Questions on UI for WinForms Forum

5 answers

346 views

Hello -

I have a very sophisticated RadElement hierarchy that contains RadTextBoxElements at the leaves. So far, I've only needed single line text boxes, but I now need to begin supporting multi-line text boxes. I see that RadTextBox has a Multiline property, but I don't see such a property on RadTextBoxElement even though I do see the MultilineChanged event. I'm hoping there is some way (even if through a backdoor) to make a RadTextBoxElement do multi-line text editing.

Thanks,

- Mike

TextBox

answered on 12 May 2009

1 answer

229 views

Creating columns add runtime

Hello,

i have a problem with the winform radgrid.

Trying to add columns runtime with the following loop:

public void CreateGridProductieMonitor(List<string> Kolommen)

{

radGridViewProductie.DataSource = schrapViewBindingSource;

foreach (string Kol in Kolommen)

{

if (!string.IsNullOrEmpty(Kol.Trim()))

{

GridViewTextBoxColumn textBoxColumn = new GridViewTextBoxColumn();

textBoxColumn.UniqueName = Kol;

textBoxColumn.HeaderText = Kol;

textBoxColumn.FieldName = Kol;

radGridViewProductie.MasterGridViewTemplate.Columns.Add(textBoxColumn);

}

The datasource of the grid is a generic list. The fieldname is 100% correct.
Only the first column shows data. The other columns are empty. When i change the order of the columns the result is the same. The first column added shows data.
I tried adding the columns before and after binding to the datasource.

Greetings Tim

GridView

answered on 12 May 2009

1 answer

192 views

Adding items to Quick Access toolbar overlow menu

I am using C# and Telerik controls version 2009.1.9.414.

In the Quick Access toolbar overflow menu, I would like to create additional items. I am referring to items like "Show Below the Ribbon" and "Minimize the Ribbon", not the items at the top that are added dynamically to correspond to the toolbar buttons.

Is there a way to add items? I try:

    
            this.radRibbonBar1.RibbonBarElement.QuickAccessToolBar.OverflowButtonElement.DropDownMenu.Items.Add(new RadMenuItem("testing"));

in the OverflowButtonElement_DropDownOpening event handler, but the CPU goes to 100% and the app seems to hang.

Any suggestions?

Thanks,
Nick

RibbonBar

answered on 12 May 2009

3 answers

115 views

gridview number column [MiddleCenter] ?

hi

gridview number column [MiddleCenter] ?

http://www.winterer.co.kr/file/grid1.jpg

GridView

answered on 11 May 2009

4 answers

284 views

How to affect height of dropdown?

Obviously, changing

comboBox1.MultiColumnComboBoxElement.DropDownHeight

doesn't do the trick. I've tried various things but with no success?

How can I set exact height of dropdown? It'd be nice if I was able to set height of dropdown by specifying number of rows to display.

Regards,
Daniel

MultiColumn ComboBox

answered on 11 May 2009

3 answers

184 views

Acces to listbox in Panelbar

I am using the following code to build a PanelBar from a database table. For each "FileType" I add a panel and place a ListBox in the panel. This works just fine.

    
                        For Each itemFileTypes In collFileTypes 
        
                            If itemFileTypes.IsInUse Then 
        
                                Dim newGroupElement As New RadPanelBarGroupElement 
        
                                newGroupElement.EnableHostControlMode = True 
        
                                newGroupElement.Caption = itemFileTypes.Descr 
        
                                Dim lst As New RadListBox 
        
                                lst.Name = itemFileTypes.Descr 
        
                                lst.Dock = DockStyle.Fill 
        
                                lst.Text = itemFileTypes.Type 
        
                                newGroupElement.ContentPanel.Controls.Add(lst) 
        
                                radPanelBar.Items.Add(newGroupElement) 
        
                            End If 
        
                        Next 
        
                        radPanelBar.Dock = DockStyle.Left 
        
                        radPanelBar.ThemeName = "ControlDefault" 
        
                        ' Set focus to Log panel 
        
                        radPanelBar.Items("Log").Focus()  ' This throws exception

Later in my code I need to access the ListBox to assign its DataSource and load the appropriate data into each ListBox.

    
                    ' For each panel find the listbox and assign its DataSource etc 
        
                    ' add a listbox event handler for SelectedValueChanged. 
        
                    Try 
        
                        Dim pnl As RadPanelBarGroupElement 
        
                        For Each pnl In radPanelBar.Items 
        
                            Dim lst As RadListBox 
        
                            'newGroupElement.ContentPanel.Controls.Add(lst) 
        
            ' This is where I come unstuck! 
        
                            lst = pnl.Items(0)  or  pnl.ContentPanel.Controls(0) ???

                            With lst 
        
                                .ValueMember = "id" 
        
                                .DisplayMember = "FileDescription" 
        
                                .DataSource = GetFileNamesByType(CType(lst.Text, Integer)) 
        
                                '.EmptyRows = True 
        
                                AddHandler lst.SelectedValueChanged, AddressOf ListBoxSelectedValueChanged 
        
                            End With 
        
                        Next

See where I come unstuck above. What am I missing?

'newGroupElement.ContentPanel.Controls.Add(lst)

If I added a listbox to the controls collection of the ContentPanel of the GroupItemElement, why can I not access the ContentPanel of the GroupElement?

e.g.

lst = GroupElement.ContentPanel.Controls(0)

Declan

Panelbar (obsolete as of Q2 2010)

answered on 11 May 2009

5 answers

138 views

windows contextmenustrip on radtreenode

Good morning Telerik Team,

I'm wondering if it's possible to use a Windows ContextMenuStrip on RadTreeNode control. I see it's possible to use it on the Radtreeview control, but I need context menus on the RadTreeNodes too.

Thanks,

Teba.

Treeview

answered on 11 May 2009

1 answer

151 views

CSLA - RadGridView - NewRow and Grouping

Hello,
We are evaluating the WinForm controls and have downloaded the free trial. We are also using custom business objects based on Richard Lhotka's CSLA framework. We have run into some issues with regards to the RadGridView.

1. The RadGridview is bound to a BindingSource control which in turn is bound to our business object. With regards to adding new rows via the RadGridView, we had to override the AddNewCore method that elimiated one of the errors the Grid reported. Now the New Row is displayed but there is an issue with the behavior of adding records. If you set a value for one of the cells of the new row and press the Tab button to proceed to the next cell of the current record, this will create a new record instead of continuing editing the current record.

2. When Grouping by a column is there an event that we can tie into or override a method? Currently we recieve an InvalidCastException when the Grid tries to cast the field to a type of System.IComparable.

Best Regards

GridView

answered on 11 May 2009

3 answers

220 views

Gridview Update

I have an unbound gridview and the data behind is update constantly. What is considered to be the best method to update data in the gridview? Which will have least impact on performance?

GridView

answered on 11 May 2009

4 answers

282 views

Clicking a row triggers the Cellformatting event to fire.

I'm not sure if im using the correct event but let me explain whats happening.

i have a gridview control which display data/images. When a image is changed it fires the cellformating event to play a audio sound, but when i click on the row or cell on the grid it fire the cellformatting event again. Why is this happening?is this by design. I only want to play the audio when the image value changes.

Thanks in advance!

GridView

answered on 11 May 2009