Silverlight数据验证
1.验证TextBox内容不超过指定长度，失去焦点后验证。前台：
<TextBox Name="tb1" Text="{Binding Name,Mode=TwoWay,ValidatesOnExceptions=True}" Height="100" Width="100"/>
后台：
Person p = new Person();
public MainPage()
{
InitializeComponent();
p.Name = "123";
tb1.DataContext = p;
}
public class Person : INotifyPropertyChanged
{
private string name;
public string Name
{
get { return name; }
set
{
if (value.Length > 3)
{
throw new Exception("不能超过三个字!");
}
name = value;
NotifyChange("Name");
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyChange(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
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