有没有一种将.NET字符串编码为用于MS Ajax的JavaScript字符串的标准方法？ [英] Is there a standard way to encode a .NET string into JavaScript string for use in MS Ajax?

问题描述

我试图使用.NET 3.5中的MS ScriptManager的 RegisterStartUpScript 方法将SQL Server异常的输出传递给客户端。这对于某些错误可以正常工作，但是当异常包含单引号时，警报将失败。

I'm trying to pass the output of a SQL Server exception to the client using the RegisterStartUpScript method of the MS ScriptManager in .NET 3.5. This works fine for some errors but when the exception contains single quotes the alert fails.

我不想仅仅转义单引号。有没有一个标准的函数可以调用来转义任何用于JavaScript的特殊字符？

I dont want to only escape single quotes though. Is there a standard function I can call to escape any special chars for use in JavaScript?

string scriptstring = "alert('" + ex.Message + "');";         
ScriptManager.RegisterStartupScript(this, this.GetType(), "Alert", scriptstring , true);

---

编辑：

感谢@tpeczek，代码几乎为我工作:)但是稍微修改（单引号的转义），它可以处理。

Thanks @tpeczek, the code almost worked for me :) but with a slight amendment (the escaping of single quotes) it works a treat.

我包括我在这里修正后的版本...

I've included my amended version here...

public class JSEncode
{
    /// <summary>
    /// Encodes a string to be represented as a string literal. The format
    /// is essentially a JSON string.
    /// 
    /// The string returned includes outer quotes 
    /// Example Output: "Hello \"Rick\"!\r\nRock on"
    /// </summary>
    /// <param name="s"></param>
    /// <returns></returns>
    public static string EncodeJsString(string s)
    {
        StringBuilder sb = new StringBuilder();
        sb.Append("\"");
        foreach (char c in s)
        {
            switch (c)
            {
                case '\'':
                    sb.Append("\\\'");
                    break;
                case '\"':
                    sb.Append("\\\"");
                    break;
                case '\\':
                    sb.Append("\\\\");
                    break;
                case '\b':
                    sb.Append("\\b");
                    break;
                case '\f':
                    sb.Append("\\f");
                    break;
                case '\n':
                    sb.Append("\\n");
                    break;
                case '\r':
                    sb.Append("\\r");
                    break;
                case '\t':
                    sb.Append("\\t");
                    break;
                default:
                    int i = (int)c;
                    if (i < 32 || i > 127)
                    {
                        sb.AppendFormat("\\u{0:X04}", i);
                    }
                    else
                    {
                        sb.Append(c);
                    }
                    break;
            }
        }
        sb.Append("\"");

        return sb.ToString();
    }
}

如下所述 - 原始来源： here

As mentioned below - original source: here

推荐答案

看看 HttpUtility.JavaScriptStringEncode ？

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