Convert Date to Integer

public int DateToInt32(DateTime dtCurrent)
{
        int ReturnValue;
        System.Text.StringBuilder sb = new System.Text.StringBuilder();

        sb.Append(dtCurrent.Year.ToString("D4"));
        sb.Append(dtCurrent.Month.ToString("D2"));
        sb.Append(dtCurrent.Day.ToString("D2"));

        ReturnValue = Convert.ToInt32(sb.ToString());

        return ReturnValue;
}

Response.Write(DateToInt32(DateTime.Now));  
20150831