分段获取字符串

参数为 string1 string2 string3 空格分隔
或者全部用括号 {string1} {string2} {string3}

但是string3有可能不输入
just like     #tr {闲聊} '测试中
or             #tr 谁与争锋更新了 {haha} {update}

                                if (source.StartsWith("{") && source.IndexOf("{")<source.IndexOf("}"))
                                {
                                    pa = source.Substring(source.IndexOf("{")+1,source.IndexOf("}")-source.IndexOf("{")-1);
                                    source = source.Substring(source.IndexOf("}")+1).Trim();
                                }
                                else
                                {
                                    pa = source.Split(" ".ToCharArray(),2)[0];
                                    source = source.Split(" ".ToCharArray(),2)[1].Trim();
                                }
                                if (source.StartsWith("{") && source.IndexOf("{")<source.IndexOf("}"))
                                {
                                    cm = source.Substring(source.IndexOf("{")+1,source.IndexOf("}")-source.IndexOf("{")-1);
                                    source = source.Substring(source.IndexOf("}")+1).Trim();
                                }
                                else
                                {
                                    cm = source.Split(" ".ToCharArray(),2)[0];
                                    if (source.Split(' ').Length<2)
                                        source = "";
                                    else
                                        source = source.Split(" ".ToCharArray(),2)[1].Trim();
                                }
                                if (source.StartsWith("{") && source.IndexOf("{")<source.IndexOf("}"))
                                {
                                    cl = source.Substring(source.IndexOf("{")+1,source.IndexOf("}")-source.IndexOf("{")-1);
                                }
                                else
                                {
                                    cl = source;
                                }

累了，直接把用到的代码复制下来没改变量名