Questions on UI for WinForms Forum

3 answers

256 views

Hello Telerik Team,

I am facing a rather strange problem with the telerik dropdownlist and listbox.

I am developing an application which relies on a couple of nonmanaged driver-dlls. As soon as I load one particular dll, after that I cannot instanianate ANY telerik dropdownlist or listbox. As soon as the controls ctor is called, an arithmeticexception is thrown. The call stack is as follows:

bei Telerik.WinControls.UI.RadScrollBarElement.get_ThumbLengthProportion()

bei Telerik.WinControls.UI.RadScrollBarElement.SetupThumb(Int32 newValue, Boolean thumbLocationOnly)

bei Telerik.WinControls.UI.RadScrollBarElement.set_Maximum(Int32 value)

bei Telerik.WinControls.UI.VirtualizedScrollPanel`2..ctor()

bei Telerik.WinControls.UI.RadListElement..ctor()

bei Telerik.WinControls.UI.PopupEditorElement.CreateChildElements()

bei Telerik.WinControls.UI.RadDropDownListElement.CreateChildElements()

bei Telerik.WinControls.RadElement.CallCreateChildElements()

bei Telerik.WinControls.RadElement.Construct()

bei Telerik.WinControls.RadElement..ctor()

bei Telerik.WinControls.RadItem..ctor()

bei Telerik.WinControls.UI.PopupEditorElement..ctor()

bei Telerik.WinControls.UI.RadDropDownListElement..ctor()

bei Telerik.WinControls.UI.RadDropDownList.CreateChildItems(RadElement parent)

bei Telerik.WinControls.RadControl.Telerik.WinControls.IComponentTreeHandler.CreateChildItems(RadElement parent)

bei Telerik.WinControls.RadControl.ComponentOverrideElementTree.CreateChildItems(RadElement parent)

bei Telerik.WinControls.RadControl.Construct()

bei Telerik.WinControls.RadControl..ctor()

bei Telerik.WinControls.UI.RadDropDownList..ctor()

bei SenseIT._4Dtwo.CatchIT.Forms.AddNewDevice.InitializeComponent() in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Forms\AddNewDevice.Designer.cs:Zeile 37.

bei SenseIT._4Dtwo.CatchIT.Forms.AddNewDevice..ctor() in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Forms\AddNewDevice.cs:Zeile 20.

bei SenseIT._4Dtwo.CatchIT.Controls.DeviceView.radButton1_Click(Object sender, EventArgs e) in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Controls\DeviceView.cs:Zeile 161.

bei System.Windows.Forms.Control.OnClick(EventArgs e)

bei Telerik.WinControls.RadControl.OnClick(EventArgs e)

bei Telerik.WinControls.UI.RadButton.ButtonElement_Click(Object sender, EventArgs e)

bei Telerik.WinControls.RadItem.OnClick(EventArgs e)

bei Telerik.WinControls.UI.RadButtonItem.OnClick(EventArgs e)

bei Telerik.WinControls.RadItem.DoClick(EventArgs e)

bei Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadElement.DoMouseUp(MouseEventArgs e)

bei Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)

bei Telerik.WinControls.RadControl.OnMouseUp(MouseEventArgs e)

bei System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

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

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

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

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

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

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

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

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

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

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

bei System.Windows.Forms.Application.Run(Form mainForm)

bei SenseIT._4Dtwo.CatchIT.Program.Main() in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Program.cs:Zeile 21.

bei System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)

bei System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

bei Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

bei System.Threading.ThreadHelper.ThreadStart_Context(Object state)

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

bei System.Threading.ThreadHelper.ThreadStart()

Do you have any idea how I could work around this problem?

best regards

Ulrik

DropDownList

answered on 14 Oct 2010

15 answers

449 views

[Solved] Nested Child Grids

I have the following Grid structure:

MasterGridViewTemplate (dgTransactions) --> ChildGridTemplate1 (cSubCat) --> ChildGridTemplate2 (cTrans)

I am populating each Template with Data but the ChildGridTemplate2 is not displaying any data - even though that the Datasource is populated with data.

Code snippet:

GridViewTemplate cSubCat = new GridViewTemplate(this.dgTransactions);

GridViewRelation relGridSubCat = new GridViewRelation(this.dgTransactions.MasterGridViewTemplate);

relGridSubCat.ChildTemplate = cSubCat;

relGridSubCat.ChildColumnNames.Add("CategoryType");

relGridSubCat.ParentColumnNames.Add("CategoryType");

this.dgTransactions.Relations.Add(relGridSubCat);

this.dgTransactions.MasterGridViewTemplate.ChildGridViewTemplates.Add(cSubCat);

GridViewTemplate cTrans = new GridViewTemplate(this.dgTransactions);

GridViewRelation relSubCatTrans = new GridViewRelation();

relSubCatTrans.ChildTemplate = cTrans;

relSubCatTrans.ParentTemplate = this.dgTransactions.MasterGridViewTemplate.ChildGridViewTemplates[0];

relSubCatTrans.ChildColumnNames.Add("CategorySubType");

relSubCatTrans.ParentColumnNames.Add("CategorySubType");

this.dgTransactions.Relations.Add(relSubCatTrans);

cSubCat.ChildGridViewTemplates.Add(cTrans);

var sub = from x in this.CurrentTransactions

select new { CategorySubType = x.CategorySubType, CategoryType = x.CategoryType };

this.dgTransactions.DataSource = sub.Select(grp => new { grp.CategoryType }).Distinct().ToList(); ;

cSubCat.DataSource = sub.Select(grp => new { grp.CategorySubType, grp.CategoryType }).Distinct().ToList();

cTrans.DataSource = this.CurrentTransactions.ToList();

GridView

answered on 14 Oct 2010

14 answers

306 views

Chang Current Row at chang current row at hierarchical

Hello,
I want to chang current row at radgrid .I use 3 level hierarchical and want to chang seleted row from level 1 to level 2 and so on.

GridView

answered on 14 Oct 2010

2 answers

220 views

RadGridView AllowAddNewRow Error

Hello,

I´m traying to use the AllowAddNewRow property of RadGridView but
i have an error when set to true this property.

The error ocurrs when you configures the grid with readonly columns property.
When you drag and drop the "Click here to add new row" cell to other readonly cell in diferent row.

this is my example

GridViewTextBoxColumn

txtEstatus = new GridViewTextBoxColumn();

txtEstatus.Name =

"Estatus";

txtEstatus.HeaderText =

"Estatus";

txtEstatus.ReadOnly =

true;

radGridView1.Columns.Add(txtEstatus);

GridViewTextBoxColumn txtot = new GridViewTextBoxColumn();

txtot.Name =

"OT";

txtot.ReadOnly =

true;

txtot.HeaderText =

"OT";

radGridView1.Columns.Add(txtot);

radGridView1.AllowAddNewRow =

true;

radGridView1.AutoSizeColumnsMode =

GridViewAutoSizeColumnsMode.Fill;

radGridView1.Rows.Add((

new List<string> {"333","333","dd","dd" }).ToArray());

to resolve this error i have to set each cell for this row to readonly

The error says Message= "No se puede convertir un objeto de tipo 'Telerik.WinControls.UI.GridViewDataRowInfo' al tipo 'Telerik.WinControls.UI.GridViewNewRowInfo'.

"Unable to cast object of type 'Telerik.WinControls.UI.GridViewDataRowInfo' to type 'Telerik.WinControls.UI.GridViewNewRowInfo'.

GridView

answered on 14 Oct 2010

7 answers

207 views

[Solved] Validation

Hi,
is there any way to shorten my validation code?? like using case, etc..???
I have been tried many ways to shortened it, but i got nothing but error because the parameter (ByVal e As Telerik.WinControls.UI.CellValidatingEventArgs)
here my code:

Private Sub TabelBuku_CellValidating(ByVal sender As System.Object, ByVal e As Telerik.WinControls.UI.CellValidatingEventArgs) Handles TabelBuku.CellValidating

Dim kolom = TryCast(e.Column, GridViewDataColumn)

If ((TypeOf e.Row Is GridViewDataRowInfo Or (TypeOf e.Row Is GridViewNewRowInfo)) AndAlso (kolom IsNot Nothing) AndAlso (kolom.FieldName = "Tahun Terbit")) Then

Dim nilai = DirectCast(e.Value, String)

If (String.IsNullOrEmpty(nilai)) Then

e.Cancel = True

e.Row.ErrorText = "Tahun Terbit Belum Diisi"

warningKesalahan(Color.LightYellow, Color.Red, "Tahun Terbit Belum Diisi!!")

Else

e.Row.ErrorText = String.Empty

warningKesalahan(Color.Transparent, Color.LimeGreen, "Editor Data Buku")

End If

If ((TypeOf e.Row Is GridViewDataRowInfo Or (TypeOf e.Row Is GridViewNewRowInfo)) AndAlso (kolom IsNot Nothing) AndAlso (kolom.FieldName = "IdBuku")) Then

Dim nilai = DirectCast(e.Value, String)

If (String.IsNullOrEmpty(nilai)) Then

e.Cancel = True

e.Row.ErrorText = "ID Buku Harus Diisi"

warningKesalahan(Color.LightYellow, Color.Red, "ID Buku Harus Diisi")

Else

e.Row.ErrorText = String.Empty

warningKesalahan(Color.Transparent, Color.LimeGreen, "Editor Data Buku")

End If

End Sub

GridView

answered on 13 Oct 2010

7 answers

491 views

Resize Images in GridCommandCellElement

I am trying to use an image on the buttons in GridCommandCellElement columns. How do I Zoom the image to fit the cell?

GridView

answered on 13 Oct 2010

1 answer

295 views

[Solved] Problem with MaskEditTextbox and decimal values

Hello Telerik,

we are currently working on a project where we using your masked textbox. We bounded a BindingSource (System.Windows.Forms.BindingSource) to a RadMaskedEditBox. The BindingSource is linked to a class instance with several properties (string, double etc.).
The textbox is masked with "c2" and the masktype is "numeric". Our problem is when we are entering a value and the group or decimal seperator is a comma, for example "200,00", the value becomes 20000,00 (we are a german developer team). The same goes for english number formats the moment a comma is involved (2,000.00 becomes 200,000.00).
The property the textbox is linked to contains a value of the datatype double.

Is there a solution to this problem because we really want to use your controls.

Here a some more information about our configuration:
OS: XP and Win7
Telerik: RadControls fpr WinForms Q10

thanks in advance and greetings from germany

MaskedEditBox

answered on 13 Oct 2010

10 answers

352 views

Problem with ContextMenuOpening

hi,
I have a radcontextmenu which only seems to work once. When I right click, my new items are added to the default menu, but when I go to do it again, I get the error message: 'Cannot remove the specified item because it was not found in the specified collection.'

here is the code:

Private

Sub grdSearch_ContextMenuOpening(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.ContextMenuOpeningEventArgs) Handles grdSearch.ContextMenuOpening

Try

e.ContextMenu.Items.AddRange(rcmDebts.Items)

Catch ex As Exception

MsgBox(ex.Message)

End Try

End Sub

GridView

answered on 13 Oct 2010

5 answers

189 views

Design-Time, add UserControl in a RadToolStripItem

Hi
I want to add UserControl in a RadToolStripItem. Not when the coding.

Thanks

Toolstrip (obsolete as of Q3 2010)

answered on 13 Oct 2010

2 answers

200 views

[Solved] Issue with CellFormatting Keeping Cell ForeColor

I change the Cell Elements ForeColor To Red if the value is less than Zero.

Private Sub GridPrimerResults_CellFormatting(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles GridPrimerResults.CellFormatting

If CInt(e.CellElement.RowInfo.Cells(1).Value) <= 0 Then

e.CellElement.NumberOfColors = 1

e.CellElement.ForeColor = Color.Red

e.CellElement.DrawFill = True

End If

End Sub

It works fine on Load. When I scroll beyond the text that was Default Black, and scroll back up it now becomes red. When I click to Export the grid to Excel the Forecolor returns.

Any ideas on why my color changes when I scroll past the values or how I can prevent it from changing to red?

Attached are screen shots of the rows and how the changed after scrolling.

GridView

answered on 13 Oct 2010