Questions on UI for WPF Forum

1 answer

128 views

Adding value to cell in readonly column in grid associated with dataset

FYI,

The first column of my grid is readonly. I needed to programmatically add a value to a cell in this column. This is how to do it:

<data table>.Columns[<column index>].ReadOnly = false;

<data table>.Rows[<row index>][<column index>] = <value>;

<data table>.Columns[<column index>].ReadOnly = false;

column index is 0 for me.

GridView

answered on 22 Dec 2009

1 answer

156 views

[Solved] WPF - close teleric tabItem.

Hello, I organiza my windows like tabItems in tab controls. when i click on menu item:

                            private void PaieskaTab_Click(object sender, Telerik.Windows.RadRoutedEventArgs e)         
                    {         
                        RadTabItem tabItem = new RadTabItem();         
                        ListTemplate lst = new ListTemplate();         
                        lst.tabWindow = tabItem;         
                        tabItem.Content = lst;         
                        tabItem.Header = "Paieskos langas";         
                        tabItem.Name = "tabPaieskosTestas";         
                        tabControlR.Items.Add(tabItem);         
                    }         

ListTemplate is a user control. In List template is a button "Close". Now when i click this button, i need that this tab,whitch contains this user control, would close. I try code from other forum in telerik:

                                var tabItem = tabWindow as RadTabItem;         
                     
                        var parentItemsControl = Telerik.Windows.Controls.ItemsControl.ItemsControlFromItemContainer(tabItem);         
                     
                        parentItemsControl.Items.Remove(tabItem);          

But his code shows error:

Error 23 The type or namespace name 'ItemsControl' does not exist in the namespace 'Telerik.Windows.Controls' (are you missing an assembly reference?) D:\!_Projects\Teleric_EmptyProject WPF\XSoftArt.WPFengine\XSoftArt.WPFengine\BaseClasses\ListTemplate.xaml.cs 1102 63 XSoftArt.WPFengine

Its this becouse that code is for Silverlight..?How i must change it to get working..?

TabControl

answered on 22 Dec 2009

1 answer

136 views

Hierarchy grid - expand column move

Hello

I use a hierarchy grid
not all the rows have children
in my case
the first rows dont have children
so there is now column for the expand button
when i scroll down and I see the rows taht have children
the expand column appear
but whn I scroll back' to the rows that dont have children
the columns move
I attached 3 print screens
Thanks

GridView

answered on 22 Dec 2009

1 answer

82 views

GridView - Possible to have different control type for each cell?

I am working on a project where I need a different control type (date picker, combo box, textbox) for each cell on the same column.

Example:

Attributes	Value
Name	Textbox
DOB	Date Picker
Origin	Combo Box (List of Countries)

If it is possible, any sample code would be appreciated.

Thanks.

GridView

answered on 22 Dec 2009

3 answers

125 views

System.ArgumentException

When I do this: RadGridView.ItemsSource = null;
A first chance exception of type 'System.ArgumentException' occurred.What can I do?
Message:
    "Invalid property or field - 'tip' for type: Object"
StackTrace:
   at Telerik.Windows.Data.Expressions.MemberAccessTokenExtensions.CreateMemberAccessExpression(IMemberAccessToken token, Expression instance)
   at Telerik.Windows.Data.Expressions.ExpressionFactory.MakeMemberAccess(Expression instance, String memberName)
   at Telerik.Windows.Data.Expressions.ExpressionFactory.MakeMemberAccess(Expression instance, String memberName, Boolean liftMemberAccessToNull)
   at Telerik.Windows.Data.Expressions.PropertyAccessExpressionBuilder.CreateMemberAccessExpression()
   at Telerik.Windows.Data.Expressions.MemberAccessExpressionBuilderBase.CreateLambdaExpression()
   at Telerik.Windows.Data.SortDescriptorCollectionExpressionBuilder.Sort()
   at Telerik.Windows.Data.SortDescriptorCollection.Sort(IQueryable queryable)
   at Telerik.Windows.Data.QueryableExtensions.Sort(IQueryable source, SortDescriptorCollection sortDescriptors)
   at Telerik.Windows.Data.QueryableCollectionView.CreateView()
   at Telerik.Windows.Data.QueryableCollectionView.get_QueryableView()
   at Telerik.Windows.Data.QueryableCollectionView.CreateInternalList()
   at Telerik.Windows.Data.QueryableCollectionView.EnsureInternalList()

GridView

answered on 22 Dec 2009

1 answer

443 views

ContextMenu on RadGridView

Hello,

I need a context menu on my radgrid view, but i need it to operate on the current data context of the cell (I.e. each operation on the context menu will be on the current context of the cell (or row).

I used this code:

<telerik:RadGridView.Resources>

</ContextMenu>

</telerik:RadGridView.Resources>

But i didn't know how to implement Update_Click to operate on the appropriate DataContext

Thanks,

Ofer

GridView

answered on 22 Dec 2009

4 answers

375 views

Infinity is not a valid value for the property Width

Hi Guys,

When I drag the nodes in the treeview, it displays "Infinity is not a valid value for the property Width". What caused this error?

Thanks,

TreeView

answered on 21 Dec 2009

3 answers

139 views

Simple Doc layout blocked by DocumentHost

I am trying to achieve a very simple 2 pane docking layout. I want both panes to fill the space available with a splitter between them. If I hide one pane I want the other to fill the remaining space. Here is my markup:

    
                <Grid> 
        
                    <telerik:RadDocking Name="radDocking1" > 
        
                        <telerik:RadSplitContainer Name="LeftContainer" InitialPosition="DockedLeft" > 
        
                            <telerik:RadPaneGroup> 
        
                                <telerik:RadPane Header="Task List"> 
        
                                </telerik:RadPane> 
        
                            </telerik:RadPaneGroup> 
        
                        </telerik:RadSplitContainer> 
        
                        <telerik:RadSplitContainer Name="RightContainer" InitialPosition="DockedRight"> 
        
                            <telerik:RadPaneGroup> 
        
                                <telerik:RadPane Header="Map"> 
        
                                </telerik:RadPane> 
        
                            </telerik:RadPaneGroup> 
        
                        </telerik:RadSplitContainer> 
        
                    </telerik:RadDocking> 
        
                </Grid>

What seems to be blocking this is the DocumentHost. Even when I remove the document host by following the posted instructions - using blend to grab the style sheet and setting visibility to collapsed I still can't get my 2 panes to fill the space.

Any ideas anyone?

Cheers

Steve

Docking

answered on 21 Dec 2009

2 answers

157 views

[Solved] ScrollBar DoubleClick

Hi, I have a problem, when I select a row of my RadGriView Q3 and this hase a ScrollBar, If I do Double Click in the arrow of the scrollbar, this executes the event "MousDoubleClik" of my RadGrid, I need to block this event in the scroll bar, help me

Regards!!

GridView

answered on 21 Dec 2009

18 answers

1.1K+ views

[Solved] Multiple child tables in hierachical radgridview

I managed to make RadGridView show multiple related tables (LINQ to SQL) by approach used in FirstLook sample (create GridViewTableDefinition and TableRelation). If I add two table definitions it works OK (besides showing empty table if no related record exists).

I'd like to know if there exists a way, to show each of related tables in separate tab of RadTabControl. If I define HierarchyChildTemplate/DataTemplate with RadTabControl where each tab containins GridViewDataControl, I get two tab-controls instead of one, first one showing first relation on all tabs and second tab-control showing second related table on all tabs. Is there a Way to show child-table per tab-item (or expander or something alike)?

Thanks.

Branko

GridView

answered on 21 Dec 2009