/// <summary>
/// Returns element name.
/// returns empty string if value is null or Element.Name throws an exception.
/// </summary>
/// <param name="context">An ITypeDescriptorContext that provides a format context. </param>
/// <param name="culture">A CultureInfo. If null is passed, the current culture is assumed. </param>
/// <param name="value">The Object to convert. </param>
/// <param name="destinationType">The Type to convert the value parameter to. </param>
/// <returns>Converted string</returns>
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
if (destinationType == typeof(string))
{
if (value == null)
{
return(string.Empty);
}
ElementId elementId = value as ElementId;
if (elementId != null)
{
Element element = RevitStartInfo.GetElement(elementId);
if (element != null)
{
string elementName = string.Empty;
try
{
elementName = element.Name;
}
catch
{
}
return(elementName);
}
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
/// <summary>
/// Returns an element from a string contains its id
/// </summary>
/// <param name="context">An System.ComponentModel.ITypeDescriptorContext
/// that provides a format context.</param>
/// <param name="culture">An optional System.Globalization.CultureInfo.
/// If not supplied, the current culture is assumed.</param>
/// <param name="value">string to be converted to an element</param>
/// <returns>An element if the element exists, otherwise null</returns>
public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
string text = value as string;
if (!string.IsNullOrEmpty(text))
{
StandardValuesCollection svc = GetStandardValues(context);
foreach (ElementId elementId in svc)
{
Element element = RevitStartInfo.GetElement(elementId);
if (element.Name == text)
{
return(element.Id);
}
}
}
return(base.ConvertFrom(context, culture, value));
}