How to convert string to int?

Question

C++ / C#

FormatException: Input string was not in the correct format
System.Int32.Parse (System.String s) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/Int32.cs:629)
System. Convert.ToInt32 (System.String value) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/Convert.cs:1270)
PhotoPoserAuto.Mass (System.String fold) (at Assets/Scripts /PhotoPoserAuto.cs:46)
PhotoPoserAuto.GetInfo () (at Assets/Scripts/PhotoPoserAuto.cs:32)
PhotoPoserAuto.AutoPosing () (at Assets/Scripts/PhotoPoserAuto.cs:25)
PhotoPoserAutoGUI.OnInspectorGUI () (at Assets/ Scripts/PhotoPoserAutoGUI.cs:15)
UnityEditor.InspectorWindow.DrawEditor (UnityEditor.Editor editor, Int32 editorIndex, Boolean rebuildOptimizedGUIBlock, System.Boolean& showImportedObjectBarNext, UnityEngine.Rect& importedObjectBarRect) (at C:/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:1236)
UnityEditor.DockArea:OnGUI() is such an error
pastebin.com/5nA1bt54 and I
can’t figure out what’s wrong with the code, only metas are shown from the directory elements, and it doesn’t convert number paths to sort

Answer 1

1) Catch an error in the debugger, look at which value of the argument System.Int32.Parse throws an error, it's definitely not a number.
2) Use Int32.TryParse in order not to catch exceptions on your own, but simply to skip such situations.