+adding config save for paintings path

App.config

@@ -1,6 +1,18 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <configuration>
+    <configSections>
+        <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
+            <section name="DyeAtlas.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
+        </sectionGroup>
+    </configSections>
     <startup> 
         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
     </startup>
+    <userSettings>
+        <DyeAtlas.Properties.Settings>
+            <setting name="MyPaintings" serializeAs="String">
+                <value />
+            </setting>
+        </DyeAtlas.Properties.Settings>
+    </userSettings>
 </configuration>

DyeAtlas.cs

@@ -34,7 +34,7 @@ public Palette LoadPalette()
 
         public static Palette palette;// defer loading until form load..  make sure config files are nice
 
-        private void Form1_Load(object sender, EventArgs e)
+        private void DyeAtlas_Load(object sender, EventArgs e)
         {
             palette = LoadPalette();
 
@@ -46,6 +46,24 @@ private void Form1_Load(object sender, EventArgs e)
             preview.BackgroundImage = bk;
 
             resolution.SelectedIndex = 1;// 256x256
+
+            // load settings
+            mypaintings.Text = Properties.Settings.Default.MyPaintings;
+        }
+
+        private void DyeAtlas_FormClosed(object sender, FormClosedEventArgs e)
+        {
+            // save settings
+            Properties.Settings.Default.MyPaintings = mypaintings.Text;
+        }
+
+        // convenience
+        public string MyPaintingsPath
+        {
+            get
+            {
+                return mypaintings.Text;
+            }
         }
 
         private void Form1_DragEnter(object sender, DragEventArgs e)
@@ -86,8 +104,6 @@ public void SaveFile(string file)
             }
         }
 
-        public string lastOpenedFile = null;
-
         public Size ExportDimensions
         {
             get
@@ -162,7 +178,7 @@ public void OpenFile(string file)
                     pnt = PNTImage.GenerateFromBitmap(bmp, dithering.Checked);
                 }
 
-                lastOpenedFile = file;
+                currentfile.Text = file;
                 resolution.Text = $"{pnt.width}x{pnt.height}";
 
                 preview.Image = pnt.GenerateBitmap();
@@ -188,6 +204,9 @@ private void openButton_Click(object sender, EventArgs e)
         {
             OpenFileDialog ofd = new OpenFileDialog();
 
+            if (Directory.Exists(MyPaintingsPath))
+                ofd.InitialDirectory = MyPaintingsPath;
+
             ofd.Filter = "Compatible Files (*.pnt;*.png;*.bmp;*.jpg)|*.pnt;*.png;*.bmp;*.jpg|Paint Files (*.pnt)|*.pnt|Image Files (*.png;*.bmp;*.jpg)|*.png;*.bmp;*.jpg|All Files (*.*)|*.*";
 
             if (ofd.ShowDialog() != DialogResult.OK)
@@ -198,7 +217,7 @@ private void openButton_Click(object sender, EventArgs e)
 
         private void dithering_CheckedChanged(object sender, EventArgs e)
         {
-            OpenFile(lastOpenedFile);
+            OpenFile(currentfile.Text);
         }
 
         private void savePNTButton_Click(object sender, EventArgs e)
@@ -209,6 +228,9 @@ private void savePNTButton_Click(object sender, EventArgs e)
 
             SaveFileDialog sfd = new SaveFileDialog();
 
+            if (Directory.Exists(MyPaintingsPath))
+                sfd.InitialDirectory = MyPaintingsPath;
+
             sfd.Filter = "Paint File (*.pnt)|*.pnt|All Files (*.*)|*.*";
 
             if (sfd.ShowDialog() != DialogResult.OK)
@@ -225,6 +247,9 @@ private void savePNGButton_Click(object sender, EventArgs e)
 
             SaveFileDialog sfd = new SaveFileDialog();
 
+            if (Directory.Exists(MyPaintingsPath))
+                sfd.InitialDirectory = MyPaintingsPath;
+
             sfd.RestoreDirectory = true;// if we are exporting image to desktop or whatever then we should not mess with open file
             sfd.Filter = "PNG File (*.png)|*.png|Image Files (*.png;*.bmp;*.jpg)|*.png;*.bmp;*.jpg|All Files (*.*)|*.*";
 
@@ -236,7 +261,7 @@ private void savePNGButton_Click(object sender, EventArgs e)
 
         private void resolution_TextChanged(object sender, EventArgs e)
         {
-            OpenFile(lastOpenedFile);
+            OpenFile(currentfile.Text);
         }
     }
 }

Program.cs

@@ -16,7 +16,10 @@ static void Main()
         {
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);
+
             Application.Run(new DyeAtlas());
+
+            Properties.Settings.Default.Save();
         }
     }
 }

Properties/Settings.settings

@@ -1,7 +1,9 @@
 <?xml version='1.0' encoding='utf-8'?>
-<SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)">
-  <Profiles>
-    <Profile Name="(Default)" />
-  </Profiles>
-  <Settings />
-</SettingsFile>
+<SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)" GeneratedClassNamespace="DyeAtlas.Properties" GeneratedClassName="Settings">
+  <Profiles />
+  <Settings>
+    <Setting Name="MyPaintings" Type="System.String" Scope="User">
+      <Value Profile="(Default)" />
+    </Setting>
+  </Settings>
+</SettingsFile>