public void CheckSubset()
{
// <Snippet1>
// Create a WebPermission.
WebPermission myWebPermission1 = new WebPermission();
// Allow Connect access to the specified URLs.
myWebPermission1.AddPermission(NetworkAccess.Connect, new Regex("http://www\\.contoso\\.com/.*",
RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline));
myWebPermission1.Demand();
// </Snippet1>
// Create another WebPermission with the specified URL.
WebPermission myWebPermission2 = new WebPermission(NetworkAccess.Connect, "http://www.contoso.com");
// Check whether all callers higher in the call stack have been granted the permission.
myWebPermission2.Demand();
// <Snippet2>
WebPermission myWebPermission3 = null;
// Check which permissions have the Connect access to more number of URLs.
if (myWebPermission2.IsSubsetOf(myWebPermission1))
{
Console.WriteLine("\n WebPermission2 is the Subset of WebPermission1\n");
myWebPermission3 = myWebPermission1;
}
else if (myWebPermission1.IsSubsetOf(myWebPermission2))
{
Console.WriteLine("\n WebPermission1 is the Subset of WebPermission2");
myWebPermission3 = myWebPermission2;
}
else
{
// Create the third permission.
myWebPermission3 = (WebPermission)myWebPermission1.Union(myWebPermission2);
}
// </Snippet2>
// Prints the attributes , values and childrens of XML encoded instances.
Console.WriteLine("\nAttributes and Values of third WebPermission instance are : ");
PrintKeysAndValues(myWebPermission3.ToXml().Attributes, myWebPermission3.ToXml().Children);
}
public static void myIsSubsetExample()
{
//<Snippet1>
// Create the target permission.
WebPermission targetPermission = new WebPermission();
targetPermission.AddPermission(NetworkAccess.Connect, new Regex("www\\.contoso\\.com/Public/.*"));
// Create the permission for a URI matching target.
WebPermission connectPermission = new WebPermission();
connectPermission.AddPermission(NetworkAccess.Connect, "www.contoso.com/Public/default.htm");
//The following statement prints true.
Console.WriteLine("Is the second URI a subset of the first one?: " + connectPermission.IsSubsetOf(targetPermission));
//</Snippet1>
}