Question

I implemented a textbox and it have to become visible when a checkbox is’nt checked and vica versa.
Here is my view:

 <TextBox Visibility="{Binding VisiMaxTime}" Height="23" HorizontalAlignment="Left" Margin="165,36,0,0" Text="{Binding Path=MaxTime,UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}" VerticalAlignment="Top" Width="75" />
 <CheckBox IsChecked="{Binding MaxTimeIsChecked}" Content="Geen" FontWeight="Bold" Height="16" HorizontalAlignment="Left" Margin="104,39,0,0" Name="checkBox1" VerticalAlignment="Top" />

And this is my viewmodel:

public bool MaxTimeIsChecked
        {
            get { return maxTimeIsChecked; }
            set
            {
                maxTimeIsChecked = value;
                if (maxTimeIsChecked == true)
                {
                    VisiMaxTime = Visibility.Hidden;
                    this.Examination.MaxTime = 0;
                }

                else
                VisiMaxTime = Visibility.Visible;
                OnPropertyChanged("MaxTimeIsChecked");
            }
        }



private Visibility visiMaxTime;
        public Visibility VisiMaxTime
        {
            get { return visiMaxTime; }
            set
            {
                visiMaxTime = value;
                OnPropertyChanged("VisiMaxTime");
            }
        }    

So i think this is good, this works in usercontrols but now i am working in a window. If i set a breakpoint in the setters of Visibility, it works fine, but the textbox just does’nt become visible? Does somebody know what i am doing wrong?

Thanks

Answer 1

if the visiblity of the textbox depends on Checkbox, why not bind to that directly?

 <TextBox Visibility="{Binding ElementName=checkBox1,Path=IsChecked,Converter=BooleanToVisibilityConverter}" />

you will need to use BooleanToVisibilityConverter to convert Bool to Visiblity