Questions on UI for WPF Forum

7 answers

250 views

I have a chart bound to an observable collection which holds things like temperatures. The user can set the temperature units used by the program, and I need to change the chart to correspond. I'm thinking there must be a better way than iterating over all the items in the collection and converting them. Can I use a value converter (Ivalueconverter)? I can't work out how I do this so that the value converter is called for each point on the chart. Can I do this, or do you have any better suggestions, please?

Steve

Chart

answered on 10 Sep 2009

10 answers

276 views

Hide expand button on childGrid

Hello
I have hierarchy with 3 levels
father-child-subChild.
according to my data-
the father rows will always have children
but not all the child rows will have subChildRows
so I need to be able to hide the expand button in the childGrid
I saw your example of:

this

.MasterTableDefinition_PreviewDataRowCreate
but how or where can I add this method to my childGrid
Thanks!
Orit

GridView

answered on 10 Sep 2009

10 answers

76 views

Where did "ChildRecordManagers" go to ?

Hey,

using Q2 2009

I have a grid with relation based on a dataset.

I am trying to iterate over the child rows in the grid.

It seems that the "ExpandableDataRecord" does not have the
"ChildRecordManagers" property.

How I can I find the child rows ?

Thanks.

GridView

answered on 10 Sep 2009

2 answers

126 views

[Solved] XAxis with fix label distance

Hi,

I have a simple (I guessed) problem.
I use a linechart which displays datapoints with a DateTime for the XAxis.
It has between 20 and 100 datapoints. (the point distance is between 0.1 and 0.8 seconds).

All I want are labels on the XAxis which show every second a tick and an alternate view which shows all 2 seconds a tick.

I guess I do something completely wrong :)
To find the value I display the label in the format "ss.f"
I messed around with the two seconds an reached now at this point:
rcData.DefaultView.ChartArea.AxisX.Step = 0.000022890946517388024;
But still I have some "drift" - this means I get:
17.3, 19.4, 21.5...and it ends in 37.9, 40.0 instead of 39...

Since I can't imagine that it is that difficult to have a XAxis with labels for one second or 2 seconds it stop playing around and ask for a solution here; because I think what I try it totally wrong.

So the simple question:
a.) how to have a XAxis with labels every second
b.) how to have a XAxis with labels every 2 seconds

Regards

Manfred

Chart

answered on 09 Sep 2009

1 answer

169 views

How to set GridView.SelectedItem?

How to set GridView.SelectedItem in Example below?

Gridview.ItemSource is setted datatable that includes Vendors(Vendor class)

public void setSelectedItem(Vendor handledVendor)
{
GridView.SelectedItem = (object)handledVendor; //What must code be?
}

GridView

answered on 09 Sep 2009

3 answers

297 views

DateTimePicker time format

If there is not a way to do this already, I would like to request that you make the DateTimePicker control have a property where you can specify 12-hour or 24-hour based times. Thanks...

DatePicker

answered on 09 Sep 2009

2 answers

121 views

Line Color

Hi,

Since I upgraded to Q2 SP1, the treeview lines became gray. Is there a way to change the color of the lines?

Thanks,
Ruben.

TreeView

answered on 09 Sep 2009

1 answer

47 views

OnChildGridLoaded happens few times

In order to filter my child grid
I try to do the folowing
but now the OnChildGridLoaded
happens few times and I get the child grid few times

    
             private void OnChildGridLoaded(object sender, RoutedEventArgs e)  
        
                    {  
        
                            try  
        
                            {  
        
                                if (((ComboBoxValues.ComboValues)cmbActivityType.SelectedValue).Id != 0)  
        
                                {  
        
                                    dsAcoount.Tables["Budget"].DefaultView.RowFilter = "ActivityTypeID=" + ((ComboBoxValues.ComboValues)cmbActivityType.SelectedValue).Id;  
        
                                    ((RadGridView)sender).ItemsSource = null;  
        
                                    ((RadGridView)sender).ItemsSource = dsAcoount.Tables["Budget"].DefaultView;  
        
                                }  
        
            }

Thanks!
Orit

GridView

answered on 09 Sep 2009

3 answers

150 views

Exception from RadDragAndDropManager

From line 1148 in RadDragAndDropManager.cs in the source of 08/13

if (el.VisualHit != null && (el.VisualHit as UIElement).IsHitTestVisible)

System.Windows.Media.DrawingVisual doesn't inherit from UIElement, so the as returns null and we get an exception.

DragAndDrop

answered on 08 Sep 2009

1 answer

139 views

How to select multiple cells?

Hello,

I have a very simple question: I want to select multiple cells in the GridView, but I can't find the option to do it, and the SelectionMode property is not available. So far all it does is select the whole row, where I want to be able to select only a cell.
Any clue?

Thanks in advance.

GridView

answered on 08 Sep 2009