Answer / kamalakannan.a

Datareader is read only or forward only.So it is very fast
to fetch the data from database.

Answer / manikandan

Data reader is usefull when we just want to acccess datas
from the database not when we want to perform DML
operations. and It is usefull when we want to perform
forward only reading of datas.It wont requires any
large volume of resources in the Front end.

Answer / bhushanam

its connection oriented architecture.

Answer / payal

1)it is used for forward record only.

2)we cannot update or save

3)speed is fast than dataset

4)not persist any record

5)it is usefual in case of display data according to
critiera on form using control like textbox,label etc.

who to use

in vb.net
dim sqlcmd as new sqlcmd("select ename from tblemp where
empid=5;
dim dr as new dataReader
dr=sqlcmd.executeReader()
if dr.hasRows then
txtbox1.text(dr("ename"))
end if

this display ename in textbox.

Answer / anitha

Datareader is used to fetch the data frm data source

Explain the difference between vb.net and c#, related to oops concepts?

0 Answers  

---

Explain about rapid application development tool?

0 Answers  

---

what is diffrence constructor and destructor in vb

0 Answers   MCN Solutions,

---

hello friends, I have created a animated button in VB.NET. As its dll file coding can be viewed and also copied to some other location. So my question is how can I protect the Dll file of the animated button so that noone can access it. Any idea about this???????? Thanks Rekha

3 Answers  

---

What are the similarities between class and structure?

5 Answers   Ksb, L&T,

---

---

What is the difference between import system.data.sqlclient and system.data.oledb?

0 Answers  

---

What is the advantages of VB.NET?

0 Answers   NA,

---

i am attending to US consulate i kept my projects on vb.net ,please help me what questions will be ask on vb.net in us consulate

0 Answers  

---

What is the use of errorprovider control?

0 Answers  

---

hello dear friends my problem is that i want to save images that is pictures in SQL server using vb.net can any body help me to do so please

1 Answers  

---

What is the difference between Namespace and Assembly?

0 Answers  

---

i could not run my application in any computers if i want to run it i have to install the full version of visual studio 2005. it is really hard and feel embarrassing in front of the people though i installed .net framework where goes wrong

1 Answers  

---