How to resolve bound object from bindingexpression with WPF?

Question

Hi does anyone know if there are any inbuilt classes for resolving a bound object from a bindingexpression and it\'s DataItem and property path?

I\'m attempting to w

Answer 1

Below is a quick implementation for an extension method that will do just what you are looking for. I couldn't find anything related to this either. The method below will always return null if for some reason the value cannot be found. The method won't work when the path includes []. I hope this helps!

public static T GetValue(this BindingExpression expression, object dataItem)            
{
    if (expression == null || dataItem == null)
    {
        return default(T);
    }

    string bindingPath = expression.ParentBinding.Path.Path;
    string[] properties = bindingPath.Split('.');

    object currentObject = dataItem;
    Type currentType = null;

    for (int i = 0; i < properties.Length; i++)
    {
        currentType = currentObject.GetType();                
        PropertyInfo property = currentType.GetProperty(properties[i]);
        if (property == null)
        {                    
            currentObject = null;
            break;
        }
        currentObject = property.GetValue(currentObject, null);
        if (currentObject == null)
        {
            break;
        }
    }

    return (T)currentObject;
}