System.Web.UI.Page.DeterminePostBackMode C# (CSharp) Метод

	protected internal virtual NameValueCollection DeterminePostBackMode ()
	{
		// if request was transfered from other page such Transfer
		if (_context.IsProcessingInclude)
			return null;
		
		HttpRequest req = Request;
		if (req == null)
			return null;

		NameValueCollection coll = null;
		if (0 == String.Compare (Request.HttpMethod, "POST", true, Helpers.InvariantCulture))
			coll = req.Form;
		else {
			string query = Request.QueryStringRaw;
			if (query == null || query.Length == 0)
				return null;

			coll = req.QueryString;
		}

		WebROCollection c = (WebROCollection) coll;
		allow_load = !c.GotID;
		if (allow_load)
			c.ID = GetTypeHashCode ();
		else
			allow_load = (c.ID == GetTypeHashCode ());

		if (coll != null && coll ["__VIEWSTATE"] == null && coll ["__EVENTTARGET"] == null)
			return null;
		return coll;
	}