Questions on UI for WPF Forum

1 answer

84 views

<ESCAPE> doesn't always exit editing - should it?

I have a grid bound to an Entity Framework-based CollectionViewSource.

For the sake of this example, my columns (left->right) are:

Name - in the database this is required, unique, and non-Null
Serial # - a string

I'm getting an exception when trying to escape editing a new line

Press <click here to add new item>
Type in a name
press <TAB> to advance to serial # column and type in a serial number
press <BACKTAB> to move focus to Name column
delete everything in the Name field that you just entered
Press <ESCAPE> once

My Entity Framework code throws an exception in the Device.Name property setter because it's been passed a Null.

I was under the impression that pressing <ESCAPE> was supposed to exit editing mode and pressing it twice on a new line was supposed to discard it. That (the latter) does happen if I've entered no data in the columns or valid data. If I continue (and ignore the exception), the new row is discarded, but I'm concerned because I don't understand what's happening.

When pressing <ESCAPE>, neither the row or cell validation methods are called, which makes sense.

Why is the RadGridView attempting to update the underlying data when it's about to be discarded?

GridView

answered on 04 Nov 2011

0 answers

132 views

Maintain scroll position on treelistview page navigation

Hi,

I need to maintain scroll position (both horizontal and vertical) when moving across pages.
I tried the following code , but was unable to achieve the desired functionality.
Even after calling RestoreScrollPosition() the scrollviewer didn't change its position.

private void btnNext_Click(object sender, RoutedEventArgs e)

{

SetScrollPosition();
BindData();

RestoreScrollPosition();

}

private void SetScrollPosition()

{

GridViewScrollViewer svSummaryInfo = (GridViewScrollViewer)rtSummaryInfo.FindChildByType<GridViewScrollViewer>();

_dbVerticalOffset = svSummaryInfo.VerticalOffset;
_dbHorizontalOffset = svSummaryInfo.HorizontalOffset;
}

private

void RestoreScrollPosition()

{

GridViewScrollViewer

svSummaryInfo = (GridViewScrollViewer)rtSummaryInfo.FindChildByType<GridViewScrollViewer>();

if (svSummaryInfo != null)

{

svSummaryInfo.ScrollToHorizontalOffset(_dbHorizontalOffset);

svSummaryInfo.ScrollToVerticalOffset(_dbVerticalOffset);

}
}

Please provide a code snippet for the same.

TreeListView

asked on 04 Nov 2011

4 answers

154 views

Cannot get [Display(AutoGenerateFilter = false)] to work

I'm trying to use the simple example code here: http://www.telerik.com/help/wpf/raddatafilter-features-data-annotations.html

I can't get any of the data annotations to work. Here is the code I'm using:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ComponentModel.DataAnnotations;

namespace namespace

{

public class dummy

{

[Display(AutoGenerateFilter = false)]

public string Name

{

get;

set;

}

[Display(ShortName = "Company's Name")]

public string CompanyName

{

get;

set;

}

public string Title

{

get;

set;

}

The XAML is simply <telerik:RadDataFilter Name="DataFilter" />

DataFilter

answered on 03 Nov 2011

0 answers

172 views

WPF with autoupdate (like demos click once)

Hello,
I would like to implement in my WPF application autoupdate functionality, like WPF online demos. Is it using click once??
My application will be separated in modules, and I want to each module check for newest version, download and install it automatically.
The application is goning to run in our intranet, not internet like demos.
I was seeing demos source but it's a bit complicated, I would like to see a simplest example, some links with more information!

Thanks in advance!
Alejandro

General Discussions

asked on 03 Nov 2011

0 answers

78 views

ContextMenu for ExpandAll/CollapseAll/FindIn

to delete (double post)

TreeView

asked on 03 Nov 2011

3 answers

154 views

Styling the RadTimePicker

I am styling the RadTimePicker so that it looks and feels the same as the rest of my application.
I am trying to style the DateTimePickerClock that is displayed when you want to select a time.
I cannot figure out how to change the highlight color for the Items (the times) displayed in the clock.
Right now when I hover over an item it is highlighted as Yellow but since the application's colours are black, blue and grey, this doesn't fit in with the colour scheme at all.

Thank you for your help,

-Rebecca

DateTimePicker

answered on 03 Nov 2011

2 answers

134 views

ToolTip text of HorizontalSplitter is not translated

Hello,

the ToolTip text "Start dragging in order to change items' position" is not translated in german culture.

OutlookBar_style.xaml:

...

<ToolTipService.ToolTip>

<TextBlock Text="Start dragging in order to change items' position"

telerik:LocalizationManager.ResourceKey="OutlookBarHorizontalSplitter" />

</ToolTipService.ToolTip>

...

As workaround I tried to set the ToolTip-Text by setting the HorizontalSplitterStyle like this:

...

<UserControl.Resources>

<Style x:Name="OutlookBarHorizontalSplitter" TargetType="Thumb">

<Setter Property="ToolTip" Value="My localized Text"/>

</Style>

</UserControl.Resources>

<Grid>

<telerik:RadOutlookBar x:Name="MenuOutlookBar"

HorizontalSplitterStyle="{DynamicResource OutlookBarHorizontalSplitter}">

...

Unfortuately after this the whole Style of the HorizontalSplitter is lost and the Tooltip is still default.

Please let me know if there is a solution for this issue.

Regards
Rainer

OutlookBar

answered on 03 Nov 2011

8 answers

424 views

Hide Y-Axis labels

Hi,

I have bar chart with Y-Axis having range from 0 to 100. On the same chartarea I have one more Y-Axis(right hand side) having range from -100 to 100 in the step of 50. i want to make -100, -50 label values invisible so that 0 starts in the middle of the Y-axis. I am using this Y-Axis for showing line chart. Please help me achieve this.

Chart

answered on 03 Nov 2011

1 answer

140 views

Scrollviewer reset when setting row.IsExpanded

In the treelistview row loaded event , when I am trying to expand a tree node programatically,the scrollviewer resets.

private void rtSummaryInfo_RowLoaded(object sender, RowLoadedEventArgs e)

{

TreeListViewRow

lobjTreeListViewRow = (e.Row as Telerik.Windows.Controls.TreeListView.TreeListViewRow);

SummaryData lobjSummaryData = (e.Row as Telerik.Windows.Controls.TreeListView.TreeListViewRow).DataContext as SummaryData;

if (_lstExpandedNode.Contains(lobjSummaryData.NodeName))

{

lobjTreeListViewRow.IsExpanded =

true; // at this point, scrollviewer gets resets

}

}

I need to maintain the scroll position while expanding a node. Your help is appreciated.

TreeListView

answered on 03 Nov 2011

0 answers

107 views

Autoupdate (like demos)

Hello,
I would like to implement in my WPF application autoupdate functionality, like WPF online demos. Is it using click once??
My application will be separated in modules, and I want to each module check for newest version, download and install it automatically.
The application is goning to run in our intranet, not internet like demos.
I was seeing demos source but it's a bit complicated, I would like to see a simplest example.

Thanks in advance
Alejandro

General Discussions

asked on 03 Nov 2011