Questions on UI for WinForms Forum

1 answer

79 views

RadTreeView CustomControl loosing default Theme?

Hello!

I've build a CustomControl derived from RadTreeView and overwritten the Click method from the RadTreeView.
I want to use the default Telerik - Theme like in my other RadControls
Properties:
ThemeClassName: Telerik.WinControls.UI.*RadTreeView*,
ThemeName: ControlDefault or mostly string empty

When i use the CustomControl i loose all the default view settings of the RadTreeView.
Selection and Mouse Over etc. displayed as white.
Functionality works as expected.
I tried to copy the Telerik.WinControls.UI.RadTreeView to the ThemeClassName property of the Control.
But this doesn't work.
How can i use the default behaviour view of the RadTreeView in my CustomControl?

Thanks and kind regards

Treeview

answered on 21 Nov 2011

5 answers

274 views

Cannot add a new item with a grid datasource implementing IList<T>

We're using a custom collection to handle the modifications to the items bound to the RadGridView. Everything's working as expected for all but adding items. We've found out that the Telerik grid is using IList<T> data sources as IList, which means that our custom collection have to implement it as well, in order to respect our logic.

When the grid is trying to add a new item to the collection, the grid calls the IList.Add(object item) instead of IList<T>.Add(T item).

The error message displayed by the grid is "The collection is read-only."

We would expect the grid to determine the proper type of the collection in the data source.

Current version (without IList implementation):

public class EntityStateCollection<T> : IList<T> where T : new()

{

#region Membres

private List<EntityState<T>> _entityStates;

private Enumerator<T> _innerEnumerator;

public event EventHandler ItemAdded;

public event EventHandler ItemDeleted;

public event EventHandler ItemModified;

#endregion

#region Enumerator

[Serializable, StructLayout(LayoutKind.Sequential)]

public struct Enumerator<T> : IEnumerator<T>, IDisposable, IEnumerator where T : new()

{

private List<EntityState<T>> list;

private int index;

private T current;

internal Enumerator(List<EntityState<T>> list)

{

this.list = list;

this.index = 0;

this.current = default(T);

}

public void Dispose()

{

}

public bool MoveNext()

{

List<EntityState<T>> list = this.list;

if (this.index < list.Count)

{

this.current = list[this.index].InnerObject;

this.index++;

return true;

}

else

{

this.current = default(T);

return false;

}

public T Current

{

get

{

return this.current;

}

object IEnumerator.Current

{

get

{

return this.Current;

}

void IEnumerator.Reset()

{

this.index = 0;

this.current = default(T);

}

#endregion Enumerator

public EntityStateCollection()

{

_entityStates = new List<EntityState<T>>();

_innerEnumerator = new Enumerator<T>(_entityStates);

}

public void SetModified(T item)

{

EntityState<T> entity = _entityStates[this.IndexOf(item)];

if (entity.ObjectState != State.Added)

{

entity.ObjectState = State.Modified;

this.ItemModified(entity, null);

}

/// <summary>

/// Returns true if all T entities are at Current state.

/// </summary>

/// <returns></returns>

public bool IsInCurrentState()

{

for (int i = 0; i < _entityStates.Count; i++)

{

if (_entityStates[i].ObjectState != State.Current)

{

return false;

}

return true;

}

public EntityState<T> GetEntityState(int i)

{

return _entityStates[i];

}

/// <summary>

/// Add a list of T objects to the collection with the Current state

/// </summary>

/// <param name="lst"></param>

public void AddRange(List<T> lst)

{

foreach (T item in lst)

{

_entityStates.Add(new EntityState<T>(State.Current, item));

//this.ItemAdded(_entityStates[this.IndexOf(item)], null);

}

#region IList<T> Membres

public int IndexOf(T item)

{

int itemIndex = -1;

for (int i = 0; i < _entityStates.Count; i++)

{

if (_entityStates[i].InnerObject.Equals(item))

{

itemIndex = i;

break;

}

return itemIndex;

}

public void Insert(int index, T item)

{

_entityStates.Insert(index, new EntityState<T>(State.Added, item));

this.ItemAdded(_entityStates[index], null);

}

public void RemoveAt(int index)

{

_entityStates[index].ObjectState = State.Deleted;

this.ItemDeleted(_entityStates[index], null);

}

public T this[int index]

{

get

{

return _entityStates[index].InnerObject;

}

set

{

_entityStates[index].InnerObject = value;

}

#endregion

#region ICollection<T> Membres

public void Add(T item)

{

_entityStates.Add(new EntityState<T>(State.Added, item));

this.ItemAdded(_entityStates[this.IndexOf(item)], null);

}

public void Clear()

{

_entityStates.Clear();

}

public bool Contains(T item)

{

for (int i = 0; i < _entityStates.Count; i++)

{

if (_entityStates[i].InnerObject.Equals(item))

{

return true;

}

return false;

}

public void CopyTo(T[] array, int arrayIndex)

{

throw new NotImplementedException();

}

public int Count

{

get { return _entityStates.Count; }

}

public bool IsReadOnly

{

get { return false; }

}

public bool Remove(T item)

{

for (int i = 0; i < _entityStates.Count; i++)

{

if (_entityStates[i].InnerObject.Equals(item))

{

_entityStates[i].ObjectState = State.Deleted;

this.ItemDeleted(_entityStates[i], null);

return true;

}

return false;

}

#endregion

#region IEnumerable et IEnumerable<T> Membres

public IEnumerator<T> GetEnumerator()

{

return this._innerEnumerator;

}

IEnumerator IEnumerable.GetEnumerator()

{

return this._innerEnumerator;

}

#endregion

GridView

answered on 21 Nov 2011

2 answers

151 views

ExpressionFormattingObject Missing From latest build?

In your documentation it demonstrates the use of the ExpressionFormattingObject, but I am unable to find the object anywhere in the Telerik.Wincontrols.UI namespace. Also references are for the 2011.2.11.831 build which is when the documentation said that it was introduced.

Any help would be appreciated...

GridView

answered on 18 Nov 2011

3 answers

218 views

set default sort - multiple columns, some hidden

I have a scenario where the client wants to see "assigned" employees at the top of the list. An assigned employee has multiple criteria, some of which are based on visible columns, some invisible. I want this to always be the default sort and not allow the user to change it. I also don't want to see the arrows over the visible columns.

Any help would be appreciated!

GridView

answered on 18 Nov 2011

2 answers

175 views

Currency Mask Question

Hi all,

I'm using several MaskedTextBoxes and have the Mask property set to "C" for currency and the MaskType set to Numeric. This works fine however I cannot seem to enter a value higher than 9.99.

I have looked for a solution online but can only find how to change the number of decimal places "C3" for example.

Is this possible? Should I be using a custom Mask of some kind?

Regards,

Guy

MaskedEditBox

answered on 18 Nov 2011

3 answers

482 views

Form close issue

Hi,

i have a form with one button called next .when we click next it will invoke another instance of the same form ,so i want to close the old form before open the new instance of the form. i am unable to acheieve this. any suggestions on this issue will be helpful for me to solve this issue.

following is the code snippet which i used for the testing purpose of the above said scenario.

private void ra_Load(object sender, EventArgs e)

{

List<string> firstname = new List<string>();

firstname.Add("SAM");

firstname.Add("TAYLOR");

firstname.Add("ROSE");

GridViewDataRowInfo row;

for (int i = 0; i < firstname.Count; i++)

{

row = radGridView1.Rows.AddNew();

row.Cells[0].Value = firstname[i];

}

private void btnNext_Click(object sender, EventArgs e)

{

//this.Close();

ra newra = new ra();

newra.ShowDialog();

}

Regards,
Selva

Form

answered on 18 Nov 2011

3 answers

393 views

RibbonBar Problem with size

Hi mates,
When I try to insert into a chunk a horizontal radRibbonBarButtonGroup and a vertical radRibbonBarButtonGroup and both of these have Autosize set to false and the size property is set to a fixed size, and into these groups(radRibbonBarButtonGroup) I've added radButtonElements at design time, they also have fixed size (Width and Height), my controls (RadButtonElements and RadRibbonBarButtonGroups) sets automatically the size to 0,0 (and, of course, are disappeared) at Run Time.
I've verified in RadRibbonForm Designer code (the form that contain the RadRibbonBar), that there is no code of the size property of the controls.
Should I write the size manually into designer code? or is there another property that hide my controls (in advertently)?
Just to mention that RibbonBar will have 7 tabs with around 20 chunks.

RibbonBar

answered on 18 Nov 2011

2 answers

316 views

Dock.Fill in Radgridview

Anyone have ideas of why my dockstyle.fill is not working for radgridview inside a usercontrol (winforms). I place the usercontrol inside a form and the usercontrol fills, but the radgridview stays same size. Thanks

GridView

answered on 18 Nov 2011

5 answers

655 views

Clear Selected Items

What's the equivalent of

RadListBox.SelectedItems.Clear()

with the new control?

ListControl

answered on 17 Nov 2011

1 answer

130 views

Issue working with RadForm in MDI mode

Hi,

I'm working with RadForm in MDI Mode. I Just added a main form with IsMdiContainer = True and I added some children RadForm setting the properties MdiParent. I'm using Telerik WinForm Q2 2011.

ISSUE: When I maximize one Child RadForm, the "Maximize" icon in the top-right corner of the form doesn't change. Instead of the "Restore Down" icon, the RadForms shows always the "Maximize" icon. See the attached picture for a screenshot of this problem.

Thanks in advance,
Lorenzo

Form

answered on 17 Nov 2011