Questions on UI for WinForms Forum

4 answers

123 views

answered on 17 Jan 2012

3 answers

123 views

Extending the selection rectangle to cover the row selector cells

Just switched from a Winforms DataGridView to a RadGridView on a client project and the customer has asked if they can have the Selection Rectangle (as shown here http://www.telerik.com/help/winforms/gridview-rows-selection-rectangle.html
) enabled on the row selectors as well.

Dragging anywhere in the cells starts the selection but attempting to drag over a row header does not continue it. They would like to be able to start selecting multiple rows by dragging from the row selectors (to the left of each row).

The issue is that they are used to the way the old DataGridView works and would like it to work the same way. A minor issue yes, but users don't like change.

Is there a hack so that I can enable the rectangle selection to show and start when a mouse click occurs on the row selector too?

Thanks in advance

Terry

GridView

answered on 17 Jan 2012

2 answers

124 views

Binding to list of objects containing 2 lists

Hello all,

Scenario:
I am using the latest Radcontrols for Winforms (2011.3.11.1116) and I have a list of classes(categories) comprised of the following:
Name (string)
SubCats (List of objects(1) - each with props (Name, list of Reports))
Reports (List of objects(1) - each with props (list of Reports))

Reports is made up of Name and ID

Is it possible to use something like:
.Displaymember = "Name\Name\Name\Name"
.ChildMemeber = "categories\Reports\SubCats\Reports

or am I forced to loop through my class and populate the nodes manually?

Any help is appreciated.

Treeview

answered on 17 Jan 2012

1 answer

161 views

Update version Telerik

Hi
I want to update Rad Control for WinForms Q3 2010 to latest version. How can I do it.
I try to use tool update of Telerik: Project Update Utility. But it occurs so many errors.
Thank you.

General Discussions

answered on 17 Jan 2012

4 answers

223 views

Filtering in RadGridView with GridViewMultiComboBoxColumn

Hi,

I am having problems with using MultiComboboxes in GridView while using the filter bar.
Normal editing is ok after I have handled the RadGridView1_CellEditorInitialized event
If I click on the filter bar column and then select a value it throws this error:

System.Reflection.TargetInvocationException was unhandled

Message=Exception has been thrown by the target of an invocation.

Source=mscorlib

StackTrace:

at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)

at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)

at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)

at System.Delegate.DynamicInvokeImpl(Object[] args)

at System.Delegate.DynamicInvoke(Object[] args)

at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)

at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)

at System.Threading.ExecutionContext.runTryCode(Object userData)

at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode,

Object userData)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)

at System.Windows.Forms.Control.InvokeMarshaledCallbacks()

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

at Telerik.WinControls.RadControl.WndProc(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.Run(ApplicationContext context)

at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()

at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()

at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)

at RMS.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81

InnerException: System.NullReferenceException

Message=Object reference not set to an instance of an object.

Source=Telerik.WinControls.GridView

StackTrace:

at Telerik.WinControls.UI.ScrollableRowsContainerElement.RemoveElement(Int32 position)

at Telerik.WinControls.UI.BaseVirtualizedContainer`1.MeasureElements()

at Telerik.WinControls.UI.BaseVirtualizedContainer`1.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.UI.ScrollableRowsContainerElement.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)

at Telerik.WinControls.RadElement.Measure(SizeF availableSize)

at Telerik.WinControls.UI.RowsContainerElement.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)

at Telerik.WinControls.RadElement.Measure(SizeF availableSize)

at Telerik.WinControls.UI.ScrollViewElement`1.MeasureView(SizeF availableSize)

at Telerik.WinControls.UI.ScrollViewElement`1.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.UI.GridTableElement.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)

at Telerik.WinControls.RadElement.Measure(SizeF availableSize)

at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()

at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayoutCallback(ILayoutManager manager)

InnerException:

the InnerException shows a System.NullReferenceException so I tried to force the filter value by handling the editor_TextChanged event, the code runs but the error is still thrown, code below:

Private Sub RadGridView1_CellEditorInitialized(sender As Object, e As Telerik.WinControls.UI.GridViewCellEventArgs) Handles RadGridView1.CellEditorInitialized

    Try

        Dim editor As Telerik.WinControls.UI.RadMultiColumnComboBoxElement = TryCast(e.ActiveEditor, Telerik.WinControls.UI.RadMultiColumnComboBoxElement)

        If editor IsNot Nothing AndAlso editor.Columns IsNot Nothing Then

            With editor

                If .ValueMember = "pkPostID" Then

                    .Columns("pkPostID").IsVisible = False

                    .Columns("tPostUPN").HeaderText = "UPN"

                    .Columns("tJobTitleName").HeaderText = "Job Title"

                    .Columns("dtPostStart").HeaderText = "Start Date"

                    .Columns("dtPostEnd").HeaderText = "End Date"

                ElseIf .ValueMember = "pkEmployeeID" Then

                    .Columns("pkEmployeeID").IsVisible = False

                    .Columns("lEmployeeNumber").HeaderText = "Emp Num"

                    .Columns("tEmployeeFirstName").HeaderText = "First Name"

                    .Columns("tEmployeeLastName").HeaderText = "Last Name"

                End If

                .AutoSizeDropDownToBestFit = True

                .AutoFilter = True

                RemoveHandler editor.TextChanged, AddressOf editor_TextChanged

                AddHandler editor.TextChanged, AddressOf editor_TextChanged

            End With

        End If

    Catch ex As Exception

        Call MessageBox.Show(ex.Message)

    End Try

End Sub

Private Sub editor_TextChanged(sender As Object, e As System.EventArgs)

    Try

        Dim editor As Telerik.WinControls.UI.RadMultiColumnComboBoxElement = DirectCast(Me.RadGridView1.ActiveEditor, Telerik.WinControls.UI.RadMultiColumnComboBoxElement)

        With editor

            If .ValueMember = "pkPostID" Then

                With .EditorControl

                    With .MasterTemplate.FilterDescriptors

                        .Remove("filterUPN")

                        .Add("filterUPN", Telerik.WinControls.Data.FilterOperator.IsEqualTo, editor.Value)

                    End With

                    .TableElement.Update(Telerik.WinControls.UI.GridUINotifyAction.FilteringChanged)

                End With

            ElseIf .ValueMember = "pkEmployeeID" Then

                With .EditorControl

                    With .MasterTemplate.FilterDescriptors

                        .Remove("filterEmpNum")

                        .Add("filterEmpNum", Telerik.WinControls.Data.FilterOperator.IsEqualTo, editor.Value)

                    End With

                    .TableElement.Update(Telerik.WinControls.UI.GridUINotifyAction.FilteringChanged)

                End With

            End If

        End With

    Catch ex As Exception

        Call MessageBox.Show(ex.Message)

    End Try

End Sub

If I select filters on other columns that are not MultiComboboxes they work without error.

I only have 2 columns in the grid that use multicomboboxes, the ValueMember and DisplayMember values are as follows:
Column 1 "POST"
ValueMember = "pkPostID" underlaying value datatype is Integer32
DisplayMember = "tPostUPN" underlaying value datatype is String

Column 2 "Employee"
ValueMember = "pkEmployeeID" underlaying value datatype is Integer32
DisplayMember = "lEmployeeNumber" underlaying value datatype is Integer32

the data is types and values are the same in the GridViewMultiComboBoxColumn elements.

Any help/ideas would be most welcome.

Thanks

Wayne Steel

GridView

answered on 17 Jan 2012

2 answers

110 views

Dock and Form Events

Hi,

I have a Main form that is set to MDI Parent This has a RadRibbon and a RadDock.the Dock is set to Auto Detect Mdi Children

I then Load a Form which contains a DataGridView in a Panel. I want to change the RadRibbon on the Main form to a Context Menu for the DataGridView when it is clicked and when the Form is Clicked the menu should return to the Form context.

I can switch to the DataGridView using its GotFocusEvent

To switch back the Form it is on does not fire the GotFocus, Activated or Click Events. is is possible to find out when the user has clicked on a form?

Thanks

Dock

answered on 17 Jan 2012

3 answers

74 views

Derive from RadRibbonBar

Hi,

I have created a class that derives from the RadRibbonBar so that i can create the elements on the bar in code and create an instance of the bar to apply them to my Form.

public class SappsRibbonBar : RadRibbonBar

{

public void CreateSappsRibbonBar(MenuType MenuType)

{

BuildFromDB(MenuType);

}

this builds the bar ok but there seems to be no theme attached to the bar. is there something i'm missing?

thanks

RibbonBar

answered on 17 Jan 2012

3 answers

88 views

TelerikEditor upgraded to .1219

Hi,
I have just upgraded to .1219 and would like to use the new nice features with the TelerikEditor.

this.richRibbonBar1 = new TelerikEditor.RichRibbonBar();

I get this error msg:

Error 3 The type or namespace name 'TelerikEditor' could not be found (are you missing a using directive or an assembly reference?)

What have I missed here?

Thank you,
Karl

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 17 Jan 2012

1 answer

161 views

GridView Row Add

i want to know how to add the rows added by the users to be added on the top
and also want to know how to add the rows that added by programatically to be added on the top.

i use the bound mode.i bind List<> to the "gridview.DataSource".

GridView

answered on 16 Jan 2012

15 answers

535 views

Modfying existing themes for RadForm

How do I load the existing themes (e.g. Office2007Black) into the visual style builder to customize them? Loading the RadForm control simply loads the control default, and I cannot add from assembly because, I believe, the RadForm does not inherit from RadControl and thus is not a choice.

Themes and Visual Style Builder

answered on 16 Jan 2012