<HeaderTemplate>
<input id="chkAll"
onclick="javascript:SelectchooseAllCheckboxes(this);"
runat="server" type="checkbox" />
</HeaderTemplate>
Dll Hell refers to a set of problems caused when multiple
applications attempt to share a common component like a
dynamic link library (DLL). The reason for this issue was
that the version information about the different components
of an application was not recorded by the system.
| C# 4.0 |
C# 3.5 |
|
C# 4.0 supports dynamic programming through dynamic objects. |
C# 3.5 does not support dynamic programming. |
|
In C# 4.0, dynamic keyword is associated with objects to represent them as dynamic objects. |
The dynamic keyword is not recognized in C# 3.5. |
|
C# 4.0 allows creation of dynamic variables. |
Dynamic variables cannot be created in C# 3.5. |
|
In C# 4.0, the method parameters can be specified with default values using optional parameters. |
In C# 3.5, method parameters cannot be specified with default values. C# 3.5 does not support optional parameters. |
|
C# 4.0 provides named parameters to represent the values of method parameters without following the order of declaration. |
In C# 3.5, method parameters have to be specified in the same order
as in method declaration in the method call. C# 3.5 does not provide
named parameters. |
|
In C# 4.0, usage of ref keyword is optional while executing methods which are supplied by the COM interfaces. |
In C# 3.5, usage of ref keyword is mandatory while executing methods which are supplied by the COM interfaces. |
|
The COM object’s indexed properties are recognized in C# 4.0. |
The COM object’s indexed properties are not recognized in C# 3.5. |
|
C# 4.0 enhances Generics by introducing co-variance and contra-variance. |
Co-variance and contra-variance are not supported in Generics of C# 3.5. |
int n = 1234567; int left = n; int rev = 0; while(left>0) { r = left % 10; rev = rev * 10 + r; left = left / 10; } Console.WriteLine(rev);
Imports System.Data
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles Button1.Click
Dim ds As New DataSet
Dim dt As New DataTable
Dim dr As DataRow
Dim idCoulumn As DataColumn
Dim nameCoulumn As DataColumn
Dim i As Integer
idCoulumn = New DataColumn("ID", Type.GetType("System.Int32"))
nameCoulumn = New DataColumn("Name", Type.GetType("System.String"))
Sub Main()
'Here is Two DataTables.
Dim table1 As DataTable = New DataTable("doctors")
table1.Columns.Add("name")
table1.Columns.Add("id")
table1.Rows.Add("sohan", 1)
table1.Rows.Add("Waris", 2)
<script language="javascript" type="text/javascript">
function validate() {
var result = false;
var upfile = document.getElementById("FileUpload1").value;
if (upfile != "") {
var accept = "png,gif,jpg,jpeg".split(',');
var getExtention = upfile.split('.');
HttpServerUtility.UrlEncode class to encode the URL.name and id is passed to abc.aspx page as encoded. string id = "11";
string name = "abc";
string url = string.Format("abc.aspx?{0}&{11}", Server.UrlEncode(id),
Server.UrlEncode(name));
Response.Redirect(url);
<sessionState mode="InProc" /> Storage location:- Asp.net Process memory areaDescription:- This is the default session storage. Session data will be kept in the server memory. InProc
mode is a high performance as it reads from the same processes memory
and it allows you to keep all .NET types. If session mode is not
specified, ASP.NET will use InProc as the default mode.<sessionStatemode="StateServer" stateConnectionStrin
g= "tcpip=Yourservername:42424" />
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="CahceUserControl.ascx.cs" Inherits="CahceUseControl" %> <%@ OutputCache Duration="5" VaryByParam="None" %> <p><asp:Label ID="lblTime" runat="server" EnableViewState="false" ForeColor="GradientActiveCaption" /></p>
SELECT column1, column2, ... column_n, aggregate_function (expression)aggregate_function can be a function such as sum , count, Min and Max.
FROM tables
WHERE predicates
GROUP BY column1, column2, ... column_n;
SELECT TOP 1 salaries
FROM (
SELECT DISTINCT TOP 6 salaries
FROM employee
ORDER BY salary DESC) a
ORDER BY salaryusing System;class whileloops
| S.No. | Silverlight | WPF |
| Definition | The Silverlight is Microsoft's latest development platform for building next-generation Web client applications. | The
Windows Presentation Foundation (WPF) is Microsoft's latest development
platform for building next-generation Windows client applications. |
| Subset of | Silverlight
is generally considered to be a subset of WPF and is a XAML-based
technology that runs within the sandbox of browser plug-in. | WPF is generally considered to be a subset of .NET Framework and is a XMAL based technology. |
| GUI | Silverlight will be used in development of Rich Internet Application (RIA) for web client users | WPF will be used in development of Rich Windows Graphical User Interface(GUI) for windows client users |
Stateless, which means a new instance of the web page class is re-created each time the page is posted to the server. As we all know HTTP is a stateless protocol, it can't hold the client information on page. If user inserts some information, and move to the next page, that data will be lost and user would not able to retrieve the information. So what we need? we need to store information. Session provides that facility to store information on server memory. It can support any type of object to store along with our custom object. For every client Session data store separately, means session data is stored as per client basis. Have a look at the following diagram.| Feature | Interface | Abstract class |
| Multiple inheritance | A class may inherit several interfaces. | A class may inherit only one abstract class. |
| Default implementation | An interface cannot provide any code, just the signature. | An abstract class can provide complete, default code and/or just the details that have to be overridden. |
<system.web> <httpRuntime executionTimeout="240" maxRequestLength="20480" /> </system.web>
Write this code on javacript to disabling right click:-
<script language="javascript">
document.onmousedown=disableclick;
status="Right Click Disabled";
Function disableclick(e)
{
if(event.button==2)
{
alert(status);
return false;
}
}
</script>