[Débutant] Convertir un chiffre en lettres arabe C#

voilà le code pour 1 million :
Code:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
public string convertion(double Lchiffre)
        {
            string Letter1="", Letter2="", Letter3="", Letter4="", Letter5="", Letter6="";
            int centaine, dizaine, unite;
 
            decimal chiffre3;
            chiffre3 = (int)((Lchiffre - (int)Lchiffre) * 1000);
 
             int x = Convert.ToInt32(Math.Truncate(Lchiffre));
             centaine = x/100;
             int ce = centaine.ToString().Length;
 
             dizaine = (x - centaine * 100)/10  ;
             int diz = dizaine.ToString().Length;
 
             unite = x - (centaine * 100) - (dizaine * 10);
             int unit = unite.ToString().Length ;
             int total = ce + diz + unit;
             int lg = 12 - total;
 
                    string C = "";
                     switch (lg)
                     {
                         case 0: C = x.ToString();
                             break;
                         case 1: C = "0"+x.ToString();
                             break;
                         case 2 : C= "00" +x.ToString();
                             break;
                         case 3: C = "000" + x.ToString();
                             break;
                         case 4: C = "0000" + x.ToString();
                             break;
                         case 5: C = "00000" + x.ToString();
                             break;
                         case 6: C = "000000" + x.ToString();
                             break;
                         case 7: C = "0000000" + x.ToString(); ;
                             break;
                         case 8: C = "00000000" + x.ToString();
                             break;
                         case 9: C = "000000000" + x.ToString();
                             break;
                         case 10: C = "0000000000" + x.ToString();
                             break;
                         case 11: C = "00000000000" + x.ToString();
                             break;
                         case 12: C = "000000000000" + x.ToString();
                             ;
                             break;
                     }
 
//*******************************
                double C1 = Convert.ToDouble(C.Substring(11, 1));
                    if (C1 == 0)  Letter1 = ""; 
                    if (C1 == 1)  Letter1 = "واحد"; 
                    if (C1 == 2)  Letter1 = "إثنان"; 
                    if (C1 == 3)  Letter1 = "ثلاثة"; 
                    if (C1 == 4)  Letter1 = "أربعة"; 
                    if (C1 == 5)  Letter1 = "خمسة"; 
                    if (C1 == 6)  Letter1 = "ستة"; 
                    if (C1 == 7)  Letter1 = "سبعة"; 
                    if (C1 == 8)  Letter1 = "ثمانية"; 
                    if (C1 == 9)  Letter1 = "تسعة";
 
 //*******************************
            double C2 = Convert.ToDouble(C.Substring(10, 1));
 
                if (C2 == 1) { Letter2 = "عشر"; }
                if (C2 == 2) { Letter2 = " عشرون "; }
                if (C2 == 3) { Letter2 = " ثلاثون "; }
                if (C2 == 4) { Letter2 = " أربعون"; }
                if (C2 == 5) { Letter2 = " خمسون"; }
                if (C2 == 6) { Letter2 = " ستون"; }
                if (C2 == 7) { Letter2 = " سبعون"; }
                if (C2 == 8) { Letter2 = " ثمانون"; }
                if (C2 == 9) { Letter2 = " تسعون"; }
 
                if (Letter1 != "" && C2 > 1) Letter2 = Letter1 + " و" + Letter2;
                if (Letter2 == "") Letter2 = Letter1;
 
                if (C1 == 0 && C2 == 1) Letter2 = Letter2 + "ة";
                if (C1 == 1 && C2 == 1) Letter2 = " إحدى عشر ";
                if (C1 == 2 && C2 == 1) Letter2 = " إثنى عشر ";
                if (C1 > C2 && C2 == 1) Letter2 = Letter1 + "  " + Letter2;
 
 //*******************************
 
                double C3 = Convert.ToDouble(C.Substring(9, 1));
 
                if (C3 == 1) { Letter3 = "مائة"; }
                if (C3 == 2) { Letter3 = "مئتان"; }
                if (C3 == 3) { Letter3 = "ثلاثمائة"; }
                if (C3 == 4) { Letter3 = "أربعمائة"; }
                if (C3 == 5) { Letter3 = "خمسمائة"; }
                if (C3 == 6) { Letter3 = "ستمائة"; }
                if (C3 == 7) { Letter3 = "سبعمائة"; }
                if (C3 == 8) { Letter3 = "ثمانمائة"; }
                if (C3 == 9)  Letter3 = "تسعمائة";
 
                if (Letter3 != "" && Letter2 != "") Letter3 = Letter3 + " و"  + Letter2 ;
                if (Letter3 == "") Letter3 = Letter2 ;
 
//*******************************
 
                double C4 = Convert.ToDouble(C.Substring(6, 3));
                if (C4 == 1) { Letter4 = "ألف"; }
                if (C4 == 2) { Letter4 = "ألفان"; }
                if (3 <= C4 && C4 <= 10) { Letter4 = convertion(C4) + "ألاف  "; }
                if (C4 >10 )  { Letter4 = convertion(C4) + " ألفا "; }
 
                if (Letter4 != "" && Letter3 != "") Letter4 = Letter4 + " و" + Letter3 + " دينارا ";
                if (Letter4 == "") Letter4 = Letter3;
 
//*******************************
 
                double C5 = Convert.ToDouble(C.Substring(3, 3));
 
                if (C5 == 1) { Letter4 = "مليون "; }
                if (C5 == 2) { Letter4 = "مليونان "; }
                if (3 <= C5 && C5 <= 10) { Letter5 = convertion(C5) + "ملايين  "; }
                if (C5> 10 )  { Letter5 = convertion(C5) + "مليون "; }
 
                if (Letter5 != "" && Letter4 != "") Letter5 = Letter5 + "  و" + Letter4;
                if (Letter5 == "") Letter5 = Letter4 ;
 
 //*******************************
 
                double C6 = Convert.ToDouble(C.Substring(1, 3));
                if (C6 == 1) { Letter6 = "مليار "; }
                if (C6 == 2) { Letter6 = "ملياران "; }
                if (C6> 20 ) { Letter6 = convertion(C6) + "مليار "; }
 
                if (Letter6 != "" && Letter5 != "") Letter6 = Letter6 + " و" + Letter5;
                if (Letter6 == "") Letter6 = Letter5;
                return  Letter6 ;
}