你也可以简单地写这些字符串扩展方法，并把它们放在你的解决方案中的某个地方:

using System.Text;

public static class StringExtensions
{
    public static string ReplaceAll(this string original, string toBeReplaced, string newValue)
    {
        if (string.IsNullOrEmpty(original) || string.IsNullOrEmpty(toBeReplaced)) return original;
        if (newValue == null) newValue = string.Empty;
        StringBuilder sb = new StringBuilder();
        foreach (char ch in original)
        {
            if (toBeReplaced.IndexOf(ch) < 0) sb.Append(ch);
            else sb.Append(newValue);
        }
        return sb.ToString();
    }

    public static string ReplaceAll(this string original, string[] toBeReplaced, string newValue)
    {
        if (string.IsNullOrEmpty(original) || toBeReplaced == null || toBeReplaced.Length <= 0) return original;
        if (newValue == null) newValue = string.Empty;
        foreach (string str in toBeReplaced)
            if (!string.IsNullOrEmpty(str))
                original = original.Replace(str, newValue);
        return original;
    }
}

这样称呼他们:

"ABCDE".ReplaceAll("ACE", "xy");

xyBxyDxy

这:

"ABCDEF".ReplaceAll(new string[] { "AB", "DE", "EF" }, "xy");

xyCxyF

可以使用replace正则表达式。

s/[;,\t\r ]|[\n]{2}/\n/g

S /在开头表示搜索 [和]之间的字符是要搜索的字符(以任何顺序) 第二个/分隔搜索文本和替换文本

用英语来说，这是:

“寻找;或者，或者\t \r或者(空格)或者恰好两个连续的\n，然后把它替换成\n

在c#中，你可以做以下事情:(在导入system . text . regulareexpressions之后)

Regex pattern = new Regex("[;,\t\r ]|[\n]{2}");
pattern.Replace(myString, "\n");

你也可以简单地写这些字符串扩展方法，并把它们放在你的解决方案中的某个地方:

using System.Text;

public static class StringExtensions
{
    public static string ReplaceAll(this string original, string toBeReplaced, string newValue)
    {
        if (string.IsNullOrEmpty(original) || string.IsNullOrEmpty(toBeReplaced)) return original;
        if (newValue == null) newValue = string.Empty;
        StringBuilder sb = new StringBuilder();
        foreach (char ch in original)
        {
            if (toBeReplaced.IndexOf(ch) < 0) sb.Append(ch);
            else sb.Append(newValue);
        }
        return sb.ToString();
    }

    public static string ReplaceAll(this string original, string[] toBeReplaced, string newValue)
    {
        if (string.IsNullOrEmpty(original) || toBeReplaced == null || toBeReplaced.Length <= 0) return original;
        if (newValue == null) newValue = string.Empty;
        foreach (string str in toBeReplaced)
            if (!string.IsNullOrEmpty(str))
                original = original.Replace(str, newValue);
        return original;
    }
}

这样称呼他们:

"ABCDE".ReplaceAll("ACE", "xy");

xyBxyDxy

这:

"ABCDEF".ReplaceAll(new string[] { "AB", "DE", "EF" }, "xy");

xyCxyF

使用正则表达式。替换，像这样:

  string input = "This is   text with   far  too   much   " + 
                 "whitespace.";
  string pattern = "[;,]";
  string replacement = "\n";
  Regex rgx = new Regex(pattern);
  string result = rgx.Replace(input, replacement);

这里是关于RegEx的MSDN文档的更多信息。取代

哦，表演太恐怖了! 答案有点过时了，但仍然……

public static class StringUtils
{
    #region Private members

    [ThreadStatic]
    private static StringBuilder m_ReplaceSB;

    private static StringBuilder GetReplaceSB(int capacity)
    {
        var result = m_ReplaceSB;

        if (null == result)
        {
            result = new StringBuilder(capacity);
            m_ReplaceSB = result;
        }
        else
        {
            result.Clear();
            result.EnsureCapacity(capacity);
        }

        return result;
    }


    public static string ReplaceAny(this string s, char replaceWith, params char[] chars)
    {
        if (null == chars)
            return s;

        if (null == s)
            return null;

        StringBuilder sb = null;

        for (int i = 0, count = s.Length; i < count; i++)
        {
            var temp = s[i];
            var replace = false;

            for (int j = 0, cc = chars.Length; j < cc; j++)
                if (temp == chars[j])
                {
                    if (null == sb)
                    {
                        sb = GetReplaceSB(count);
                        if (i > 0)
                            sb.Append(s, 0, i);
                    }

                    replace = true;
                    break;
                }

            if (replace)
                sb.Append(replaceWith);
            else
                if (null != sb)
                    sb.Append(temp);
        }

        return null == sb ? s : sb.ToString();
    }
}

string ToBeReplaceCharacters = @"~()@#$%&+,'"<>|;\/*?";
string fileName = "filename;with<bad:separators?";

foreach (var RepChar in ToBeReplaceCharacters)
{
    fileName = fileName.Replace(RepChar.ToString(), "");
}