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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 4162

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,

1478

make a login control??

1 2779

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

2 3944

what is connection pooling ?

Vertex,

3 5598

What is the Magic Tables in Sqlserver2000?

IBM, SQL Star,

7 7443

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

SQL Star,

2 3635

How to Handle the exceptions in Sqlsrver2000

SQL Star,

3 5011

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

1156

What are the attirbutes of DataSet?

IBM,

5 7210

What are the Different layers in ADO.Net?

eXensys,

10 13424

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 12971

types of Store procedure in Sqlserver2000?

4 8080

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

3 11406

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 14940


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Un-Answered Questions { ADO.NET }

What is the meaning of executenonquery?

144


What is ado oledb and odbc?

132


How can we load multiple tables in a dataset?

181


Which object needs to be closed?

287


What is a control toolbox?

136






Why do we use sqldataadapter?

134


Explain the overview of ado.net architecture?

161


What is csdl entity framework?

142


What is the purpose of using adodb?

126


Define different execute methods of ADO.NET command object ?

185


What is ado.net tutorial?

124


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

1156


What is connection string?

165


What is concurrency? How will you avoid concurrency when dealing with dataset? (One user deleted one row after that another user through his dataset was trying to update same row. What will happen? How will you avoid the problem?)

191


What is azure ado?

133