/// <summary>
/// Modifies the source data before passing it to the target for display in the UI.
/// </summary>
/// <param name="value">The source data being passed to the target.</param>
/// <param name="targetType">The <see cref="Type"/> of data expected by the target dependency property.</param>
/// <param name="parameter">An optional parameter to be used in the converter logic.</param>
/// <param name="culture">The culture of the conversion.</param>
/// <returns>The value to be passed to the target dependency property.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null)
{
return(null);
}
object result = null;
Type resourceType = value.GetType();
// Simplest cases: The target type is object or same as the input.
if (targetType.Equals(typeof(System.Object)) || resourceType.Equals(targetType))
{
return(value);
}
// Register missing type converters - this class will do this only once per appdomain.
RegisterMissingTypeConverters.Register();
// Is the type already known?
if (!TypeConverters.ContainsKey(targetType))
{
var c = TypeDescriptor.GetConverter(targetType);
if (targetType == typeof(Thickness))
{
c = new TypeConverters.ThicknessConverter();
}
// Get the type converter and store it in the dictionary (even if it is NULL).
TypeConverters.Add(targetType, c);
}
// Get the converter.
TypeConverter conv = TypeConverters[targetType];
// No converter or not convertable?
if ((conv == null) || !conv.CanConvertFrom(resourceType))
{
return(null);
}
// Finally, try to convert the value.
try
{
result = conv.ConvertFrom(value);
}
catch
{
result = null;
}
return(result);
}
/// <summary>
/// Modifies the source data before passing it to the target for display in the UI.
/// </summary>
/// <param name="value">The source data being passed to the target.</param>
/// <param name="targetType">The <see cref="Type"/> of data expected by the target dependency property.</param>
/// <param name="parameter">An optional parameter to be used in the converter logic.</param>
/// <param name="culture">The culture of the conversion.</param>
/// <returns>The value to be passed to the target dependency property.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null)
return null;
object result = null;
Type resourceType = value.GetType();
// Simplest cases: The target type is object or same as the input.
if (targetType.Equals(typeof(System.Object)) || resourceType.Equals(targetType))
return value;
// Register missing type converters - this class will do this only once per appdomain.
RegisterMissingTypeConverters.Register();
// Is the type already known?
if (!TypeConverters.ContainsKey(targetType))
{
var c = TypeDescriptor.GetConverter(targetType);
if (targetType == typeof(Thickness))
c = new TypeConverters.ThicknessConverter();
// Get the type converter and store it in the dictionary (even if it is NULL).
TypeConverters.Add(targetType, c);
}
// Get the converter.
TypeConverter conv = TypeConverters[targetType];
// No converter or not convertable?
if ((conv == null) || !conv.CanConvertFrom(resourceType))
return null;
// Finally, try to convert the value.
try
{
result = conv.ConvertFrom(value);
}
catch
{
result = null;
}
return result;
}
/// <summary>
/// Modifies the source data before passing it to the target for display in the UI.
/// </summary>
/// <param name="value">The source data being passed to the target.</param>
/// <param name="targetType">The <see cref="Type"/> of data expected by the target dependency property.</param>
/// <param name="parameter">An optional parameter to be used in the converter logic.</param>
/// <param name="culture">The culture of the conversion.</param>
/// <returns>The value to be passed to the target dependency property.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null)
return null;
object result = null;
Type resourceType = value.GetType();
// Simplest cases: The target type is object or same as the input.
if (targetType.Equals(typeof(System.Object)) || resourceType.Equals(targetType))
return value;
#if SILVERLIGHT
// Is the type already known?
if (!TypeConverters.ContainsKey(targetType))
{
if (typeof(Enum).IsAssignableFrom(targetType))
{
TypeConverters.Add(targetType, new TypeConverters.EnumConverter(targetType));
}
else
{
Type converterType = null;
var attributes = targetType.GetCustomAttributes(typeof(TypeConverterAttribute), false);
if (attributes.Length == 1)
{
var converterAttribute = (TypeConverterAttribute)attributes[0];
converterType = Type.GetType(converterAttribute.ConverterTypeName);
}
if (converterType == null)
{
// Find a suitable "common" converter.
if (targetType == typeof(double))
converterType = typeof(TypeConverters.DoubleConverter);
else if (targetType == typeof(Thickness))
converterType = typeof(TypeConverters.ThicknessConverter);
else if (targetType == typeof(Brush))
converterType = typeof(TypeConverters.BrushConverter);
else
return value;
}
// Get the type converter and store it in the dictionary (even if it is NULL).
TypeConverters.Add(targetType, Activator.CreateInstance(converterType) as TypeConverter);
}
}
#else
// Register missing type converters - this class will do this only once per appdomain.
RegisterMissingTypeConverters.Register();
// Is the type already known?
if (!TypeConverters.ContainsKey(targetType))
{
var c = TypeDescriptor.GetConverter(targetType);
if (targetType == typeof(Thickness))
c = new TypeConverters.ThicknessConverter();
// Get the type converter and store it in the dictionary (even if it is NULL).
TypeConverters.Add(targetType, c);
}
#endif
// Get the converter.
TypeConverter conv = TypeConverters[targetType];
// No converter or not convertable?
if ((conv == null) || !conv.CanConvertFrom(resourceType))
return null;
// Finally, try to convert the value.
try
{
result = conv.ConvertFrom(value);
}
catch
{
result = null;
}
return result;
}
/// <summary>
/// Modifies the source data before passing it to the target for display in the UI.
/// </summary>
/// <param name="value">The source data being passed to the target.</param>
/// <param name="targetType">The <see cref="Type"/> of data expected by the target dependency property.</param>
/// <param name="parameter">An optional parameter to be used in the converter logic.</param>
/// <param name="culture">The culture of the conversion.</param>
/// <returns>The value to be passed to the target dependency property.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null)
{
return(null);
}
object result = null;
Type resourceType = value.GetType();
// Simplest cases: The target type is object or same as the input.
if (targetType.Equals(typeof(System.Object)) || resourceType.Equals(targetType))
{
return(value);
}
#if SILVERLIGHT
// Is the type already known?
if (!TypeConverters.ContainsKey(targetType))
{
if (typeof(Enum).IsAssignableFrom(targetType))
{
TypeConverters.Add(targetType, new TypeConverters.EnumConverter(targetType));
}
else
{
Type converterType = null;
var attributes = targetType.GetCustomAttributes(typeof(TypeConverterAttribute), false);
if (attributes.Length == 1)
{
var converterAttribute = (TypeConverterAttribute)attributes[0];
converterType = Type.GetType(converterAttribute.ConverterTypeName);
}
if (converterType == null)
{
// Find a suitable "common" converter.
if (targetType == typeof(double))
{
converterType = typeof(TypeConverters.DoubleConverter);
}
else if (targetType == typeof(Thickness))
{
converterType = typeof(TypeConverters.ThicknessConverter);
}
else if (targetType == typeof(Brush))
{
converterType = typeof(TypeConverters.BrushConverter);
}
else
{
return(value);
}
}
// Get the type converter and store it in the dictionary (even if it is NULL).
TypeConverters.Add(targetType, Activator.CreateInstance(converterType) as TypeConverter);
}
}
#else
// Register missing type converters - this class will do this only once per appdomain.
RegisterMissingTypeConverters.Register();
// Is the type already known?
if (!TypeConverters.ContainsKey(targetType))
{
var c = TypeDescriptor.GetConverter(targetType);
if (targetType == typeof(Thickness))
{
c = new TypeConverters.ThicknessConverter();
}
// Get the type converter and store it in the dictionary (even if it is NULL).
TypeConverters.Add(targetType, c);
}
#endif
// Get the converter.
TypeConverter conv = TypeConverters[targetType];
// No converter or not convertable?
if ((conv == null) || !conv.CanConvertFrom(resourceType))
{
return(null);
}
// Finally, try to convert the value.
try
{
result = conv.ConvertFrom(value);
}
catch
{
result = null;
}
return(result);
}
