C # - select property value from child class

Question

I am returning a property value from a class object at runtime using reflection in C #.

    public bool GetValue(string fieldName, out object fieldValue)
    {
        // Get type of current record
        Type curentRecordType = _currentObject.GetType();
        PropertyInfo property = curentRecordType.GetProperty(fieldName);

        if (property != null)
        {
            fieldValue = property.GetValue(_currentObject, null).ToString();
            return true;
        }
        else
        {
            fieldValue = null;
            return false;
        }
    }

I pass the property name as a parameter: fieldName to this method. Now I need to access the property value from a child of the above class at runtime.
Can anyone out there point out how I can access the properties of an object of a child?

Answer 1

, , . , , , , .

static bool GetValue(object currentObject, string propName, out object value)
{
    // call helper function that keeps track of which objects we've seen before
    return GetValue(currentObject, propName, out value, new HashSet<object>());
}

static bool GetValue(object currentObject, string propName, out object value,
                     HashSet<object> searchedObjects)
{
    PropertyInfo propInfo = currentObject.GetType().GetProperty(propName);
    if (propInfo != null)
    {
        value = propInfo.GetValue(currentObject, null);
        return true;
    }
    // search child properties
    foreach (PropertyInfo propInfo2 in currentObject.GetType().GetProperties())
    {   // ignore indexed properties
        if (propInfo2.GetIndexParameters().Length == 0)
        {
            object newObject = propInfo2.GetValue(currentObject, null);
            if (newObject != null && searchedObjects.Add(newObject) &&
                GetValue(newObject, propName, out value, searchedObjects))
                return true;
        }
    }
    // property not found here
    value = null;
    return false;
}

, , , :

public bool GetValue(string pathName, out object fieldValue) 
{ 
    object currentObject = _currentObject;
    string[] fieldNames = pathName.Split(".");

    foreach (string fieldName in fieldNames)
    {
        // Get type of current record 
        Type curentRecordType = currentObject.GetType(); 
        PropertyInfo property = curentRecordType.GetProperty(fieldName); 

        if (property != null) 
        { 
            currentObject = property.GetValue(currentObject, null).ToString(); 
        } 
        else 
        { 
            fieldValue = null; 
            return false; 
        } 
    }
    fieldValue = currentObject;
    return true; 
} 

, GetValue("foo", out val), GetValue("foo.bar", out val).

Answer 2

, , .

Answer 3

public void Main(){
    var containerObject = new ContainerObject();
    object propertyValue;
    object nestedPropertyValue;
    if(GetValue(containerObject, "FirstPropertyName", out propertyValue){
       bool success = GetValue(propertyValue, "NestedPropertyName", out nestedPropertyValue);
    } 

}

public bool GetValue(object currentObject, string propertyName, out object propertyValue)
{
    // Get type of current record
    var currentObjectType = currentObject.GetType();
    PropertyInfo propertyInfo = currentObjectType.GetProperty(propertyName);

    propertyValue = propertyInfo != null 
                    ?  propertyInfo.GetValue(currentObject,null)
                    :  null;
    return propertyValue == null;
}