Hi.. This is very urgent.. I have three dll files which I want to make them one dll file. Is that possible? And if so, how? Thanks in advance.

You can skip the first two lines : DataGridViewColumn valueColumn = new DataGridViewColumn(); dataGridTicketTypes.Columns.Add( valueColumn );

You can try the following code assuming that the comboBox column is named valueColumn: DataGridViewColumn valueColumn = new DataGridViewColumn(); dataGridTicketTypes.Columns.Add( valueColumn ); DataGridViewRow row = new DataGridViewRow(); DataGridViewComboBoxCell cell = new DataGridViewComboBoxCell(); cell.Items.Add("0"); cell.Items.Add("1"); cell.Items.Add("2"); cell.Items.Add("3"); valueColumn.CellTemplate = cell; int rowIndex = dataGridTicketTypes.Rows.Add( row ); row = dataGridTicketTypes.Rows[ rowIndex ]; Hope it helps. If you have any question contact me. :)

Well.. I'm using a library you can download it from mysql website it's called: MySql Connector Net. It works pretty good for me and it imitates the ADO.NET structure, but I don't know whether there's something special for PDAs. Here is the link: http://dev.mysql.com/downloads/connector/net/5.2.html[^] I'm using version 5.0 and it works fine. You can try the other versions but I know nothing about them. Hope it was useful. :)

Thank you for it, but I've already read it, and I did the same but it didn't work with me, that's why I'm so confused.

I'm trying to do an drag and drop example but it failed. my code is: public partial class Form1 : Form { private String f; public Form1() { InitializeComponent(); f = "D:\\Special"; String[] files = Directory.GetFiles( f ); foreach ( String fi in files ) { listView1.Items.Add( fi ); } } private void listView1_ItemDrag( object sender, ItemDragEventArgs e ) { DoDragDrop( new DataObject( DataFormats.FileDrop, ( ( ListViewItem ) e.Item ).Text ), DragDropEffects.Copy ); } } Please help me, it's very urgent.