/// <summary>
/// Look for this table's primary key in the route values (i.e. typically the query string).
/// If they're all found, return a DataKey containing the primary key values. Otherwise return null.
/// </summary>
public DataKey GetDataKeyFromRoute()
{
var queryStringKeys = new OrderedDictionary(PrimaryKeyNames.Length);
foreach (MetaColumn key in PrimaryKeyColumns)
{
// Try to find the PK in the route values. If any PK is not found, return null
string value = Misc.GetRouteValue(key.Name);
if (string.IsNullOrEmpty(value))
{
return(null);
}
queryStringKeys[key.Name] = Misc.ChangeType(value, key.ColumnType);
}
return(new DataKey(queryStringKeys, PrimaryKeyNames));
}
