If you have a binding on a textbox with the UpdateSourceTrigger.PropertyChanged, which updates your datasource everytime the textproperty on the TextBox changes and you have a RaisedPropertyChanged on that Property, then your textbox gets really slow (during typing some text) if you have a lot of Text inside (over 1000 characters). Has someone a solution for that issue? I need to inform the GUI about the change from the datamodel. I use the MVVM pattern. I already tried to convert my Content Property into a dependency object -> same textbox typing lag. This issue confuses me, because this should be basic silverlight stuff??
cheers tobias
var binding = new Binding("Content");
binding.Mode = BindingMode.TwoWay;
binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
myTextBox.SetBinding(TextBox.TextProperty, binding);
private string m_content;
public string Content
{
get { return m_content; }
set
{
m_content = value;
//RaisePropertyChanged("Content");
}
}
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// Raises this object's PropertyChanged event.
/// </summary>
/// <param name="propertyName">The property that has a new value.</param>
protected void RaisePropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
var e = new PropertyChangedEventArgs(propertyName);
handler(this, e);
}
}