Windows Phone 7 Development for Absolute Beginners

Day 3 Homework Solution

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Got stuck with the homework assignment?  No worries, simply watch enough of this solution video to get un-stuck, OR compare your solution with Bob's version. IMPORTANT: before you peek at this video, please—for your own sake—try to complete this homework assignment on your own. You'll only learn through practice, frustration, and exploration.

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    The Discussion

    • spier

      You mentioned in your instructions to catch / trap for the user clicking save, delete, edit button at the wrong time and didn't cover it is in the solution. I just went ahead and set the isEnabled for each of the buttons to prevent the user form clicking the wrong button in the first place...

      I did this with a method setIconButtons(bool edit, bool save, bool delete) and then in each icon button click I told it which icon buttons to turn on / off…

      Great lesson!

      Thanks,

      Scott

       

       

    • Marco Forte

      Hey theres actually an enumeration for Filemode called "Truncate" that will Completely wipe all data in the file without creating another.
       
      Love the Series Marco

    • Mintydog

      I made a mess of mine. I did everything up to the save point. When trying to save it I was using the technique from the Tombstoning lesson, it didnt work Sad

    • Mintydog

      Ahh, I've just finished the full thing and I did the delete function different, with fewer lines of code.

      I called the isolated storage and deleted the file, then set the textbox to "".

      3 lines of code is all it took Smiley

    • Jaguma

      @Mintydog: Same Wink

      Oh yeah, GREAT TUTORIALS BOB Smiley

    • Jaguma

      Also, to delete the file, couldn't you have just used - 

      private void delete_click(object sender, EventArgs e)
              {
                  string fileName = "My_Note.txt";
                  IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication();
                  storage.DeleteFile(fileName);
                  outputBox.Text = "";
                  inputBox.Text = "";
              } // Delete

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