Questions on UI for WinForms Forum

3 answers

319 views

Updating GridViewCheckBoxColumn value on another column's change

Hello

I have a GridViewCheckBoxColumn column added to a GridView that serves as a visual flag about the row's update status. I want to validate and update that checkbox' ToggleState while I am in the CellEndEdit of another column (that have a Spinner editor).

This gives me a Null value on the left side. (as well as many variants thereof)

if ((ToggleState)e.Row.Cells["RegleActive"].Value == ToggleState.On)

Thanks

GridView

answered on 02 Nov 2012

3 answers

375 views

What the best way to use a custom theme?

Hi, I'm trying to build a custom theme to use over all my application.
I stardet from an existing theme, as suggested, and I've build my custom them as a tssp file.

I added the tssp to my project and I setted it as application theme:

ThemeResolutionService.LoadPackageResource("MyProject.MyCustomTheme.tssp")

ThemeResolutionService.ApplicationThemeName = "MyCustomTheme"

When I build and I run the application, all the forms and controls appears with my custom theme, and this is very good.
But at design time, using the visual studio form editor I don't see my theme.
How can I see my theme even in design time?

Do I have to load the same theme using a RadThemeManager (from the xml equivalent files) and set the ThemeName property for all controls?
If yes, which is the utility of using the ApplicationThemeName property?

Thank you.

Themes and Visual Style Builder

answered on 02 Nov 2012

1 answer

108 views

Add Custom Items in RadRibbonBarGroup "Add an Item" list

I have made my custom ribbon bar like this:

public class TMRibbonBar:RadRibbonBar

{

}

in similar fashion, I have made my custom buttons ie.RadButtonElement, RadCheckBoxElement.
What I want is how can I add a button of my own in the "Add an Item" option of "Right Click - Context Menu" of "RadRibbonBarGroup". I mean, my custom button should appear in the list to be selected.

I can add my custom button in the RadRibbonBarGroup dynamically, but how can I do it through the UI?
I hope am not raising a totally invalid requirement.

RibbonBar

answered on 02 Nov 2012

3 answers

151 views

RadContextMenu cannot be converted to RadDropDownMenu

Win 7 - 64bit,
Telerik WinForms Controls 2012.2.912.40
Using VB.net

Hello:

I placed a RadContextMenu on a Form
I then attempted to associate the RCM to a RadGridView in the ContextMenuOpening Event...

Private Sub RGV_ContextMenuOpening(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.ContextMenuOpeningEventArgs)

e.ContextMenu =

Me.RadContextMenuForGrids

End

Sub

Why is the compiler seeing the 2 objects as being different. Here is the error?

RadContextMenu cannot be converted to RadDropDownMenu?

Thanks,
Mark

GridView

answered on 02 Nov 2012

1 answer

84 views

Diseable Highlighting Cell if not selected

Helo,

I have severals radgrid superposed (like picture ) and
I want to remove border of cell (highlited) in a radgrid if the cell is not selected to keep only one cell highlited (selected cell)
I use a CellSelect mode

I tried this code but the result is ugly, Because of original cell border (blue) is deleted Also

RadGridView_ViewCellFormatting(object sender, CellFormattingEventArgs e)

{

GridDataCellElement dataCell = e.CellElement as GridDataCellElement;

if (dataCell != null)

{

Color borderColor = Color.Transparent;

if (!dataCell.IsSelected)

borderColor = Color.Red;

dataCell.BorderColor = borderColor;

}

Thank you for your help,

GridView

answered on 02 Nov 2012

1 answer

117 views

Pragmatically Call the SelectedIndex Change event for Dropdownlist

Hi I need to call the SelectedIndex event after loading the form.
The reason for this is that the dropdownlist determines if other controls are displayed on the form

here is a example of the idea

Partial Class Example

Public Function LoadData() As Boolean

Me.DropDownList1.DataSource = Types.ConfirmationType

If Not CustomerName Is Nothing Then

' Where the DropDownlist ID is DropDownList1

Me.DropDownList1.SelectedText = "Driver"

' Calls the method directly passing the appropriate sender

Me.DropDownList1_SelectedIndexChanged(Me.DropDownList1, Nothing)

End If

End Function

Protected Sub DropDownList1_SelectedIndexChanged(sender As System.Object, e As Telerik.WinControls.UI.Data.PositionChangedEventArgs) Handles DropDownList1.SelectedIndexChanged

Dim options As String = Me.DropDownList1.SelectedText

Select Case options

Case "Driver"

'Display the Driver mobile fields

Me.lblDriverMobile.Visible = True

Me.txtDriverMobile.Visible = True

Me.ddlDriverMobileCode.Visible = True

Me.pbDriverMobile.Visible = True

Case Else

'Hide the Driver mobile fields

Me.lblDriverMobile.Visible = False

Me.txtDriverMobile.Visible = False

Me.ddlDriverMobileCode.Visible = False

Me.pbDriverMobile.Visible = False

End Select

End Sub

End Class

The issue is that the call does not happen and the line

Me.DropDownList1_SelectedIndexChanged(Me.DropDownList1, Nothing)

Does not seem to work ?
What I get in the options value is a empty string ?

Any ideas

DropDownList

answered on 02 Nov 2012

1 answer

121 views

Adding bound objects in child view in Hierarchy GridView

I have the following RowSourceNeeded handler :

void gvEmployes_RowSourceNeeded(object sender, GridViewRowSourceNeededEventArgs e)

{

if (e.Template == gvtEmployeLogiciels)

{

using ( var repo = new EmployesRepository())

{

foreach (LogicielDTO l in repo.GetLogicielsOfEmploye((EmployeDTO)e.ParentRow.DataBoundItem))

{

GridViewRowInfo gridRow = e.Template.Rows.NewRow();

gridRow.Cells["nom"].Value = l.nom;

gridRow.Cells["nbLicense"].Value = l.nbLicense;

e.SourceCollection.Add(gridRow);

}

However, I want the objects to be bound instead of just filling in cells so that something like this would work :

void gvEmployes_UserDeletingRow(object sender, GridViewRowCancelEventArgs e)

{

foreach (var row in e.Rows)

{

switch

(row.DataBoundItem.GetType().Name) // This will error if you are deleting a LogicielDTO row.

{

case "EmployeDTO":

MessageBox.Show("Deleteing " + ((EmployeDTO)row.DataBoundItem).nom);

break;

case "LogicielDTO":

MessageBox.Show("Deleteing " + ((LogicielDTO)row.DataBoundItem).nom);

break;

}

How can I acheive this?

GridView

answered on 02 Nov 2012

1 answer

86 views

items in tabular fashion in RadRibbonbarButtons

Hi,

I want to add 8 radio buttons , in tabular fashion in radribbon bar(Please check in attached image).
I have added a RadRibbonbarGroup=>2 horizontal RadRibbonbarButtons(with vertical orientation).

As these buttons are placed in two separate ribbonBarbuttons,therefore I can select two radio buttons simultaneously , one from each ribbonbarButton.

Please let me know how to keep the group of radiobuttons same, although are placed in different radribbonbarButton group.

Thanks in Advance!
Anjali

RibbonBar

answered on 02 Nov 2012

1 answer

82 views

LaregeChange error

Upgraded to the latest version of telerik. From v.2012.1.301 to v2012.3.1017. We now get the following exception when UI adds a UserControl, which has a RadTreeView to a RadPageViewTabPage:

ExceptionMessageBoxShown@Value of '-2147483648' is not valid for 'LargeChange'. 'LargeChange' must be greater than or equal to 0.
Parameter name: LargeChange
System.ArgumentOutOfRangeException: Value of '-2147483648' is not valid for 'LargeChange'. 'LargeChange' must be greater than or equal to 0.
Parameter name: LargeChange
at Telerik.WinControls.UI.RadScrollBarElement.set_LargeChange(Int32 value)
at Telerik.WinControls.UI.RadTreeViewElement.UpdateOnMeasure(SizeF availableSize)
at Telerik.WinControls.UI.VirtualizedScrollPanel`2.MeasureOverride(SizeF availableSize)
at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)
at Telerik.WinControls.RadElement.Measure(SizeF availableSize)
at Telerik.WinControls.RootRadElement.MeasureOverride(SizeF availableSize)
at Telerik.WinControls.RootRadElement.MeasureCore(SizeF availableSize)
at Telerik.WinControls.RadElement.Measure(SizeF availableSize)
at Telerik.WinControls.RadElementTree.PerformInnerLayout(Boolean performMeasure, Int32 x, Int32 y, Int32 width, Int32 height)
at Telerik.WinControls.RadControl.OnLoad(Size desiredSize)
at Telerik.WinControls.UI.RadTreeView.OnLoad(Size desiredSize)
at Telerik.WinControls.RadControl.LoadElementTree(Size desiredSize)
at Telerik.WinControls.RadControl.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at System.Windows.Forms.Control.set_Visible(Boolean value)
at Telerik.WinControls.UI.RadPageViewPage.set_Visible(Boolean value)
at Telerik.WinControls.UI.RadPageViewElement.SetSelectedContent(RadPageViewItem item)
at Telerik.WinControls.UI.RadPageViewElement.SetSelectedItem(RadPageViewItem item)
at Telerik.WinControls.UI.RadPageViewStripElement.SetSelectedItem(RadPageViewItem item)
at Telerik.WinControls.UI.RadPageViewElement.OnSelectedPageChanged(RadPageViewEventArgs e)
at Telerik.WinControls.UI.RadPageView.SetSelectedPage(RadPageViewEventArgs e)
at Telerik.WinControls.UI.RadPageView.set_SelectedPage(RadPageViewPage value)
at MainApp.MainShell.Display(IContent aContent) in C:\svn\dev\source\ui\MainApp\MainShell\MainShell.cs:line 1832

General Discussions

answered on 01 Nov 2012

1 answer

70 views

Design Time Text Not Displaying

I feel like this is something obvious that I am overlooking. I want to insert a bulleted list into a richtextbox at design time. I use the MarkupEditor to get the list in and it displays the text with the proper formatting in the Text property but nothing shows up in the richtextbox itself. The help document states that design time text can be inserted and made read only. What am I missing here?

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 01 Nov 2012