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A191919
A191919

Reputation: 3442

WPF XAML pass to ConverterParameter array of enums

I have enum 

public enum DocumentTypes
{
    First, Second, Third, Fourth
}

How to pass values of enum to <sys:Enum></sys:Enum>

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApplication1.Converters"
xmlns:enums="clr-namespace:WpfApplication1.Enums"
xmlns:sys="clr-namespace:System;assembly=mscorlib"

       <Label Content="Test2">
            <Label.Visibility>
                <MultiBinding Converter="{StaticResource Converter}">
                    <MultiBinding.ConverterParameter>
                        <x:Array Type="{x:Type sys:Enum}">
                            <sys:Enum></sys:Enum>
                        </x:Array>
                    </MultiBinding.ConverterParameter>
                    <Binding ElementName="First" Path="IsChecked" />
                    <Binding ElementName="Second" Path="IsChecked" />
                    <Binding ElementName="Third" Path="IsChecked" />
                    <Binding ElementName="Fourth" Path="IsChecked" />
                </MultiBinding>
            </Label.Visibility>
        </Label>

Upvotes: 4

Views: 4770

Answers (3)

captainst
captainst

Reputation: 657

Try this:

<MultiBinding.ConverterParameter>
  <x:Array Type="{x:Type sys:Enum}">
    <x:Static Member="sys:Enum:YourEnumType.YourEnumValue1" />
    <x:Static Member="sys:Enum:YourEnumType.YourEnumValue2" />
  </x:Array>
</MultiBinding.ConverterParameter>

In my project, I have added my enumeration type namespace like:

xmlns:mod="clr-namespace:MyProject.Modal;assembly=MyProject.Modal"

where MyProject.Modal is the namespace of my enumeration definition. In this way, if you have an enumeration names "MyEnum", then you could do this:

<MultiBinding.ConverterParameter>
  <x:Array Type="{x:Type mod:MyEnum}">
    <x:Static Member="mod:MyEnum.Value1" />
    <x:Static Member="mod:MyEnum.Value2" />
  </x:Array>
</MultiBinding.ConverterParameter>

Reference: https://social.msdn.microsoft.com/Forums/vstudio/en-US/9db5f1f5-f3a9-402c-9869-08d3624eea59/xarray-markup-extension-as-itemssource-for-combobox?forum=wpf

Upvotes: 0

lhildebrandt
lhildebrandt

Reputation: 334

You can add a bindable Property to your datacontext like:

public IEnumerable DocumentTypesList
{
   get
   {
       return Enum.GetVaues(typeof(DocumentTypes));
   }
}

And bind to it via:

<MultiBinding.ConverterParameter>
                    <Binding Path="DocumentTypesList">
</MultiBinding.ConverterParameter>

This way, if your enum gets altered, you don´t have to change any XAML representation of it.

Or if the converter always uses this explicit enum, you could reference it directly in it.

Upvotes: 0

AnjumSKhan
AnjumSKhan

Reputation: 9827

Do this : 

    <x:Array Type="{x:Type sys:Enum}">
        <local:DocumentTypes>First</local:DocumentTypes>
        <local:DocumentTypes>Second</local:DocumentTypes>
        <local:DocumentTypes>Third</local:DocumentTypes>
    </x:Array>

Upvotes: 12

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