Questions on UI for WPF Forum

6 answers

45 views

Index should be smaller than the current capacity

Hello there,

I just tried to use the WPF GridView control. But I ran into a very weird issue.
Repro steps:
1. Double click a cell to enter edit mode
2. You changed the cell but then dobule click a cell in another row
3. You expect that the previous row will save the change
4. But now you get the exception see the attached image.

I can't repro this every time. What I feel is that if I run this in a lowend machine (2G memory), it will occur much often than a highend machine.
Any help will be highly appreicated.
David

GridView

answered on 26 Jan 2011

2 answers

210 views

Delete A Bound Node and Refresh

I followed the example of using a self joined hierarchtical treeview using your DataItemCollection and extending my Entity to include SetOwner, Children, etc. You showed me in this post http://www.telerik.com/community/forums/wpf/treeview/persist-item-order.aspx. That all works perfectly! What I am unsure of is how to delete a bound child then. I thought if I just handled the ObservableCollection.CollectionChanged and removed the item from the underlining datasource it would update the visual tree, but it doesnt. Here is what I am doing:

private void btnDelete_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var selcontainer = treeColumns.SelectedContainer;
                WorkFlow selitem = treeColumns.SelectedItem as WorkFlow;

                _collection.Remove(selitem);
            }
          }

I also handled the CollectedChanged event:

    void _collection_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            try
            {

                if (e.Action == NotifyCollectionChangedAction.Remove)
                {
                    foreach (object geoobject in e.OldItems)
                    {
                        ctx.WorkFlows.DeleteObject((WorkFlow)geoobject);
                    }
                }

                ctx.SaveChanges();
            }
            catch (Exception ex)
            {
                Helper.SetError(ex);
            }
        }

What do I need to do to actually refresh the treeview so that the object is gone, or should I be taking another approach?

TreeView

answered on 26 Jan 2011

3 answers

187 views

Is it possible to have a context sensitive ContextMenu?

I am using the RadTreeView control and was wondering if it was possible to have a context sensitive ContextMenu. I have a tree with different types of items and I would like to have different ContextMenu content based on the type of item that was clicked. I looked at the documenation and it doesn't seem this is possible. Is it?

Thanks.

Derek

ContextMenu

answered on 26 Jan 2011

1 answer

148 views

Detecting shift/control key

I am making a virtual keyboard in xaml/cs and running into a few problems.

Shift/control. Currently I detect keys by having the user type in a textbox. Depending on the key entered into the textbox I will highlight the appropriate key and delete anything in the textbox. This runs into the problem of shift and control not actually typing a character. How might I detect shift/control?

I also have a similar problem with delete. I had an idea of defaulting the textbox to a space, so I can see the space go away and know there was a delete pressed. However the text curser keeps going to the beginning of the textbox before the space. Any method of forcing the curser to the end of the line?

General Discussions

answered on 26 Jan 2011

6 answers

293 views

Hide View button?

We're only using the DayViewDefinition in our implementation so there is only one button "Day". Is there any way to hide this button since it isn't needed?

Thanks,
Greg

ScheduleView

answered on 26 Jan 2011

1 answer

268 views

Editable Combo box?

Hi,
I have one clarification.
I am using telerik radcombo box in our latest project.here i am inserting all country values from one XML file to one rad combo box.

Every thing is fine.But the selected value is not showing on combo box. also the editable option not working.

<Window x:Class="WpfApplication7.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Title="MainWindow" Height="350" Width="525" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">

<Window.Resources>

<XmlDataProvider x:Key="XmlData" Source="CountryList.xml" XPath="CountryList"/>

</Window.Resources>

<Grid>

<telerik:RadComboBox Height="23" ItemsSource="{Binding Source={StaticResource XmlData}, XPath=./CountryName}" DisplayMemberPath="@Name" HorizontalAlignment="Left" Margin="176,88,0,0" Name="comboBox1" VerticalAlignment="Top" Width="156" IsEditable="True" />

</Grid>

</Window>

and This is my countrylist Xml file.

<?xml version="1.0" encoding="utf-8" ?>

<CountryList>

<CountryName Name="Afghanistan"/>

<CountryName Name="Akrotiri"/>

<CountryName Name="Albania"/>

<CountryName Name="Algeria"/>

<CountryName Name="American Samoa"/>

<CountryName Name="Andorra"/>

<CountryName Name="Angola"/>

<CountryName Name="Anguilla"/>

<CountryName Name="Mauritius"/>

<CountryName Name="Mayotte"/>

<CountryName Name="Mexico"/>

<CountryName Name="Micronesia"/>

<CountryName Name="Moldova"/>

<CountryName Name="Monaco"/>

<CountryName Name="Mongolia"/>

<CountryName Name="Montserrat"/>

<CountryName Name="Morocco"/>

<CountryName Name="Western Sahara"/>

<CountryName Name="Yemen"/>

<CountryName Name="Zambia"/>

<CountryName Name="Zimbabwe"/>

</CountryList>

i am setting isEditable=True;(If i want to select india mean i just put cursor on combo box then press i.that time all country name will display with first letter i.But here not working.)

I have attached the sample solution also here.

pls give me correct solution.

ComboBox

answered on 26 Jan 2011

2 answers

89 views

Help with Row Details

I'm having trouble with my row details. How do I get text in a textblock to wrap so that the user doesn't have to scroll horizontally to view the details?

My Row Details Template is as follows:

<StackPanel Margin="8,4">

<TextBlock Text="Description:" FontWeight="Bold" />

<TextBlock Text="{Binding Description}" FontStyle="Italic" TextWrapping="WrapWithOverflow" />

</StackPanel>

If the Description is longer than the current width of the grid, I get scrollbars. No matter what I set the TextWrapping attribute to. How do I wrap the text to the width of the grid?

GridView

answered on 26 Jan 2011

3 answers

641 views

Change colors for built-in themes

Hi!

In my application, I am using the built-in Summer Theme. It almost fits my requirements, however, I would need a little bit darker blue blue on RadGridViews and in general, everywhere where this blue color is used, I would like to apply a different one (dark blue) instead. (Or red instead of blue)

Is it possible without overriding the colors for each controltype one by one?

Any help or suggestion is welcome.

Thanks,
G. M.

General Discussions

answered on 26 Jan 2011

2 answers

130 views

Disable center compass indicator on DocumentHost

When dragging a pane to be docked, I'd like to disable the center compass indicator.
How can I do this?
I'm handling PreviewShowCompass, but I'm not sure how I can use this. I see TargetGroup in the PreviewShowCompassEventArgs argument, but I don't see how to use this to my advantage yet.

I'm not sure if it matters, but my DocumentHost does not contain any DocumentPanes, but rather a ContentControl whose ContentTemplate is basically a RadTileView. The tile view is only populated programmatically by me.
I don't necessary need to use a DocumentHost. I just used it for it's ability to automatically fill the space in the RadDocking.

Thanks for any help!
Buzz

Docking

answered on 26 Jan 2011

1 answer

150 views

Floating RadPane (ToolWindow)

How to prevent a floating RadPane (ToolWindow) gathering other RadPanes or rather to prevent a floating RadPane to dock to a already floating RadPane (ToolWindow), that means we don't wan't a already floating RadPane (ToolWindow) be able to contain 2 RadPanes.

Docking

answered on 26 Jan 2011