expandoobject

Why the deduced return type of a method with a ExpandoObject parameter is always dynamic?

牧云@^-^@ 提交于 2021-02-11 15:22:15
问题 As code snippet below, why the deduced type of list is dynamic in VS2017? Thus, this code will produce compile error. And I notice that if I change the dynamic keyword to var , then everything is OK. How to fix it if I want to keep using dynamic keyword? class Program { static void Main(string[] args) { dynamic d = new ExpandoObject(); var list = GetList(d); // ===> vs deduced list as dynamic var r = list.Select(x => x.Replace("a", "_")); var slist = new List<string>(); var sr = slist.Select

How can I use a List<Dynamic> as with DataGridView.DataSource? [closed]

白昼怎懂夜的黑 提交于 2021-02-08 12:05:59
问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . Improve this question I'm trying to bind a List<dynamic> to a DataGridView DataSource property. While there are no errors when compiling there are no columns being displayed either. If I pre-create the column I get the rows to display, but there's no data in them. Simply put, how can I properly use a

“Keyword 'this' is not valid in a static property, static method, or static field initializer” when adding methods to an ExpandoObject

隐身守侯 提交于 2021-02-07 01:35:07
问题 I am try to add a dynamic method to ExpandoObject which would return the properties (added dynamically) to it, however it's always giving me error. Is something wrong I am doing here? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Dynamic; namespace DynamicDemo { class ExpandoFun { public static void Main() { Console.WriteLine("Fun with Expandos..."); dynamic student = new ExpandoObject(); student.FirstName = "John"; student.LastName = "Doe"

“Keyword 'this' is not valid in a static property, static method, or static field initializer” when adding methods to an ExpandoObject

扶醉桌前 提交于 2021-02-07 01:31:22
问题 I am try to add a dynamic method to ExpandoObject which would return the properties (added dynamically) to it, however it's always giving me error. Is something wrong I am doing here? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Dynamic; namespace DynamicDemo { class ExpandoFun { public static void Main() { Console.WriteLine("Fun with Expandos..."); dynamic student = new ExpandoObject(); student.FirstName = "John"; student.LastName = "Doe"

“Keyword 'this' is not valid in a static property, static method, or static field initializer” when adding methods to an ExpandoObject

半腔热情 提交于 2021-02-07 01:28:01
问题 I am try to add a dynamic method to ExpandoObject which would return the properties (added dynamically) to it, however it's always giving me error. Is something wrong I am doing here? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Dynamic; namespace DynamicDemo { class ExpandoFun { public static void Main() { Console.WriteLine("Fun with Expandos..."); dynamic student = new ExpandoObject(); student.FirstName = "John"; student.LastName = "Doe"

“Keyword 'this' is not valid in a static property, static method, or static field initializer” when adding methods to an ExpandoObject

╄→гoц情女王★ 提交于 2021-02-07 01:27:59
问题 I am try to add a dynamic method to ExpandoObject which would return the properties (added dynamically) to it, however it's always giving me error. Is something wrong I am doing here? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Dynamic; namespace DynamicDemo { class ExpandoFun { public static void Main() { Console.WriteLine("Fun with Expandos..."); dynamic student = new ExpandoObject(); student.FirstName = "John"; student.LastName = "Doe"

“Keyword 'this' is not valid in a static property, static method, or static field initializer” when adding methods to an ExpandoObject

给你一囗甜甜゛ 提交于 2021-02-07 01:27:00
问题 I am try to add a dynamic method to ExpandoObject which would return the properties (added dynamically) to it, however it's always giving me error. Is something wrong I am doing here? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Dynamic; namespace DynamicDemo { class ExpandoFun { public static void Main() { Console.WriteLine("Fun with Expandos..."); dynamic student = new ExpandoObject(); student.FirstName = "John"; student.LastName = "Doe"

how get value on expando object #

≯℡__Kan透↙ 提交于 2020-04-10 08:31:13
问题 First I read txt files into a folder, and after I hydrated objects with expando Object. But now I would like to get some value from this objects to fill a listview (winforms). private void Form1_Load(object sender, EventArgs e) { string pattern = "FAC*.txt"; var directory = new DirectoryInfo(@"C:\\TestLoadFiles"); var myFile = (from f in directory.GetFiles(pattern) orderby f.LastWriteTime descending select f).First(); hydrate_object_from_metadata("FAC",listBox3); hydrate_object_from_metadata(

How do you convert any C# object to an ExpandoObject? [duplicate]

♀尐吖头ヾ 提交于 2020-02-03 04:16:06
问题 This question already has answers here : Convert class to dynamic and add properties (4 answers) can one convert a dynamic object to an ExpandoObject (c#) (2 answers) How to extend an existing object in c# 4.0 using dynamics (1 answer) Closed 2 years ago . I've read a lot about how ExpandoObject can be used to dynamically create objects from scratch by adding properties, but I haven't yet found how you do the same thing starting from a non-dynamic C# object that you already have. For instance