Fixed issue with QNH not refreshing properly.

Author: zizwiz

myFlightInfo/Form1.Designer.cs

@@ -97,7 +97,7 @@ private async void Form1_Load(object sender, EventArgs e)
             cmbobx_airport_info.Visible = false;
             cmbobx_gransden_lodge.Visible = false;
             grpbx_altimeter.Visible = false;
-            btn_calculate_altimiter.Visible = false;
+            btn_navigation_calculations.Visible = false;
 
             await webView_notams.EnsureCoreWebView2Async();
             await webView_browser.EnsureCoreWebView2Async();
@@ -232,7 +232,7 @@ private void btn_reset_Click(object sender, EventArgs e)
             }
         }
 
-        private void btn_calculate_altimiter_Click(object sender, EventArgs e)
+        private void btn_navigation_calculations_Click(object sender, EventArgs e)
         {
             //Calculate settings for altitude at destination
             /*
@@ -338,7 +338,7 @@ private void cmbobx_airport_info_SelectedIndexChanged(object sender, EventArgs e
                     if ((noInfoFlag) && (fromDataOK))
                     {
                         Navigate.SolarInfo(cmbobx_airport_info.Text, lstbx_navigation_to, year, month, day);
-                        btn_calculate_altimiter.Visible = true; //Now show button to calculate
+                        btn_navigation_calculations.Visible = true; //Now show button to calculate
                     }
 
                 }

myFlightInfo/Form1.cs

@@ -9,7 +9,7 @@ private void Form1_KeyDown(object sender, KeyEventArgs e)
         {
             if ((e.KeyCode == Keys.Enter) && ((tabcnt_toplevel.SelectedTab == tab_utils) && (tabcnt_utils.SelectedTab == tab_navigation)))
             {
-                btn_calculate_altimiter.PerformClick();
+                btn_navigation_calculations.PerformClick();
             }
             else if ((e.KeyCode == Keys.Enter) && ((tabcnt_toplevel.SelectedTab == tab_utils) && (tabcnt_utils.SelectedTab == tab_crosswind)))
             {
@@ -29,7 +29,7 @@ private void Navigation_Keydown(object sender, KeyEventArgs e)
         {
             if ((e.KeyCode == Keys.Enter) && ((tabcnt_toplevel.SelectedTab == tab_utils) && (tabcnt_utils.SelectedTab == tab_navigation)))
             {
-                btn_calculate_altimiter.PerformClick();
+                btn_navigation_calculations.PerformClick();
             }
         }
 

myFlightInfo/KeyDowns.cs

@@ -18,11 +18,23 @@ public static bool Calculate_altimeter(string present_pressure, string present_a
         {
             if (CheckDataCorrect(present_pressure, present_altitude, to_altitude))
             {
-                //From Airfield
-                myListboxFrom.Items.Add("");
-                myListboxFrom.Items.Add("QNH = \t" + Math.Round(
-                    (float.Parse(present_pressure) + ((float.Parse(present_altitude)) / 30)),
-                    2).ToString() + " mb");
+                string QNH = "QNH = \t" + Math.Round(
+                    (float.Parse(present_pressure) + (float.Parse(present_altitude) / 30)), 2).ToString() + " mb";
+
+                if (myListboxFrom.Items.Count >= 13)
+                {
+                    //if it exists then remove it and then replace it with new value.
+                    //From Airfield
+                    myListboxFrom.Items.RemoveAt(13);
+                    myListboxFrom.Items.Insert(13, QNH);
+                }
+                else
+                {
+                    //It does not yet exist so write for first time
+                    //From Airfield
+                    myListboxFrom.Items.Add("");
+                    myListboxFrom.Items.Add(QNH);
+                }
 
                 //To Airfield
                 lbl_to_pressure.Text = Math.Round(
@@ -41,17 +53,6 @@ public static bool Calculate_altimeter(string present_pressure, string present_a
 
                 return false;
             }
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         }
 
         /// <summary>