c#-4.0

问题 What is the difference between Assembly.GetExecutingAssembly() and typeof(program).Assembly ? 回答1: Assuming program is in the executing assembly, they should both return the same value. However, typeof(program).Assembly should have better performance, since Assembly.GetExecutingAssembly() does a stack walk. In a micro benchmark on my machine, the former took about 20ns, while the latter was 30x slower at about 600ns. If you control all the code I think you should always use typeof(program)

问题 I've this exception of type System.AggregateException : Message = "One or more errors occurred." Source = null StackTrace = null It's InnerException is this System.Reflection.TargetInvocationException : Message = "Exception has been thrown by the target of an invocation." Source = "mscorlib" StackTrace = at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj,

问题 I'd like to write a regex that would remove the special characters on following basis: To remove white space character @ , & , ' , ( , ) , < , > or # I have written this regex which removes whitespaces successfully: string username = Regex.Replace(_username, @"\s+", ""); But I'd like to upgrade/change it so that it can remove the characters above that I mentioned. Can someone help me out with this? 回答1: string username = Regex.Replace(_username, @"(\s+|@|&|'|\(|\)|<|>|#)", ""); 回答2: use a

问题 i am dynamically create contents and buttons into my code behind " tree.aspx.cs " page sbmainTbl.AppendFormat("<tr><td><div class=\"a\">{0}<div class=\"details\"<p id=\"p\">{1}</p><ul><li>Parent-UnitId:{2}</li><li>Address :{3}</li><li>City: {4}</li><li>EmailId: {5}</li><li>PhoneNo: {6}</li><li>FaxNo: {7}</li><li><input type=\"button\" value=\"ADD\" onclick=\"f2();\" /></li></ul></div></div></div></td></tr>", CellText(dtparent.Rows[0]["UnitName"].ToString()), CellText(dtparent.Rows[0][

问题 While File Upload i have checked the following thing if !(strExtension == ".jpg" || strExtension == ".jpeg" || strExtension == ".pdf" || strExtension == ".png") Send Error This is working fine, But i have one issue ,if someone uploads a xlsx file by just changing its extension as jpg my uploader will not obstruct it and the file will be saved which is orginally an xlsx file How do i check the file origin. without its extension. Thanks for any help 回答1: Edit: Just use Mime Detective I use byte

问题 With the following C# console application code, I am able to run the process in background using Jenkins. But now I want to see this process in foreground. What wrong I am doing here ? [System.Runtime.InteropServices.DllImport("User32.dll")] private static extern bool SetForegroundWindow(IntPtr handle); [System.Runtime.InteropServices.DllImport("User32.dll")] private static extern bool ShowWindow(IntPtr handle, int nCmdShow); [System.Runtime.InteropServices.DllImport("User32.dll")] private

问题 I am trying to implement DbContext for couple of tables called ' Employee ' and ' Department ' Relationship between Employee and Department is many to one. i.e. department can have many employees. Below are the EntityFramework classes I designed ( CodeFirst approach ) [Table("Employee")] public class Employee { [DatabaseGenerated(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Identity)] public int Id { get; set; } [Column("Name")] public string Name { get; set; } [Column

问题 I am attempting to write a Validation attribute in MVC4. The purpose is to check for the existence of an application reference (just a string that represents a key I wish to prevent a duplicate for). My data is accessed via WebAPI and because I am using 4.5 I wish to make this asynchronous if possible. I am perhaps not making the best or appropriate usage of async and await but I would like to know how to call my async method from the overridden IsValid method of the inherited Validation

问题 I am attempting to write a Validation attribute in MVC4. The purpose is to check for the existence of an application reference (just a string that represents a key I wish to prevent a duplicate for). My data is accessed via WebAPI and because I am using 4.5 I wish to make this asynchronous if possible. I am perhaps not making the best or appropriate usage of async and await but I would like to know how to call my async method from the overridden IsValid method of the inherited Validation

问题 Below is the script I am using to try and execute my powershell script but whenever i run it i just get a blank command window. C# Code static void Main(string[] args) { string text = System.IO.File.ReadAllText(@"C:\Program Files (x86)\Backup Reporter\Required\edit_website.ps1"); using (PowerShell PowerShellInstance = PowerShell.Create()) { // use "AddScript" to add the contents of a script file to the end of the execution pipeline. // use "AddCommand" to add individual commands/cmdlets to