ADO.NET :: Create A Connectionstring On Runtime Error

Aug 15, 2010

SqlConnection conn = new SqlConnection("Persist Security Info=True;Data Source="+txtdatasource.Text+";database="+txtDBName.Text+"; User ID="+txtDBUsername.Text+";password="+txtDBPass.Text);
conn.Open();
SqlCommand cmd =new SqlCommand("SELECT [ItemCode],[ClientDescription] FROM ["+txtDBName.Text+"].[dbo].[Bookings]");
cmd.ExecuteNonQuery();

This gets the folowing error ExecuteNonQuery: Connection property has not been initialized. i know it connects to the database

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