private static MethodInfo GetThen(Type typeSrc, Type typeResult, SortingDirection direction)
{
string name;
switch (direction)
{
case SortingDirection.Asc:
name = nameof(Queryable.ThenBy);
break;
case SortingDirection.Desc:
name = nameof(Queryable.ThenByDescending);
break;
default: throw new NotSupportedException(direction.ToString());
}
return(_methodDictionary2.GetOrAdd((name, typeSrc, typeResult, 2), MethodFactory));
}
/// <summary>
/// Send call to the server to open the stream if the connection is open and
/// unpaused; otherwise store the call to use when the connection is (re)established.
/// </summary>
/// <returns>Await <see cref="Task"/></returns>
protected async Task CallForDataStream()
{
//Need a dynamic object to properly format the json string
var filters = new ExpandoObject();
if (ColumnFilters != null && ColumnFilters.Any())
{
var filtersDict = (IDictionary <string, object>)filters;
foreach (var filter in ColumnFilters)
{
filtersDict.Add(filter.ColumnName, filter);
}
}
//Create the arg list to send to the sever
var args = new List <object>
{
ScrolledRowNumber,
ScrolledRowNumber + PageRowCount,
sortDirection.ToString().ToUpper(),
SortColumnName,
filters
};
var call = new ServerCall(currentId++, ordersStreamCall, args);
//If the connection is not in a ready state store the call for when it is; otherwise commit
if (connection.State != WebSocketState.Open || connection.IsUpdatePaused)
{
connection.StoreNextServerCall(call);
}
else
{
IsStreamPaused = true;
await connection.Send(call);
//Resume connection update but do not unpause stream until the next orders received event.
connection.ResumeUpdate();
}
}