private void searchButton_Click(object sender, EventArgs e)
{
if (_currentPage == 0)
{
ShowResultsPage();
}
if (_searchCts != null)
{
Console.WriteLine("cancel");
_searchCts.Cancel();
}
_searchCts = new CancellationTokenSource();
_queryMethod.BeginInvoke(searchTb.Text, new AsyncCallback(new AsyncPoppulateSearch(_queryMethod, this, _searchCts).PopulateSearch), null);
}
/// <summary>
/// Query a whois server specifying the specified ServerCollection object and domain to query asynchronously.
/// </summary>
/// <param name="servers">Collection contening a list of whois server.</param>
/// <param name="domainToQuery">Domain to query.</param>
/// <param name="callBack">Callback function</param>
/// <returns>IAsyncResult object that represents the result of the QueryAsync operation.</returns>
/// <example>
/// <code>
/// [C#]
///
/// ServerCollection servers = new ServerCollection();
///
/// Server server1 = new Server();
/// server1.Host = "whois.networksolutions.com";
/// server1.Port = 43;
/// server1.Domain = ".com";
/// servers.Add(server1);
///
/// Server server2 = new Server();
/// server2.Host = "whois.nic.co.uk";
/// server2.Port = 43;
/// server2.Domain = ".co.uk";
/// servers.Add(server2);
///
/// WhoIs whoIs = new WhoIs();
/// IAsyncResult state = whoIs.QueryAsync(servers,"activeup.com",new AsyncCallback(MyCallbackWhoIs));
///
/// public void MyCallbackWhoIs(IAsyncResult state)
/// {
/// try
/// {
/// string result = whoIs.QueryAsyncResult(state);
/// Console.WriteLine(result);
/// }
///
/// catch(WhoisException we)
/// {
/// Console.WriteLine("WhoisException : " + we.Message);
/// }
///
/// catch(Exception ex)
/// {
/// Console.WriteLine("An unhandled exception was thrown : " + ex.Message);
/// }
/// }
///
/// [VB.NET]
///
/// Private whoIs As whoIs = New whoIs()
///
/// Dim servers As New ServerCollection()
///
/// Dim server1 As New Server()
/// server1.Host = "whois.networksolutions.com"
/// server1.Port = 43
/// server1.Domain = ".com"
/// servers.Add(server1)
///
/// Dim server2 As New Server()
/// server2.Host = "whois.nic.co.uk"
/// server2.Port = 43
/// server2.Domain = ".co.uk"
/// servers.Add(server2)
/// Dim state As IAsyncResult = whoIs.QueryAsync(servers, New AsyncCallback(AddressOf MyCallbackWhoIs))
///
/// Public Sub MyCallbackWhoIs(ByVal state As IAsyncResult)
///
/// Try
///
/// Dim result As String = whoIs.QueryAsyncResult(state)
/// Console.WriteLine(result)
///
/// Catch we As WhoisException
/// Console.WriteLine("WhoisException : " + we.Message)
///
/// Catch ex As Exception
/// Console.WriteLine("An unhandled exception was thrown : " + ex.Message)
///
/// End Try
///
/// End Sub
/// </code>
/// </example>
public IAsyncResult QueryAsync(ServerCollection servers, string domainToQuery,AsyncCallback callBack)
{
_queryDelegate = new QueryDelegate(_Query);
return _queryDelegate.BeginInvoke(servers,domainToQuery,false,callBack,null);
}
/// <summary>
/// Query a whois server specifying the specified host, port and domain to query asynchronously.
/// </summary>
/// <param name="host">Host of the whois server.</param>
/// <param name="port">Port of the whois server.</param>
/// <param name="domainToQuery">Domain to query.</param>
/// <param name="callBack">Callback function.</param>
/// <returns>IAsyncResult object that represents the result of the QueryAsync operation.</returns>
/// <example>
/// <code>
/// [C#]
///
/// WhoIs whoIs = new WhoIs();
/// IAsyncResult state = whoIs.QueryAsync("whois.networksolutions.com",43,"activeup.com",new AsyncCallback(MyCallbackWhoIs));
///
/// public void MyCallbackWhoIs(IAsyncResult state)
/// {
/// try
/// {
/// string result = whoIs.QueryAsyncResult(state);
/// Console.WriteLine(result);
/// }
///
/// catch(WhoisException we)
/// {
/// Console.WriteLine("WhoisException : " + we.Message);
/// }
///
/// catch(Exception ex)
/// {
/// Console.WriteLine("An unhandled exception was thrown : " + ex.Message);
/// }
/// }
///
/// [VB.NET]
///
/// Private whoIs As whoIs = New whoIs()
/// Dim state As IAsyncResult = whoIs.QueryAsync("whois.networksolutions.com",43,"activeup.com", New AsyncCallback(AddressOf MyCallbackWhoIs))
///
/// Public Sub MyCallbackWhoIs(ByVal state As IAsyncResult)
///
/// Try
///
/// Dim result As String = whoIs.QueryAsyncResult(state)
/// Console.WriteLine(result)
///
/// Catch we As WhoisException
/// Console.WriteLine("WhoisException : " + we.Message)
///
/// Catch ex As Exception
/// Console.WriteLine("An unhandled exception was thrown : " + ex.Message)
///
/// End Try
///
/// End Sub
/// </code>
/// </example>
public IAsyncResult QueryAsync(string host, int port, string domainToQuery,AsyncCallback callBack)
{
ServerCollection servers = new ServerCollection();
servers.Add(new Server(host,port));
_queryDelegate = new QueryDelegate(_Query);
return _queryDelegate.BeginInvoke(servers,domainToQuery,false,callBack,null);
}
/// <summary>
/// Query a whois server specifying the specified domain to query asynchronously. In this case, it uses the default whois servers.
/// </summary>
/// <param name="domainToQuery">Domain to query.</param>
/// <param name="callBack">Callback function.</param>
/// <returns>IAsyncResult object that represents the result of the QueryAsync operation.</returns>
/// <example>
/// <code>
/// [C#]
///
/// WhoIs whoIs = new WhoIs();
/// IAsyncResult state = whoIs.QueryAsync("activeup.com",new AsyncCallback(MyCallbackWhoIs));
///
/// public void MyCallbackWhoIs(IAsyncResult state)
/// {
/// try
/// {
/// string result = whoIs.QueryAsyncResult(state);
/// Console.WriteLine(result);
/// }
///
/// catch(WhoisException we)
/// {
/// Console.WriteLine("WhoisException : " + we.Message);
/// }
///
/// catch(Exception ex)
/// {
/// Console.WriteLine("An unhandled exception was thrown : " + ex.Message);
/// }
/// }
///
/// [VB.NET]
///
/// Private whoIs As whoIs = New whoIs()
/// Dim state As IAsyncResult = whoIs.QueryAsync("activeup.com", New AsyncCallback(AddressOf MyCallbackWhoIs))
///
/// Public Sub MyCallbackWhoIs(ByVal state As IAsyncResult)
///
/// Try
///
/// Dim result As String = whoIs.QueryAsyncResult(state)
/// Console.WriteLine(result)
///
/// Catch we As WhoisException
/// Console.WriteLine("WhoisException : " + we.Message)
///
/// Catch ex As Exception
/// Console.WriteLine("An unhandled exception was thrown : " + ex.Message)
///
/// End Try
///
/// End Sub
/// </code>
/// </example>
public IAsyncResult QueryAsync(string domainToQuery,AsyncCallback callBack)
{
_queryDelegate = new QueryDelegate(_Query);
return _queryDelegate.BeginInvoke(null,domainToQuery,false,callBack,null);
}
