C#转义符

大括号转义

{{

双引号转义

""

字符串格式化

var str = string.Format(@"
                {{
	            ""userName"": ""{1}"",
                ""password"": ""{2}"",
                ""returnUrl"": "" / WebHmi/#Alarms"",
                ""setAuthCookie"": true
                }}
                ", _user, _password);