public string ToSBC(string input) 
...{
//半角轉全角:
char[] c = input.ToCharArray();
for (int i = 0; i < c.Length; i++) 
...{
if (c[i] == 32) 
...{
c[i] = (char) 12288;
continue;
}
if (c[i] < 127)
c[i] = (char) (c[i] + 65248);
}
return new string(c);
} 