WPF Addict

Set component in default namespace

13/09/2017 admin Aucun commentaire

If you want to use your own compenent you muste speicfy an xmlns:xxxx= » » in xaml
and use like this <xxx:myComponent …..
if you want to set your compenent on global or specific namespace
1- create a project
2– place component in this project
3– add this line in assemblyinfo.cs of this project
[assembly: XmlnsDefinition(« http://schemas.microsoft.com/winfx/2006/xaml/presentation », « UltimateCorp.Components »)]

explain
XmlnsDefinition(NameSpace to place, NameSpace to get)
NameSpace to place, is the namespace where the componenent are set
NameSPace to get, is the namespace where the compoment are initialy place

Sample
[assembly: XmlnsDefinition(« http://ultimatecorps.sytes.net », « UltimateCorp.Components »)]
[assembly: XmlnsDefinition(« http://ultimatecorps.sytes.net », « UltimateCorp.User »)]

and

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace UltimateCorp.User
{
    public class ColumnDefinitionExtended : ColumnDefinition

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

namespace UltimateCorp.User

{

public class ColumnDefinitionExtended : ColumnDefinition

Using

<Grid.ColumnDefinitions>
    <ColumnDefinitionExtended Width="25*"
                                Visible="{Binding ColVisible}" />
    <ColumnDefinitionExtended Width="5"
                                Visible="{Binding ColVisible}" />
    <ColumnDefinition Width="75*" />
</Grid.ColumnDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinitionExtended Width="25*"

Visible="{Binding ColVisible}" />

<ColumnDefinitionExtended Width="5"

Visible="{Binding ColVisible}" />

</Grid.ColumnDefinitions>

It is important to separate component in specific project

Categories: Non classé Tags:

ColumnDefinition visibility

13/09/2017 admin Aucun commentaire

To have visible Binding on ColumnDefinition (idem a RowDefinition) use this class

public class ColumnDefinitionExtended : ColumnDefinition
{
    // Variables
    public static DependencyProperty VisibleProperty;

    // Properties
    public Boolean Visible
    {
        get { return (Boolean)GetValue(VisibleProperty); }
        set { SetValue(VisibleProperty, value); }
    }

    // Constructors
    static ColumnDefinitionExtended()
    {
        VisibleProperty = DependencyProperty.Register("Visible",
            typeof(Boolean),
            typeof(ColumnDefinitionExtended),
            new PropertyMetadata(true, new PropertyChangedCallback(OnVisibleChanged)));

        ColumnDefinition.WidthProperty.OverrideMetadata(typeof(ColumnDefinitionExtended),
            new FrameworkPropertyMetadata(new GridLength(1, GridUnitType.Star), null,
                new CoerceValueCallback(CoerceWidth)));

        ColumnDefinition.MinWidthProperty.OverrideMetadata(typeof(ColumnDefinitionExtended),
            new FrameworkPropertyMetadata((Double)0, null,
                new CoerceValueCallback(CoerceMinWidth)));
    }

    // Get/Set
    public static void SetVisible(DependencyObject obj, Boolean nVisible)
    {
        obj.SetValue(VisibleProperty, nVisible);
    }
    public static Boolean GetVisible(DependencyObject obj)
    {
        return (Boolean)obj.GetValue(VisibleProperty);
    }

    static void OnVisibleChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
    {
        obj.CoerceValue(ColumnDefinition.WidthProperty);
        obj.CoerceValue(ColumnDefinition.MinWidthProperty);
    }
    static Object CoerceWidth(DependencyObject obj, Object nValue)
    {
        return (((ColumnDefinitionExtended)obj).Visible) ? nValue : new GridLength(0);
    }
    static Object CoerceMinWidth(DependencyObject obj, Object nValue)
    {
        return (((ColumnDefinitionExtended)obj).Visible) ? nValue : (Double)0;
    }
}

public class ColumnDefinitionExtended : ColumnDefinition

{

// Variables

public static DependencyProperty VisibleProperty;

// Properties

public Boolean Visible

{

get { return (Boolean)GetValue(VisibleProperty); }

set { SetValue(VisibleProperty, value); }

}

// Constructors

static ColumnDefinitionExtended()

{

VisibleProperty = DependencyProperty.Register("Visible",

typeof(Boolean),

typeof(ColumnDefinitionExtended),

new PropertyMetadata(true, new PropertyChangedCallback(OnVisibleChanged)));

ColumnDefinition.WidthProperty.OverrideMetadata(typeof(ColumnDefinitionExtended),

new FrameworkPropertyMetadata(new GridLength(1, GridUnitType.Star), null,

new CoerceValueCallback(CoerceWidth)));

ColumnDefinition.MinWidthProperty.OverrideMetadata(typeof(ColumnDefinitionExtended),

new FrameworkPropertyMetadata((Double)0, null,

new CoerceValueCallback(CoerceMinWidth)));

}

// Get/Set

public static void SetVisible(DependencyObject obj, Boolean nVisible)

{

obj.SetValue(VisibleProperty, nVisible);

}

public static Boolean GetVisible(DependencyObject obj)

{

return (Boolean)obj.GetValue(VisibleProperty);

}

static void OnVisibleChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)

{

obj.CoerceValue(ColumnDefinition.WidthProperty);

obj.CoerceValue(ColumnDefinition.MinWidthProperty);

}

static Object CoerceWidth(DependencyObject obj, Object nValue)

{

return (((ColumnDefinitionExtended)obj).Visible) ? nValue : new GridLength(0);

}

static Object CoerceMinWidth(DependencyObject obj, Object nValue)

{

return (((ColumnDefinitionExtended)obj).Visible) ? nValue : (Double)0;

}

and use like this

<Grid.ColumnDefinitions>
    <ColumnDefinitionExtended Width="25*"
                                Visible="{Binding ColVisible}" />
    <ColumnDefinitionExtended Width="5"
                                Visible="{Binding ColVisible}" />
    <ColumnDefinition Width="75*" />
</Grid.ColumnDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinitionExtended Width="25*"

Visible="{Binding ColVisible}" />

<ColumnDefinitionExtended Width="5"

Visible="{Binding ColVisible}" />

</Grid.ColumnDefinitions>

for binding to

#region ColVisible
private bool _ColVisible = true;
public bool ColVisible
{
    get { return _ColVisible; }
    set { _ColVisible = value; OnPropertyChanged("ColVisible"); }
}
#endregion

#region ColVisible

private bool _ColVisible = true;

public bool ColVisible

{

get { return _ColVisible; }

set { _ColVisible = value; OnPropertyChanged("ColVisible"); }

}

#endregion

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Set component in default namespace

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