Fixed the file import bug where every tile was empty

NonoGramme/Grid.cs

@@ -127,8 +127,6 @@ namespace NonoGramme
                 rawData = matches[0].Groups[1].Value;
             }
 
-
-            //MessageBox.Show(rawData);
             if (rawData.Length != size.Width * size.Height)
                 MessageBox.Show("The file contains conflicting datas");
 
@@ -149,7 +147,7 @@ namespace NonoGramme
 
                     Tile.State tileState = Tile.State.Empty;
                     int flatIndex = y * GridSize.Width + x;
-                    if (rawData[flatIndex] == 1)
+                    if (rawData[flatIndex] == '1')
                     {
                         tileState = Tile.State.Undiscovered;
                     }
@@ -158,7 +156,7 @@ namespace NonoGramme
                 }
             }
 
-            MessageBox.Show("File imported Successfully");
+            //MessageBox.Show("File imported Successfully");
         }
         private void Populate()
         {