/// <summary>
/// Gets text to match with the query from an item.
/// Never null.
/// </summary>
/// <param name="item"/>
string TextFromItem(object item)
{
if (item == null)
{
return(string.Empty);
}
var d = new DependencyVariable <string>();
d.SetBinding(item, TextSearch.GetTextPath(this));
return(d.Value ?? string.Empty);
}
string TryGetSearch(object item)
{
string text = string.Empty;
var textPath = TextSearch.GetTextPath(this);
var propertyInfo = item.GetType().GetProperty(textPath);
if (propertyInfo != null)
{
text = propertyInfo.GetValue(item).ToString();
}
return(text);
}
// helper method to get display string representation for passed object
// uses TextSearch Path if set,
// else uses DisplayMemberPath if set,
// else uses ToString()
private string GetString(object item)
{
string path = TextSearch.GetTextPath(this);
if (string.IsNullOrEmpty(path))
{
path = DisplayMemberPath;
}
if (string.IsNullOrEmpty(path))
{
return(item.ToString());
}
// use reflection
object value = GetPropertyValue(item, path, BindingFlags.Public);
if (value != null)
{
return(value.ToString());
}
return(null);
}
