What is the difference between a datareader and a dataset?
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Give an example that shows how to execute a stored procedure in ado.net?
Difference between function and trigger?
If we are not returning any records from the database, which method is to be used?
What is fill method in ado.net?
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();
What is csdl entity framework?
List all the steps in order, to access a database through ado.net?
What are good ado.net object to replace to ado recordset object.
How do we invoke queries from the application ?
What is sql connection in ado.net?
What is a control toolbox?
List the 4 common ado.net namespaces?
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