C# 使用正则表达式替换字符，但不替换转义字符

我有一个字符串，我想使用

Regex

将

[

替换为

{

，但是如果

[

被转义，请忽略它，如下所示：

abc[def\[ghi

到

我该怎么做呢？非常感谢！

使用此：

Regex regexObj = new Regex(
    @"(?<=     # Make sure that this is true before the start of the match:
     (?<!\\)   # There is no single backslash,
     (?:\\\\)* # but if there are backslashes, they need to be an even number.
    )          # End of lookbehind assertion.
    \[         # Only then match a bracket", 
    RegexOptions.IgnorePatternWhitespace);

Regex regexObj=新的Regex(
@（？要替换的[you’s want replace]之前是否总是有空格？如果是的话，就用“{”替换“[”。这真的是实际的规则吗？规则不应该是“用大括号替换未替换的括号”？另外，像
[foo]bar{baz\[bam}
”这样的字符串呢？你真的希望结果是
{foo]bar{baz\[bam}
？这个怎么办？
[abc[efg[hij
。应该是：
{abc{efg[hij
还是只替换第一个，所以它变成了
{abc[efg[hij
？@MohamedTarek:我想全部替换，TimPietzcker给了我正确的解决方案！谢谢
Regex regexObj = new Regex(
    @"(?<=     # Make sure that this is true before the start of the match:
     (?<!\\)   # There is no single backslash,
     (?:\\\\)* # but if there are backslashes, they need to be an even number.
    )          # End of lookbehind assertion.
    \[         # Only then match a bracket", 
    RegexOptions.IgnorePatternWhitespace);