Stringbuilder在将其转换为字符串后添加反斜杠。 [英] Stringbuilder adds backslash after converting it to string.

问题描述

嗨我有一种情况，我想在字符串中添加引号。

Hi I have a situation in which I want to add inverted commas the the string.

static void Main(string[] args)
{
    int valueCounter = 0;
    int valueCount = 0;
    var valueBuilder = new StringBuilder();
    List<string> values = new List<string>();
    values.Add("AAAA");
    values.Add("BBBB");
    values.Add("CCCC");
    valueCount = values.Count;

    foreach (var value in values)
    {
        valueCounter++;
        if ((valueCounter - 1) > 0)
            valueBuilder.Append("\"");
        valueBuilder.Append(values[valueCounter - 1].ToString());

        if (valueCounter != valueCount)
        {
            valueBuilder.Append(@",");
        }
    }

    string output = valueBuilder.ToString();

}

valueBuilder给出结果为= {AAAA，BBBB，CCCC}

输出结果为=AAAA，BBBB，\CCCC



我希望输出为：AAAA，BBBB，CCCC



请帮助。

valueBuilder gives result as = {AAAA,"BBBB,"CCCC}
output gives result as = "AAAA,"BBBB,\"CCCC"

I want the output as : "AAAA","BBBB", "CCCC"

Please help.

解决方案

这是一个可能更简单的解决方案：

Here's a potentially simpler solution:

int valueCounter = 0;
foreach (var value in values)
{
  valueBuilder.Append('"');
  valueBuilder.Append(values[valueCounter].ToString());
  valueBuilder.Append("\",");
  ++valueCounter;
}

// Remove last comma if the StringBuilder has content.
if (valueBuilder.Length > 0)
  --valueBuilder.Length;

出现问题是因为您没有添加结束报价以双引号开头的字段。因此，当StringBuilder将其转换为字符串时，它会尝试转义浮动引号字符。



我怀疑你正在查看调试器中的变量，而不是比你的代码的实际输出。



但是我怀疑你的代码应该在字段之后以及之前添加引号，如：

The problem occurs because you do not add a closing quote to the field that begins with a double quote. So when StringBuilder converts it to a string it tries to escape the floating quote character.

I suspect you are looking at the variables in the debugger, rather than the actual output of your code.

However I suspect your code should be adding quotes after the fields as well as before them like:

if ((valueCounter - 1) > 0)
    valueBuilder.Append("\"");
valueBuilder.Append(values[valueCounter - 1].ToString());
if ((valueCounter - 1) > 0)
    valueBuilder.Append("\"");

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