{"id":3034,"date":"2017-08-04T12:19:00","date_gmt":"2017-08-04T06:49:00","guid":{"rendered":"https:\/\/code4developers.com\/?p=3034"},"modified":"2020-05-07T15:00:02","modified_gmt":"2020-05-07T09:30:02","slug":"expandoobject-in-csharp","status":"publish","type":"post","link":"https:\/\/code4developers.com\/expandoobject-in-csharp\/","title":{"rendered":"ExpandoObject in C#"},"content":{"rendered":"

In this article, I would like to share extensible dynamic object in C#, we all have idea about dynamic and extensible object in scripting language. C# .net 4.0 introducing dynamic type that provides a host of dynamic features for the static C# language. With the dynamic keyword, one interesting object comes out to be ExpandoObject.<\/strong><\/p>\n

ExpandoObject<\/strong><\/h3>\n

C# .NET 4.0 has a cool new ExpandoObject class, in the System.Dynamic namespace. It provides very dynamic object that allows you to add properties and methods on the fly and then access them again.<\/p>\n

For example, you can do like <\/strong><\/p>\n

dynamic school = new ExpandoObject();\r\n\r\nschool.Id = 001;\r\n\r\nschool.Name = \"St.Xavier\";\r\n\r\n\/\/Nested dynamic instance\r\nschool.address = new ExpandoObject();\r\n\r\nschool.address.city = \"Gandhinagar\";\r\n\r\nschool.address.state = \"Gujarat\";\r\n\r\n\/\/Bind dynamic Event\r\nschool.HelloWorld = (Func<string, string>)((string name) =>\r\n{\r\n  return \"Hello \" + name;\r\n});\r\n\r\nConsole.WriteLine(school.Name);\r\nConsole.WriteLine(school.HelloWorld(\".net\"));<\/pre>\n
Real time use:<\/strong><\/p>\n
Before send rest call response if you want to perform any data structure modification like split data in two different formats (no need makes separate class)<\/p>\n
Before send rest call response if you want to set hierarchical data structure of your multiple query output. E.g.:<\/p>\n
Query-1 output with list of state and Query-2 output with list of cities. If you want set output in state>>city hierarchical structure like as below it just possible without making separate class.<\/p>\n
<State>\r\n    <id>1<\/id>\r\n    <name>Gujarat<\/name>\r\n    <city>\r\n        <iscapital>true<\/iscapital>\r\n        <City_Name>Ganhinagar<\/City_Name >\r\n    <\/city>\r\n    <city>\r\n        <iscapital>false<\/iscapital>\r\n        <City_Name>Bhavnagar<\/City_Name >\r\n    <\/city>\r\n<\/state><\/pre>\n
As cool as ExpandoObject<\/strong> is it has a few limitations too:<\/p>\n