Questions on UI for WinForms Forum

11 answers

449 views

[Solved] DropDownList MouseWheel Behavior in C# Outlook VSTO Add-in

I have a C# Outlook VTSO Add-in project that has issue regarding the behavior of the comboboxcolumn in a datagrid when using the mousewheel. The item just jumps to the first or last item when scrolling using the mousewheel, and also when pressing the up or down arrow while the dropdownlist is visible.

I tried to replicate the issue on a new Telerik C# Windows Forms Application but it seems that the issue only exist for C# Outlook VTSO Add-in projects. What I did was to add a dropdownlist and add more than 20 items and tried scrolling using the mouse wheel on both win form app and vtso addin. The issue only exist on the vtso addin.

Are there any workarounds about this?

Attached here are screen capture of outlook vtso addin and another for telerik windows form.

DropDownList

answered on 06 Feb 2020

5 answers

681 views

Overriding message box theme when application theme is set

Is it possible to have a theme for the whole application and a different theme be set with SetTheme for the RadMessageBox? If I set the application theme, SetTheme has no effect. I see how I can override specific controls in your documentation, but the MessageBox is not a form control and, as far as I can see, the only way to set its theme is with the SetTheme function. Can I change the ControlDefault theme to, for example, Breeze, so my forms will automatically use the theme I want for the whole application? If so, how do I go about doing it?

Themes and Visual Style Builder

answered on 05 Feb 2020

12 answers

1.0K+ views

[Solved] PropertyGrid - How to show string property as password property?

Hi,

Anyone know how to display string as password in RadPropertyGrid?
I've tried to use the PasswordPropertText attribute as the original PropertyGrid, but it is not working.

[PasswordPropertyText(true)]

public string Password {get;set;}

I hope that telerik still maintain the original behaviour, to keep the control's usage intuitive.

Regards,
Laks

PropertyGrid

answered on 04 Feb 2020

4 answers

228 views

[Solved] Missing RowHeaderColumn and ContextMenu throw an Exception on CustomNewRowInfo

Hi...

i got some problem on my custom new row element according to this link, but on my code i made with button element

internal class CustomGridNewRowElement : GridRowElement

{

private GridCellElement cellElement;

private RadButtonElement radButtonElement;

public RadButtonElement AddButtton => this.radButtonElement;

public CustomGridNewRowElement() { }

protected override void CreateChildElements()

{

base.CreateChildElements();

this.cellElement = new GridCellElement(null, this) { StretchHorizontally = true, StretchVertically = true };

this.radButtonElement = new RadButtonElement("Add New");

this.Children.Add(cellElement);

this.cellElement.Children.Add(this.radButtonElement);

this.cellElement.ClipDrawing = true;

}

public override bool IsCompatible(GridViewRowInfo data, object context)

{

return data is CustomGridViewRowInfo;

}

internal class CustomGridViewRowInfo : GridViewNewRowInfo

{

public CustomGridViewRowInfo(GridViewInfo viewInfo) : base(viewInfo)

{

}

public override Type RowElementType => typeof(CustomGridNewRowElement);

}

the problem is im missing an rowheadercellelement as shown on attachment, i need the Add Button only fit on GridViewDataColumns like a standard GridViewNewRowInfo,

and shown on 2nd attachment it throw an exception when mouse right button press / contextmenu on Add Button Element, i couldnt find whats wrong.

any help please.

GridView

answered on 04 Feb 2020

5 answers

153 views

GetUnderlyingData is not a member of LocalDataSourceProvider

i'm using 2015 version and can't find GetUnderlyingData Method under LocalDataSourceProvider class.

receving error - "GetUnderlyingData is not a member of LocalDataSourceProvider ".

please help, how can i add it or how can i override it?

PivotGrid and PivotFieldList

answered on 04 Feb 2020

4 answers

253 views

Drag drop to item in ListView

Hi,

I have a solution where a user drags data into my application, onto a RadListView. The user drops the data on top of a RadListViewItem representing the subject to added the data to. I have added code for detecting which item that was dropped on (from Telerik documentation), but it always returns null from GetElementAtPoint. I have tried other Points (screen, control, client), but it's allways null.

The RadListView is unbound, in DetailView mode and have an icon and two columns. I don't know if that makes any difference in how this is handled.

private void radListView1_DragDrop(object sender, DragEventArgs e)

{

Point point = radListView1.PointToClient(new Point(e.X, e.Y));

BaseListViewVisualItem droppedItem = radListView1.ElementTree.GetElementAtPoint(point) as BaseListViewVisualItem;

if (droppedItem != null)

{

ListViewDataItem item = droppedItem.Data;

// handle dropped data here

}

I am using Telerik version 2014.1.226.40.

Best regards

Thomas

ListView

answered on 03 Feb 2020

1 answer

233 views

Drag drop operation from telerik grid to windows form treeview(nor telrik treeview,simple windows control)

Is it possible to drag a row from telerik grid to drop on windows form treeview control?

In my code i am able to drag the row from telerik grid but DragEnter event of windows form treeview control is not firing?

GridView

answered on 03 Feb 2020

10 answers

958 views

Arrange Child Windows in a MDI scenario

Hi!
I have a MDI Ribbon Form. I'm not using ribon merge. My child form open to different sizes. Client requires a single click Cascade sort operatin on all open child windows. How do I go about achieving this and also, is there a way to have a DropDownList control in the Ribbon to drop-list all open child windows?

Regards.

RibbonBar

answered on 03 Feb 2020

3 answers

442 views

Layout in 125% text size

Hi,

if you change PC's text size to 125% and run Demo Application, LayoutControl, Frist look - the layout is different then in 100% text size, also resizing works other way. Is it possible to make LayoutControl work same way in 100% and 125% text size?

Thanks,

Alex

LayoutControl