Questions on UI for WinForms Forum

5 answers

127 views

Hi,

with a workaround I could force the "MinSize" when the containing window is resized.

But now another problem comes up.
If a panel has the state "AutoHide" it ignores the MinSize totally.
So you don't need to resize the whole window.

Simply make the panel smaller.

I guess this has something to do with the "missing" splitter.
When a panel is on AutoHide it shows some kind of border instead of a splitter.
What I think is that you check for MinSize in "SplitterMove" (or somewhere around there).
BUT - in this case no "SplitterMoved" is fired.

So my workaround fails if the Panel is on AutoHide!!
I think this is a bug!

Is there another way to enforce MinSize with a workaround?
Any event that I can handle?

Regards

Manfred

Dock

answered on 12 Feb 2008

5 answers

220 views

Panel Resize / SizeChanged does not fire

Hi,

by trying to fix the problem with "ingore minsize"
http://www.telerik.com/community/forums/thread/b311D-bbthde.aspx

I found another problem.

When a panel with "AutoHide" is resized it does not fire the events
Resize / SizeChanged if the size is smaller than MinSize.

To reproduce:
Create a winform app.
Add a dockingmanager with two panels.
Set MinSize for the left panel to 200.
Add a listbox to the right panel.
Add a handler for Resize / SizeChanged for the left panel.
In the handlers add:
listbox1.Items.Add(dockingpanel1.Witdth.ToString());
Now run the app and make the left panel autohide.
Drag the panels "splitter".
Every time you release the splitter two listbox entries are generated.
Drag the panel smaller than 200 (it becomes smaller) - and no entries are generated!

Regards

Manfred

Dock

answered on 12 Feb 2008

1 answer

190 views

Display value not updating

On my Windows form, I have a RadDateTimePicker control. When I first load the form, I'm retrieving data from our database, based on the value of a .NET ComboBox control, and populating the RadDateTimePicker control from a date column in the return result set. If I then change the value in my ComboBox, which initiates a fresh hit to the database, and the date column is null, it clears the RadDateTimePicker control as I want it to.

The problem comes when I change the ComboBox back to the value it was when the form first loaded, forcing a retrieval of the original data. The RadDateTimePicker control stays empty, even though the Value property has a valid date.

If I click the drop down arrow of the RadDateTimePicker control at this point, the text suddenly fills in with the correct date. Here's the code I'm using:

    
            // Create PMA object 
        
            ProductMarketArea pma = new ProductMarketArea(); 
        
            // Retrieve product data 
        
            DataTable tbl = pma.GetRecordsByProductID(CurrentProduct.ID.Value); 
        
            // Get specific PMA data. 
        
            DataRow row = tbl.Select("MarketAreaID = " + CurrentMarketArea.MarketAreaID.ToString() + " And Expiration Is Null")[0]; 
        
            // Populate PMA object with PMA data. 
        
            pma.LoadFromDataRow(row); 
        
            _ProductMarketArea = pma; 
        
            EventHandler datesChanged = DatesChanged; 
        
            rdpStartDate.ValueChanged -= datesChanged; 
        
            rdpEndDate.ValueChanged -= datesChanged; 
        
            // rdpStartDate and rdpEndDate are the two RadDateTimePicker controls 
        
            if (pma.StartDate.HasValue) 
        
               rdpStartDate.Value = pma.StartDate.Value; 
        
            else 
        
               rdpStartDate.Value = DateTime.Now; 
        
            // PROBLEM SEEMS TO BE HERE.  END DATE STAYS VISUALLY EMPTY AFTER RECORD CHANGE 
        
            if (pma.EndDate.HasValue) 
        
               rdpEndDate.Value = pma.EndDate.Value; 
        
            else                 
        
               rdpEndDate.Value = rdpEndDate.MinDate; 
        
            rdpStartDate.ValueChanged += datesChanged; 
        
            rdpEndDate.ValueChanged += datesChanged;

Calendar, DateTimePicker, TimePicker and Clock

answered on 12 Feb 2008

3 answers

81 views

Setting ToolTipText in designer results in Errormessage

Hi,

if I set ToolTipText in RadPanelBarGroupElement it works.
This means if I run the program it shows up the tooltip.
This is new (a fix I would say) in Q3 SP1.

But when I close the form (in VS) and open it again I get the following error messsage:

---------------------------

---------------------------
Error setting property "ToolTipText" in class "Telerik.WinControls.RadItem" to value "TestTT".

The error was:
System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.

bei System.ComponentModel.ReflectPropertyDescriptor.SetValue(Object component, Object value)

bei Telerik.WinControls.Design.RadObjectCustomPropertyDescriptor.SetValue(Object component, Object value)
---------------------------
OK
---------------------------

Regards

Manfred

Dock

answered on 12 Feb 2008

1 answer

169 views

RadDropdownButton Items

Hi.
I use dropdownbutton in my application.I add items manulally with code.How can i remove a dropdownbutton item.Is there a way like FindByValue or FindByText?

Buttons, RadioButton, CheckBox, etc

answered on 11 Feb 2008

1 answer

95 views

Ending row addition

Hi

I am using a RadGridView with an empty dataset, in which the user will enter a few rows of data.

Behaviour
The user clicks on "Add new row...", enters values in some of the columns and clicks on other controls on the form. The new row is in a pending state, unless the user tabs out of it.

Behaviour
How can I programmatically "accept" the new row in the radgridview so that it gets added to the dataset?

GridView

answered on 11 Feb 2008

3 answers

254 views

RadChart Labels

If I am doing a simple bar chart, how can I place a label Middle Center inside the bar and a label at the Top of the bar...?

Chart (obsolete as of Q1 2013)

answered on 11 Feb 2008

10 answers

556 views

How can I set the BorderWidth and BorderColor on a ShapedForm?

i'm sure this is an easy one, but i can't get it to work in design or runtime.

thanks...

ShapedForm

answered on 09 Feb 2008

1 answer

113 views

Q3 SP1 ?

is it coming Q3 SP1?
I still have unresolved problems with BooleanColumn (just reported with a support ticket)...

Thanks in advance,
Emanuele Savarese

GridView

answered on 08 Feb 2008

1 answer

51 views

Q3/2007 and it will not work

Hello,

after installing the Q3/2007 version my programm doesnt work any more.
I get the following error while the main form is loading. I dont`t know why? When i put the RibbonBar in a new clear Project I don`t get an error.

Hardcopy

THX Daniel

RibbonBar

answered on 08 Feb 2008