Questions on UI for WinForms Forum

1 answer

143 views

I am converting a large project from some 2012 controls to the latest version. All is going well, until I hit the treeview control.

On compile, I get this error.

Cannot implicitly convert type 'Telerik.WinControls.UI.RadTreeView.TreeViewEventHandler' to 'Telerik.WinControls.UI.TreeNodeCheckedEventHandler'

Not quite sure how to handle this.

here is the referenced line of code
this.monitorRadTreeView.NodeCheckedChanged += new Telerik.WinControls.UI.RadTreeView.TreeViewEventHandler(this.monitorRadTreeView_NodeCheckedChanged);

Treeview

answered on 11 Feb 2015

6 answers

449 views

WinForms versus WPF and future roadmap

I'm looking for a "best practices" guidance statement from Telerik regarding pros and cons of using WinForms versus WPF with regard to Telerik's future roadmap for continuing support and development of these control libraries.

Obviously, existing projects are most easily maintained in whichever format they were orginally designed and built. So the question here concerns selection of WinForms versus WPF for new projects only.

Starting a new project in WPF has the major advantage that it can be more easily converted to Silverlight. Are there any major advantages to starting a new project in WinForms? Are there any performance benefits for the WinForms Grid compared to the WPF Grid?

What are Telerik's "best practice" recommendations regarding these questions?

General Discussions

answered on 11 Feb 2015

3 answers

279 views

How to hide the shadow in a RadCalculatorDropDown

I'm trying to add a calculator to my project. I'm thinking that if I use a Rad Calculator DropDown with the popup opened inside an empty form it might work.

So far I have the form as you can see in the attached picture. I did hide the popup border using:

Me.RadCalculatorDropDown1.CalculatorElement.CalculatorContentElement.DrawBorder = False

I did also hide the arrow button but I can't figure out how to hide the shadow.
My other problem is that when I click the textbox the popup calculator it goes away

It would be nice that you provide a full calculator control.

CalculatorDropDown

answered on 11 Feb 2015

3 answers

174 views

[Solved] Autoscroll on docked MDI Child Forms

Hi,
I'm trying to use the dock functionality as MDI container, but has a problem when using autoscroll on child forms. So on resizing, scrolls are hidding or not showing correctly. I'm just wondering is there any specifity in use of autoscroll or there is some kind of problem that i'm seeing?
Regards,
Simeon

Dock

answered on 10 Feb 2015

5 answers

217 views

RadForm on dual screen monitor bleeding into next screen when maximized

I have a Main form that is maximized by default.
I changed the inheritance of my Main form to now inherit from RadForm.
Now when I open the Main form on my left monitor then the Main form has a small edge on the right that is bleeding into the left side of the right monitor.
See attachment for better explanation.

Form

answered on 10 Feb 2015

4 answers

1.8K+ views

Showing only Date (Not time) in a datetime column in a gridview.

Hi,

How do I format a datetime column in a radgridview control?

I want to show ONLY the date part of the variable.

I DID try removing it before entering it into the Grid, but then it just shows 12:00:00

I am guessing it has to do with DataEditFormatString or FormatString in the advanced settings for the column, but I've tried all kinds of strings with no luck.

Thanks
Johnny

GridView

answered on 10 Feb 2015

3 answers

232 views

Update property grid from other control.

My question is that is there any way i can get the property grid to reflect my changes that i make from another control. Right now it is working, but the only way i can see the change is when i set focus on the property grid. Is there any way i can force the property grid to update even when it has no focus, so that way as i can make changes to something is can see it been reflected in realtime in the property grid.

PropertyGrid

answered on 10 Feb 2015

1 answer

179 views

RAD Calendar

I am pretty new to RadCalendar.
How can I bind RadCalendar to a local database?
The aim is for the RadCalendar to show the Database inputs.

Any Help will be appreciated

Regards

Calendar, DateTimePicker, TimePicker and Clock

answered on 09 Feb 2015

1 answer

233 views

[Solved] Override Sort Issue

I am overriding my GetProperties() and Sort Methods of an objects PropertyDescriptorCollection in order to sort by index of a collection.

In the ms winforms propertyGrid this is displaying as expected, while in the Telerik radPropertyGrid it is not performing the same as the picture depicts.

Is there a reason this isn't compatible with the Telerik PropertyGrid?

Below is the code for the PropertyDescriptorCollection sort and GetProperties overrides:

class UserDataPropertyDescriptorCollection : PropertyDescriptorCollection

{

public UserDataPropertyDescriptorCollection(PropertyDescriptor[] propertyDescriptors)

: base(propertyDescriptors)

{

}

public override PropertyDescriptorCollection Sort()

{

PropertyDescriptorCollection ret = new PropertyDescriptorCollection(null);

return this;

}

public override PropertyDescriptorCollection Sort(string[] names)

{

return this;

}

public override PropertyDescriptorCollection Sort(string[] names, System.Collections.IComparer comparer)

{

return this;

}

public override PropertyDescriptorCollection Sort(System.Collections.IComparer comparer)

{

return this;

}

public class UserDataExpandableObjectConverter : ExpandableObjectConverter

{

public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes)

{

PropertyDescriptorCollection d = base.GetProperties(context, value, attributes);

List<PropertyDescriptor> props = new List<PropertyDescriptor>();

foreach (PropertyDescriptor f in d)

{

props.Add(f);

}

UserDataPropertyDescriptorCollection m = new UserDataPropertyDescriptorCollection(props.ToArray());

return m;

}

The object being displayed in the propertyGrid

public class alpha

{

private UserDataCollection usd;

private string test;

public alpha()

{

usd = new UserDataCollection();

test = "Fun";

}

[TypeConverterAttribute(typeof(UserDataExpandableObjectConverter))]

[Category("Collection")]

public UserDataCollection Collection

{

get { return usd; }

set { usd = value; }

}

[Category("String")]

public string Attr

{

get { return test; }

set { test = value; }

}

The form:

public Form1()

{

InitializeComponent();

UserDataCollection temp = new UserDataCollection();

alpha obj = new alpha();

//Inner test = new Inner();

for (int i = 0; i < 25; i++)

{

obj.Collection.Add("");

}

radPropertyGrid1.SelectedObject = obj;

}

The only difference between the two projects is the propertyGrid

PropertyGrid

answered on 09 Feb 2015

1 answer

169 views

CustomItem for property grid.

I am creating a new ItemElementType of CustomItem in the CreateItemElement of the property Grid. I override the CreatePropertyGridValueElement but then i notice that Data pointer is set to null, even though the Item is already create in the createItemElement of the property grid. So my question is that how do i get access to the PropertyGridItemBase object in the CreatePropertyGridValueElement since the only way to create the object it seems like you have to set the e.ItemElementType to a specific type you want to create using reflection.

Thanks.

Dock

answered on 06 Feb 2015