/// <summary>
/// Gets the value of the DataValue, or the specified default value.
/// </summary>
/// <typeparam name="T">The expected type.</typeparam>
/// <param name="dataValue">A DataValue</param>
/// <param name="defaultValue">A default value.</param>
/// <returns>The value if an instance of the specified Type, otherwise the specified default value.</returns>
public static T GetValueOrDefault <T>(this DataValue dataValue, T defaultValue)
{
var value = dataValue.GetValue();
if (value != null)
{
if (typeof(T).GetTypeInfo().IsAssignableFrom(value.GetType().GetTypeInfo()))
{
return((T)value);
}
}
return(defaultValue);
}
/// <summary>
/// Gets the value of the DataValue, or the specified default value.
/// </summary>
/// <typeparam name="T">The expected type.</typeparam>
/// <param name="dataValue">A DataValue</param>
/// <param name="defaultValue">A default value.</param>
/// <returns>The value, if an instance of the specified Type, otherwise the specified default value.</returns>
public static T GetValueOrDefault <T>(this DataValue dataValue, T defaultValue)
{
var value = dataValue.GetValue();
if (value != null)
{
if (value is T)
{
return((T)value);
}
}
return(defaultValue);
}
/// <summary>
/// Gets the value of the DataValue, or the type's default value.
/// </summary>
/// <param name="dataValue">A DataValue</param>
/// <param name="dataType">The expected type.</param>
/// <param name="defaultValue">A default value.</param>
/// <returns>The value if an instance of the specified Type, otherwise the specified default value.</returns>
public static object GetValueOrDefault(this DataValue dataValue, Type dataType, object defaultValue)
{
var value = dataValue.GetValue();
if (value != null)
{
if (dataType.GetTypeInfo().IsAssignableFrom(value.GetType().GetTypeInfo()))
{
return(value);
}
}
return(defaultValue);
}
public static T GetValueOrDefault <T>(this DataValue dataValue)
{
var value = dataValue.GetValue();
if (value != null)
{
if (value is T)
{
return((T)value);
}
}
// While [MaybeNull] attribute signals to the caller
// that the return value can be null. It is ignored
// by the compiler inside of the method, hence we
// have to use the bang operator.
return(default !);
/// <summary>
/// Gets the value of the DataValue, or the default value of the type.
/// </summary>
/// <param name="dataValue">A DataValue</param>
/// <param name="dataType">A data type.</param>
/// <returns>The value if an instance of the specified Type, otherwise the Type's default value.</returns>
public static object GetValueOrDefault(this DataValue dataValue, Type dataType)
{
var value = dataValue.GetValue();
if (value != null)
{
if (dataType.GetTypeInfo().IsAssignableFrom(value.GetType().GetTypeInfo()))
{
return(value);
}
}
if (dataType.GetTypeInfo().IsValueType)
{
return(Activator.CreateInstance(dataType));
}
else
{
return(null);
}
}
public override void Publish(DataValue dataValue)
{
this.Property.SetValue(this.Target, dataValue.GetValue());
base.Publish(dataValue);
}
public override void Publish(object target, DataValue dataValue)
{
this.Property.SetValue(target, dataValue.GetValue());
base.Publish(target, dataValue);
}
public override void Publish(DataValue dataValue)
{
this.Property.SetValue(this.Target, dataValue.GetValue());
this.SetDataErrorInfo(dataValue.StatusCode);
}