAlignment="Left" VerticalAlignment="Center" />

</Grid>

</Window>

In code behind I have

using System;

using System.Collections.Generic;

using System.Collections.ObjectModel;

using System.Linq;

using System.Windows;

namespace RGrid {

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window {

public class TM {

public String ShortName { get; set; }

public string Description { get; set; }

public string TransferStatus { get; set; }

}

public ObservableCollection<TM> TransferModules { get; set; }

private List<TM> _TModules;

public MainWindow() {

_TModules = new List<TM>();

for (int nX = 0; nX < 5; nX++) {

_TModules.Add(new TM { Description = "Des " + nX.ToString(), ShortName = "SN" + nX.ToString(), TransferStatus = "OK" });

}

//comment the following line to see if it fail without messagebox too

_TModules[1].TransferStatus = "ERROR";

TransferModules = new ObservableCollection<TM>();

InitializeComponent();

Loaded += MainWindow_Loaded;

DataContext = this;

}

void MainWindow_Loaded(object sender, RoutedEventArgs e) {

foreach (TM tM in _TModules) {

if (tM.TransferStatus != "OK") {

if (MessageBox.Show("Data not OK." + Environment.NewLine + "Add anyways?", "Please confirm", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No) != MessageBoxResult.Yes) {

continue;

}

TransferModules.Add(tM);

}

private void Button_Click(object sender, RoutedEventArgs e) {

TransferModules.Add(new TM { Description = "Des ", ShortName = "SN", TransferStatus = "OK" });

}

When I start the application the RadGridView shows no rows.
If I add a new row (with the button at the bottom) the data shows up as expected. The same happens if I change the window size.

Manfred

GridView

answered on 20 Jan 2016

12 answers

1.7K+ views

Event for Render Complete

Does the RadCartesianChart object emit any events, or have any properties that can be polled to determine if all data has been rendered?

ChartView

answered on 20 Jan 2016

1 answer

59 views

How to put RadRibbonView.ApplicationMenu on top of other content?

Hi,

I have a RadRibbonView and RadRibbonView.ApplicationMenu within it. But when I click the ApplicationMenu, some part of it is hidden below other UI. So my question is how can I bring it on top of the window?

Please check the attached screenshot.

Thanks

Wei

RibbonView and RibbonWindow

answered on 20 Jan 2016

11 answers

1.0K+ views

DateTime filtering date only with custom format

Hi,

I have DateTime columns in my gridview.
I will see the full date and time values with a custom format string yyyy-MM-dd HH:mm:ss.

But I only want to filter for the date only, so I set the FilterMemberPath to the date value.

<telerik:GridViewDataColumn Header="Start-Date"
                            IsCustomSortingEnabled="False"
                            DataMemberBinding="{Binding StartTime}"
                            FilterMemberPath="StartTime.Value.Date"
                            DataFormatString="{} {0:yyyy-MM-dd HH:mm:ss}" />

I'm now able to filter for a specific date with equal to,

but in the selection list of containing entries the dates will be displayed with 12:00:00 AM time :-(

How could I change the format of the filter string to yyyy-MM-dd?

Many thanks for all help.

Cheers,

Thomas

GridView