.net-4.0

问题 Our admins unexpectedly migrated a server where my .NET windows service runs (to Windows 2008 ... because of some old apps). It is running under LocalSystem account. The target framework is .NET framework 4 Client Profile. In my service the method DateTime.Parse now throws invalid format exception. When I add to OnStart Thread.CurrentThread.CurrentCulture = new CultureInfo("cs-CZ", false); it gets better, but still in some methods it fails, probably running in different therads. How to

问题 It seems that I have problem changing System.Globalization.CultureInfo.CurrentUICulture value according to the user preferences (.NET 4.0 web application). In my web application, I have two buttons. One for the Greek Language and one for the English language. When the buttons are clicked, a request goes to the server asking to change the user preferred language. For Greek, I send "el-GR" and for English, I send "en-US". On the server side, I use the following piece of code to change the

问题 I am using AspNet Membership Provider in MVC 3. I am facing issue in change password. I have two functionality in my project Forgot password : ask security question and based on security answer change password. Admin change password: a admin can change password of any user without knowing old password or security answer. Now the issue is that for functionality # 1, i have to make changes in web config for making requiresQuestionAndAnswer="true" for change password so that i can change

问题 In an ASP.NET 4 application, I have existing code to access a user's Active Directory information (potentially under Windows Authentication or FBA) like this: // authType taken from run-time config file, default below AuthenticationTypes authType = AuthenticationTypes.Secure; string path = "LDAP://" + domain; DirectoryEntry entry = new DirectoryEntry(path); entry.AuthenticationType = authType; // Bind to the native AdsObject to force authentication. Object obj = entry.NativeObject;

问题 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO; using System.Security.AccessControl; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { string Directoryd = "D:"; string mydirectory = Directoryd + "\\" + "rs\\"; if (!Directory

问题 I'm trying to get a form in my Windows Forms program to be borderless, invisible, and have a PictureBox control in it. The PictureBox image is set to a PNG with an alpha channel to give it a transparent background. What I want is for the form to be completely invisible but I want the PNG with correct transparency to be visible still. This is only going to be for Windows 7 with Aero theme on so any shortcuts Areo can afford me I can use. I tried using a transparency key for the form like so:

问题 I have a question regarding IIS (version 7.5) and ASP.NET (.NET Framework 4) . I am trying to debug ASP.NET web application which is stored on IIS. Now, I have done this in past and everytime it worked perfectly. But now when I try to do same, **Visual Studio 2010** always gives me error, **"unable to start debugging on the web server. the iis worker process for the launched URL is not currently running" ...** even the application I had created in past (& stored in IIS) can't debug using

问题 I'm binding to a List<MyCustomType> and when I put a breakpoint on property getters in MyCustomType , they are seemingly being called repeatedly. What causes the DataGridView to automatically re-read the data and can I control this? Secondly, I note that when I make changes to the data in the grid, these are not immediately replicated to the DataSource. Putting breakpoints on property setters in MyCustomType , they only seem to be called when I click outside the grid control. How can I make

问题 Will a windows application developed in .net 4 which references an assembly developed in .net 3.5, require both .net 4 and .net 3.5 to be installed for the application to run? I suspect so, as is one of my observation. Also, it feels logical as both require different runtime for their execution. [EDIT] I'm enlightened :) So, here's my real question which has remained unanswered for a while here at SO. Would be glad if you guys can figure out the issue! The application's app.config already has

问题 I'm using the Visual Studio 2010 RC for .NET 4.0 and I'm trying to figure out how to do a wildcard comparison with Entity Framework. I'd like to have the following query for EF where I find all the names that start with 'J' select * from Users where FirstName like 'J%' 回答1: from user in Users where user.FirstName.StartsWith("J") select user; 回答2: Use: var query = Users.Where(user => user.FirstName.StartsWith("J")); 回答3: I would refer you to this question, I assume it hasn't changed in .net 4