Static Method Can Be Declared Inside Interface?
Apr 4, 2010Can we declare a static method inside the Interface?If not means Why?
View 4 Replies
Similar Messages:
Web Forms :: MAIN Method Always Declared As Static In Windows Console Application
Feb 1, 2013While understanding the basic concept of inheritance in internet, i came across a piece of code.
I've seen many people using public static void main().Why dont they simply use public void main() ??What's the advantage of using static here ?
Public class BaseClass {
Public BaseClass () {
Console.WriteLine ("Base Class Constructor executed");
} Public void Write () {
Console.WriteLine ("Write method in Base Class executed");
[Code] .....
Alternative For Static Method In Interface - Enforce Implementing Class-level Methods
Oct 28, 2010I have a hierarchy in my website project as below:
[CustomControl1 - folder]
- CustomControl1.ascx
- CustomControl1.css
- CustomControl1.js
I load css and js files dynamicaly based on which controls are used on particular page. I am doing it by using following code:
[code]....
where AddLinks method adds HtmlLink controls to Page.Header with href attribute set to coresponding css and/or js file.
I would like to add Interface that would force new controls to have AddLinks method but it is impossible since it is a static method. Because my custom controls inherit from Control class I cannot use abstract class and/or virtual methods either. How can I achieve my goal?
Public Static Variable Declared In Public Static Class MyGlobals In A 'Code File' Template?
Jan 27, 2011I have a question about C Sharp ASP.NET:Is there a difference (in code speed, resources) between:public static variable declared in public static class MyGlobals in a 'Code File' template;and the variable declared in a normal 'Class File' template;I use this variable in 2 different Class Files and also in _Default Page codebehind cs file.In fact in my case I need about 20 global variables of type List<string>.
View 9 RepliesC# - How To Lock A Private Static Field Of A Class In One Static Method
Mar 26, 2011I have a private static field in my Controller class in an MVC web application.
I have a static method in that controller that assigns some value to that static field, I want to apply lock on that static field until some other instance method in the controller uses the value stored in the static field and then releases it.
DETAILS:
I have a controller named BaseController having a static ClientId field as follows and two methods as follows:-
public static string ClientId = "";
static void OnClientConnected(string clientId, ref Dictionary<string, object> list)
{
list.Add("a", "b");
// I want the ClientId to be locked here, so that it can not be accessed by other requests coming to the server and wait for ClientId to be released:-
BaseController.clientId = clientId;
}
public ActionResult Handler()
{
if (something)
{
// use the static ClientId here
}
// Release the ClientId here, so it can now be used by other web requests coming to the server.
return View();
}
AJAX :: Calling Non-static Methods From A Static Method?
Jun 30, 2010I did some research after posting. All I found was simple examples for no-layer architectures, like connecting to a database from your aspx page, so, in a corporate environment, it is unnaceptable.
I need to call a server-side method (using ASP.NET Ajax) in a 3-layer architecture.
For example, my Default.aspx contains a method LoadProducts().
[Code]....
[Code]....
This cannot change. There is no way to convert Business and Data layers to static.
How can I call the LoadProducts() method using ASP.NET Ajax?
File.OpenText Method Is Not Declared Error?
Mar 25, 2010i have a fileupload control from which i need the path of a text file. After selecting the file,i need to open the file for reading the data from the text file.For this, i used the following code to open the text file.
fp=File.OpenText(FileUpload2.PostedFile.FileName)
This is working fine in my system.The FileUpload2.PostedFile.FileName statement gives the path of the file.The File.OpenText method opens the selected file.But when i run my project in IIS,it gives the following error:
"File.OpenText is not declared."
The FileUpload2.PostedFile.FileName statement is not retrieving the path, it retrieves only only the filename.what could be the reason?
Sort Method Using IComparer Interface?
Oct 17, 2010I am trying to implement sorting in list using IComparer Interface.
If any two values are equal, then there order is not maintained in the list
after using sort function.
Say, I am sorting an Employee object based on Department ID like,
Employee 1 -> Dept ID = 100, Name = "John"
Employee 2 -> Dept ID = 100, Name = "Peter"
Employee 3 -> Dept ID = 100, Name = "Wills"
The output of this after sorting based on Department ID should be
100, John
100, Peter
100, Wills
but the output is
100, Wills
100, Peter
100, John
where the order is getting changed if the values in the sort column are equal.
Is it possible to maintain the order if the elements are equal.
DataSource Controls :: SqlCommand With The SqlConnection Declared Inside Or Out?
Mar 25, 2010I'm trying to determine whether it is better to declare the connection outside with it's own using statement or to create it inside the sqlcommand itself. This is in regards to a single command interaction with the database (no loops).
[Code]....
Or
[Code]....
Forms Data Controls :: Call Interface Method From Within ASPx Page Gridview?
Feb 10, 2011Got a little dilemma I could use some guidance on. I'm trying to call an Interface method that resides in my Business Layer from within the template of a gridview in the same manner as below:
<%# GetEmployee(Eval("EmpId"))%>
i.e. it reads as follows:
<%# BusinessLayer.IEmployee.GetEmployee(Eval("EmpId"))%>
I'm actually getting the following error:
"An object reference is required for the non-static field, method, or property"
Which makes sense as I haven't instantiated as instance of the Interface. So the queston is how do I do it?
Web Forms :: Inheritance And Interface/abstract Method To Be Implemented On Muliple Aspx Pages?
Dec 13, 2010I am working on a asp.net reporting project using crystal reports. I am a little new to working on making the project dynamic or reducing down code.
I have many aspx pages which are using the same logic of collecting input from textboxes and inputing to business logic layer.
I was thinking if someone can suggest me inheritance and interface/abstract method to be implemented on muliple aspx pages?
How To Assign A Value From A C# Static Method To A Label
Feb 5, 2010I have the following static function in c#
public static string Greet(string name)
{
string greeting = "welcome ";
// is it possible to pass this value to a label outside this static method?
string concat = string.Concat(greeting, name);
//error
Label1.text = concat;
//I want to return only the name
return name;
}
As you can see in the comments, I want to retain only the name as the return value, however I want to be able to take out the value of the concat variable to asign it to a label, but when i try the compiler refuses, can it be done? Is there a work around?
Javascript - Access Gridview In Static Method?
Sep 1, 2010I want to access my gridview in the static method? I am doing async call from javascript, I need code for this,
[System.Web.Services.WebMethod()]
public static void bindGrid(string userinfoId, int row)
{
GridView gv;
gv = (GridView)gvParent.Rows[row - 1].FindControl("gvChild");
gv.DataSource = GetProfileData(userinfoId);
gv.DataBind();
}
i want to access grid view,gridview is not static. I want to know, Is their any possiblity for using gridview in static method.? Yes or No.
How To Get Classes To Expose The Same Shared / Static Method
Mar 4, 2010I have a base class with several derived classes. I want all of my derived classes to have the same Public Shared (static) method with their own implementation. How do I do this?
View 3 RepliesC# - Control Reference Static Method Performance?
Jun 10, 2010I have just asked which one is better?Static Vs Non-Static? [URL]I would like to take this discussion one step ahead.Consider If i pass reference of Panel control as parameter to Public static method, will static method still rules in performance?
View 1 RepliesJquery - Ajax - Call Non - Static Method
Aug 11, 2010From client side, I need to call a server method that is not static. For example, I got the following user control ucData (private instance of code-behind) that is Databind in the load event. The server method I need should return ucData.IsValid(). So it can't be static
View 1 RepliesC# - How To Access Singleton Class's Static Method
Nov 17, 2010I have some confusion with singleton class, below are my some points:
1.Can singleton class have static method?,if yes then how we call that methods?
2.what is main difference between Static class and Singleton Class?
I have created my singleton class as follows:
[Code]....
In Above class structure I have created two method one is Static and second is non static, When I am trying to access Static Method it gives me compile time error.
How can I use static method of singleton class?
C# - Calling Response.TransmitFile() From Static Method
Feb 16, 2010I have a number of pages which need to support exporting data to an Excel spreadsheet. I can generate the Excel files just fine, but I'm trying to work out how to abstract this behavior so it's easily reusable from all of the pages where I need it. My current idea is to use a static utility method, as follows:
[Code]....
The click handler where I'm calling SendExcelFile looks like this:
protected void lnkExport_Click(object sender, EventArgs e)
{
List<List<string>> dataList = GatherDataForSpreadsheet();
Utility.SendExcelFile(this, "fileNameForDownload.xlsx", dataList, "MyReports");
}
This code works just fine as an instance method of the calling page. As a static method, though, it doesn't work at all. When I click the button that invokes this, the browser shows the loading animations indefinitely, but never prompts for a file download.
EDIT: If I remove the call to File.Delete() at the end, the method works as expected. Does Response.TransmitFile() do the transfer asynchronously?
EDIT 2: I just needed to call Response.Flush() before I deleted the file.
Accessing Static MVC Controller Method From View
Mar 16, 2011I've got an .aspx page with this in it:
<%@ Import Namespace="System.Web.Mvc" %>
<%= AssetController.ScriptTag("/js/Community/CommunityWizard.js")%>
And I have an AssetController class:
Imports System.Web.Mvc
Public Class AssetController
Inherits Controller
Public Shared Function ScriptTag(ByVal src As String) As String
Return String.Format(
"<script type='text/javascript' src='/js.mvc?src={0}&{1}'></script>",
System.Web.HttpContext.Current.Server.UrlEncode(src),
New BuildVersion().ToString()
)
End Function
End Class
The project has a reference added to the 3.0.0.0 version of System.Web.Mvc assembly. When I try to view the page in a browser, I get a HTTP 500 with this message:
BC30007: Reference required to
assembly 'System.Web.Mvc,
Version=3.0.0.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35'
containing the base class
'System.Web.Mvc.Controller'. Add one to your project.
What gives? I don't understand why I can use this controller everywhere in our ASP.NET Forms/MVC hybrid application, but not in a view. EDIT: In fact, when I type <% System.Web. into the .aspx view, Mvc doesn't even appear in Intellisense!
C# - Get The Name Of The Class Without Instantiating Object Or Having A Static Method?
Feb 22, 2011I hate to see the name of the class used as a string parameter like "FileDownloader" in the code, and I would like to use something like this FileDownloader.Name(), where FileDownloader is name of the class.
Only problem is that I can't find out how to do that without instantiating object or creating a static method...
Is there a way to get a class name in .net without having the object instance and without creating a static method that returns the name of the class?
Web Forms :: Access Control On A Page From A Static Method?
Jun 30, 2010I have a static method and need to get the Textbox text in it. But I get "An object reference is required for the non-static field, method, or property 'Members_ETC_Tab5.TextBox1' " when I use TextBox1.text in the static method so I modified my Method as below
[Code]....
but I see that txtBegin is null. How can this be fxed?
Thread Safety In Parameters Passed To A Static Method
Jan 10, 2011Assuming a static method like below is called from ASP.NET page,can a different thread(b) overwrite the value of s1 after the first line is executed by thread(a)?If so, can assigning parameters to local variables before manipulation solve this?
public static string TestMethod(string s1, string s2, string s3)
{
s1 = s2 + s3;
....
...
return s1;
}
Is there are a simple way to recreate such thread safety related issues?
Web Forms :: Accessing Non-Static Method From Another Class Without Instantiate
Apr 27, 2016I have a class and call class A method by creating class A object
unlike this call Class B method by using class B objectÂ
Code is here below
class A {
public void A1() {
Console.WriteLine("I am from Class A");
}
}
class B {
public void B1() {
Console.WriteLine("I am from Class B");
[Code] .....
C# - How To Call Non-static Page Method With Client AJAX Script
Jan 12, 2010How can this be done? Does this exclude the UpdatePanel functionality when it's done?
View 1 RepliesAJAX :: Calling Static Play Method Doesn't Work?
Aug 26, 2010I have a page with an update contentpanel, with 4 panels inside. Image buttons outside the update panel control control which panel is visible. I am trying to call an animation from a javascript function, but the animation doesn't work, everything else does.
main.aspx:
[Code]....
main.aspx.vb:
[Code]....
web.config:
[Code]....