/// <summary>
/// Get a value typed property for the specified attribute name.
/// </summary>
/// <typeparam name="T">The return value type that should be returned.</typeparam>
/// <param name="properties">The properties to extract the value from.</param>
/// <param name="attributeName">The name of the attribute to get the property value for.</param>
/// <param name="index">The array index of the proeprty we want to return (all properties are multi-valued).</param>
/// <returns>The typed value of the property at the specified index if it can be found and cast, otherwise null/default.</returns>
public static T?GetValue <T>(this PropertyCollection properties, string attributeName, int index = 0) where T : struct
{
var result = new T?();
if (properties.Contains(attributeName) && properties[attributeName].Count >= index)
{
try
{
if (typeof(T) == typeof(Guid))
{
var guid = properties.GetReference <string>(attributeName, index);
result = (T)(object)new Guid(guid);
}
else
{
result = (T)properties[attributeName][index];
}
}
catch
{
// NOTE: Ignore the error in casting, we will return the default of T?.
}
}
return(result);
}
