ADO.NET Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

ADO.NET Interview Questions

Questions Answers Views Company eMail

OleDbDataAdapter ole=new OleDbDataAdapter(new OleDbCommand ("select * from login",oleDbConnection1)); OleDbCommandBuilder cmd=new OleDbCommandBuilder(ole); ole.Fill(dataSet11,"login"); DataRow drow=dataSet11.Tables ["login"].NewRow(); drow[0]=textBox1.Text; drow[1]=textBox2.Text; drow[2]=textBox3.Text; dataSet11.Tables["login"].Rows.Add (drow); ole.UpdateCommand=cmd.GetUpdateCommand(); ole.Update(dataSet11,"login"); MessageBox.Show("one row added"); this gives exception.how to solve it

Nimaya,

1 5378

oledbdataadpter with ms access in c#.net giving exception System.Data.OleDb.OleDbException while writing adapter.update(dataset,"tabname"); how to update the database from dataset?

Infosys, Wipro,

2335

make a login control??

1 3980

how to add a selected row of a gridview to another gridview without reloading the page??

2 5809

what is connection pooling ?

Vertex,

3 7582

What is the Magic Tables in Sqlserver2000?

IBM, SQL Star,

7 11060

What is reference by value how does it works in .net?

SQL Star,

2 5424

How to Handle the exceptions in Sqlsrver2000

SQL Star,

3 7136

The answers which posted above is not satisfied my requirement? Can some one post teh exact answer? Thanx

1970

What are the attirbutes of DataSet?

IBM,

5 11053

What are the Different layers in ADO.Net?

eXensys,

10 18715

i have two textboxes one for user name and another for password . i have a table name compare(which contains name,passwod etc.,)my doubt is how compare username textbox with name column and how compare password textbox with passwod column. i want the code

Wipro,

9 17587

types of Store procedure in Sqlserver2000?

4 10597

what purpose of Indexing creating? directly we can search the reqired row with the help of query?what is the use of indexing?

3 13627

explain connection less and with connection?diference between data reader,data set,data adapter? can we use data reader,data set in a single application? if yes explain with simple code,if no explain?

Techno Labs,

3 16923

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Un-Answered Questions { ADO.NET }

How can we load multiple tables in a dataset?

1093

What are the ado.net objects?

892

Which is better ole db or odbc?

858

What is commandbuilder in ado.net?

956

What Is Difference Between Ado And Ado.net?

979

Explain the namespaces in which .net has the data functionality class.

1011

What is ambient transaction?

889

What is defaultview in datatable?

989

What is the difference between data grid and data repeater?

1005

How does entity framework work?

857

What is the use of ADO.NET and XML web services?

984

What is csdl entity framework?

974

Explain how can we load multiple tables in to dataset?

900

What is the use of data grid?

906

Which is faster datareader or dataadapter?

937

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