Questions on UI for WPF Forum

3 answers

147 views

GridViewComboBoxColumn: howto check ItemsSource Property

Hi there,
I have a GridViewComboBoxColumn in a nested hierarchical GridView, but somehow I can't set ItemsSource, DataMemberBinding and SelectedValueMemberPath properly from XAML. So, is there a simple way to find out, which ItemsSource is really set in the nested Grid at runtime, in order to fix the other props?
btw, my error looks like

BindingExpression path error: 'Name' property not found on 'object' ''Char' (HashCode=5177423)'. BindingExpression:Path=Name; DataItem='Char'

Cheers,
Hermann

GridView

answered on 15 Jul 2011

5 answers

284 views

What should be the width for column of RadGridView ?

I am using wpf 4.0 and telerik (3rd party tool) in my application and in which using grid of telerik.Now in my application there is a requirement that if the screen resolution gets bigger than 1024*768 then the columns width should increase.So i gave column width as star (*).

But in case of more than 20 columns in one grid................all the columns get collapsed with each other and though I have done the ScrollBar visibility as auto...............I dont see the scroll bar.So kindly tell me what should be the correct way to define width for the column.

GridView

answered on 15 Jul 2011

2 answers

73 views

Data Binding Problem

I want to binding SumFunction with a textblock. But I don`t how to do it. Here is my XMAL Code:

telerik:GridViewDataColumn Header="Amount" UniqueName="Amount" DataMemberBinding="{Binding Amount}">
<telerik:GridViewDataColumn.AggregateFunctions>
<telerik:SumFunction x:Name="MyTotal" Caption="Sum:" SourceField="Amount" />
</telerik:GridViewDataColumn.AggregateFunctions>
</telerik:GridViewDataColumn>

<TextBlock Height="23" HorizontalAlignment="Right" Margin="0,28,98.377,0" x:Name="textBlock1" Text="{Binding "Need something to do", ElementName=radGridView1}" VerticalAlignment="Top" TextInput="textBlock1_TextInput" Width="79" d:LayoutOverrides="VerticalAlignment" />

thank`s for Help

GridView

answered on 14 Jul 2011

13 answers

327 views

[Solved] RadTreeListView.ScrollIntoView doesn't works

Hi,

I faced with a problem that RadTreeListView.ScrollIntoView() doesn't works at all.

I need your support or workaround if so exist asap.

Thank you in advance,
Julian

TreeListView

answered on 14 Jul 2011

1 answer

205 views

RadTreeView with IsTriStateMode

Hi, I'm using the RadTreeView, binding it t to a list of objects, which have a IsChecked property and binding it using the item container style.

But i trying to get this approach:
- If I choose children, the parent is marked using the IsTriStateMode in true) and the event Checked/Unchecked is fired
- If check the parent root, the children won't be marked and the event Checked isn't fired.

Any ideas of how to do this approach?
thank you

TreeView

answered on 14 Jul 2011

15 answers

304 views

Breadcrumb for WPF

Is there any timeframe on a port of the RadBreadCrumb control to WPF?

General Discussions

answered on 14 Jul 2011

1 answer

386 views

DateTimePicker shows min value in calender

Hi,
DateTimePicker shows a min value as 1/1/0001 in calender.How to default it to as todays date.
In other case, if i am not selecting any date from datepicker, datetime property holds the mindate value.How to make this as empty string.
I am using MVVM pattern,

DatePicker

answered on 14 Jul 2011

3 answers

116 views

updating the multiSelectBehvior form the view model

Hi there.

So if you reference this post, http://www.telerik.com/community/forums/wpf/gridview/add-to-selecteditems-via-behavior.aspx you will see that Maya gave us some sample code with the custom behavior that lets us manipulate the selected items of a gridview from the code behind, i.e. changing the selected items list shows up on the grid as selected. the only problem is that we are changing the list of items that the SelectedItems property is bound to inside of the view model and not on the code behind for the page so we can't say something like

//This is from the window.xaml.cs file

((MyDataContext)

this.LayoutRoot.DataContext).SelectedItems.Add(((MyDataContext)this.LayoutRoot.DataContext).Data.Where(x => x.ID == 4).First());

Any ideas on how we can make this work? I tried something like this in the view model

//This is from the view model

public

LineItem SelectedItem

{

get

{

return selectedItem;

}

set

{

selectedItem = value;

selectedItems.Clear();

var list = Data.Where(x => x.OrderId == value.OrderId);

foreach (var lineItem in list)

{

SelecedItems.Add(lineItem);

}

OnPropertyChanged("SelectedItem");

}

but that doesn't work. There is something I am missing here, some sort of notification is taking place when you say - MyRadGridView.SelecedItems.Add() that doesn't take place from the view model even thought they are the same collection of objects. If I could figure out what that is maybe I could figure out how to make this thing work.

Thanks for any help or suggestions...

GridView