Add more error handling

RHLauncher.Helper/ServiceFileHandler.cs

@@ -19,6 +19,11 @@ namespace RHLauncher.RHLauncher.Helper
             string md5 = CalculateMD5(service);
 
             string serviceDatPath = Path.Combine(_installDirectory, "Service.dat");
+
+            try
+            {
+                if (File.Exists(serviceDatPath))
+                {
                     string[] lines = File.ReadAllLines(serviceDatPath);
 
                     string currentMd5 = lines[0];
@@ -30,6 +35,17 @@ namespace RHLauncher.RHLauncher.Helper
                         File.WriteAllLines(serviceDatPath, lines);
                     }
                 }
+                else
+                {
+                    MsgBoxForm.Show("Service.dat file does not exist. Please check if the Install Directory is correct.", LocalizedStrings.Error);
+                    return;
+                }
+            }
+            catch (Exception ex)
+            {
+                MsgBoxForm.Show("An error occurred while updating service: " + ex.Message, LocalizedStrings.Error);
+            }
+        }
 
         private static string CalculateMD5(string input)
         {

RHLauncher.LauncherForm/LauncherForm.cs

@@ -145,6 +145,11 @@ namespace RHLauncher
                         LaunchButton.Click -= LaunchGameButton_Click;
                         LaunchButton.Click += LaunchGameButton_Click;
                         break;
+                    case UpdateState.Error:
+                        LaunchButton.Text = LocalizedStrings.Launch;
+                        LaunchButton.Click -= LaunchGameButton_Click;
+                        LaunchButton.Click += LaunchGameButton_Click;
+                        break;
                 }
             }
             catch (Exception ex)

RHLauncher.RegForm/RegForm.cs

@@ -37,7 +37,7 @@ namespace RHLauncher
         private async Task<string> SendEmailRequestAsync()
         {
             using HttpClient client = new();
-            HttpResponseMessage response = await client.PostAsync(SendCodeUrl, new FormUrlEncodedContent(new[]
+            using HttpResponseMessage response = await client.PostAsync(SendCodeUrl, new FormUrlEncodedContent(new[]
             {
             new KeyValuePair<string, string>("email", EmailTextBox.Text),
 
@@ -99,7 +99,7 @@ namespace RHLauncher
         private async Task<string> VerifyCodeSendRequestAsync()
         {
             using HttpClient client = new();
-            HttpResponseMessage response = await client.PostAsync(VerifyCodeUrl, new FormUrlEncodedContent(new[]
+            using HttpResponseMessage response = await client.PostAsync(VerifyCodeUrl, new FormUrlEncodedContent(new[]
             {
             new KeyValuePair<string, string>("email", EmailTextBox.Text),
             new KeyValuePair<string, string>("verification_code", CodeTextBox.Text),
@@ -113,7 +113,7 @@ namespace RHLauncher
         private async Task<string> SendRequestAsync()
         {
             using HttpClient client = new();
-            HttpResponseMessage response = await client.PostAsync(RegisterUrl, new FormUrlEncodedContent(new[]
+            using HttpResponseMessage response = await client.PostAsync(RegisterUrl, new FormUrlEncodedContent(new[]
             {
             new KeyValuePair<string, string>("windyCode", NameTextBox.Text),
             new KeyValuePair<string, string>("email", EmailTextBox.Text),

RHLauncher/LauncherUpdater.cs

@@ -17,7 +17,7 @@ namespace RHLauncher
             try
             {
                 using HttpClient client = new();
-                HttpResponseMessage response = await client.GetAsync(LauncherVersionUrl);
+                using HttpResponseMessage response = await client.GetAsync(LauncherVersionUrl);
                 response.EnsureSuccessStatusCode();
                 string json = await response.Content.ReadAsStringAsync();
                 dynamic result = JsonConvert.DeserializeObject(json);