C#

static bool CharacterNeedsEscape(char c)
static bool CharacterNeedsEscape(char c)
{
    return c > '~' || c < ' ';
}pre>

Now the text node handling code checks each character in turn, if an escape is not needed the raw character is written, otherwise the <code>WriteCharEntity</code> method is called.

<pre>if (reader.NodeType == XmlNodeType.Text)
{
    string startingString = SecurityElement.Escape(reader.Value);
    char[] chars = startingString.ToCharArray();

    for (int i = 0; i < chars.Length; i++)
    {
        char c = chars[i];
        if (!CharacterNeedsEscape(c))
            writer.WriteRaw(chars, i, 1);
        else
            writer.WriteCharEntity(c);
    }
    return;
}

Sunil G wrote:

I dont have depth knowledge.
can u explain how to look into inner exception?

void sendEmail(string strFrom
                             , string strTo
                             , string strSubject
                             , string strBody)
        {
            /// Author, Md. Marufuzzaman
            /// Created,
            /// Local dependency, Microsoft .Net framework 
            /// Description, Send an email using (SMTP).           

            MailMessage objMailMessage = new MailMessage();
            System.Net.NetworkCredential objSMTPUserInfo = 
				new System.Net.NetworkCredential();
            SmtpClient objSmtpClient = new SmtpClient();

            try
            {
                objMailMessage.From = new MailAddress(strFrom);
                objMailMessage.To.Add(new MailAddress(strTo));
                objMailMessage.Subject = strSubject;
                objMailMessage.Body = strBody;

                objSmtpClient = new SmtpClient("172.0.0.1"); /// Server IP
                objSMTPUserInfo = new System.Net.NetworkCredential
				("User name", "Password","Domain");
                objSmtpClient.Credentials = objSMTPUserInfo;
                objSmtpClient.UseDefaultCredentials = false;
                objSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;

                objSmtpClient.Send(objMailMessage);
            }
            catch (Exception ex)
            { MessageBox.Show (ex.Message.Tostring()); }

            finally
            {
                objMailMessage = null;
                objSMTPUserInfo = null;
                objSmtpClient = null;
            }
        }