Fixed resource leak when opening files within the same file.

Advanced Software Engineering/Advanced Software Engineering/TextEditor.Designer.cs

@@ -187,6 +187,7 @@ namespace Advanced_Software_Engineering
             // timer1
             // 
             this.timer1.Interval = 1000;
+            this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
             // 
             // Text_Editor
             // 

Advanced Software Engineering/Advanced Software Engineering/TextEditor.cs

@@ -39,6 +39,7 @@ namespace Advanced_Software_Engineering {
             newWindow = false;
             okToOverwrite = true;
             UpdateTitle(openFile.FileName);
+            fileStream.Close();
         }
 
         void UpdateTitle(string fileName) {
@@ -55,14 +56,15 @@ namespace Advanced_Software_Engineering {
         private void saveFile() {
             if (!okToOverwrite) saveFileAs();
             else {
-                StreamWriter fileStream = new StreamWriter(fileName);
                 try {
+                    StreamWriter fileStream = new StreamWriter(fileName);
                     fileStream.Write(textBox1.Text);
                     unsavedChanges = false;
+                    showSavedMessage();
+                    fileStream.Close();
                 } catch (Exception e) {
                     new ErrorWindow("Write Failed!", "The program failed to write the file.", e.Message + "\n" + e.StackTrace, ErrorWindow.ERROR_MESSAGE).Show();
                 } finally {
-                    fileStream.Close();
                     UpdateTitle();
                 }
             }
@@ -83,6 +85,7 @@ namespace Advanced_Software_Engineering {
                     unsavedChanges = false;
                     okToOverwrite = true;
                     fileName = saveFileDialog.FileName;
+                    showSavedMessage();
                 } catch (Exception e) {
                     new ErrorWindow("Write Failed!", "The program failed to write the file.", e.Message + "\n" + e.StackTrace, ErrorWindow.ERROR_MESSAGE).Show();
                 } finally {
@@ -92,6 +95,11 @@ namespace Advanced_Software_Engineering {
             }
         }
 
+        private void showSavedMessage() {
+            label1.Text = "File saved";
+            timer1.Start();
+        }
+
         private void updateRowCol() {
             int line = textBox1.GetLineFromCharIndex(textBox1.SelectionStart);
             int column = textBox1.SelectionStart - textBox1.GetFirstCharIndexFromLine(line);
@@ -112,13 +120,7 @@ namespace Advanced_Software_Engineering {
         }
 
         private void openFile() {
-            DialogResult result = DialogResult.Yes;
 
-            if (unsavedChanges) {
-                result = MessageBox.Show("You have unsaved work. Would you like to discard your work and open a new file?", "Unsaved work!", MessageBoxButtons.YesNo, MessageBoxIcon.None);
-            }
-
-            if (result == DialogResult.Yes) {
             OpenFileDialog openFileDialog = new OpenFileDialog();
 
             if (openFileDialog.ShowDialog() == DialogResult.OK) {
@@ -127,11 +129,13 @@ namespace Advanced_Software_Engineering {
                     StreamReader fileStream = new StreamReader(openFileDialog.OpenFile());
                     textBox1.Text = fileStream.ReadToEnd();
                     unsavedChanges = false;
+                    okToOverwrite = true;
                     newWindow = false;
                     UpdateTitle(openFileDialog.FileName);
+                    fileStream.Close();
                 } else new Text_Editor(openFileDialog).Show();
             }
-            }
+
         }
 
         private void RunCode() {
@@ -233,6 +237,9 @@ namespace Advanced_Software_Engineering {
 
         private void describeToolStripMenuItem_Click(object sender, EventArgs e) => DescribeCode();
 
-        
+        private void timer1_Tick(object sender, EventArgs e) {
+            updateRowCol();
+            timer1.Stop();
+        }
     }
 }