Questions on UI for WinForms Forum

1 answer

2.2K+ views

[Solved] How to hide some enum value on some conditions?

I have a class like,

enum ConstraintType
{
Horizental,
Vertial,
Slope,
Offset
}

class Constraint

{

ConstraintType First {get;set;}

ConstraintType Second {get;set;}

}

I know the enum will be dropdownlist on the propertygrid.

I hope the candidate enum values of Second is Slope and Offset when the First equals Vertical.

I want to know how to display limited enum value in dropdownlist according to some other property.

Thanks.

PropertyGrid

answered on 07 Feb 2020

1 answer

215 views

Customizing the control and adding features to it

Hi,

I have 2 questions about Image Editor:

1- I want to make the image which i open to fulfill the whole area, how?

2- I want to control the vertical menu width, how?

3- I want to add a button on top of the opened image, but I want to that the drawings to appear on top of the added button, how?

4- I want to add an entry to the menu (flag) where when clicking it it adds an flag png image to the image where i can drag/drop it and draw on top of it, any idea?

Thx

ImageEditor

answered on 07 Feb 2020

1 answer

980 views

Lazy load In RadGridView

Hi,
How to Implement Lazy load in RadGridView.
Waiting for your favorable response.
Thanks

GridView

answered on 07 Feb 2020

8 answers

412 views

Losing multiple selection on mouse right click

Hi,

I have a RadTreeView with MultiSelect = true. If I select more than one item in the tree and I right click the last selected item all items remain selected. If I right click any other of the selected items the current selection disappears and only the last clicked item is selected.

I'm using Telerik for WinForms Q2 2016.

You can test this behaviour with the WF Demo Application -> TreeView -> Selection

What can I do to keep the current selection?

Thanks in advance,

Peter

Treeview

answered on 07 Feb 2020

2 answers

114 views

I Want Custom Cell In Gridview

Hi,

I Want custom cell in RadGridview. For enter data and also arrow button to view popup like Figure 1.

I am looking forward to your reply.

Thanks.

Menu

answered on 07 Feb 2020

10 answers

461 views

[Solved] type RadGridViewExcelExporter is not defined

Hello,

When I try to instantiate a new RadGridViewExcelExporter I get a type is not defined error. I have the Interop assemblies referenced and imported as well as:

Imports Telerik.WinControls.Data
Imports Telerik.WinControls.UI.Export

Has the location of the Exporter changed since the documentation was written?

GridView

answered on 07 Feb 2020

11 answers

467 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

726 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

238 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