Resolved issue of Opening non Gifs, Model is now also disposable for memory leak resolving

src/Gifitti/Gifitti/Models/GifModel.cs

@@ -14,7 +14,7 @@ namespace Gifitti.Models
     /// <summary>
     /// Software model of a GIF, Encapsulated with bassic opperations on GIF images.
     /// </summary>
-    public class GifModel
+    public class GifModel : IDisposable
     {
         public Image gifImage { get; set; }
         public Image originalGif { get; private set; }
@@ -35,9 +35,6 @@ namespace Gifitti.Models
         public GifModel(String path)
         {
             Console.WriteLine(Path.GetExtension(path));
-
-            if (!Path.GetExtension(path).ToLower().Equals(".gif"))
-                throw new FileLoadException("Invalid Extension Specified");
             //Save the original Gif
             originalGif = Image.FromFile(path);
             this.gifImage = originalGif.Clone() as Image;
@@ -202,5 +199,10 @@ namespace Gifitti.Models
         {
             frames[index] = frame;
         }
+
+        public void Dispose()
+        {
+            this.frames = null;
+        }
     }
 }

src/Gifitti/Gifitti/View_Models/MainForm.Designer.cs

@@ -67,7 +67,7 @@ namespace Gifitti.View_Models
             // gifView
             // 
             this.gifView.Location = new System.Drawing.Point(9, 10);
-            this.gifView.Margin = new System.Windows.Forms.Padding(2, 2, 2, 2);
+            this.gifView.Margin = new System.Windows.Forms.Padding(2);
             this.gifView.Name = "gifView";
             this.gifView.Size = new System.Drawing.Size(456, 382);
             this.gifView.TabIndex = 2;
@@ -152,7 +152,7 @@ namespace Gifitti.View_Models
             this.textBox1.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
             this.textBox1.Enabled = false;
             this.textBox1.Location = new System.Drawing.Point(214, 448);
-            this.textBox1.Margin = new System.Windows.Forms.Padding(2, 2, 2, 2);
+            this.textBox1.Margin = new System.Windows.Forms.Padding(2);
             this.textBox1.Name = "textBox1";
             this.textBox1.Size = new System.Drawing.Size(23, 20);
             this.textBox1.TabIndex = 3;
@@ -163,7 +163,7 @@ namespace Gifitti.View_Models
             this.textBox2.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
             this.textBox2.Enabled = false;
             this.textBox2.Location = new System.Drawing.Point(240, 448);
-            this.textBox2.Margin = new System.Windows.Forms.Padding(2, 2, 2, 2);
+            this.textBox2.Margin = new System.Windows.Forms.Padding(2);
             this.textBox2.Name = "textBox2";
             this.textBox2.Size = new System.Drawing.Size(23, 20);
             this.textBox2.TabIndex = 4;
@@ -174,7 +174,7 @@ namespace Gifitti.View_Models
             this.button3.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
             this.button3.Enabled = false;
             this.button3.Location = new System.Drawing.Point(266, 445);
-            this.button3.Margin = new System.Windows.Forms.Padding(2, 2, 2, 2);
+            this.button3.Margin = new System.Windows.Forms.Padding(2);
             this.button3.Name = "button3";
             this.button3.Size = new System.Drawing.Size(50, 24);
             this.button3.TabIndex = 5;
@@ -224,7 +224,7 @@ namespace Gifitti.View_Models
             // 
             this.trackBar1.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
             this.trackBar1.Location = new System.Drawing.Point(328, 448);
-            this.trackBar1.Margin = new System.Windows.Forms.Padding(2, 2, 2, 2);
+            this.trackBar1.Margin = new System.Windows.Forms.Padding(2);
             this.trackBar1.Name = "trackBar1";
             this.trackBar1.Size = new System.Drawing.Size(137, 45);
             this.trackBar1.TabIndex = 9;
@@ -271,7 +271,8 @@ namespace Gifitti.View_Models
             this.Controls.Add(this.textBox2);
             this.Controls.Add(this.textBox1);
             this.Controls.Add(this.gifView);
-            this.Margin = new System.Windows.Forms.Padding(2, 2, 2, 2);
+            this.Margin = new System.Windows.Forms.Padding(2);
+            this.MaximizeBox = false;
             this.Menu = this.mainMenu1;
             this.Name = "MainForm";
             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;

src/Gifitti/Gifitti/View_Models/MainForm.cs

@@ -258,6 +258,9 @@ namespace Gifitti.View_Models
                 {
                     try
                     {
+                        if (!Path.GetExtension(file).ToLower().Equals(".gif"))
+                            throw new FileLoadException("Invalid Extension Specified");
+                        gm?.Dispose();
                         gm = new GifModel(file);
                         gm.ReverseAtEnd = false;
                         Image loadedGif = gm.gifImage;