具有属性的对象反射问题

Question

I got the following situation, I have an object class having multiple properties.
This object is going to be used more than once for reporting purposes, however not all properties are needed, hence I was thinking of using attributes and reflection in order to be able to get the desired properties (for display binding purposes) when needed (instead of hardcoding which fields to use). I would like to use attributes and reflection in order to get the following functionality

What I had in mind is the following: - On each property set the DisplayName attribute (so far so good) - Set a custom property (Example: useInReport1,useInReport2.... which will be a boolean on each property)

I would like to know how I am able to achieve the custom properties [useInReport1], [useInReport2] etc.... + retrieve the fields needed only

Example of my object:

public class ReportObject
{
[DisplayName("Identity")]
[ReportUsage(Report1=true,Report2=true)]
 public int ID {get {return _id;}
[DisplayName("Income (Euros)")]
[ReportUsage(Report1=true,Report2=false)]
 public decimal Income {get {return _income;}
[DisplayName("Cost (Euros)")]
[ReportUsage(Report1=true,Report2=false)]
 public decimal Cost {get {return _cost;}
[DisplayName("Profit (Euros)")]
[ReportUsage(Report1=true,Report2=true)]
 public decimal Profit {get {return _profit;}
[DisplayName("Sales")]
[ReportUsage(Report1=false,Report2=true)]
 public int NumberOfSales {get {return _salesCount;}
[DisplayName("Unique Clients")]
[ReportUsage(Report1=false,Report2=true)]
 public int NumberOfDifferentClients {get {return _clientsCount;}
}

[System.AttributeUsage(AttributeTargets.Property,AllowMultiple=true)]
public class ReportUsage : Attribute

{
    private bool _report1;
    private bool _report2;
    private bool _report3;

    public bool Report1
    {
        get { return _report1; }
        set { _report1 = value; }
    }
    public bool Report2
    {
        get { return _report2; }
        set { _report2 = value; }
    }

}

Rephrasing Question: how am I to get a list of properties by using the custom attribute example: get all properties which are taged as Report1 = true in order to read their value etc...

Answer 1

        //Get all propertyes of class
        var allProperties = typeof(ReportObject).GetProperties();

        //List that will contain all properties used in specific report
        List<PropertyInfo> filteredProperties = new List<PropertyInfo>();

        foreach(PropertyInfo propertyInfo in allProperties) {
            ReportUsage attribute = propertyInfo.GetCustomAttribute(typeof(ReportUsage), true) as ReportUsage;
            if(attribute != null && attribute.ReportUsage1) { //if you need properties for report1
                filteredProperties.Add(propertyInfo);
            }
        }