Multibinding generates “Cannot set MultiBinding because MultiValueConverter must be specified”
问题 I have a button with binding which works fine, see below: <Button x:Name="licenceFilterSet" Content="Search" Command="{Binding searchCommand}" CommandParameter="{Binding Path=Text, ElementName=licenseTextBox}" /> Now I have realized that I need yet another piece of information, so I need to send the value of a check-box as well. I modified the VM like this: <Button x:Name="licenceFilterSet" Content="Search" Command="{Binding licenseSearchCommand}"> <Button.CommandParameter> <MultiBinding