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ADO.NET Interview Questions
Questions Answers Views Company eMail

what is data access layer?

Honeywell,

2 7805

What is the default view of Data Grid?

TCS,

5 13199

what is Sql Native Client?

Gantec Solutions,

5 17158

How To Update A Column In A DataGrid Using C#.NET? I am getting InvalidCastException as (Specified cast is not valid) while updating 2nd column in a datagrid? Id,firstname,lastname are the three columns of my datagrid respectively. I wanted to edit the second column(lastname) and update it. I did the following code in DataGrid's updatecommand(),but failed to update ! Int varid=(int)DataGrid1.DataKeys[e.Item.ItemIndex]; TextBox lnm=(TextBox)e.Item.Cells[2].Controls[0]; string str=lnm.Text ; SqlCommand cmd=new SqlCommand("update customer set lastname='" + str + "' where id=" + varid + "",con); cmd.ExecuteNonQuery(); DataGrid1.EditItemIndex=- 1; DataGrid1.DataBind();

Mind Tree, TCS,

2 15199

what is the syntax code for oldb to connect oracle?

 2 4075

what is execute scalar?

Atharva Infotech, Dohatec New Media, Make eIT, Protech,

11 21474

what is Execute NOn Query?

Infosys, Protech, Sars Systems, SwanSoft Technologies,

29 62421

what is the syntax code for oldb to connect oracle

IBM,

3 5326

what is the syntax code to oledb to connect oracle

IBM,

6 10025

When we are running the Application, if any errors occur in the Stored Procedure then how will the server identify the errors?

HCL,

5 10150

how do u connect ado.net to sql server

Microsystems,

1 5117

how to keep track of index in listbox items.

 2 4979

How do we invoke queries from the application

 2 3645

Why sql Data Reader object not created

Matrix,

9 19845

what is the criteria of selection in sbi interview?

BCS, State Bank Of India SBI,

1 4080

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Un-Answered Questions { ADO.NET }

Where is adodb dll located?

595

How to identify the controls which can be used for binding data?

623

What connected data?

570

What is method to get XML and schema from Dataset? getXML() and get Schema ()

617

What is untyped dataset?

623




What does adodb stand for?

583

What is ado asp?

604

What are the different row versions available in table?

599

Why edit is not possible in repeater?

586

Give few examples of datareader that is used in different dataproviders.

614

What is the use of sqldatareader class?

548

Explain ado.net features?

628

What is a control toolbox?

570

What is sqldatareader in ado.net?

568

Explain the role of data provider in ado.net?

623

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