[C#] 纯文本查看 复制代码
/// <summary>
/// 输入一个英文字母，输出之后的第几个字母（数据库字符排序用，常用为第一个）。
/// </summary>
/// <param name="Knowword">英文字母</param>
/// <param name="next">该字母的后面第几个(不能超出长度，否则报错)</param>
/// <param name="dx">ture大写，false小写</param>
/// <returns>返回字母</returns>
public string reWordNext(string Knowword,int next,bool dx)
{
string Words_s = "abcdefghijklmnopqrstuvwxyz";
string Words_m = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string reWord = "";
if (dx==true)
{
//大写
int s = Words_m.IndexOf(Knowword);//获取索引
string NewWord = Words_m.Substring(s, next+1);//截取
reWord = NewWord.Substring(NewWord.Length - 1, 1);
}
else
{
//小写
int s = Words_s.IndexOf(Knowword);//获取索引
string NewWord = Words_s.Substring(s, next+1);//截取
reWord = NewWord.Substring(NewWord.Length - 1, 1);
}
return reWord;
}