Answer Posted / ashokdahiya

We can retrieve data in following ways in .net
1st we have to create connection object through sqlclient or
oledb provider.then open connection
2nd We can choose datacommands or data adapter(by sqlclint
or oledb dataprovider
system.data
system.data.oledb //to oledb adapter
system.data.sqlclient //to sqlclient adapter
dim con as new connection
con=("provider=oledb;initial
catalog=databasename;userid=sa;paswd=;data source=servername;")
con.open
dim query as string="select* from tabel"
dim ad as new oledb.oledbprovider(query,con)
dim ds as dataset
ad.fill(ds)
dim dt as new datatable()
dt=ds.table(0) //is for ist tabel
dim dr() as datarow //it is array becouse it contain all
rows and coulmn for table
dr()=dt.select("") //blank for all coulmns and rows
for i as integer=0 to dr.length-1.tostring
if dr(i)("empid")=textbox.text then
listbox1.items.add(dr(i)("firstname")&
dr(i)("lastname")& dr(i)("email"))
//it will add records of perticular row that matches to the
textbox text in listbox.suppose u enter a001 if it is valide
id then the all records of a001 r added into the list box.//
next

it will work fine.try thanks

What are two important objects of ADO.Net?

551

---

What is data relation in ado.net?

510

---

Explain the difference in an abstract class and an interface?

497

---

What are disadvantages of microsoft-provided data provider classes in ado.net?

496

---

What is connected architecture in ado.net?

515

---

---

What is ole2 format?

495

---

What is difference between Dataview and Datatable?

524

---

What are the advantages of using datalist?

500

---

What is connection pooling and what is the maximum pool size in ado.net connection string?

510

---

What is the purpose of using adodb?

498

---

How to generate a single aggregate?

535

---

What is difference between ado.net and asp net?

508

---

What is disconnected data?

577

---

Which is faster entity framework or ado.net?

495

---

What are the pre-requisites for connection pooling?

529

---