• C# 实现escape功能


    Js段调用escape,可以解决掉很多特殊字符的显示处理,但是如果你需要在后台处理的时候,需要转换,不是转义,比如说你是在前台方法里面显示一段内容,比如:onmouseover="tooltip.show('aaaa')"; 但是如果这个时候aaa中间有个单引号,如:onmouseover="tooltip.show('aaa'a')";那到前台处理的时候就会出问题了。处理方法如下:

      chr(39) '  转换后就是 '如此转换后还需要用HttpUtility.HtmlEncode 

    onmouseover="tooltip.show('" + HttpUtility.HtmlEncode(EscapeAndRemoveXSS(strDisplayValue)) + "')"

    public static string EscapeAndRemoveXSS(object objInput)
    {
          StringBuilder sbdOutput = new StringBuilder();

    if (objInput != null)
    {
    StringBuilder sbdInput = new StringBuilder(objInput.ToString());
    for (int intIndex = 0; intIndex < sbdInput.Length; intIndex++)
    {
    char chrInput = sbdInput[intIndex];
    int intChar = System.Convert.ToInt32(chrInput);
    //We will encode every characters except "A-Z", "a-z", "0-9", "&", "#", ";", "", " " by default
    if (intChar == 32 || intChar == 35 || intChar == 38  || (intChar >= 48 && intChar <= 57) ||
    intChar == 59 || (intChar >= 65 && intChar <= 90) || intChar == 92 || (intChar >= 97 && intChar <= 122) || intChar == 58 || intChar == 33)
    {
    sbdOutput.Append(chrInput);
    }

    else
    {
    //strOutput = strOutput + chrInput;
    sbdOutput.Append("&#" + intChar + ";");
    }
    }
    }
    return sbdOutput.ToString()

    }

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  • 原文地址:https://www.cnblogs.com/Teresa-luo/p/5063416.html
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