Where The Data Saved

I don€™t understand what
my wrong is. I am trying to save data in to SQL Mobile Database. my Database is included in my project. after saved, i connect that database by VS2005 server explorer to view the data. But I don€™t found any data in Sdf file.
private void cmdSave_Click(object sender, EventArgs e)
{

SqlCeConnection objmycon = new SqlCeConnection(); objmycon.ConnectionString = ("Data Source =" + (System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase) + "\SC.sdf;"));

SqlCeCommand objcmd = new SqlCeCommand();

objcmd.Connection = objmycon;

objcmd.CommandText = "Insert Into BenInfo (BenID, BenName, BenDOB, BenRegDate, BenExpDate) " +

" Values(@BenID, @BenName,@BenDOB,@BenRegDate,@BenExpDate)";

objcmd.Parameters.Add(new SqlCeParameter("@BenID", SqlDbType.NVarChar, 6));
objcmd.Parameters.Add(new SqlCeParameter("@BenName", SqlDbType.NVarChar, 50)); objcmd.Parameters.Add(new SqlCeParameter("@BenDOB", SqlDbType.DateTime, 8));
objcmd.Parameters.Add(new SqlCeParameter("@BenRegDate", SqlDbType.DateTime, 8));
objcmd.Parameters.Add(new SqlCeParameter("@BenExpDate", SqlDbType.DateTime, 8));

objcmd.Parameters["@BenID"].Value = this.txtID.Text;
objcmd.Parameters["@BenName"].Value = this.txtName.Text;
objcmd.Parameters["@BenDOB"].Value = this.dtpDOB.Text;
objcmd.Parameters["@BenRegDate"].Value = this.dtpRegDate.Text; objcmd.Parameters["@BenExpDate"].Value = this.dtpExpDate.Text;

objmycon.Open();

objcmd.ExecuteNonQuery();

MessageBox.Show("Beneficiary Information Save Successfully.");

objmycon.Close();

}

please advice me.. how can i over come this situation....