Questions on UI for WPF Forum

1 answer

130 views

Hi,

I am using a RadGridView control and I assign a List to ItemsSource propriety.
Now I want to modify the color of the cells of one column, depending on it content. So, if in a cell content is "X" I want to color with red, if it is "Y" I want to color with blue, ... (please see attachment)

Thanks

GridView

answered on 04 Dec 2012

1 answer

182 views

PageSize dynamically

Hi,

I have a RadDataPager which shows in order to page a RadGridView content.
The PageSize is fixed, but I would like that it changes depending on height of a RadGridView, i.e., depending of screen resolution. The height for RadGridView is defined as "Auto", so I would like that the number of items that I have in each page is the maximum number of items that can feet without it has a scroll.

Any idea?

DataPager

answered on 04 Dec 2012

2 answers

236 views

[Solved] show hide grid

hi, what's the property to hide the grid on the diagram?

thanks!

Diagram

answered on 04 Dec 2012

3 answers

298 views

Bar chart with linear axis instead of category axis

Hi, was was wondering if it was possible to have a chart with a linear axis for both the x and y axis that behaves like the bar chart in that each value is drawn as a bar/line from the axis to the value? The scatter point chart is the closest in behaviour to what I want, but instead of a single point, I need a line from the axis.

regards,
Eamon

Chart

answered on 04 Dec 2012

6 answers

1.3K+ views

[Solved] Selecting node on mouse right click

Hi,

I have a TreeView with a ContextMenu associated with it. When the context menu pops pup I need to know what is the item under the mouse pointer. However, when I check the "SelectedItem" property, it is not the item which is under the mouse pointer. I'm thinking about a way to make the item selected when right-click is used. Currently it is being selected only when a left-click is performed.

Thank you,
Ruben

TreeView

answered on 04 Dec 2012

7 answers

223 views

Tree column frustrations

I'm frustrated with the tree column for the GanttView as well as Cell templates within all columns.

I'd like to have the tree column be un-frozen, not necessarily be the first visible column, and not necessarily be bound to title.

I tried changing the MemberBinding of the TreeColumnDefinition to point to a different property but it still seems to go after the Title property. I tried adding a Cell Template similar to this:

<telerik:TreeColumnDefinition MemberBinding="{Binding WBS}" Header="WBS" ColumnWidth="60">

<telerik:TreeColumnDefinition.CellTemplate>

<DataTemplate>

<TextBlock Text="{Binding WBS}" />

</DataTemplate>

</telerik:TreeColumnDefinition.CellTemplate>

</telerik:TreeColumnDefinition>

But that binding was invalid. Not being able to access my data item from within a DataTemplate is a pretty bad thing in my opinion and a severe limitation of the control in its current form.

I don't like that the TreeColumn is frozen and leftmost and would like to be able to change this behavior. The frozen isn't as bad as the leftmost behavior.

Is there any way in the current code to have the TreeColumn point at something other than Title? How do I get at my data item from within a DataTemplate? The data context doesn't appear to be correct.

GanttView

answered on 04 Dec 2012

6 answers

236 views

AltGr+v won't display '@' with hu-HU keyboard layout

Hello,

We are using Telerik RadControls for WPF Q3 2010. We have a RadGridView in which the user can edit the data displayed. The edit control for string columns is RadMaskedTextBox.

When I want to enter a @ character with AltGr+v using Hungarian keyboard layout, it seems a 'weird' paste operation (Ctrl+v) occurs: when the clipboard contains multi-line text, new rows are inserted in the grid, when single-line, nothing happens.

Also the AltGr+c (which is a & for hu-HU) wont work. Other key combinations which I've tested works fine.

I can reproduce this issue using the RadControls for WPF Demo -> GridView -> First Look example (where the cells are editable).

Thanks,
Zoltan Tanczos

GridView

answered on 04 Dec 2012

4 answers

283 views

[Solved] DragVisual position relative to cursor

Hi,

I use an Image that is shown when dragging:

args.DragVisual = new ContentControl { Content = MyImage, Width = 25, Height = 25 };

This image always shows up at a certain position relative to the cursor.
Can I influence this position? I tried DragVisualOffset but - maybe I used it incorrect -
that didn't result in a change of position.
Thanks in advance,
Vincent

DragAndDrop

answered on 04 Dec 2012

0 answers

211 views

Nested Gridview Binding to LoadingRowDetails causing exception

Hi,

I've recently begun working on my first WPF application using Telerik's RadControls and I've run into a problem which I am unable to solve. I have a main RadGridView which has multiple levels of nested RadGridViews (3 nested gridviews in total). Each nested GridView relies on information from the parent in order to populate the columns and I do so by binding a method to the LoadingRowDetails event and pass that information to my ViewModel. When the nested gridview attempts to load the ObservableCollection, its Get method uses the retrieved information in order to execute an SQL query on the DB and populate the collection.

My problem is that for some reason when I attempt to bind a method to the 3rd nested RadGridView, instead of working as the parents do, it throws an NullReferenceException (it doesn't even reach the method) upon attempting to expand just the first row.
I've read and searched everywhere for a solution, but to no avail.

I unfortunately cannot share my actual code, since my company prohibits it, but I hope this example is clear enough to perhaps allow for a solution.

<Grid>

<telerik:RadGridView x:Name="Tools" Marin="0" LoadingRowDetails="ToolsLoadingRowDetails" ItemsSource="{Binding Tools}" IsReadOnly="True" RowHeight="45" RowIndicatorVisibility="Collapsed" AutoGenerateColumns="False" CanUserFreezeColumns="False" CanUserResizeColumns="True" ShowGroupPanel="False">

<telerik:RadGridView.Columns>

<telerik:GridViewToggleRowDetailsColumn />

<telerik:GridViewDataColumn Header="Product Id" DataMemberBinding="{Binding Path=TypeOfTool}" Width="*"/>

<telerik:GridViewDataColumn Header="Target market" DataMemberBinding="{Binding Path=TargetMarket}" Width="3*"/>

</telerik:RadGridView.Columns>

<telerik:RadGridView:RowDetailsTemplate>

<DataTemplate>

<telerik:RadGridView Marin="0" LoadingRowDetails="MoreInfoLoadingRowDetails" ItemsSource="{Binding Path=DataContext.MoreInfo, RelativeSource={RelativeSource AncestorType={x:Type telerik:RadGridView}}}" IsReadOnly="True" RowHeight="45" RowIndicatorVisibility="Collapsed" AutoGenerateColumns="False" CanUserFreezeColumns="False" CanUserResizeColumns="True" ShowGroupPanel="False">

<telerik:RadGridView.Columns>

<telerik:GridViewToggleRowDetailsColumn />

<telerik:GridViewDataColumn Header="More Info" DataMemberBinding="{Binding Path=MoreInfo}" Width="*"/>

</telerik:RadGridView.Columns>

<DataTemplate>

<telerik:RadGridView Marin="0" LoadingRowDetails="DetailedInfoLoadingRowDetails" ItemsSource=

"{Binding Path=DataContext.DetailedInfo, RelativeSource={RelativeSource AncestorType={x:Type telerik:RadGridView}, AncestorLevel=2}}"

IsReadOnly="True" RowHeight="45" RowIndicatorVisibility="Collapsed" AutoGenerateColumns="False" CanUserFreezeColumns="False" CanUserResizeColumns="True" ShowGroupPanel="False">

<telerik:RadGridView.Columns>

<telerik:GridViewToggleRowDetailsColumn />

<telerik:GridViewDataColumn Header="Detailed Info" DataMemberBinding="{Binding Path=DetailedInfo}" Width="*"/>

</telerik:RadGridView.Columns>

<DataTemplate>

<telerik:RadGridView Marin="0" LoadingRowDetails="TargetInfoLoadingRowDetails" ItemsSource=

"{Binding Path=DataContext.TargetInfo, RelativeSource={RelativeSource AncestorType={x:Type telerik:RadGridView}, AncestorLevel=3}}"

IsReadOnly="True" RowHeight="45" RowIndicatorVisibility="Collapsed" AutoGenerateColumns="False" CanUserFreezeColumns="False" CanUserResizeColumns="True" ShowGroupPanel="False">

<telerik:RadGridView.Columns>

<telerik:GridViewToggleRowDetailsColumn />

<telerik:GridViewDataColumn Header="Target Info" DataMemberBinding="{Binding Path=TargetInfo}" Width="*"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</telerik:RadGridView.RowDetailsTemplate>

</telerik:RadGridView>

</DataTemplate>

</telerik:RadGridView.RowDetailsTemplate>

</telerik:RadGridView>

</DataTemplate>

</telerik:RadGridView.RowDetailsTemplate>

</telerik:RadGridView

>



Again, I just wrote this by hand so it probably contains open/close tagging errors, but the overall idea should be understood.

The problematic event to bind to is the deepest one, in the example it is the "TargetInfo" GridView. 

The XAML works as long as I don't bind to the LoadingRowDetails event. The moment I add the binding, the code throws the NullReferenceException

open attempt to expand the first row.



I hope I've provided enough information regarding the problem.



Thanks

GridView

asked on 03 Dec 2012

6 answers

153 views

Keep first/last items as top item whenever I reached the end of the list when scrolling

HI,

Is there a way to keep either ends of the itemsource (first and last item) as top item in the caouselpanel whenever I reached the first/last item when scrolling..

Thanks,
Jog

Carousel

answered on 03 Dec 2012