Getting sub property names strongly typed

Question

With databinding objects to controls and grids I hated how the property names would be magic strings, so I created a very simple method as follows:

public st         


        

Answer 1

This is a modified version of something I might have found here on StackOVerflow:

public static class GetPropertyNameExtension
{
    public static string GetPropertyName(this Expression> propertyExpression)
    {
        return propertyExpression.Body.GetMemberExpression().GetPropertyName();
    }

    public static string GetPropertyName(this Expression> propertyExpression)
    {
        return propertyExpression.Body.GetMemberExpression().GetPropertyName();
    }

    public static string GetPropertyName(this MemberExpression memberExpression)
    {
        if (memberExpression == null)
        {
            return null;
        }

        if (memberExpression.Member.MemberType != MemberTypes.Property)
        {
            return null;
        }

        var child = memberExpression.Member.Name;
        var parent = GetPropertyName(memberExpression.Expression.GetMemberExpression());

        return parent == null ?
            child
            : parent + "." + child;
    }

    public static MemberExpression GetMemberExpression(this Expression expression)
    {
        if (expression is MemberExpression)
            return (MemberExpression)expression;

        if (expression is UnaryExpression)
            return (MemberExpression)((UnaryExpression)expression).Operand;

        return null;
    }
}