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POChanging object properties from within a try statement (C#)
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  1. POChanging object properties from within a try statement (C#)
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    copied!<p>I am attempting to make an image control be displayed after a port check is run.</p> <pre><code>namespace MonitorFlux { public partial class Form1 : Form { PortChecks PortCheckObject = new PortChecks(); public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { } public static void CheckHTTP() { string hostname = "google.com"; int portno = 80; IPAddress ipa = (IPAddress)Dns.GetHostAddresses(hostname)[0]; Form1 formobject = new Form1(); // Create new class object, so can call other methods in the class try { System.Net.Sockets.Socket sock = new System.Net.Sockets.Socket(System.Net.Sockets.AddressFamily.InterNetwork, System.Net.Sockets.SocketType.Stream, System.Net.Sockets.ProtocolType.Tcp); sock.Connect(ipa, portno); if (sock.Connected == true) // Port is in use and connection is successful { MessageBox.Show("Port is Open"); formobject.displayGreen(); } sock.Close(); } catch (System.Net.Sockets.SocketException ex) { if (ex.ErrorCode == 10061) // Port is unused and could not establish connection { formobject.displayRed(); MessageBox.Show("Port is Closed"); } else { MessageBox.Show(ex.Message); } } } public void displayGreen() { pictureBox2.Visible = false; pictureBox1.Visible = true; } private void displayRed() { pictureBox2.Visible = true; pictureBox1.Visible = false; } private void testCheck_Click(object sender, EventArgs e) { CheckHTTP(); // MessageBox.Show(PortCheckObject.httpport); } } } </code></pre> <p>It won't let me call a method from within the try clause e.g. displayRed()</p> <p>So I create an object of Form1 class to run the displayRed() method, although when the method runs it doesn't hide the image controls as expected. I assume this is because I have create another instance of the class. (If I run the method normally - not using an object, the image controls are hidden correctly.)</p> <p>So I guess my questions is how can I get around this issue?</p> <p>Please let me know if I have not explained the situation very well and I'll try my best to elaborate. Thanks</p>
 

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