wpf c# databinding on object
- by Enriquev
Hello, say I have this control:
public partial class bloc999 : UserControl
{
bloc999Data mainBlock = new bloc999Data();
public bloc999()
{
InitializeComponent();
mainBlock.txtContents = "100";
base.DataContext = mainBlock;
}
}
in the xaml:
<TextBox Margin="74,116,106,0" Name="txtContents"
Text="{Binding Path=txtContents, UpdateSourceTrigger=PropertyChanged,Mode = TwoWay}" />
<TextBox Margin="74,145,106,132" Name="txtContents2"
Text="{Binding Path=txtContents2, UpdateSourceTrigger=PropertyChanged,Mode = TwoWay}" />
Then I have this class:
public class bloc999Data : INotifyPropertyChanged
{
string _txtContents;
string _txtContents2;
public event PropertyChangedEventHandler PropertyChanged;
void NotifyPropertyChanged(string propName)
{
if (this.PropertyChanged != null)
this.PropertyChanged(
this, new PropertyChangedEventArgs(propName));
}
public string txtContents2
{
get
{
return this._txtContents2;
}
set
{
if (int.Parse(value) > int.Parse(this._txtContents))
{
this._txtContents2 = "000";
}
else
this._txtContents2 = value;
NotifyPropertyChanged("txtContents2");
}
}
public string txtContents
{
get
{
return this._txtContents;
}
set
{
this._txtContents = value;
NotifyPropertyChanged("txtContents");
}
}
}
Ok now say I have A button on the form and I do this in the code:
mainBlock.txtContents2 = "7777777";
It puts 000 in the textbox, but If i just type in manually, in the textbox (txtContents2, the setter code is called but for some reason the textboxes value does not change, the instance value does change. help?
