替换字符串,正则替换字符串,不区分大小写替换字符串,代码,CSharp代码库,德仔网

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【CSharp】替换字符串,正则替换字符串,不区分大小写替换字符串,
作者: / 发布于2011/1/17/ 1233
替换字符串,正则替换字符串,不区分大小写替换字符串,替换html标签,正则匹配
<div>using System;
using System.Text;
using System.Text.RegularExpressions;</div>
<div>namespace EC 
{
/// <summary>
/// 替换字符串
/// </summary>
public class StringRepStrs 
{</div>
<div></div>
<div> public StringRepStrs () 
 {
 }
<div>region 普通替换字符串</div>
<div> /// <summary>
 /// 普通替换字符串</div>
<div> /// </summary>
 /// <param name="src">源字符串</param>
 /// <param name="pattern">要匹配的正则表达式模式</param>
 /// <param name="replacement">替换字符串</param>
 /// <returns>已修改的字符串</returns>
 public static string Replace (string src, string pattern, string replacement) 
 {
 return Replace(src, pattern, replacement, RegexOptions.None);
 }
<div>endregion</div>
<div>region 正则替换字符串</div>
<div> /// <summary>
 /// 正则替换字符串</div>
<div> /// </summary>
 /// <param name="src">要修改的字符串</param>
 /// <param name="pattern">要匹配的正则表达式模式</param>
 /// <param name="replacement">替换字符串</param>
 /// <param name="options">匹配模式</param>
 /// <returns>已修改的字符串</returns>
 public static string Replace (string src, string pattern, string replacement, RegexOptions options) 
 {
 Regex regex = new Regex(pattern, options|RegexOptions.Compiled);</div>
<div> return regex.Replace(src, replacement);
 }
<div>endregion</div>
<div>region 不区分大小写替换字符串</div>
<div> /// <summary>
 /// 不区分大小写替换字符串</div>
<div> /// </summary>
 /// <param name="src">源字符串</param>
 /// <param name="pattern">要匹配的正则表达式模式</param>
 /// <param name="replacement">替换字符串</param>
 /// <returns>已修改的字符串</returns>
 public static string ReplaceIgnoreCase (string src, string pattern, string replacement) 
 {
 return Replace(src, pattern, replacement, RegexOptions.IgnoreCase);
 }
<div>endregion</div>
<div></div>
<div>
 /// <summary>
 /// 删除字符串中指定的内容
 /// </summary>
 /// <param name="src">要修改的字符串</param>
 /// <param name="pattern">要删除的正则表达式模式</param>
 /// <returns>已删除指定内容的字符串</returns>
 public static string Drop (string src, string pattern) 
 {
 return Replace(src, pattern, "");
 } 
</div>
<div> /// <summary>
 /// 删除字符串中指定的内容,不区分大小写
 /// </summary>
 /// <param name="src">要修改的字符串</param>
 /// <param name="pattern">要删除的正则表达式模式</param>
 /// <returns>已删除指定内容的字符串</returns>
 public static string DropIgnoreCase (string src, string pattern) 
 {
 return ReplaceIgnoreCase(src, pattern, "");
 }
<div> /// <summary>
 /// 替换字符串到数据库可输入模式
 /// </summary>
 /// <param name="src">待插入数据库的字符串</param>
 /// <returns>可插入数据库的字符串</returns>
 public static string ToSQL (string src) 
 {
 if (src == null) 
 {
 return null;
 }
 return Replace(src, "", "");
 }
<div> /// <summary>
 /// 去掉html内容中的指定的html标签
 /// </summary>
 /// <param name="content">html内容</param>
 /// <param name="tagName">html标签</param>
 /// <returns>去掉标签的内容</returns>
 public static string DropHtmlTag (string content, string tagName) 
 {
 //去掉<tagname>和</tagname>
 return DropIgnoreCase(content, "<[/]{0,1}" + tagName + "[^\\>]*\\>");
 }
<div> /// <summary>
 /// 去掉html内容中全部标签
 /// </summary>
 /// <param name="content">html内容</param>
 /// <returns>去掉html标签的内容</returns>
 public static string DropHtmlTag (string content) 
 {
 //去掉<*>
 return Drop(content, "<[^\\>]*>");
 }
<div> /// <summary>
 /// 判断一个数据是不是数字
 /// </summary>
 /// <param name="inputData">字符串</param>
 /// <returns>结果</returns>
 public static bool IsNumeric(string inputData)
 {
 Regex _isNumber = new Regex(@"^\d+{$article$}quot;);
 Match m = _isNumber.Match(inputData);
 return m.Success;
 }
<div> /// <summary>
 /// 转换html标签为web页可见内容
 /// </summary>
 /// <param name="src"></param>
 /// <returns></returns>
 public static string EscapeHtml (string src) 
 {
 if (src == null) 
 {
 return null;
 }
 string s = src;
 s = Replace(s, ">", "&gt;");
 s = Replace(s, "<", "&lt;");
 return s;
 }
<div> /// <summary>
 /// 将字符串格式化成HTML代码
 /// </summary>
 /// <param name="str">要格式化的字符串</param>
 /// <returns>格式化后的字符串</returns>
 public static String ToHtml(string str) 
 {
 if (str == null || str.Equals("")) 
 {
 return str;
 }
 
 StringBuilder sb= new StringBuilder(str);
 sb.Replace("&", "&amp;");
 sb.Replace("<", "&lt;");
 sb.Replace(">", "&gt;");
 sb.Replace("\r\n", "
");
 sb.Replace("\n", "
");
 sb.Replace("\t", " ");
 sb.Replace(" ", "&nbsp;");
 return sb.ToString();
 }
<div>
 /// <summary>
 /// 将HTML代码转化成文本格式
 /// </summary>
 /// <param name="str">要格式化的字符串</param>
 /// <returns>格式化后的字符串</returns>
 public static String ToTxt(String str) 
 {
 if (str == null || str.Equals("")) 
 {
 return str;
 }
 
 StringBuilder sb= new StringBuilder(str);
 sb.Replace("&nbsp;", " ");
 sb.Replace("
", "\r\n");
 sb.Replace("&lt;", "<");
 sb.Replace("&gt;", ">");
 sb.Replace("&amp;", "&");
 return sb.ToString();
 }
}
}
<div></div>
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