Questions on UI for WinForms Forum

2 answers

198 views

Databinding + Sorting + BindingNavigator

Hello,

I'm using a BindingNavigator and a RadGridView on the same Form with the same BindingSource.

If I change the sorting in the RadGridView it has no effects on the BindingNavigator or the BindingSource sorting.
Going to the next item by clicking on the BindingNavigator will result in jumps in RadGridView

Using the original GridView with the BindingNavigator, they always have the same sorting.

I also tried to use the RadGridView.SortChanged event to set the BindingSource-sorting but the SortChangedEventArgs are always nothing.

Is there a solution or can you give me a hint how to solve this problem?

Thanks
Christian

GridView

answered on 02 Jun 2009

1 answer

110 views

Set Allowed DockState?

Is there some property that will allow me to set the states that I want to allow my DockPanel to dock with. For example, I have a window that I only want the user to be able to dock to the sides and not allow as a state of document or floating.

Thanks in advance.

Lee

Dock

answered on 01 Jun 2009

1 answer

204 views

Chart Refresh Issue

Hi.

I'm having a fairly frustrating problem with the chart control, that I can't get over.

I'm trying to use the same chart for different reports based on what the user chooses.

One report is using the chart by binding data to it. The other is manually populating it. The graph works in both scenarios. My problem is when I try to change the X-Axis label.

Let's take this scenario. First, I generate a databound graph. Let's say it comes back with 4 bars on the X-Axis. It looks fine and works fine.

Then I generate a report which uses the graph without databinding. Let's say it needs to display 8 bars. Now if I set:

rdChart.PlotArea.XAxis.AutoScale =

True

Then the graph works fine, but the x-axis item labels are marked 1,2,3,4..., which I need to change.

So I added a loop to change the X-Axis labels:

Dim labels() As String = lbls.Split(",")

For i = 0 To rdChart.PlotArea.XAxis.Items.Count - 1

rdChart.PlotArea.XAxis(i).TextBlock.Text = labels(i)

rdChart.PlotArea.XAxis.AutoScale =

False

before doing the loop.

Now that's where the problem is. If I set AutoScale to false, the Chart stops populating the X-Axis items correctly. So for example, if the the databound chart had returned 4 bars on X-Axis, then it stays at 4, even though if the new series is supposed to have 8 bars.

I have tried many different combinations of

rdChart.Series.Clear()

rdChart.Series.ClearItems()

rdChart.PlotArea.XAxis.ClearDataBoundState()
rdChart.Update()

rdChart.UpdateGraphics()

rdChart.Refresh()

and then setting the AutoScale to true, and then setting it back to false, but nothing seems to clear up the X-Axis display correctly. The number of X-Axis items displayed is not refreshing if I trun AutoScale off, and I can't set the X-Axis item labels if it's on. HELP!

Chart (obsolete as of Q1 2013)

answered on 01 Jun 2009

3 answers

183 views

RadMessageBox not centered with user control

Hi,

I'm testing the RadMessageBox and each time I'm calling the show method, the message is appering in the upper left corner of the screen. Reading the help it seems to be centered only for winforms, but is saying nothing about using it in a user control dll development.

Do you have any idea about how can I solve this problem?

Thanks & regards

Julio

MessageBox

answered on 01 Jun 2009

1 answer

109 views

PDF Renderer

Does Telerik provide anything that can render PDF documents inside a win forms application?

General Discussions

answered on 01 Jun 2009

1 answer

83 views

Themes and Color Blend

I have found it difficult to use Themes in general and the Color Blend facility in particular because there is no documentation to support them.

What would be really useful is:

Detailed samples showing every control under all available themes.
For each Theme a list of the main colours used and what they are used for. This would help use Color Blend to replace these in our own applications

This should be in the documentation or on the website and not just a few snippets in the Forum or Blogs when somebody asks a question.

I apologise if this alreadty exists but I have hunted for it many times and not found it.

Mike

Documentation

answered on 01 Jun 2009

1 answer

102 views

Date picker is Delocating from its position

Hi,
When i click on the date control to change the date and if i don't select the date and click outside other than calendar, it remains in its position. Even if i click on the Arrow button to close it the calendar dislocates itself to some other postion. This gives a very weird behaviour to the dataTime picker.
Please can you tell me why is this happening or am i missing some property settings for it.

Calendar, DateTimePicker, TimePicker and Clock

answered on 01 Jun 2009

1 answer

121 views

Context menu / databound radhostitem fun

Hi there,

I've been using your product in trial extensively and we're just about to purchase it, and it's been a great pleasure to use, with excellent forums covering 90% of what I've wanted to try and do so far.

I'm currently stuck on something that I just can't get to work.

I'm trying to provide certain database bound historical information in a right-click context menu (/panel).

The consist of another datagrid of information, and depends on the row being right-clicked.

I have implemented a RadGridView with a custom context menu event handler

rgvRatings_ContextMenuOpening

which:

-Opens a manual connection to my database and executes a stored procedure returning certain drill down information contextually on the row I'm looking at.

-Sets the DataSource of a RadGridView to point at my newly acquired data

-Creates a RadDropDownMenu;

-Creates a new RadHostItem to host the "History" RadGridView, and then finally

-Sets the ContextMenu to be this newly created RadDropDownMenu

-Sets appropriate MinimumSize fields so that the hosted item is properly sized and visible.

This actually works the first time I right click on something, but only the first time.

After that, the context menu that appears always contains the same data, no matter if I clear it.

There are some questions surrounding this:-

-How can I update the datasource of a RadHostItem's hosted control (I tried using RadControlHostItem, a derived class that basically exposes the "HostedControl" as a Control on the RadHostItem)

-Is creating the HistoryGrid at design time as I've done a bad idea ? I ask because I found programmatically instantiating a RadGridView very awkward and it never quite worked as expected.

-What happens to the control "x" when you instantiate a RadHostItem(x)? I ask because the grid does disappear, even when I tried to instantiate the RadHostItem pointing at a copy of the grid, rather than the grid itself (I admit I'm extremely new to C# so this may be because I don't know how to clone an existing object...)

-Having "surfed" the object "e.ContextMenu" at runtime in debug mode, it seemed to have the RadHostItem with grid inside and the grid showing a datasource that had the right data in it.. (may be going mad), could there be some form of contextmenu caching that has caught me out or is this a red herring?

I realise this is quite an involved question, but it is causing quite a headache, so any pointers or hints would be most welcome!

I'm also open to suggestions like "Have you thought of using this completely different component and approach to achieve a similar result" type of thing!

Regards,

Mike Renwick

GridView

answered on 29 May 2009

14 answers

854 views

Sort using hidden column

I am attempting to use grid sorting by clicking on a column heading. This works as expected but I need to sort on a different hidden column when the user clicks a visible column.

RegNumber is the visible column.
RegKEY is a hidden column that I need to sort the grid by if the user clicks the heading on RegNumber.

I guess I need to trap the column heading click event and override the sort in some way by replacing the sort expression. I found some info suggesting I use the SortChanging event but I don't seem to be able to get this to work.

I have tried changing the sort field name without success and adding an expression to the MasterGridViewTemplate.

Any help or samples would be appreciated.

Declan

GridView

answered on 29 May 2009

1 answer

57 views

AutoDetectmdiChildForms Leave Event error

Hi,

Ive run into a problem where in an mdi application using the docking manager to auto detect the child forms, when you switch between forms, the leave event is fired by the form that fired the enter event, instead of the form that was previously visible.

Ive tested this with a basic mdi form setup using just .net controls and it works fine, the moment I add a DockingManager and set it to autodetectmdiChildForms the events are fired by the same form.

If you know a work around that would be great?

Cheers

Adrian

Dock

answered on 29 May 2009