CODEWITHSUNDEEP
c#wpfprism
Guruprasad J Rao
Guruprasad J Rao

Reputation: 29683

Cannot set multibinding because multivalue converter must be specified wpf

Ok, I have got into below way after following these 2 posts [Post 1, Post 2] regarding the question. But this issue is blowing my heads out even after following right ways of implemeting.

So here is my converter which is added in ViewModels directory of project:

public class ChangePasswordConverter : IMultiValueConverter
{
    public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
    {
        return ....
    }

    public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

Now below is my HomeWindow.xaml

<Controls:MetroWindow x:Class="KEOffice.Views.HomeWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
    xmlns:v="clr-namespace:KEOffice.Views"
    xmlns:vm="clr-namespace:KEOffice.ViewModels"
    xmlns:prism="http://prismlibrary.com/"
    prism:ViewModelLocator.AutoWireViewModel="True">

    <Window.Resources>
        <vm:ChangePasswordConverter x:Key="ChangePasswordConverter" />
    </Window.Resources>
    <!--But when I try to do this-->
    <Button Command="{Binding ChangePassword.UpdatePassword}">
           <Button.CommandParameter>
               <MultiBinding ConverterParameter="{StaticResource ChangePasswordConverter}">
                   <Binding Path="OldPass" ElementName="OldPass"/>
                   <Binding Path="NewPass" ElementName="NewPass"/>
                   <Binding Path="ConfirmPass" ElementName="ConfirmPass"/>
               </MultiBinding>
          </Button.CommandParameter>
    </Button>
</Controls:MetroWindow>

Even though I have given proper reference to viewmodels, where converter exists and Specified valid StaticResource it throws Cannot set multibinding because multivalue converter must be specified. I have also done rebuild, clean-rebuild etc., but still the same issue. What else I need to take care to make this work properly?

Upvotes: 0

Views: 2355

Answers (1)

SledgeHammer
SledgeHammer

Reputation: 7726

You don't use ConverterParameter to specify the converter, you use Converter.

Upvotes: 1

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