Hi,
    I just saw WPF Demo, nice work! By the way, I like the transitions when you click on navigation bar. I am new to WPF, I tried to look into code couldnt figure out how it is done. is there any way you can publish simple code here ? Do Telerik have plan to have transitions in Winforms too?

Thank you

Hi!

After upgrading to the latest release, I no longer receive updates after cells/rows have been edited.

I have attached a small example which I believe would work under last version (can't verify this since I have uninstalled it) but not under Q1.

Is there another way to hook up the events, or some other way to detect changes?

Thanks!

I've got an application that updates the display every 5 mins or so and today I received this exception after it had been running for a couple hours.  I'm not using the tool tip at all so I just thought I'd make you aware of it.  The charts being shown are all 2D (1 pie, 1 bar and 2 line charts) and don't implement any user interactive behaviour.

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Windows.Controls.Charting.BaseChartItem.get_ItemToolTipTimer()
   at Telerik.Windows.Controls.Charting.BaseChartItem.HideToolTip()
   at Telerik.Windows.Controls.Charting.BaseChartItem.BaseChartItemMouseLeave(Object sender, MouseEventArgs e)
   at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   at System.Windows.MouseOverProperty.FireNotifications(UIElement uie, ContentElement ce, UIElement3D uie3D, Boolean oldValue)
   at System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState)
   at System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState)
   at System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState)
   at System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState)
   at System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState)
   at System.Windows.ReverseInheritProperty.OnOriginValueChanged(DependencyObject oldOrigin, DependencyObject newOrigin, DeferredElementTreeState& oldTreeState)
   at System.Windows.Input.MouseDevice.ChangeMouseOver(IInputElement mouseOver, Int32 timestamp)
   at System.Windows.Input.MouseDevice.PreNotifyInput(Object sender, NotifyInputEventArgs e)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.MouseDevice.Synchronize()
   at System.Windows.Input.MouseDevice.OnHitTestInvalidatedAsync(Object sender, EventArgs e)
   at System.Windows.Input.InputManager.HitTestInvalidatedAsyncCallback(Object arg)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
 

I've got 3 charts in my app. When I don't specify a series.Definition, it works great. When I do, I find that it locks up my app if I call DataSeries.Clear() or if I try to replace a data series. I found a kludgey work-around by calling DataSeries.Reset(), then re-adding the data series, however, I'm seeing a lot of overhead with this method.

When I tried to create my DataSeries on a background thread, then call Dispatcher.BeginInvoke() to update the graph on the UI, I'm getting, "The calling thread cannot access this object because a different thread owns it." If I remove the series.Defintion and have the graph draw as a bar graph instead of a line graph, there are no problems whatsoever.

I'm supposed to be showing this at a trade show tomorrow and I'm stuck. It appears that when I specify a LineSeriesDefinition, a new thread internal to the control is introduced into the equation and it's wreaking havoc. Help!

Below is some of the code.

StartUpdatingCharts() is called from a timer:

protected void StartUpdatingCharts(object dummy)

{

    foreach (object currentGraph in ActiveGraphs)

    {

        Thread t = new Thread(UpdateChartInBackground);

        t.Start(currentGraph);

    }

}

public void UpdateChartInBackground(Object threadContext)

{

    GraphControl currentGraph = threadContext as GraphControl;

    FillChartWithData(currentGraph);

}

FillChartWithData() is called from a background thread:

protected override void FillChartWithData(GraphControl graphControl)

{

    Dictionary<string, double> returnValues = Msi.GetReservoirData(graphControl.Arguments);

    DataSeries series = new DataSeries();

    series.Definition.ShowItemLabels = false;

    LineSeriesDefinition definition = new LineSeriesDefinition();

    definition.ShowItemLabels = false;

    definition.ShowPointMarks = false;

    //series.Definition = definition;  //THIS IS THE LINE THAT CAUSES ALL OF THE PROBLEMS!

 

    foreach (string sectionName in returnValues.Keys)

    {

        series.Add(new DataPoint(returnValues[sectionName]));

    }

    ChartArea chartArea = graphControl.RadChart.DefaultView.ChartArea;

    chartArea.Dispatcher.BeginInvoke(new UpdateChart(BindDataToChart), chartArea, series);

}

 

private delegate void UpdateChart(ChartArea chartArea, DataSeries series);

private static void BindDataToChart(ChartArea chartArea, DataSeries series)

{

 

    chartArea.DataSeries.Clear();

    chartArea.DataSeries.Add(series);

}

 

 

Hello,

I would need a 3D surface graph, is it planned ?

Thanks

When you create the radgrid on the fly and view it to the user you cannot drag any of the columns to group by (it doesnt let you).

Example:

Telerik.Windows.Controls.

RadGridView grid = new Telerik.Windows.Controls.RadGridView();

 

grid.ItemsSource = e.Result;

grid.IsReadOnly =

true;

 

grid.SelectionChanged +=

new EventHandler<Telerik.Windows.Controls.SelectionChangeEventArgs>(grid_SelectionChanged);

 

grid.CanUserSortColumns =

true;

 

grid.CanUserReorderColumns =

true;

 

 

 

Telerik.Windows.Controls.

RadWindow window = new Telerik.Windows.Controls.RadWindow();

 

window.Header =

"Product Listing";

 

window.Content =

null;

 

window.Content = grid;

window.ShowDialog();

window.Closed +=

new EventHandler<Telerik.Windows.Controls.WindowClosedEventArgs>(window_Closed);

In this example the window's content contains the grid that was pieced together at runtime but the user cannot group by any of the columns.

Is this a bug or am I doing something wrong here?

Thanks

 

How can I hide the row header with the week number?

Hi,

I have a grid that i am populating Programmatically. I create the Columns and add them in code. I have changed the edit type of one of the columns to use a combo box. Everything works cool and the grid loads and the combo box on the cell is populated. The problem comes in when selecting a value in the combobox. That selected value updates not only the current cell, butt all cells of the column in the other rows.

P.S.

It seems like it updates all cell with a similar value before the change.

If anybody can help with this i would be every gratefull. I have been trying to sort this problem out for the last week. 

Below is the code in my app. 

    DataGridResults.AutoGenerateColumns = false;

            GridViewDataColumn columnID = new GridViewDataColumn();

            columnID.DataType = typeof(string);

            columnID.UniqueName = "ID";

            columnID.DataMemberPath = "ID";

            columnID.HeaderText = "ID";

            columnID.IsVisible = false;

            GridViewDataColumn columnBarcode = new GridViewDataColumn();

            columnBarcode.DataType = typeof(string);

            columnBarcode.UniqueName = "Barcode";

            columnBarcode.DataMemberPath = "Barcode";

            columnBarcode.HeaderText = "Barcode";

    GridViewDataColumn columnStatus_ID = new GridViewDataColumn();

            columnStatus_ID.DataType = typeof(string);

            columnStatus_ID.UniqueName = "Status";

            columnStatus_ID.DataMemberPath = "Status.Name";

            columnStatus_ID.HeaderText = "Status";

            columnStatus_ID.Width = new System.Windows.GridLength(200);

      DataGridResults.Columns.Add(columnID);

            DataGridResults.Columns.Add(columnBarcode);

            DataGridResults.Columns.Add(columnName);

    DataGridResults.Columns.Add(columnStatus_ID);

            //Status Combo and Column

            ComboBoxEditorSettings comboBoxEditorSettings = new ComboBoxEditorSettings();

            Granite.Objects.Status _stat = new Granite.Objects.Status();

            comboBoxEditorSettings.ItemsSource = _stat.GetAll(Granite.Objects.AppliesTo.LOCATION);

            comboBoxEditorSettings.DisplayMemberPath = "Name";

            comboBoxEditorSettings.SelectedValuePath = "Name";

            ((GridViewDataColumn)DataGridResults.Columns["Status"]).EditorSettings = comboBoxEditorSettings;

I am trying to figure out why I have a few bugs in using the WPF grid. I am open to the possibility that i have an old version of the GridView but since I did download the trail components fairly recently (within the last 4 weeks) im hoping im not too out-of-date.

Here are my three issues that need immediate attention:

Bug: Column Sorting

We have a bug that if we click to sort a column, click again to sort the other way, then click again to reset, it will break sort. Clicking after that will NOT sort anymore. It does nothing!

In your demo that we downloaded we also see this in the following sample of this bug, so we don’t think it sour code:

Populating with Data > Data Sources > Property Path

Online though, this works, so is this a bug that has been fixed and we simply need to get updated components?

Bug: Binding, then Rebinding

I have an application with a BackgroundWorker class that does some work, puts together a custom collection in a LIST<> and in the Worker completed method binds it to the grid. This works fine, but once i run the worker again, the new set of data is not visible. My original content vanishes, grid scrollbars change, but i dont see anything.

The code is VERY simple, MyGrid.Itemsource = e.Results

i've tried adding a .rebind and even setting Itemsource to NULL before assigning the new results, nothing fixes this issue.

I switched to use a LISTBOX standard .NET control instead and now things work perfectly using the same exact code.

Bug: Missing scrollbars

We have a large example that i simply am not allowed to post in full here, but it seems that for whatever reason us NOT auto generating columns and instead creating them manually is not turning on the scrollbars.

We generate the columns in code and add them to the grid.

I made sure its an issue with your control and not a XAML layout problem by putting a border around the grid that shows perfectly with right/bottom ending where I expected it to end visually, but still no scrollbars from your control that clearly has data in both directions that is not visible.

I can press keydown and go off screen!

Next Steps

For next steps and in general can you tell me how i can check if we have the latest build? Is there hot fixes we can apply?

I know we are still in "trial" mode but we need to finish this proof of concept before the work order can go ahead purchasing your control suite. Please help me fix my issues so i can help get you this sale.

Hi,
I found a bug in your chart control, mainly when I set DataSeries with only 1 element and another with many, I get errors:


It looks like you divide by zero and then try to use it in TimeSpan.FromSeconds method.


Complete stacktrace:

Regards,
Jacek Ciereszko