dynamic

问题 why and how this works in the below code dynamic x = ( c== 'a') ? new D1() :x= new D2(); but not this dynamic x = ( c== 'a') ? new D1() : new D2(); Code class Program { static void Main(string[] args) { var c = Console.ReadKey().KeyChar; dynamic x = ( c== 'a') ? new D1() :x= new D2(); x.Print(); Console.ReadKey(); } } class D1 { public void Print() { Console.WriteLine("D1"); } } class D2 { public void Print() { Console.WriteLine("D2"); } } 回答1: This has nothing to do with dynamic. This is

问题 I have this code // IQueryable<General> query if (columnName == "Column1") { query = query.Where(x => x.Column1 == searchValue); } else if (columnName == "Column2") { query = query.Where(x => x.Column2 == searchValue); } else if (columnName == "Column3") { query = query.Where(x => x.Column3 == searchValue); } else if (columnName == "Column4") { query = query.Where(x => x.Column4 == searchValue); } // next zilions columns to come // ... and my question is. How can i past x.Column as a

问题 Disclaimer: I'm doing this for learning purposes. This is not going to be used in code. I'm trying to understand how method table are structure for generics, I want to dynamically appending to methods at runtime. I found a very useful stack overflow question reference for getting me started. I have a simple controller which I'm using as a test to verify my methods are swapping: public class ValuesController : ControllerBase { static ValuesController() { var methodToReplace = typeof

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 8 years ago . I have learned and checked the advantages of dynamic keyword in C# 4. Can any body tell me the disadvantages of this. Means dynamic vs Var / Object / reflection ??? Which thing is batter more. Is dynamic more

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 months ago . I am curious to learn if .NET supports any form of dynamic interception of method calls (or properties invocations) at runtime. That is, can you intercept a call to an object without static compilation information such as an interface (along the lines of the CORBA DII (link text) or COM's IDispatch). If not,

问题 I have a page for creation of dynamic entities. <%@ Page Title="" Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> ... I have two actions: public ActionResult Create() { dynamic model = ... return View(model); } [HttpPost] public ActionResult Create(dynamic(1) entity) { ... } Well, the problem is that the entity comes empty from the page. If I change dynamic in (1) for the real type it works fine. 回答1: I'm not 100% on this, but I think the problem is that the default model binder

问题 I am trying to change the position of <div class="BannerRedesign" id="Banner" style="position: fixed ! important; height: 36px ! important; width: 100% ! important;"> <div class="BannerCenterContainer" id="NavigationRedesignBannerContainer"> (roblox banner element, trying to make it not float) to relative using Greasemonkey, with all privileges enabled. But, every time, at the end of the loading of the document, it reverts to floating. I even tried appending bannercentercontainer to a

问题 I've a pop-up to display the user list which would display 10 results per page, which is working fine. I'm getting the page nos. from the java servlet in the JSON. How do I disable the previous button, when it is the first page? Likewise, how do I disable the last button, when it is the last page? Here's my code. function userList(pageNo) { var resType="userList"; createTable(resType,pageNo); $(document).on('click', '.next-btn', function(){ var next = 10+pageNo; userList(next); }); $(document

问题 I want to make a table layout as shown in the below screen: I am able to make this UI using the code. But I want to make it using the XML. I tried the following approach. I tried to make a tablelayout which will have header and title. Now I have two row below title which is getting repeated. So I made these two rows in separate XML file named row1 and row2. But Now I don't know how to integrate these three in the code. I know there is method LayoutInflater.inflate() to do it but I have two

问题 I have multiple comboboxes on a tabpage on a tabcontrol on a form. Trying to loop through the controls has not worked (see this). So, I tried to go at it from another angle: finding the controls based on their name. As an initial POC, I just wanted to brute force it by providing the name of one of the combo boxes that is empty at design time ("cmbxRow0Element1") and assign the items from cmbxRow0Element0 to it. But both this attempt: Control ctrl = this.Controls["cmbxRow0Element1"]; ComboBox