C# PropertyGrid => How to change visible Properties at Runtime

Question

I have to following problem,

In a map-editor you can place \"Joints\" (FarseerPhysics) on objects, there are 23 types of joints (in an enum). The joints are all pretty m

Answer 1

Here is a method for changing the Browsable attribute of a property in your JointItem class:

private void ChangeBrowsability(object pThis, string pProperty, bool pBrowsable)
{
    PropertyDescriptor pdDescriptor = TypeDescriptor.GetProperties(pThis.GetType())[pProperty];
    BrowsableAttribute baAttribute = (BrowsableAttribute)pdDescriptor.Attributes[typeof(BrowsableAttribute)];
    FieldInfo fiBrowsable = baAttribute.GetType().GetField("browsable", BindingFlags.NonPublic | BindingFlags.Instance);
    fiBrowsable.SetValue(baAttribute, pBrowsable);
}

Then you could have a big long if then else sequence or the likes:

JointItem jiThis = WhereEverYouGetYourJointItemFrom();
if (jiThis.JointType == eJoinType.Elbow)
{
    ChangeBrowsability(jiThis, "JointAngle", true);
    ChangeBrowsability(jiThis, "MinAngle", true);
    ChangeBrowsability(jiThis, "MaxAngle", true);
    ChangeBrowsability(jiThis, "ScrewType", false);
    //...
}
else ...

Of course you need your dose of "using"s!

using System.ComponentModel;
using System.Reflection;