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How many App Domains an ASP.NET Worker Process creates if suppose 10 different users are logged into the web site
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nishant2200- Member Since Jan-2007 | Jan 7th, 2007
One AppDomain is created in the aspnet_wp.exe worker process per website. Inside that appdomain, user's state is kept separate from each other, and from then on server memory side state management can be segregated on basis of Session, Profile etc.
nishant2200
- Jan 7th, 2007
One AppDomain is created in the aspnet_wp.exe worker process per website. Inside that appdomain, user's state is kept separate from each other, and from then on server memory side state management can be segregated on basis of Session, Profile etc.
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What is meant my datarow versioning in ADO.Net. Where it is used?
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Lavanyaaru- Member Since Jan-2008 | Jan 30th, 2008
There are 3 versions for each DataRow object.
1.Original
2.Current
3.Proposed
The HasVersion( ) method of the DataRow can determine whether a specific version of the row exists. If the version exists, column values for it can be retrieved using one of the three overloads of the DataRow indexer
The Original version contains the values that were loaded into the row.
The Current version contains the latest version of the data, including the changes made since the data was originally loaded. The Original version isn't available for newly created rows.
A Proposed row version is made available while the row is in edit mode and contains the changes that have been made to the row while it was in edit mode
If CancelEdit( ) , RejectChanges() methods are called, the values in the Proposed version are simply discardedLavanyaaru
- Jan 30th, 2008
There are 3 versions for each DataRow object.1.Original2.Current3.ProposedThe HasVersion( ) method of the DataRow can determine whether a specific version of the row exists. If the version e...
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How to connect Oracle database and MS Access to .Net framework?
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seemu123- Member Since May-2008 | Nov 11th, 2008
If you have used OleDB you can use an OleDB connectionstring, if you have
used SQLClient, you have to change it to the OracleClient (standard in
2003).seemu123
- Nov 11th, 2008
If you have used OleDB you can use an OleDB connectionstring, if you have used SQLClient, you have to change it to the OracleClient (standard in 2003).
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Which method do you invoke on the DataAdapter control to load your generated dataset with data?
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deepti705- Member Since Jan-2010 | Jan 2nd, 2010
Fill() method is use to fill the data through DataSource in DataSet
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What is the use of HTTP Handlers in IIS?
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machud- Member Since Apr-2011 | Apr 10th, 2011
HTTP Handlers can be used to process custom requests that may not be in the standard supported format like .htm, .aspx, .asmx etc. One example will be RSS feed processing . One can write .rss? handler which can be configured in the IIS to accept and?delegate the processing to the custom handler written to produce customized output. There are 3 basic steps that need to be performed to make a HTTP handler work properly .
a. Create Handler calss which implements IHttpHandler interface or IHttpAsyncHandler for Asynchrounous handler. IsReusable property and the ProcessRequest method is must be implememented in the Handler class
b. Register the handler class in the web.config file of the application or machine.config
c. Specify the mapping in IIS (Website->Properties->configuration->mappings) add new extension with executable as "C:WINDOWSMicrosoft.NETFrameworkv2.0.50727aspnet_isapi.dll" ( assumes default installation)machud
- Apr 10th, 2011
HTTP Handlers can be used to process custom requests that may not be in the standard supported format like .htm, .aspx, .asmx etc. One example will be RSS feed processing . One can write .rss? handle...
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What is the execution procedure in oracle ?
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sahu- Member Since Dec-2005 | Mar 29th, 2007
Hi,
if you Passing Parameters,
then
Below it will excute
typesql> execute Procedure_name(arg1,arg2,...,arg n);...
if donot pass Parameters
then
typesql> execute Procedure_namesahu
- Mar 29th, 2007
Hi,if you Passing Parameters,then Below it will excutetypesql> execute Procedure_name(arg1,arg2,...,arg n);...if donot pass Parametersthentypesql> execute Procedure_name
RaviKumar
- Oct 28th, 2005
typesql> execute Procedure_name(arg1,arg2,...,arg n);
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What are the advantages and disadvantages of using datalist ?
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spandanapotla- Member Since Mar-2008 | Apr 4th, 2008
Adv: the DataList's display is defined via templates,DataList allows for much more customization of the rendered HTML markup , by which it is more user-friendly displays of data.
DisAdv:
adding such functionality with the DataList takes more development time than with the DataGrid, as- The Edit/Update/Cancel buttons that can be created in a DataGrid via the EditCommandColumn column type, must be manually added to the DataList, and
- The DataGrid BoundColumn column types automatically use a TextBox Web control for the editing interface, whereas with the DataList you must explicitly specify the editing interface for the item being edited via the EditItemTemplate.
spandanapotla
- Apr 4th, 2008
Adv: the DataList's display is defined via templates,DataList allows for much more customization of the rendered HTML markup , by which it is more user-friendly displays of data.DisAdv: adding suc...
gouri
- Aug 29th, 2006
Hi,Datalist is updateable and datareader is not updateable
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How is session dumped in ASP .Net?
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Data Table in ADO.NET
What is Data table in .net and how it is different from table in database (sqlserver)
nikhiljain27
- Jul 13th, 2013
Datatable is one table collection of Rows and columns in ADO.Net. It is a member of the System.Data namespace in the .NET Framework. DataSet is also a combination of multiple DataTable. It works in Disconnected environment. You can Add/ update/ delete records in the Datatable at runtime.
Trapti
- Sep 14th, 2011
The DataTable class is a member of the System.Data namespace within the .NET Framework class library. You can create and use a DataTable independently or as a member of a DataSet, and DataTable object...
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How to find the given query is optimised one or not?
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Answered by: Vishal
- Apr 5th, 2006
You can use Execution Plan in SQL server to see the cost of your querry.By this you can optimised your query.
Pendurti
- Sep 11th, 2008
There is something called Query analyzer that u can make use of to find out whether the given query is optimized or not.
sahu
- Mar 29th, 2007
Hi, First Excute Sql Quries in Query Analzer,see How much time 2 take Excute , if Less then the ur desired Time, then it will Optimize query
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How can we retrieve the value which was selected from a combo box in a datagrid view.
The grid view consists of 3 columns which are combo Boxes. I want the string in the 1st column.
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veluworld- Member Since Jul-2007 | Aug 28th, 2008
((DropDownList)GV_chart.Rows[e.RowIndex].FindControl("Dcity1"));
Here GV_Chart is the id of Grid View And DCity is the Name of the dropdown listveluworld
- Aug 28th, 2008
((DropDownList)GV_chart.Rows[e.RowIndex].FindControl("Dcity1"));Here GV_Chart is the id of Grid View And DCity is the Name of the dropdown list
amitrms
- Jul 14th, 2008
Use this for fetching the values from combo boxfor (int i = 0; i < dataGridView1.Rows.Count; i++) &nbs...
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Explain the differences between ADO and ADO.NET, ASP and ASP.NET , VB and VB.NET
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ramakrishnag1982- Member Since Nov-2006 | Dec 12th, 2007
Asp:
* ASP is Interpreted language based on scripting languages like Jscript or VBScript.
* ASP has Mixed HTML and coding logic.
* Limited development and debugging tools available.
* Limited OOPS support.
* Limited session and application state management.
* Poor Error handling system.
* No in-built support for XML.
* No fully distributed data source support.
Asp.Net:
* ASP.Net is supported by compiler and has compiled language support.
* Separate code and design logic possible.
* Variety of compilers and tools available including the Visual studio.Net.
* Completely Object Oriented.
* Complete session and application state management.
* ?Full proof error handling possible.
* Full XML Support for easy data exchange.
* Fully distributed data source support.ramakrishnag1982
- Dec 12th, 2007
Asp:* ASP is Interpreted language based on scripting languages like Jscript or VBScript. * ASP has Mixed HTML and coding logic. * Limited development and debugging tools available. * Limited OOPS supp...
Guest
- Jan 4th, 2007
ADO1. This object model could be used even for non RDBMS products. We can read data from xml, excel, csv files also.2. ADO objects are dependent on OLEDB providers and OLEDB provider...
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Why can't we use Multiple inheritance and garbage collector parallelly in .net
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Pendurti- Member Since Sep-2008 | Sep 11th, 2008
Well C# doesn't support multiple inheritance through classes.
If you want to have multiple inheritance in your program, you need to make use of interfaces. A class cannot inherit from more than one class but a class can inherit from more than one interfaces. So C# supports multiple inheritance through interfaces.And multiple inheritance and garbage collection can work independent of each other because, in .NET framework, garbage collection is taken care of by CLR. We can also manually invoke garbage collector using gc.collect().Pendurti
- Sep 11th, 2008
Well C# doesn't support multiple inheritance through classes.If you want to have multiple inheritance in your program, you need to make use of interfaces. A class cannot inherit from mor...
Mob: +91 9849255958
- Jan 4th, 2007
Actually, GC is a low-level thread. When it gets activated, all other threads in the applications are put on hold.
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What is the difference between .Net framework and .Net Compact Framework?
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bb.geetha- Member Since May-2008 | Jun 12th, 2008
The .NET Compact Framework is a subset of the .NET Framework designed for small-footprint devices. It includes most, but not all of the base class library available in the full framework.
samina naaz
- Jun 30th, 2010
The .NET Compact Framework is a subset of the .NET Framework designed for small-footprint devices.
ptharak
- Oct 20th, 2008
DataREader is ued for readonly and forward .Dataset is used to either read and WriteWhenever sequential is read needed then you can go for DtaREader , it gives better performance than DataSEt.Using DataSEt you can get entire relationship of the tables and schema.
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How do you connect to SQL Server Database without using sqlclient
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knreddy221- Nov 11th, 2006
Using System.Oledb;OledbConnection con= new OledbConnection ("Provider=SQLOLEDB.1;User Id=sa;Database=Northwind");OledbCommand cmd= new OledbCommand ("select * from table1",con);oledbdatareader dr= new oledbdatareader ();dr= cmd.ExecuteReader();datagrid1.datasource=dr;datagrid1.databind();
lata negi
- Nov 4th, 2011
We have 4 Data Providers to connect to our database: SqlClient = Used only for Sql Server database. OracleClient = Used only for Oracle database. Oledb = Used for any kind of databases either new or o...
Kamal Kant Verma
- Dec 18th, 2006
You can connect sql using oledbname space .
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How many records can take clustured index in sql server
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vvijaychandra- Jun 22nd, 2006
a clustered index is a special type of index that reorders the way the records in the table are physically stored . therefore the table can have only one clustered index.
Pendurti
- Sep 15th, 2008
FYI..Clustered index is something that deals with the columns but not the records.These define the physical sorting of the rows in the database in the storage media.A database table can have utmost on...
ushalakshmi
- Apr 17th, 2008
A clustered index is a special type of index that reorders the way records in the table are physically stored. Clustered index is created by default when we create a primary key on a column.Everyone k...
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Can we connect two datareader to same data source using single connection at same time?
No, we cann't since once connection to database is opened must be closed before you reopen again .
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Answered by: Sathiyavathi
- Mar 24th, 2006
We can do it in ADO.Net 2.0 as
In your connection string there is an additional attribute named as MARS
and set it as true. MARS stands for Multiple Active Result Sets.
Ex :
string connectionString = "Data Source=MSSQL1;" +
"Initial Catalog=AdventureWorks;Integrated Security=SSPI" +
"MultipleActiveResultSets=True";rajankvns
- Sep 18th, 2011
Yes, 100% you can connect. help of-- Multiple Active Result Sets (MARS). more details with Example visit below Microsoft official website. -- http://msdn.microsoft.com/en-us/library/yf1a7f4f%28v=vs....
Ravi
- Sep 16th, 2011
Yes, you can connect two datareader to the same datasource, but one main thing is close the first datareader before using second one then only it's possible. The point is, we can have any number of d...
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Difference between SqlCommand and SqlCommandBuilder
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sahu- Member Since Dec-2005 | Mar 29th, 2007
Hi All,
Ans:
a) SQLCommand is used to execute all kind of SQL queries like DML(Insert, update,Delete) & DDL like(Create table, drop table etc)
b)SQLCommandBuilder object is used to build & execute SQL (DML) queries like select, insert, update & delete.
Lijo
- Nov 10th, 2011
SqlCommand: SqlCommand is used to execute Query involving Select, Update, Delete operation and to Execute SQL Stored procedures SqlCommandBuilder: SqlCommandBuilder provides the feature of refl...
abhi_la2006
- Jul 13th, 2011
Sql command use to only execute dml like update delete insert but sql command builder use the dml as well as the ddl like create database alter etc.
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Database Access
Can we do database operations without using any of the ADO.net objects?This was an interview question
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amitdotchauhan- Member Since Jun-2010 | Jun 15th, 2010
Yes.
1. SQLCMD is the utility which supports command line interface to perform SQL operations. Output data in xml file & do opertions!
Refer http://msdn.microsoft.com/en-us/library/ms162773.aspx2. Alternate way to fetch data is enabling SQL server option which allows to provides data on web in XML format (IDK where it is but yes it was there in SQL 2k). Its data on http so you can read & process it just like a web service but cant perform operations.
I am sure there are other ways too! like
1. Create own database format other then SQL
2. Set up API in other application to fetch/process data in other application & set up custom components to store/process them.
Enjoy!
abhisuch
- Sep 29th, 2010
Accessing data from a database is called as database access. We can access data from database using several techniques such as DAO RDO ADO.NET etc.
amitdotchauhan
- Jun 15th, 2010
Yes.1. SQLCMD is the utility which supports command line interface to perform SQL operations. Output data in xml file & do opertions!Refer http://msdn.microsoft.com/en-us/library/ms162773.aspx2. A...
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What is Partial class
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bb.geetha- Member Since May-2008 | Jun 12th, 2008
A Partial class is a class that can be split into two or more classes. This means that a class can be physically separated into other parts of the class within the same namespace. All the parts must use the partial keyword. All the other classes should also have the same access modifier. At the compile time, all the partial classes will be treated as a single class. Let us list some advantages of having partial classes.
nikhiljain27
- Jul 13th, 2013
Two or more different class having the same name and datatype but physically different from each other. At compile time all the partial class are complied in to one single entity(class) and all the m...
lata negi
- Nov 4th, 2011
Partial class is a new feature added to .NET Framework 2.0. .NET 1.0 or 1.1, does not support for partial classes. It is possible to split the definition of a class or a struct, or an interface over t...
ADO.NET Interview Questions
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Ans