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New Post: Ribbon Mini Toolbar

quimbs — Sat, 21 Nov 2009 18:51:47 GMT

Does the current version of the library support Mini Toolbars like in Office 2007?

New Post: Check if row in RowEditEnding event is just added

radox — Sat, 21 Nov 2009 15:11:32 GMT

Sorry I solved,

the correct event is InitializeNewItem.

New Post: Check if row in RowEditEnding event is just added

radox — Sat, 21 Nov 2009 14:21:08 GMT

I have a WPF datagrid binded with LINQ.

I want to add rows in the datagrid and I created an handler for RowEditEnding event, but I don't know how to check if the row of the event has been added or not.
Since I have to know if I have to call insertOnSubmit() method for adding the row item to my datacontext, I must check someway if the row edited was new or not... Is there some method to perform this??

Thank you

New Post: scroll to data with keyboard letters like ListBox

rarmstrong — Sat, 21 Nov 2009 01:27:16 GMT

Hi Dan,

The only way I can quickly think to do this, is to do it in the keypress event, then run through the list to find the index of the item that StartsWith and scroll that item into view. I am assuming you use a generic list for the ItemsSource?

private void DGKeyPressed(object sender, KeyEventArgs e){
DataGrid dg = sender as DataGrid;
foreach(obj in dg.Items){
    if(obj.propToTest.ToUpper().StartsWith(e.Key.ToString()){
      dg.ScrollIntoView(obj);
      break;
    }
}
}

Havent tried it, but it should work

Ron

}

New Post: How to get the last item of a WPF Datagrid

rarmstrong — Sat, 21 Nov 2009 01:00:52 GMT

Hi,

To get the index of the last item in the grid: int lastIdx = myDataGrid.Items.Count - 1;

To get the last item, depending on how the datagrid is bound, (mine is to a list of business objects)

myObject gridItem = myDataGrid.Items[lastIdx] as myObject;

That should do it

Ron

New Post: Unable to set to child properties in DataGridColumn.Binding

rarmstrong — Sat, 21 Nov 2009 00:39:05 GMT

Try this...

<tk:DataGridTextColumn Binding="{Binding Path=Person.Address.Zip}" />

New Post: Unable to set to child properties in DataGridColumn.Binding

rarmstrong — Sat, 21 Nov 2009 00:39:02 GMT

Try this...

<tk:DataGridTextColumn Binding="{Binding Path=Person.Address.Zip}" />

New Post: partial class -- why?

jama — Fri, 20 Nov 2009 17:45:32 GMT

I think the reason is that a user of the toolkit can extend the Calendar class with code while seperating the toolkit code from the custom code.

New Post: Where Dependency Property Value is stored?

jama — Fri, 20 Nov 2009 17:13:01 GMT

I created the Person class at the end of this post with LastNameProperty dp and I changed its value as follows.

public partial class Window1 : Window

{
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            this.SetValue(Person.LastNameProperty, "Doe"); // Window object sets dp, no callback called
            MessageBox.Show(this.GetValue(Person.LastNameProperty).ToString()); //shows Doe

            Person person = new Person();
            person.SetValue(Person.LastNameProperty, "Smith"); //Person object sets dp, callback called
            MessageBox.Show(this.GetValue(Person.LastNameProperty).ToString()); // Shows Smith
        }

}

I have no problem undestanding the Person object's use of the dp but my problem is the Windows objec.

Where the Window object stores Person.LastNameProperty dp? {this.SetValue(Person.LastNameProperty, "Doe");}

Why when the Window object sets the value the callback registed with the property declation not called?

Are any relation of dp property set by the declaring object(Person) and the one set by the Windows object?

Thanks

public class Person : DependencyObject
{

public static readonly DependencyProperty LastNameProperty =
DependencyProperty.Register("LastName", typeof(string), typeof(Person), new PropertyMetadata("No Name", LastNameChangedCallback));

        private static void LastNameChangedCallback(DependencyObject obj, DependencyPropertyChangedEventArgs e)
        {
            Person p = obj as Person;
            MessageBox.Show ( e.NewValue.ToString());
        }

        public string LastName
        {
            get
            {
                return (string)GetValue(LastNameProperty);
            }
            set
            {
                SetValue(LastNameProperty, value);
            }
        }
    }

New Post: Where Dependency Property Value is stored?

jama — Fri, 20 Nov 2009 17:13:01 GMT

I created the Person class at the end of this post with LastNameProperty dp and I changed its value as follows.

public partial class Window1 : Window

}

I have no problem undestanding the Person object's use of the dp but my problem is the Windows objec.

Where the Window object stores Person.LastNameProperty dp? {this.SetValue(Person.LastNameProperty, "Doe");}

Why when the Window object sets the value the callback registed with the property declation not called?

Are any relation of dp property set by the declaring object(Person) and the one set by the Windows object?

Thanks

public class Person : DependencyObject
{

public static readonly DependencyProperty LastNameProperty =
DependencyProperty.Register("LastName", typeof(string), typeof(Person), new PropertyMetadata("No Name", LastNameChangedCallback));

New Post: Different usercontrols in the same datagrid column

bnovicewpf — Fri, 20 Nov 2009 17:11:15 GMT

Is it possible to have different usercontrols on different rows in the same datagrid column?

New Post: Different usercontrols in the same datagrid column

bnovicewpf — Fri, 20 Nov 2009 17:11:15 GMT

Is it possible to have different usercontrols on different rows in the same datagrid column?

New Post: [Datagrid] Override default keyboard management

DrQ — Fri, 20 Nov 2009 16:50:25 GMT

Hi,

I use Ctrl + Up, Ctrl + Left, .... shorcuts to act on a UserControl in the window KeyBinding.

But when the datagrid have the focus, these shortcuts are managed by the datagrid and not by the KeyBindings defined in the Window.

Is there a way to undo the datagrid KeyBinding management ?

Thanks

New Post: [Datagrid] Override default keyboard management

DrQ — Fri, 20 Nov 2009 16:50:25 GMT

Hi,

I use Ctrl + Up, Ctrl + Left, .... shorcuts to act on a UserControl in the window KeyBinding.

But when the datagrid have the focus, these shortcuts are managed by the datagrid and not by the KeyBindings defined in the Window.

Is there a way to undo the datagrid KeyBinding management ?

Thanks

New Post: partial class -- why?

AdrianAlexander — Fri, 20 Nov 2009 16:00:51 GMT

I'm building a reusable controls library for my company and have been using the WPF Toolkit as a model to follow for how to organise folders, theme styles, etc. One point I'm confused on is why certain control classes in the WPF Toolkit, such as Calendar and DatePicker -- are declared as partial? For example:

public partial class DatePicker : Control
{ ...

public partial class Calendar : Control
{ ...

These are not user controls, meaning they don't have a code-behind file, so what's the point?

New Post: Using Ribbon with MVVM?

lrr81765 — Fri, 20 Nov 2009 15:51:58 GMT

Thanks Seventeeth !

It was in fact an issue with the syntax. I was able to use this with the CompositeCommand. This was important because several modules needed to "play" with the command, and the original VM didn't need the dependicies.

<infrastructure:CommandReference x:Key="DivertCommandReference" Command="{x:Static infrastructure:MenuCommands.DivertCommand}" />


Allows me to simply use the static command like I do with other things.

New Post: Custom Control size not set Under Datagrid

SNEHAL14283 — Fri, 20 Nov 2009 12:47:11 GMT

    <dg:DataGrid AutoGenerateColumns="False"
                                 BorderThickness="1"
                                 BorderBrush="Black"
                                 Height="450"
                                 ItemsSource="{Binding Path=ObjItemType.ItemTypeDetails,
                                              Mode=Oneway}">

                     <dg:DataGridTemplateColumn Header="Account Name" Width="175" MinWidth="175"
                                HeaderStyle="{DynamicResource LeftAlignedColumnHeaderStyle}">
                                <dg:DataGridTemplateColumn.CellTemplate>
                                    <DataTemplate>
                                        <infra:LookupTextbox Style="{DynamicResource txtLookupEntry}"
                                                ObjectID="OBJ_ACCOUNT" Width="175"
                                                ReturnValue="{Binding Path=AccountCode ,
                                                        Mode=TwoWay,
                                                        UpdateSourceTrigger=LostFocus,
                                                        NotifyOnValidationError=True,
                                                        ValidatesOnDataErrors=True,
                                                        ValidatesOnExceptions=True}"/>
                                    </DataTemplate>
                                </dg:DataGridTemplateColumn.CellTemplate>
                            </dg:DataGridTemplateColumn>
                        </dg:DataGrid.Columns>
   </dg:DataGrid>

I have above code. data binding having no problem. but i given size of my user control Lookup textbox = 175 which is not taking. its autofit as per text on it. if there is no text then it will 0 size. how to solve this?

Thanks in advance

New Post: IsKeyboardFocusWithin property in DataGrid is always false

SergiDiaz — Fri, 20 Nov 2009 11:04:33 GMT

Now I feel like an idiot. I was setting DataGridCell.Focusable to false. No wonder they weren't catching the focus...

Nothing to see here ;).

-Sergi Díaz

New Post: IsKeyboardFocusWithin property in DataGrid is always false

SergiDiaz — Fri, 20 Nov 2009 11:00:52 GMT

Hello everybody.

I wanted to change my selected DataGridRow background when the focus is outside the DataGrid. This is the default convention used by ListBox, ListView and TreeView, a blue selection when the focus is inside the parent control and a gray one when it's outside of it.

Searching on the web, I found that most people use a trigger on DataGrid.IsKeyboardFocusWithin, so that when it's true you have the blue backgroun and when it's false the gray one.

So, I implemented that trigger, only to see that now my selection is always gray. The problem is that DataGrid.IsKeyboardFocusWithin is always false no matter how many times I click on it. I've even checked it using Snoop. I tried setting FocusManager.IsFocusScope to true to no avail. I even thought the problem could be that DataGrid.IsReadOnly is true, so I tried setting it to false to check what would happen, but I only received some errors on the debug console and it didn't fix anything.

What could be possibly happening?

Thanks,

-Sergi Díaz

New Post: Using Ribbon with MVVM?

Sevententh — Fri, 20 Nov 2009 10:31:02 GMT

Hi,

Your command call is wrong - Command="{Binding infrastructure:MenuCommands.DivertCommand}"

This should be property in your ViewModel - Command="{Binding DivertCommand}"

The viewmodel looks like:

public class ViewModel

private SimpleCommand divertCommand;


public ViewModel()
{
testCommand = new SimpleCommand
        {
            CanExecuteDelegate = x => true,
            ExecuteDelegate = x => ExecuteCommand()
        };
}

        public SimpleCommand DivertCommand
        {
            get { return divertCommand; }
        }

        private void ExecuteCommand()
        {
            DivertCommand.CommandSucceeded = false;

//Your code to execute

            DivertCommand.CommandSucceeded = true;
        }

I use SimpleCommand commandreference as used by Sacha Barber http://www.codeproject.com/KB/WPF/Cinch.aspx