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What is the difference between a datareader and a dataset?


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More ADO.NET Interview Questions

Give an example that shows how to execute a stored procedure in ado.net?

0 Answers  


Difference between function and trigger?

1 Answers   HCL,


If we are not returning any records from the database, which method is to be used?

0 Answers  


What is fill method in ado.net?

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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 Answers   Mind Tree, TCS,


What is csdl entity framework?

0 Answers  


List all the steps in order, to access a database through ado.net?

0 Answers  


What are good ado.net object to replace to ado recordset object.

0 Answers  


How do we invoke queries from the application ?

2 Answers   ICICI, Microsoft,


What is sql connection in ado.net?

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What is a control toolbox?

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List the 4 common ado.net namespaces?

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