Questions on UI for WinForms Forum

0 answers

107 views

Can anyone tell me what's wrong with the following code. When it gets to the line of code
grdStations.DataSource = taStations.GetData(1) I get a run time error for a "login failure for User5" . The tableadapter is a call to a stored procedure, and User5 has permissions to execute the procedure. Any help would be appreciated.

Thanks
Tom

Private Sub LoadStationGrid()
       Dim taStations As New stationsTableAdapters.GetStationsByDeptTableAdapter
        Dim dsTrucks As New stationsTableAdapters.TruckTableAdapter

        grdStations.DataSource = taStations.GetData(1)

        Dim template As GridViewTemplate = New GridViewTemplate
        template.DataSource = dsTrucks.GetData()
        grdStations.MasterGridViewTemplate.ChildGridViewTemplates.Add(template)

        Dim relation As GridViewRelation = New GridViewRelation(grdStations.MasterGridViewTemplate)
        relation.ChildTemplate = template
        relation.RelationName = "StationTrucks"
        relation.ParentColumnNames.Add("sID")
        relation.ChildColumnNames.Add("StationID")
        grdStations.Relations.Add(relation)


    End Sub

GridView

asked on 17 May 2010

8 answers

403 views

Overwriting MaskedEditBox text

Another MaskedEditBox question...is the following behavior by design, and if so is there a hack I can employ to stop it:

I have a MaskedEditBox set up with the mask of "(###) ###-####". I enter "(800) 555-1212" in the control. I select all of the text and attempt to type over it to enter a new number. Nothing happens. I have to select the text, delete it, then type again or overwrite one character at a time.

I would like to be able to select the text and begin typing to overwrite it, as with a normal textbox.

Josh

MaskedEditBox

answered on 16 May 2010

1 answer

117 views

ItemClick

Hello
i got this situation:
i have a textbox and a combo, i filled the combo in the form_load event
the combo properties:
DisplayMember = "Test1"
ValueMember = "Test2"

i want when i choose a item in the combo the textbox get the SelectedValue but
the problem with SelectedIndexChanged or SelectedValueChanged event, is this events fires even when i filled the combo
there are any event like ItemClick or else that only fires when you click on an item not every time you filled the combo?

if you have a query under this events, the query will be executed even if you don't want to
and this will affect the performance of your application because if you need to update the combo values often
the event will fire again and again

any help
thanks

P.S.
Sorry about my english, is not good enough

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 15 May 2010

1 answer

218 views

Disable Combobox based on a condition

Hi Telerik team,

I have a scenario where in my gridview i need to show up combox for some cells and hide them for some other cells based on a
condition.

I tried this using Cell_formatting event using the following code but it doesnt seem to work fine.

private void radGridView2_CellFormatting(object sender, CellFormattingEventArgs e)

{

if (e.CellElement.ColumnInfo.HeaderText == "Amount" && customers.ToList<Customer>()[e.CellElement.RowIndex].Amount < 10 )

{

check =

true;

}

if

(this.radGridView2.Columns[e.CellElement.ColumnIndex].UniqueName == "Type1")

{

if (check)

{

((Telerik.WinControls.UI.

GridComboBoxCellElement)(e.CellElement)).Visibility = ElementVisibility.Hidden;

check =

false;

}

Here check is a class level boolean variable and I have a customer collection with 3 properties. And the Type1 and Amount columns are dynamically added at runtime.

GridViewComboBoxColumn combo = new GridViewComboBoxColumn();

combo.HeaderText =

"Type1";

combo.UniqueName =

"Type1";

combo.DataSource =

this.BindData();

combo.DisplayMember =

"KeyValue";

combo.ValueMember =

"StringValue";

this.radGridView2.Columns.Add(combo);

GridViewTextBoxColumn data = new GridViewTextBoxColumn();

data.HeaderText =

"Amount";

data.UniqueName =

"Amount";

data.FieldName =

"Amount";

this.radGridView2.Columns.Add(data);

Kinldy help me out in doing this.

Thanks
KrisYs

GridView

answered on 15 May 2010

1 answer

120 views

how to restrict duplication of items in RadListBox in WinForms Q3 2009 SP1

Hi,
i use the RadListBox that comes with WinForms Q3 2009 SP1 in my C# project. One major difficulty i face now is i want to perform a condition on adding items to the radListBox. i.e, all items must be added only once.no duplication of same item must be present. In the standard listbox of Windows Forms i used if(!listbox1.item.contains(s)) to enter a string s, but i need to know how to implement this using RadListBox.

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 14 May 2010

1 answer

99 views

No tabbed child views

Hello,

How do I disable tabbed child views that belongs to the same parent but have different columns. I want to be able to expand many childs to see data from them at same time - not tab between them.

Example: Parent has two childs that are from different dataset and have different columns and data in them. Is there a way of not getting them tabbed when setting up their relations to the parent.

Regards

GridView

answered on 14 May 2010

1 answer

332 views

TextChanged event with SpinEditor and DateTimePicker doesn't work

Hello

I need to enable the update button in a form whenever the value of any control in the form change its value. It works fine for RadTextBox, RadComboBox, but it doesn't work either for RadSpinEditor nor RadDateTimePicker.

                     Private Sub Text_Changed(ByVal sender As System.Object, ByVal e As System.EventArgs) _         
                        Handles RadTextBox1.TextChanged, _         
                                RadComboBox1.TextChanged, _         
                                RadDateTimePicker1.TextChanged, _         
                                RadSpinEditor1.TextChanged         
                     
                    If RadTextBox1.ContainsFocus Or _         
                       RadComboBox1.ContainsFocus Or _         
                       RadDateTimePicker1.ContainsFocus Or _         
                       RadSpinEditor1.ContainsFocus Then         
                         Me.UpdateButton.Enabled = True         
                    End If         
                     
                            
                End Sub         

I tried a more generic way to do it with this procedure, that didn't work too:

                             
            Private Sub Text_Changed(ByVal sender As System.Object, ByVal e As System.EventArgs) _         
                        Handles RadTextBox1.TextChanged, _         
                                RadComboBox1.TextChanged, _         
                                RadDateTimePicker1.TextChanged, _         
                                RadSpinEditor1.TextChanged         
                     
                           
                    If HasFocus(sender) Then         
                        Me.RadButton1.Enabled = True         
                    End If         
                     
            End Sub         
                     
                     
            Public Function HasFocus(ByVal sender As System.Object) As Boolean         
                    Dim radElemento As Telerik.WinControls.RadElement         
                     
                    If sender.GetType Is GetType(Telerik.WinControls.UI.RadTextBox) Then         
                        radElemento = DirectCast(sender, Telerik.WinControls.UI.RadTextBox).FocusedElement         
                    End If         
                    If sender.GetType Is GetType(Telerik.WinControls.UI.RadComboBox) Then         
                        radElemento = DirectCast(sender, Telerik.WinControls.UI.RadComboBox).FocusedElement         
                    End If         
                    If sender.GetType Is GetType(Telerik.WinControls.UI.RadSpinEditor) Then         
                        radElemento = DirectCast(sender, Telerik.WinControls.UI.RadSpinEditor).FocusedElement         
                    End If         
                    If sender.GetType Is GetType(Telerik.WinControls.UI.RadDateTimePicker) Then         
                        radElemento = DirectCast(sender, Telerik.WinControls.UI.RadDateTimePicker).FocusedElement         
                    End If         
                    If sender.GetType Is GetType(Telerik.WinControls.UI.RadCheckBox) Then         
                        radElemento = DirectCast(sender, Telerik.WinControls.UI.RadCheckBox).FocusedElement         
                    End If         
                     
                    If Not radElemento Is Nothing AndAlso radElemento.ContainsFocus Then         
                        Return True         
                    Else         
                        Return False         
                    End If         
            End Function         

Thank you

TextBox

answered on 14 May 2010

1 answer

281 views

[Solved] Remove Listbox Horizontal Scrollbar

Hi, I cannot get rid of the horizontal scrollbar on a listbox.

I do ....

    
              listbox.HorizontalScroll.Enabled = False 
        
              listbox.HorizontalScroll.Visible = False

but it has not effect.

I am using 2010 Q1 SP2 in VS 2010.

Any help is greatly appreciated.
Thanks,
Diego

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 14 May 2010

1 answer

145 views

Expand-Collapse operation with single click

Hi there,
I am using Radcontrols for Winforms Q3 2008 SP2. I am facing some difficulties using radTreeView, i want expand and collapse operation on a single click. I tried to use tree_selected and tree_MouseDown events to get this behaviour but i was not able to get it done.

Please suggest some solution.
Regards
Aman

Treeview

answered on 14 May 2010

5 answers

217 views

Collapsible Pane Issues

I am using the CollapsiblePane example to learn more about this control. I am having problems setting the text property of the control. If I use the Theme Manager, I can set the property but, I cannot set it in the properties or in code. The component always seems to default to "CollapsiblePane". Is there something I am overlooking in setting the text property for the object?

Thanks

Buttons, RadioButton, CheckBox, etc

answered on 13 May 2010