C# Sql Connection String

connetionString="Data Source=ServerName;
  Initial Catalog=DatabaseName;User ID=UserName;Password=Password"

  cnn = new SqlConnection(connetionString);

Example

string connetionString = null;

            SqlConnection cnn ;

   connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password" 

            cnn = new SqlConnection(connetionString);

            try

            {

                cnn.Open();

                MessageBox.Show ("Connection Open ! ");

                cnn.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show("Can not open connection ! ");

            }