if you want to ask user before closing popup window or you want to perform certain operation before window gets closed, you can use below code for that:window.onbeforeunload = function (evt) { var message = 'Are you sure you want to leave?'; if (typeof evt == 'undefined') { evt = window.event; } if (evt) { evt.returnValue = message; } return message;} Solution by:Rajesh Rol...
Wednesday, September 29, 2010
Thursday, September 23, 2010
Load XML using javascript [works with all browser]
When ever we wants to load and parse xml using javascript. we face a issue most of time is that the script works with one browser but not works with other.Below script will work on all browsers including [safari,mizila firefox, crome]:function loadxml() { var xmlFeed = "xmldata/wfc20100915.xml"; if (window.ActiveXObject) { var errorHappendHere = "Check Browser and security settings"; xmlDoc...
Sunday, September 19, 2010
Timer in javascript
With JavaScript, it is possible to execute some code after a specified time-interval. This is called timing events.It's very easy to time events in JavaScript. The two key methods that are used are: * setTimeout() - executes a code some time in the future * clearTimeout() - cancels the setTimeout()Note: The setTimeout() and clearTimeout() are both methods of the HTML DOM Window object.The setTimeout() MethodSyntaxvar t=setTimeout("javascript...
Friday, September 17, 2010
How to: add 'Tweet This' button to Asp.net Webpage/website
You can add your own ‘Tweet This’ buttons to you webpage/website so that your visitors can post to twitter (complete with URL shortening using Bit.ly) is really easy.step 1:go to solution exproler and add a webpage (i have given it name:MyTwitterPage).step 2:remove all the HTML from the page.step 3:Add below code in code behind file:Imports System.NetPartial Public Class MyTwitterPage Inherits System.Web.UI.Page Protected...
Determine which columns have been modified as a result of an UPDATE operation
we can Determine which columns have been modified as a result of an UPDATE operation using CLR Triggers, this is its one of unique capabilities.Unique Capabilities of CLR TriggersTriggers written in Transact-SQL have the capability of determining which columns from the firing view or table have been updated by using the UPDATE(column) and COLUMNS_UPDATED() functions.Triggers written in a CLR language differ from other CLR integration...
error: Execution of user code in the .NET Framework is disabled. Enable clr enabled configuration option
when you creates sql server clr project in visual studio and then when you wants to run stored procedure created using that clr project in sql server then you will get below error because by default sql server's CLR is not enabled:error: Execution of user code in the .NET Framework is disabled. Enable clr enabled configuration option.By default .NET Framwork is disabled in SQL2005.How to fix:1. Explore "SQL Server 2005/Configuration...
Crystal Reports .NET Error - "Access to report file denied. Another program may be using it."
Crystal Reports .NET Error - "Access to report file denied. Another program may be using it."From the been there, done that, beat my head against the wall until I figured it out file:This is a very misleading error message, and usually has nothing to do with another program. The actual filename will differ based on your configuration, but the entire error message will be the same, similar to what's shown below. Error in File...
Thursday, September 16, 2010
Convert String to Date
To convert string to date You either specify a culture that uses that specific format :like we want to convert string date "dd/MM/yyyy" to Date..datetime mydate = Convert.ToDateTime( txtdate.Text, CultureInfo.GetCulture("en-GB"));or use the ParseExact method:datetime mydate = DateTime.ParseExact( txtdate.Text, "dd/MM/yyyy", CultureInfo.Invariant);The ParseExact method only accepts that specific format, while the Convert.ToDateTime...
Tuesday, September 14, 2010
how to provide functionality to a Windows user based on the user rights that have been granted to the Windows user account.
You can design the Windows Form to accept the user name and password at runtime by using TextBox controls. Then, you can make the application verify the Windows user's user rights when the Windows user clicks a Button control. To do this, follow these steps: 1. Open form 2. from Toolbox,add two textbox to you form. 3. Add a button on form. 4. add a form2 in application 5. Add a Button control to the Form2 form. 6....
Free Download IP latitude longitude database
For various projects we need database of IP , latitude , longitude to locate city and country... here you can find it.the best one :http://ipinfodb.com/ip_database.phpthis is also good:http://www.maxmind.com/app/geolitecitySolutions by:Rajesh Rol...
Sunday, September 12, 2010
What is difference between Abstract and virtual keywords
Abstract differs from virtual in that a virtual method can have an overridable implementation whereas an abstract method has no implementation at all and, as such, abstract methods must be implemented in any derived classes but with virtual keyword its not essential to override that function in derived class but it allow derived class to override that function.Solution by:Rajesh Rol...
Friday, September 10, 2010
Get list of variables names in class
Sometimes we have lots of fields in a class and we want the field names.. in that situation we can get list of all field names using below code:in below code "YourType" will be your class name of which fields name list you want.for vs2008:var fields = typeof(YourType).GetFields( BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);var names = Array.ConvertAll(fields, field => field.Name);for vs2005:FieldInfo[]...
Memory Allocation and Disposal
Memory AllocationThe Common Language Runtime allocates memory for objects in two places: the stack and the heap. The stack is a simple first-in last-out memory structure, and is highly efficient. When a method is invoked, the CLR bookmarks the top of the stack. The method then pushes data onto the stack as it executes. When the method completes, the CLR just resets the stack to its previous bookmark—“popping” all the method’s...
What is difference between interface and abstract class
In C# there is no multiple inheritance. You can only inherit from one baseclass, however you can implement multiple interfaces. An abstract base classcan't be directly instantiated, but it can implement code an interface canonly define it. A class that inherits from an abstract base class can chooseto override members or not (unless they are abstract themselves). Allmembers of an interface must be implemented.Much of the time...
What is difference between Singleton pattern and static class
Both can be invoked without instantiation, both provide only with one "instance" and neither of them is threadsafe.Usually both should be implemented to be thread-safe.The big difference between a singleton and a bunch of static methods is that singletons can implement interfaces (or derive from useful base classes, although that's less common IME), so you can pass around the singleton as if it were "just another" implementation.Advantages...
What are the benefits of MVC architecture over N-Tier architecture
15 down vote accepted N-tier architecture usually has each layer separated by the network. I.E. the presentation layer is on some web servers, then that talks to backend app servers over the network for business logic, then that talks to a database server, again over the network, and maybe the app server also calls out to some remote services (say Authorize.net for payment processing).MVC is a programming design pattern where...
Can we use virtual keyword with functions in interface
This is no need to use virtual keyword with functions of interface as it is by default made to overrid...
What is difference between Custom Controls and User Controls
Difference between user controls and custom controls in .net (vb, c# net with asp.net)User controls:It is newly concept in .net it same like as inheritance concept in oopsIn asp.net the base class is system.web.ui.page objectWhen ever creating user control that will be converting as a class, and this class becomeSubclasses of System.web.ui.page class at compile timeUser control extension with .ascxLet us see program how build...
What is XHTML? what is its advantages
XHTML Elements Must Be Properly NestedIn HTML, some elements can be improperly nested within each other, like this:< b >< i >This text is bold and italic< /b >< /i >In XHTML, all elements must be properly nested within each other, like this:< b >< i >This text is bold and italic< /i >< /b >Note: A common mistake with nested lists, is to forget that the inside list must be within...
What is procedure to host WCF webservices
WCF is a flagship product from Microsoft for developing distributed application using SOA. Prior to WCF traditional ASMX Web services were hosted only on Internet Information Services (IIS). The hosting options for WCF services are significantly enhanced from Microsoft .NET Framework 3.0 onwards. In WCF there are three main parts: Service, Endpoints and Hosting Environment. Multiple services can be hosted using a single host...
How many type of Styles in SilverLight
A Style is a collection of property values that you can apply to an element in one step. A style allows us to encapsulate control property values as a reusable resource. Silverlight supports only explicit styles. Styles are similar to CSS (Cascading Style Sheet) standard in HTML markup. We can set different properties for an element and store it in a name and then we can re-use it in our application. Before going to create a...
When "VAR" becomes of type
Means when let say we have written below code:Var i = 10; so when i will become an integer at run-time or at compile tim...
Thursday, September 9, 2010
Structure are Reference type or value type
Structures are value type.Structs are value types, while classes are reference types, and the runtime deals with the two in different waysWhen a value-type instance is created, a single space in memory is allocated to store the value. Primitive types such as int, float, bool and char are also value types, and work in the same way. When the runtime deals with a value type, it's dealing directly with its underlying data and this...
Primitives are reference type or value type
Primitive types such as int, float, bool and char are value ty...
Overriding in Interface is possible or Not
lets say we have 2 interfaces interface1 and interface2.. and the interface2 is inherits the interface1 than is it possible to having same function name and signature (overriding) in tha...
Wednesday, September 8, 2010
Convert HTML to Doc in asp.net
using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Text;Finally, paste the following code in the button click eventListing 2HttpContext.Current.Response.Clear();HttpContext.Current.Response.Charset =""; HttpContext.Current.Response.ContentType...
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