Regex.Matches，非常好

"={(.*?)}(,|$)"可以工作。

string input = "zyx={aaa},yzx={bb b={{b}}bb bbb},yzx={bb b={{b}},bb bbb,},xyz={{ccc} ccc}";

string pattern = "={(.*?)}(,|$)";

var matches = Regex.Matches(input,pattern)
        .Select(m => m.Groups[1].Value)
        .ToList();

foreach (var m in matches) Console.WriteLine(m);

输出

aaa
bb b={{b}}bb bbb
bb b={{b}},{ccc} ccc

Regex.Split，非常好

我认为Regex.Split可能是更好的工具。

tring input = "zyx={aaa},ttt={nasty{t,xyz={{ccc} ccc},zzz={{{{{{{huh?}";
var matches2 = Regex.Split(input,"(^|,)[a-zA-Z]+=",RegexOptions.ExplicitCapture); // Or "(?:^|,)[a-zA-Z]+=" without the flag


Console.WriteLine("-------------------------"); // Adding this to show the empty element (see note below)
foreach (var m in matches2) Console.WriteLine(m);
Console.WriteLine("-------------------------");

-------------------------

{aaa}
{bb b={{b}}bb bbb}
{bb b={{b}},}
{nasty{t,}
{{ccc} ccc}
{{{{{{{huh?}
-------------------------

注意：because中是空元素：

  

如果在输入字符串的开头或结尾找到匹配项，则在返回数组的开头或结尾包含一个空字符串。

案例3

string input = "AAA={aaa},BBB={bbb,bb{{b}},bbb{b}},CCC={ccc},DDD={ddd},EEE={00-99} ";
var matches2 = Regex.Split(input,"(?:^|,)[a-zA-Z]+="); // Or drop '?:' and use RegexOptions.ExplicitCapture

foreach (var m in matches2) Console.WriteLine(m);

{aaa}
{bbb,bbb{b}}
{ccc}
{ddd}
{00-99}