or
4 answers
288 views
I am having a grid inside a grid scenario, I am going to show code for hierarchical template, which is cut to essential parts (and showing only two columns):
This grid is binded to a collection of items, which is a property on the entiy from the main grid (remember this is a grid inside hierarchical template). Each item has a property Type. Based on the type I am painting the row using RowStyleSelector. So far no problems. Now I need to have different cell style / template based on the item Type.
Item name: Speed: Output:
Item 1 50 1000 Type.A
Item 2 300 Type.B
Item 3 25 600 Type.A
As you can see, I do not want even show the value for Speed column for Type.B (currently it is showing 0). Also, Speed column is editable for TypeA items, should not be for Type.B items
What is the cleanest / best way to achieve this?
Regards,
Goran
<telerik:RadGridView.HierarchyChildTemplate> <DataTemplate> <telerik:RadGridView AutoGenerateColumns="False"
IsSynchronizedWithCurrentItem="True"
ItemsSource="{Binding Items}"
RowStyleSelector="{StaticResource CycleActivityProductRowStyleSelector}"> <telerik:RadGridView.Columns> <telerik:GridViewDataColumn DataMemberBinding="{Binding Speed}" Header="Speed" /> <telerik:GridViewDataColumn DataMemberBinding="{Binding Output}" Header="{Binding Output}" /> </telerik:RadGridView.Columns> </telerik:RadGridView> </DataTemplate></telerik:RadGridView.HierarchyChildTemplate>This grid is binded to a collection of items, which is a property on the entiy from the main grid (remember this is a grid inside hierarchical template). Each item has a property Type. Based on the type I am painting the row using RowStyleSelector. So far no problems. Now I need to have different cell style / template based on the item Type.
Item name: Speed: Output:
Item 1 50 1000 Type.A
Item 2 300 Type.B
Item 3 25 600 Type.A
As you can see, I do not want even show the value for Speed column for Type.B (currently it is showing 0). Also, Speed column is editable for TypeA items, should not be for Type.B items
What is the cleanest / best way to achieve this?
Regards,
Goran
Maya
Telerik team
answered
on
20 Aug 2012
1 answer
52 views
We have a custom lookup column that performs searches after the user has typed a few characters and paused. It is easy to do this synchronously, since it is simply a matter of overriding GetNewValueFromEditor() and returning the value. Unfortunately this doesn't provide an easy way for us to implement an asynchronous search and update of the cell. We need to allow users to perform a partial edit and then move on to
other cells while the asynchronous search/update of the previous cell
proceeds.
It's a subclass of GridViewDataColumn, so I have access to BindingTarget and DataMemberBinding. I could spawn from GetNewValueFromEditor() an async delegate that performs the lookup and uses BindingTarget and DataMemberBinding to set the value. Do you see any problems with this approach? Any suggestions on how to better address this?
It's a subclass of GridViewDataColumn, so I have access to BindingTarget and DataMemberBinding. I could spawn from GetNewValueFromEditor() an async delegate that performs the lookup and uses BindingTarget and DataMemberBinding to set the value. Do you see any problems with this approach? Any suggestions on how to better address this?
Nedyalko Nikolov
Telerik team
answered
on
20 Aug 2012
3 answers
140 views
When a row is selected using row.IsSelected = true; The selection changes in the gridview, but the row indicator does not change. Is there a way to force the row indicator to change? I do have IsSynchronizedWithCurrentItem = true.
Vlad
Telerik team
answered
on
20 Aug 2012
1 answer
124 views
Hi,
I have been trying to implement drag and drop from a treeview to a gridview using DragDropManager. It looks like I got it to working, with a drag cue created from a datatemplate defined in treeview resources in DragInitialize event fired by the treeview. What I would like to do, is to change the dragcue when the mouse enters inside the borders of the gridview, and switch it back when it leaves the gridview borders.
I went through the BugTracker demo source, and this concept has been done by creating a template, and controlling the image path and other textblocks with a binding property. Is this the only way to accomplish this? Is it possible to define two different datatemplates and select the appropriate one in the DragEnter and DragLeave event of the gridview?
Can someone please clarify? A small sample code would help a lot.
Thanks.
I have been trying to implement drag and drop from a treeview to a gridview using DragDropManager. It looks like I got it to working, with a drag cue created from a datatemplate defined in treeview resources in DragInitialize event fired by the treeview. What I would like to do, is to change the dragcue when the mouse enters inside the borders of the gridview, and switch it back when it leaves the gridview borders.
I went through the BugTracker demo source, and this concept has been done by creating a template, and controlling the image path and other textblocks with a binding property. Is this the only way to accomplish this? Is it possible to define two different datatemplates and select the appropriate one in the DragEnter and DragLeave event of the gridview?
Can someone please clarify? A small sample code would help a lot.
Thanks.
Dimitrina
Telerik team
answered
on
20 Aug 2012
1 answer
181 views
Hi,
In your MVVM binding example from the Demos you create tabs using data templates. If you add desrtructor for TabViewModel, it will not fire until application is closed, even if you call GC.Collect(). Why is this happening and what is holding the resources from being freed.
If you fo the same for the regular view, and close it, destructor for ViewModel will fire normally.
The example I am referring is called DataBinding, under TabControl.
Regards,
Goran
In your MVVM binding example from the Demos you create tabs using data templates. If you add desrtructor for TabViewModel, it will not fire until application is closed, even if you call GC.Collect(). Why is this happening and what is holding the resources from being freed.
If you fo the same for the regular view, and close it, destructor for ViewModel will fire normally.
The example I am referring is called DataBinding, under TabControl.
Regards,
Goran
Hristo
Telerik team
answered
on
17 Aug 2012
5 answers
164 views
Hi,
From your demo project I change the background but...
<pivot:QuickStyle.HeaderRow>
<pivot:ElementProperties Background="#FF683C20" BorderThickness="0 2" BorderBrush="#FF472816" />
</pivot:QuickStyle.HeaderRow>
This is dark background. Not see how to add something like a Foreground="White" to have a white color on the text over dark background?
Same for Columns, Totals, Subs... etc...
Regards,
Saykor
From your demo project I change the background but...
<pivot:QuickStyle.HeaderRow>
<pivot:ElementProperties Background="#FF683C20" BorderThickness="0 2" BorderBrush="#FF472816" />
</pivot:QuickStyle.HeaderRow>
This is dark background. Not see how to add something like a Foreground="White" to have a white color on the text over dark background?
Same for Columns, Totals, Subs... etc...
Regards,
Saykor
Rosen Vladimirov
Telerik team
answered
on
17 Aug 2012
2 answers
192 views
I have noticed a severe performance issue when adding a GridViewImageColumn to my GridView. Scrolling gets very sluggish. I'm using
DataMemberBinding="{Binding ImageUrl}"and the actual value is ../images/warning.ico. The same happens with other formats like png as well. Any suggestions on improving the performance?
1 answer
144 views
Is there a simple way to increase the width on a metro themed scrollbar?
Yoan
Telerik team
answered
on
17 Aug 2012
1 answer
115 views
I have written this simple lines of code
But i keep getting the same error, I recently installed RadControls for WPF Q2 2012 SP1, I've added the DLL's needed.
Not sure if I'm retarded, but I can't find the solution atm.
Error
Regards
Joachim
Todor
Telerik team
answered
on
17 Aug 2012
5 answers
149 views
I am using the RadGridView to display system events. As new events are observed they are added to the grid's data context. After the data context grows to a particular number of items the oldest items begin to be removed as new items are added. This creates a constantly scrolling view of the items after it reaches maximum size. The number of events occurring in the system make this view unreadable. To correct this problem the visible rows of the grid should be fixed if the scroll bar is not at position zero. Any suggestion on how I could accomplish this would be appreciated.
Thanks,
Matt
Vlad
Telerik team
answered
on
17 Aug 2012
