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POError: Object Reference is not set to an instance of object
 

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  1. POError: Object Reference is not set to an instance of object
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    <p>I'm currently developing an application that will give user capability of downloading demo software from link provided by us in his email address. After 24 hours, now I have done through link shown in his email address, and he can download but in the coding of disable of this link .. I'm getting error my code is ..</p> <pre><code>protected void btn_sub_Click(object sender, EventArgs e) { cn.Open(); objInquiry.Name = txt_name.Text.ToString().Trim(); objInquiry.MobileNo = txtMobileNo.Text.ToString().Trim(); objInquiry.EmailId = txt_eid.Text.ToString().Trim(); objInquiry.InquiryFor = "Agriculture Product Marketing comity System".ToString().Trim(); objInquiry.Message = txt_msg.Text.ToString().Trim(); using (DataSet ds = objInquiry.InsertInquiry()) { Msg.Visible = true; Msg.Text = "Thank U For Inquiry We Will Send Demo Link To Your Email Please Check Your Email Regularly"; } try { DateTime dt1 = Convert.ToDateTime(Request.QueryString["period"].ToString()); DateTime dt2 = DateTime.Now; TimeSpan ts = dt2 - dt1; if (ts.TotalMinutes &gt; 5) { Response.Write("Download time is over"); } else { MailMessage mail = new MailMessage(); mail.From = new MailAddress("abc@gmail.com"); mail.To.Add(txt_eid.Text); mail.Subject = txtInquiryFor.Text; mail.IsBodyHtml = true; mail.Body = "Welcome Mr." + txt_name.Text + "&lt;br&gt;&lt;br&gt;"; mail.Body += "To ShreeHans Webnology" + "&lt;br&gt;&lt;br&gt;"; mail.Body += "Thank u for putting inquiry for" + txtInquiryFor.Text + "&lt;br&gt;&lt;br&gt;"; mail.Body += "Please Click on Following Link To Download Your Demo" + "&lt;br&gt;&lt;br&gt;"; mail.Body += "&lt;a href=\"http://www.test.co.in/ConatctUs.aspx?period=" + DateTime.Now + "'\"&gt;Download Demo Software&lt;/a&gt;"; SmtpClient smtp = new SmtpClient(); smtp.Host = "smtp.gmail.com"; smtp.Port = 587; smtp.EnableSsl = true; smtp.Credentials = new System.Net.NetworkCredential("abc@gmail.com", "*****"); smtp.DeliveryMethod = SmtpDeliveryMethod.Network; smtp.Send(mail); } } catch (Exception ex) { ex.ToString(); } </code></pre>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. USmarc_s
    1. USpurvang pandya
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    2. PL
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      1. LTDuplicate
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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      1. PTAnswer
    3. PO
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      1. POError: Object Reference is not set to an instance of object
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POError: Object Reference is not set to an instance of object
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
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      1. POError: Object Reference is not set to an instance of object
      1. This table or related slice is empty.
      1. VTDownMod
    1. COWhat line are you getting the error on?
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      1. POError: Object Reference is not set to an instance of object
      1. USRoy Dictus
    2. COcan you put here the error message you get?
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      1. POError: Object Reference is not set to an instance of object
      1. USHabibillah
    3. CODateTime dt1 = Convert.ToDateTime(Request.QueryString["period"].ToString());
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      1. POError: Object Reference is not set to an instance of object
      1. USpurvang pandya
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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