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TCS ADO.NET Interview Questions
Questions Answers Views Company eMail

Advantage of ADO.Net?

2 9151

How would u connect to database using .NET?

5 6743

Difference between DataReader and DataAdapter / DataSet and DataAdapter?

3 29673

What are the differences between RAW, AUTO and Explicit modes in retrieving data from SQL Server in XML format?

1 17991

Differences between dataset.clone and dataset.copy?

2 5702

What are the two fundamental objects in ADO.NET?

8 18692

how can implement dropdownlist in particular of dataset when try to update?


Call a stored procedure from and pass parameter to it ?

7 19907

Where does ADO.NET and XML web services come in the architecture ?

1 9979

What does ADO.NET consists of ?

7 9816

What is the key feature of ADO.NET compared to ADO ?

3 6138

What is ODP.NET ?

1 7550

What provider use by default?

10 17727

What is the default view of Data Grid?

5 10721

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();

2 13787

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TCS ADO.NET Interview Questions

Un-Answered Questions

Tell me what is user properties? Why we using the user properties?


Which equipment category is used to represent laboratory equipment?


Does toad work with postgres?


What is the difference between rely clause and guarantee?


Is quicksort a stable sorting algorithm?


Explain the drawback of wep?


In Crystal Reports, When i modified the document based on the user request. where the document will be saved in crystal reports and How user identified either the developer was modified the requirement or not? Please suggest..!


What is pointer to pointer in c language?


What is meant by excel services?


What is an immutable object? How can it help in writing a concurrent application?


What are your favourite subjects in your graduation and why?


How much quantity of cement and sand required for the inlining of 610mm dia MS pipe 8.7mm thk.Inlining thickness is 10mm and CM ratio is 1:1.5.


Explain Porters model of competitive strategies. Is it possibl for a company to have sustainable competitive advantage when its industry becomes hyper competitive


What are the events by which we can program 'help texts' and display 'possible value lists'?


Why null is not allowed in treemap?