Question

Hi im creating a program where when the form loads random data will retrieve from the database and my problem is the code for not repeating the data again.
im using vb 2008 and sql database,
programming language : C#

for example:

Data in Database

Word_ID | Word
1 | eye
2 | cheese
3 | mouse

Then form loads it will retrieve random data and display in the label

example output:

cheese

so cheese now will not display on the next random

my code:

SqlConnection conn =
new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\sony\Documents\Visual Studio 2008\Projects\Hangman_Final\Hangman_Final\hangman_db.mdf;Integrated Security=True;User Instance=True");

conn.Open();

SqlCommand command = conn.CreateCommand();
command.CommandText = "SELECT TOP 1 Words from word order by NEWID()";
command.CommandType = CommandType.Text;

SqlDataReader reader = command.ExecuteReader();

// display the results
while (reader.Read())
{
    string output = reader["Words"].ToString();
    label5.Text = output;
}

// close the connection
reader.Close();
conn.Close();

Answer 1

Store words into List<String>. Get an element at random index from the list , print it and remove it.