Please Help to convert this Javascript to C#

Code (csharp):

1. var theString : String = "";
2. var theSkin : GUISkin;
3. var The : GameObject;
4.  
5. function OnGUI() {
6.  
7. GUI.skin = theSkin;
8.  
9. GUI.TextField(Rect(100, 200, 200, 20), theString, 3);
10. Word1();
11. }
12.  
13.  
14. static var lastChar : String = "";
15.  
16. function Word1() {
17.     if (Event.current.isKey) {
18.         if (lastChar != Event.current.character) {
19.             lastChar = Event.current.character.ToString();
20.  
21.             switch (lastChar) {
22.                 case ("a"): theString += "a"; break;
23.                 case ("b"): theString += "b"; break;
24.                 case ("c"): theString += "c"; break;
25.                 case ("d"): theString += "d"; break;
26.                 case ("e"): theString += "e"; break;
27.                 case ("f"): theString += "f"; break;
28.                 case ("g"): theString += "g"; break;
29.                 case ("h"): theString += "h"; break;
30.                 case ("i"): theString += "i"; break;
31.                 case ("j"): theString += "j"; break;
32.                 case ("k"): theString += "k"; break;
33.                 case ("l"): theString += "l"; break;
34.                 case ("m"): theString += "m"; break;
35.                 case ("n"): theString += "n"; break;
36.                 case ("o"): theString += "o"; break;
37.                 case ("p"): theString += "p"; break;
38.                 case ("q"): theString += "q"; break;
39.                 case ("r"): theString += "r"; break;
40.                 case ("s"): theString += "s"; break;
41.                 case ("t"): theString += "t"; break;
42.                 case ("u"): theString += "u"; break;
43.                 case ("v"): theString += "v"; break;
44.                 case ("w"): theString += "w"; break;
45.                 case ("x"): theString += "x"; break;
46.                 case ("y"): theString += "y"; break;
47.                 case ("z"): theString += "z"; break;
48.                 case ("A"): theString += "A"; break;
49.                 case ("B"): theString += "B"; break;
50.                 case ("C"): theString += "C"; break;
51.                 case ("D"): theString += "D"; break;
52.                 case ("E"): theString += "E"; break;
53.                 case ("F"): theString += "F"; break;
54.                 case ("G"): theString += "G"; break;
55.                 case ("H"): theString += "H"; break;
56.                 case ("I"): theString += "I"; break;
57.                 case ("J"): theString += "J"; break;
58.                 case ("K"): theString += "K"; break;
59.                 case ("L"): theString += "L"; break;
60.                 case ("M"): theString += "M"; break;
61.                 case ("N"): theString += "N"; break;
62.                 case ("O"): theString += "O"; break;
63.                 case ("P"): theString += "P"; break;
64.                 case ("Q"): theString += "Q"; break;
65.                 case ("R"): theString += "R"; break;
66.                 case ("S"): theString += "S"; break;
67.                 case ("T"): theString += "T"; break;
68.                 case ("U"): theString += "U"; break;
69.                 case ("V"): theString += "V"; break;
70.                 case ("W"): theString += "W"; break;
71.                 case ("X"): theString += "X"; break;
72.                 case ("Y"): theString += "Y"; break;
73.                 case ("Z"): theString += "Z"; break;
74.  
75.                 default: break;
76.             }
77.  
78.             var compString : String = "The";
79.             var compString2 : String = "a";
80.  
81.             if (theString == compString) {
82.                 The.GetComponent("TheGreen").enabled = true;
83.                 }
84.  
85.             if (theString == compString2) {
86.                 The.GetComponent("TheRed").enabled = true;
87.             }
88.  
89.             if (Input.GetKeyDown("backspace")){
90.                            // this is where I would like to delete one character at a time but dont know what script to use      
91.  
92.  
93.              The.GetComponent("TheClear").enabled = true;
94.             }
95.  
96.         }
97.     }
98. }

 

here is how to declare variables and functions in C#
http://unity3d.com/learn/tutorials/modules/beginner/scripting/variables-and-functions

If statements:
http://unity3d.com/learn/tutorials/modules/beginner/scripting/if-statements

Switch statements:
http://unity3d.com/learn/tutorials/modules/beginner/scripting/switch

GUI textfield:
https://docs.unity3d.com/Documentation/ScriptReference/GUI.TextField.html

All of that combined should cover it.

 

Nevermind the fact that that switch statement is completely useless

 

Though, you might want to change that huge (and very repetitive) switch statement to something more sensible. Perhaps something like this:

Code (csharp):

1. string validChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
2. if (validChars.Contains(lastChar))
3. {
4.    theString += lastChar;
5. }