Questions on UI for WinForms Forum

4 answers

294 views

GridViewComboBoxColumn ShowDropDown / ShowPopUp

I have a

GridViewComboBoxColumn

in a radgridview. Could someone suggest to me how I could force the combobox column to show its drop down when a row is added?

Ryan

GridView

answered on 17 Jul 2009

17 answers

273 views

Less new product - more stability

Hi,

I've noticed that there are ALOT of bugs in the RadControls for WinForms suite, release after release.

How about adding more error checking, some code comments, less hard coding and stabilizing the core features? Those would be good places to start.

Regards,

Matt

New Product Suggestions

answered on 16 Jul 2009

1 answer

207 views

Setting of height and width of image in the RadComboBoxItem

Hello all
I am using RadComboBox in a windows Form. I am adding Images for each name, but it is displaying the images in their original size. Can we resigze the Photos in the Radcombobox or not. If yes please send me the Solution ASAP
Thanks In Advance
Suresh Kharod

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 16 Jul 2009

1 answer

128 views

Exception RadTreeViewExplorer.RelationBindings

Hello,
I drag and drop a radtreeView , i added my binding sources and datasets
but "this.radTreeViewExplorer.RelationBindings" return null.

Treeview

answered on 16 Jul 2009

2 answers

223 views

Rad Form Location by Code

Hi:

I'm having trouble when I try to change my rad form location. I wrote a code to calculate the new form position by limit the x an y position to the screen boundaries. If the user try to put the form out of the boundaries, the code reasign the location to make my form fully visible. Here's my code:

private void FormPrincipal_LocationChanged(object sender, EventArgs e)
        {
            if (!movedByCode)
            {
                movedByCode = true;
                Point puntoActual = DeviceAuxiliar.ChangeLocationForm(this.Location, this.Right, this.Bottom);
                this.Location = puntoActual;

                this.Location = puntoActual;
               movedByCode = false;
            }
        }

The issues are:
1- Do I have to code Fom_LocationChanged or Form_Move?
2- When my code runs, it doesn't change the form's location. It simply does not work, but if I duplicate de line this.Location = puntoActual; it works, but with to much flickering. I'm trying to use the movedByCode flag in order to no execute twice this metod, but this does not happen neither.

Can you help me?

Thanks.

Form

answered on 16 Jul 2009

1 answer

166 views

[Solved] Dock Close/Switch Performance

Hi,

I have a docking manager with 6 DocumentPanes open. One of the DocumentPanes has a TableLayoutPanel with 100 controls on it. The DockingManager takes 4-5 seconds to switch between tabs, and 5 seconds to move from Closing to Closed on this tab. I also notice that closing the DocumentPane does not fire the Disposed events of the control on it - I have to manually fire the DocumentPanel.Dispose() method in the Closed event.

Any idea what I might be doing wrong ?

What is the typical life history of a DocumentPanel within a DockingManager ? Should I close it some other way other than the little X button ?

Thanks
Phillip

Dock

answered on 16 Jul 2009

9 answers

426 views

[Solved] Load On Demand for WinForms

Hello,
After working extensively with the controls for ASP.NET, I am new to the WinForm controls. What I am looking for is a way to enable the "load on demand" functionality that is present in the Telerik radComboBox for ASP.NET.

I have a web service that I would like to use to dynamically load data in a combobox. So when the user types in some data (like "ab", I will call the webservice to find all matching items and then display them in the combobox). This is very easy to accomplish in ASP.NET, but I have been searching the forums and struggling with this for several days.

Here is the code that I have so far. This pretty much gets me what I need, but sometimes the drop down does not display the items that were loaded from the web service (I can even step through the code and see that the .Items.Count property of the combo is greater than zero, but still no drop down).

    
                Private Sub DescriptionComboBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)  
        
                    Dim descriptionComboBoxEditor As RadComboBoxEditor = New RadComboBoxEditor  
        
                    Dim newDescription As String = Nothing 
        
                    Dim pdHelperWebService As New pdhelper.PDHelper  
        
                    Dim ds As DataSet  
        
                    Dim dt As DataTable  
        
                    Dim filter As String = Nothing 
        
                    Dim comboItem As RadComboBoxItem  
        
                    descriptionComboBoxEditor = CType(sender, RadComboBoxEditor)  
        
                    descriptionComboBoxEditor.AutoCompleteMode = AutoCompleteMode.None  
        
                    newDescription = descriptionComboBoxEditor.Text  
        
                   descriptionComboBoxEditor.Items.Clear()  
        
                   If Not String.IsNullOrEmpty(newDescription) AndAlso newDescription.Length >= 3 Then  
        
                        'Call the webservice  
        
                         ds = myWebService.GetItems(newDescription)  
        
                         dt = ds.Tables("MY_RESULTS")  
        
                        'Add each item to the combobox  
        
                        For Each item As DataRow In dt.Rows  
        
                            comboItem = New RadComboBoxItem  
        
                            comboItem.Text = item("DESCRIPTION")  
        
                            comboItem.Value = item("DESCRIPTION")  
        
                            If Not (TypeOf (item("TOOLTIP")) Is DBNull) AndAlso _  
        
                                item("TOOLTIP") IsNot Nothing Then  
        
                                comboItem.ToolTipText = item("TOOLTIP")  
        
                            End If  
        
                            descriptionComboBoxEditor.Items.Add(comboItem)  
        
                        Next  
        
                        'Show the drop down if it's not already shown  
        
                        If Not descriptionComboBoxEditor.IsPopupOpen Then  
        
                            descriptionComboBoxEditor.ShowPopup()  
        
                        End If  
        
                    End If  
        
                    pdHelperWebService.Dispose()  
        
                End Sub

Is there a better way to handle this? Is this functionality supported out of the box? Any help is greatly appreciated.

Thanks,
Sean

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 15 Jul 2009

7 answers

199 views

Title RibbonBar

HI:

when I maximize a MDIChildForm the text of my RibbonBar should be change...but does not change.
Should read: ApplicationName - [FormName]
can you help me?

RibbonBar

answered on 15 Jul 2009

1 answer

119 views

[Solved] RapPropertyNotFoundException

Hello,

When i want to grad and drop a radTreeView, un message d'erreur apparait disant que :

Failed to create component "RadTreeView"
... RapPropertyNotFoundException , not such property registred : IsMouseOverScrollBar
....

Treeview

answered on 15 Jul 2009

1 answer

140 views

Visual Studio Memory Increase due to Visual Style Builder

Hello,

I recently upgraded to 2009 Q2

As I've been working on getting my themes right for a gridview, I've opened the Visual Style Builder and closed it several times. The memory footprint on Visual Studio has increased to over a gig, and I can see it increasing without decreasing often when I open/close the VSB. Just an fyi.

Thanks!

Jeremy

Themes and Visual Style Builder

answered on 15 Jul 2009