带大小写忽略的Replace

时间：2014-01-14 21:19:20 收藏：0 阅读：405
#region 以下函数用于忽略大小写替换操作
 public 
static 
string 
Replace(string 
Expression, string 
Find, string 
Replacement)
 {
     return 
Replace(Expression, Find, Replacement, StringComparison.OrdinalIgnoreCase);
 }
 
 public 
static 
string 
Replace(string 
Expression, string 
Find, string 
Replacement, StringComparison Compare)
 {
     if 
(string.IsNullOrEmpty(Expression) || string.IsNullOrEmpty(Find))
     {
         return 
Expression;
     }
 
     int 
iIndex = 0;
     int 
length = Expression.Length;
     int 
iFindLength = Find.Length;
 
     StringBuilder builder = new 
StringBuilder(length);
 
     while 
(iIndex < length)
     {
         int 
iFindIndex = Expression.IndexOf(Find, iIndex, Compare);
         if 
(iFindIndex < 0)
         {
             builder.Append(Expression.Substring(iIndex));
             break;
         }
         builder.Append(Expression.Substring(iIndex, iFindIndex - iIndex));
         builder.Append(Replacement);
         iIndex = iFindIndex + iFindLength;
     }
     return 
builder.ToString();
 }
 
 #endregion
原文：http://www.cnblogs.com/briny/p/3513019.html