Questions on UI for WPF Forum

3 answers

147 views

Hello.

I have previously posted a post.Please refer to the link.

SpreadSheet Cell changed event infinite loop.

Spreadsheet: InvalidOperationException is thrown when attaching to CellPropertyChanged event and trying to modify the cell

I tested it after seeing it was updated and built today.

But I don't know what has changed.

Still, errors and infinite loops appear. (System.StackOverflowException: ''System.StackOverflowException' )

Thanks.

Spreadsheet

answered on 07 Apr 2021

2 answers

141 views

Using Callout with buttons baked in to RadImageEditorUI

Is there any way to assign a callout to (say) the Open Image Button of the RadImageEditorUI?

I can't seem to find any way to get a reference to a button within the RadImageEditorUI control so I can assign it to a callout.

Thanks

Callout

answered on 06 Apr 2021

3 answers

283 views

Redirect the shortcut „Ctrl+S“

Hello every body,

I am currently trying to custumize the RadSpreadsheet. My purpose is to redirect the shortcut „Ctrl+S“ to my own custum command.
I tried this

<telerik:RadSpreadsheet x:Name="radSpreadsheet" >
            <telerik:RadSpreadsheet.InputBindings>
                <KeyBinding Gesture="Ctrl+S" Command="{Binding myCommand}"/>
           </telerik:RadSpreadsheet.InputBindings>
          ……
</telerik:RadSpreadsheet>

But I am still getting the default command. Is there any way to achieve what I want?
Just to make it clear. I did the same thing with RadRichTextBox

<telerik:RadRichTextBox x:Name="radRichTextBox" >
                    <telerik:RadRichTextBox.InputBindings>
                        <KeyBinding Gesture="Ctrl+S" Command="{Binding SaveFileCommand}" />
                    </telerik:RadRichTextBox.InputBindings>
                </telerik:RadRichTextBox>
</telerik:RadRichTextBox x:Name="radRichTextBox" >

it works well.

Please help.

Best regards

Spreadsheet

answered on 06 Apr 2021

1 answer

164 views

The Alert window is sometimes not visible.

I am calling RadWindow's Alert in the following code.

Even though it transfers control to the main window of the program, it disappears if you do not click the OK button after showing it for a while.

And I can't click the confirmation button anymore.

call.cs

AlertWindow.Alert(ret.Error.UserMessage);

alertWindow.cs

public class AlertWindow

    {

public static void Alert(string msg, string header=null, ILog log = null, ContentControl contentControl=null)

{

if (header == null)

header = "title";

if (contentControl == null)

contentControl = Application.Current.Windows.Cast<Window>().FirstOrDefault(win => win.Topmost);

Telerik.Windows.Controls.RadWindow.Alert(new Telerik.Windows.Controls.DialogParameters

{

Content = msg,

Header = header,

OkButtonContent = MulBangUl.Resources.Localization.CommonResources.CmdConfirm,

Owner = contentControl

});

if (log != null)

log.Info(msg);

}

Window

answered on 05 Apr 2021

3 answers

334 views

Clicking the mouse on the image in RadImageEditor

I need coordinates where exactly I clicked the mouse on the loaded image in WPF RadImageEditor (not the coordinator of the editor but the image). Any ideas how to achieve this goal?

Andrzej

ImageEditor

answered on 05 Apr 2021

1 answer

169 views

Grid lines overwrite plot area border

How can I show all grid lines *and* always show the plot area border? For example, if my axis ranges from 5 to 35, the grid line at 35 overwrites the plot area border and border will not be shown. If set the gridlines to Inner, then sometimes the first and last grid lines will not show, depending on the axis range (obviously). Equally unfortunate is that if one set is set to Inner and one to All, the grid lines will be drawn on top of the border leading to gray pixels at the intersection (screenshot). Ideally, this could all be solved if the border was just drawn after the grid lines. Is that possible?

ChartView

answered on 05 Apr 2021

4 answers

820 views

Issues with SelectedItem

I have a listbox defined in the xaml -

<telerik:RadListBox x:Name="CartLineItems" ItemsSource="{Binding LineItems}" SelectedItem="{Binding SelectedArticle, Mode=TwoWay}"

ItemTemplate="{StaticResource ConfectioneryDataTemplate}" VerticalAlignment="Stretch"

HorizontalAlignment="Stretch" Background="LightGray">

</telerik:RadListBox>

I frequently need to clear and repopulate the ItemsSource to refresh the Listbox. (LineItems is an observable collection). When I clear the collection, the SelectedItem is also cleared (visually). When I repopulate and set the SelectedItem object with data, there is no item in the ListBox which is selected. Below is the code -

private void RefreshLineItems()

{

// Store the selected article for later use.

LineItem selectedLineItem = null;

if (SelectedArticle != null)

selectedLineItem = SelectedArticle;

// Clear all the line items.

LineItems.Clear();

// Iterate through the cart to re-populate LineItems and reset the selected article.

if (ActiveCart != null)

{

foreach (LineItem lineItem in ActiveCart.lineItems)

{

LineItems.Add(lineItem);

}

if (selectedLineItem != null)

SelectedArticle = ActiveCart.lineItems.Find(x => x.articleID == selectedLineItem.articleID);

}

How do I get the selected item to re-appear on the listbox after the ItemsSource is cleared?

Thanks.

Gopinath

ListBox

answered on 05 Apr 2021

4 answers

180 views

problem with Rad Masked Currency Input

Dear sir,

I am using the Rad Masked Currency Input control in my project. One of the requirement is to show empty content when the value is null.

Unfortunately, when I set the empty Content property to string. Empty or to null , I still see the default value in the control ( zero number).

I can see an error in the output window of problem to convert null object to value.

I have noticed that after pressing the clear button and opening again the control the content become empty.

Do you have a solution to this scenario?

Thank you,

Yafit hamilton

General Discussions

answered on 05 Apr 2021

1 answer

569 views

RadComboBox Validation

Hey everyone,

I'm currently working through some existing project, and would like to set up a RadComboBox that will complain if it doesn't have a current selection, or the current selection is an empty string. The current ComboBox is the stock WPF control, and populates itself like this:

const string sql = @"

SELECT Item AS ListItem

FROM...";

DataTable table = GetTable(...)

cbx.ItemsSource = table.DefaultView;

cbx.DisplayMemberPath = "Item";

cbx.SelectedValuePath = "Item";

I'm new to MVVM and WPF, and this doesn't seem standard. So, what I want to know is if there's a nice way to have the RadComboBox control complain about an invalid SelectedItem? Do I need to rip this apart and do data binding? If so, is there an example I can look at to get an idea?

As always, thanks for the help,

Lee

ComboBox

answered on 02 Apr 2021

5 answers

205 views

RadGridView Hierarchical 3 Levels

Hi guys,

I am currently working on a way to display data, that is structured on 3 levels.
On first level is a week, on second level a day, and on the third level a basic entry.

Based on that system I thought about the RadGridView and the Child-Relations.
My main problems now are, that I have especially on the third level way too less space in the child-table so its basically unreadable.
Is there any way to give the childtables more space?

The other problem is, that I haven't found out, how I could set different Templates for the childtables.
The HierarchyChildTemplate only works for one Child as it seems.

The reason why I not just Group by the Days and weeks is, that I later want to use Drag and Drop entries between the days.
I thought this would be more possible in a hierarchical system.

I also tested the RadPanelBar, but there I would need to create somethin like a table with frozen headers and so on manually.

Greetings,

Benedikt

GridView

answered on 01 Apr 2021