Questions on UI for WPF Forum

1 answer

155 views

Hi,

I'm trying to simulate having an application that just runs from the system tray icon.

I can get the NotifyIcon to appear but if i set the main window to hidden it disappears, which makes sense as its part of that main window.

Is there any way to have the NotifyIcon visible but have the window it is part of hidden?

Cheers,

Steve.

NotifyIcon

answered on 07 Jul 2021

4 answers

244 views

Child GridView selectedItems binding Error

Hello

To use SelectedItems, "GridViewSelectionUtilities" of Telerik GridView SDK was used.

A normal gridview works just fine.
Here, the Model adds another hierarchical gridview. and run.
Multiselecting the parent gridview works fine.
But when I select the child gridview, an error appears.

An exception was thrown because the model format is different.
"Cannot be used for this generic collection."

How do I solve this?
I need to get the SelectedItmes of both the parent GridView and the child Gridview.

Thanks.

GridView

updated answer on 07 Jul 2021

8 answers

465 views

RadTreeListView poor performance

Hi,

Check out this simple scenario (zip project)
Its a RadTreeListView, bound up to an entity with a combobox to expand to each level. The performance is crap.
I'm using the lightweight metro (windows8) style, and have overridden CreateCellElement as follows.

public override FrameworkElement CreateCellElement(GridViewCell cell, object dataItem)

{

if (cell.Content != null && cell.DataContext == dataItem)

{

return (FrameworkElement)cell.Content;

}

return base.CreateCellElement(cell, dataItem);

}

Open it up, drag to fill the height of your screen, expand all items a couple of levels deep (using the combo, top left) and scroll around - it's extremely laggy. Any suggestions? In my work version a similar scenario is entirely unusable, and I'm currently forced to loop through all expanded rows and dispatch 'ExpandHierarchyItems' calls which ties up the UI for ages, just to prevent a horrendous scrolling experience (extremely slow/massive UI lockups, nodes not expanded, no children, rows at wrong level). Latest version of telerik WPF, windows 7 x64.

I'm now comparing this simple scenario with the alternatives (devexpress etc) ...

cross posted here: http://stackoverflow.com/questions/16623749/telerik-radtreelistview-poor-performance
duplicate of http://www.telerik.com/community/forums/wpf/gridview/radtreelistview-poor-performance.aspx (wrong channel)

TreeListView

answered on 06 Jul 2021

0 answers

143 views

GanttView Time Ruler Queries.

for Hi Team,

I have the following queries.

1. How to show the gridlines in the GanttView. (see the attached screenshot)

2. How to hide the border line between 2 columns. (see the attached screenshot)

3. How to reduce the MajorTickLine width. I have tried the below.
Here we are showing Days, week, month wise details.

Working Criteria:

Days - 45 to 79

Week - 80 to 120

If the range of days increased more than 79, it will automatically display the week.

Not working while adjusting the range (customized range) for days and week.

Please help us to sort it out.

Thanks,

Sabari.

GanttView

updated question on 06 Jul 2021

2 answers

159 views

RadGridView (Adding NewRow)

I want to set the focus on an embedded textbox in a GridViewDataColumn

I tried on the AddingNewDataItem event the following with no success:

var grid = e.OwnerGridViewItemsControl;
grid.CurrentColumn = grid.Columns[1];

I've tried sending keys on the RowEditEnded event. Nothing works.

GridView

answered on 06 Jul 2021

0 answers

173 views

Drawing Custom Shape and Add to ToolBox

Hi,

I was combine shapes in code. And combined shape add to toolbox.

But Drag to diagram. then, Not Available.

I want to draw custom shape. And Save to Xml.

Thanks.

Diagram

asked on 05 Jul 2021

7 answers

426 views

RadRichTextBox random app freezes when typing?

is there anyone that had experienced this? I recently updated our 2014 controls to 2021 controls.

Although I haven’t experienced it myself, our customers are experiencing an odd issue when they type with the rad rich box text editor

The app simply freezes. Our editor does extend the base radrichtextbox control and has its own style so perhaps there is some property that behaves differently now?

Paul

RichTextBox

answered on 05 Jul 2021

1 answer

199 views

Hide center connectors of shapes

Hi,

Is there a quickest way to hide center connectors of shapes? Because sometimes when you'd like to drag a shape and it ends up creating a self-connected connection. That might be annoying to the end users.

Thanks!

Diagram

answered on 02 Jul 2021

1 answer

363 views

OnSourceInitialized for RadWindow

I would like to know what's the equivalent of `OnSourceInitialized` for the `RadWindow`?

My need is to disable the WPF hardware acceleration for the windowbecause of some calls to python with CUDA causing WPF thread rendering issue.

How does one disable hardware acceleration in wpf? - Stack Overflow

Thank you, Amaury

Window

answered on 02 Jul 2021

0 answers

140 views

Chartview StepAreaSeries Fill with LinearGradientBrush

I'm trying to create a chart series with a gradient fill but for some reason the serie isn't showing on the sceen.
When i use a solidcolorbrush i have no issues but with the LinearGradientBrush it's not working.

The LinearGradientBrush is created correctly so i seems so kind of display issue?

What do i need to do to make this work? Is there any example i can check to see how this should work?

ChartView

asked on 02 Jul 2021