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TCS ADO.NET Interview Questions
Questions Answers Views Company eMail

Advantage of ADO.Net?

 2 10580

How would u connect to database using .NET?

 5 8870

Difference between DataReader and DataAdapter / DataSet and DataAdapter?

 3 31424

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

 1 19156

Differences between dataset.clone and dataset.copy?

 2 6995

What are the two fundamental objects in ADO.NET?

 8 21597

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

 2306

Call a stored procedure from ado.net and pass parameter to it ?

 7 22462

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

 1 10835

What does ADO.NET consists of ?

 7 11989

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

 3 7571

What is ODP.NET ?

 1 8568

What provider ADO.net use by default?

 10 21094

What is the default view of Data Grid?

 5 12887

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 15018

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TCS ADO.NET Interview Questions


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