January 01, 2003
Implementing a Plug-In Architecture in C#
January 2003/Implementing a Plug-In Architecture with C#
Listing 4: The method LoadPlugs
private void LoadPlugs()
{
string[] files = Directory.GetFiles("Plugs", "*.plug");
foreach(string f in files)
{
try
{
Assembly a = Assembly.LoadFrom(f);
System.Type[] types = a.GetTypes();
foreach(System.Type type in types)
{
if(type.GetInterface("IPlug")!=null)
{
if(type.GetCustomAttributes(typeof(PlugDisplayNameAttribute),
false).Length!=1)
throw new PlugNotValidException(type,
"PlugDisplayNameAttribute is not supported");
if(type.GetCustomAttributes(typeof(PlugDescriptionAttribute),
false).Length!=1)
throw new PlugNotValidException(type,
"PlugDescriptionAttribute is not supported");
_tree.Nodes.Add(new PlugTreeNode(type));
}
}
}
catch(Exception e)
{
MessageBox.Show(e.Message);
}
}
return;
}
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