Passing an enum value as command parameter from XAML

问题

I want to pass an enum value as command parameter in WPF, using something like this:

<Button 
    x:Name="uxSearchButton" 
    Command="{Binding Path=SearchMembersCommand}" 
    CommandParameter="SearchPageType.First"
    Content="Search">
</Button>

SearchPageType is an enum and this is to know from which button search command is invoked.

Is this possible in WPF, or how can you pass an enum value as command parameter?

回答1:

Try this

<Button CommandParameter="{x:Static local:SearchPageType.First}" .../>

local - is your namespace reference in the XAML

回答2:

Also remember that if your enum is inside another class you need to use the + operator.

<Button CommandParameter="{x:Static local:MyOuterType+SearchPageType.First}".../>

回答3:

You can use property element syntax instead of attribute syntax for this:

<Button x:Name="uxSearchButton"
        Command="{Binding Path=SearchMembersCommand}"
        Content="Search">
    <Button.CommandParameter>
        <SearchPageType>First</SearchPageType>
    </Button.CommandParameter>
</Button>

回答4:

Also if you want to provide a [Flags] enum you can use the property element syntax:

<Button>
  <Button.CommandParameter>
    <SearchPageType>First,Second</SearchPageType>
  <Button.CommandParameter>
</Button>

来源：https://stackoverflow.com/questions/359699/passing-an-enum-value-as-command-parameter-from-xaml