C# Using GetProperty for LINQ OrderBy using FileInfo

Question

I am trying to use the Reflection GetProperty to set the type of OrderBy I want dynamically. The orderByParam would have a value such as "Length", "Name", "CreationTime", etc. This will allow me to add the files to a list in the order I want later on. The error I am receiving is:

Object does not match target type

. What am I missing here?

try
{
    PropertyInfo propertyInfo = typeof(FileInfo).GetProperty(orderByParam);
    var files = Directory.GetFiles(strPath)
                         .OrderBy(f => propertyInfo.GetValue(orderByParam, null));  
                         //FileInfo(f).CreationTime))

    foreach (string str in files)
    {
        strFiles.Add(Path.GetFileName(str));
    }
}

Answer 1

Put it as

 PropertyInfo propertyInfo = typeof(FileInfo).GetProperty(orderByParam);

 var files = Directory
   .EnumerateFiles(strPath)
   .OrderBy(f => propertyInfo.GetValue(new FileInfo(f), null));  

Since you want property value being read from f (new FileInfo(f), to be exact), not orderByParam