Questions on UI for WinForms Forum

3 answers

164 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

95 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

128 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

126 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

93 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

92 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

76 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

1 answer

258 views

GridViewComboBoxColumn - showing an initial value

The documentation states:

> If you want to set initial values, you should match the GridViewComboBoxColumn to a column which has appropriate values in it. To do this, you should set the FieldName of the GridViewComboBoxColumn to be the same as the name of the existing column.

Can I see a code sample of how this is done?

I have a text column that I am able to successfully bind to show the values, but I'm not able to replace that text column with a ComboBoxColumn and still have it set the initial values like the text column does. Here's a code sample of what I've tried:

uxgrdBindingsGrid.MasterTemplate.Columns.Clear();

uxgrdBindingsGrid.AutoGenerateColumns = false;

uxgrdBindingsGrid.DataSource = bindings.ToList<SymbolBinding>();

// this textbox column displays fine

GridViewTextBoxColumn dataSourceTextColumn = new GridViewTextBoxColumn();

dataSourceTextColumn.Name = "dataSourceTextColumn";

dataSourceTextColumn.HeaderText = "Data Source";

dataSourceTextColumn.FieldName = "DataSourceProperty";

dataSourceTextColumn.TextAlignment = ContentAlignment.MiddleLeft;

dataSourceTextColumn.Width = 150;

dataSourceTextColumn.IsVisible = true;

uxgrdBindingsGrid.MasterTemplate.Columns.Add(dataSourceTextColumn);

// this combobox column displays the drop down list if double-clicked, but does not display any values initially

GridViewComboBoxColumn dataSourceComboColumn = new GridViewComboBoxColumn("DataSourceProperty");

dataSourceComboColumn.Name = "dataSourceComboColumn";

dataSourceComboColumn.HeaderText = "Data Source";

dataSourceComboColumn.DataSource = this.dataSources;

dataSourceComboColumn.DropDownStyle = RadDropDownStyle.DropDownList;

dataSourceComboColumn.ValueMember = "ID";

dataSourceComboColumn.DisplayMember = "Path";

dataSourceComboColumn.FieldName = "DataSourceProperty";

dataSourceComboColumn.TextAlignment = ContentAlignment.MiddleLeft;

dataSourceComboColumn.Width = 150;

uxgrdBindingsGrid.MasterTemplate.Columns.Add(dataSourceComboColumn);

Thanks,
--Jason

GridView

answered on 01 Nov 2012

1 answer

386 views

How to set the CommandBarButton default size

Hi,
I tried to create a commandbar with only CommandBarButton elements, each one displayed as image only.
How can I set by default the size to contains 32x32 images instead of 16x16?

Thank you

CommandBar

answered on 01 Nov 2012

2 answers

201 views

RadAutoCompleteBox - Conditionally format token depending on value

Hi,

I'd like to conditionally format each token in a RadAutoCompleteBox control depending on the value of the each token. For example, I'd like to format all items that can be matched in the AutoComplete collection as green and all unmatched items in red.

There is an introduction on formatting tokens at:

http://www.telerik.com/help/winforms/editors-autocompletetextbox-formatting-blocks.html

however I can't find a property in the token variable that gives me access to the corresponding entry in the Items collection in the RadAutoCompleteBox control so that I can style the token conditionally. How can I get access to corresponding item being formatted?

Kind regards,
Dave.

AutoCompleteBox

answered on 01 Nov 2012