/// <summary>
/// Generate the route values which could have been mapped by the given route to give access to the (path of the) given data record
/// </summary>
/// <param name="route">route in routing table</param>
/// <param name="data">data record being tested if it could have been accessed via route</param>
/// <returns>route values that would have mapped to the path of the data record</returns>
private static RouteValueDictionary GenerateRouteValues(Route route, string path)
{
// Get all elements of path from data
List<string> pathEls = new List<string>();
if (!string.IsNullOrEmpty(path))
pathEls = path.Split(new char[] { '&' }, StringSplitOptions.RemoveEmptyEntries).ToList();
// Get all route values generated by route, with values if they are constant or null if variable
var allowedVals = route.AllowedValues();
RouteValueDictionary values = new RouteValueDictionary();
foreach (var allowedVal in allowedVals)
{
int idx = -1;
if (int.TryParse(allowedVal.Key.UpTo("-"), out idx)) // the route value matches a path element
{
if (idx < 0 || idx >= pathEls.Count)
return null;
if (allowedVal.Value != null && pathEls[idx] != (string)allowedVal.Value)
return null;
values.Add(allowedVal.Key, pathEls[idx]);
}
else // this should include 'controller' and 'action'
{
if (allowedVal.Value == null)
return null;
else
values.Add(allowedVal.Key, allowedVal.Value);
}
}
if (!(values.ContainsKey("controller") && values.ContainsKey("action")))
throw new Exception("Content mapping in routing table doesn't specify controller and action, route url = " + route.Url);
return values;
}