Ajax function always calling error function

harry code

7y1.1kAJAX

Hi,

I am trying to read messages from gmail and display them in juery datatable.

Ajax web method is calling error method.

here is the .cs code

public static void getmessage()
{
try
{
List<string> ids = new List<string>();
List mails = new List();
List emaillist = new List();
int count = 1;
using (var ic = new AE.Net.Mail.ImapClient("imap.gmail.com", "[email protected]", "Abc", AE.Net.Mail.AuthMethods.Login, 993, true))
{
ic.SelectMailbox("INBOX");
int y = ic.GetMessageCount();
MailMessage[] mm = ic.GetMessages(0, y);
var msgs = ic.SearchMessages(SearchCondition.Undeleted());
for (int i =0; i < msgs.Length; i++)
{
if (count == 500)
{
break;
}
string msgId = msgs[y-1].Value.Uid;
ids.Add(msgId);
y--;
count++;
}
foreach (string id in ids)
{
mails.Add(ic.GetMessage(id, headersonly: false));
}
//DataTable dt = new DataTable();
foreach (var msg in mails)
{
Email email = new Email();
Attachment attachment = new Attachment();
email.Body= msg.Body.ToString();
email.From = msg.From.ToString();
email.DateSent = msg.Date;
foreach (var att in msg.Attachments)
{
string fName;
fName = att.Filename;
string bo= att.Body;
Attachment a = new Attachment();
a.Content = fName;
email.Attachments.Add(a);
}
//dt.Columns.Add("From", typeof(string));
//dt.Columns.Add("Subject", typeof(string));
//dt.Columns.Add("Date", typeof(DateTime));
//dt.Columns.Add("Body", typeof(string));
//DataRow dr1 = dt.NewRow();
//dr1 = dt.NewRow();
//dr1["From"] = email.From.ToString();
//dr1["Subject"] = email.Subject.ToString();
//dr1["Date"] = email.DateSent;
//dr1["Body"] = email.Body;
//dt.Rows.Add(dr1);
//DataSet ds = new DataSet();
emaillist.Add(email);
}
var js = new JavaScriptSerializer();
HttpContext.Current.Response.Write(js.Serialize(emaillist));
}
}
catch (Exception exe)
{
//MessageBox.Show("Check your network connection");
}
}

here is the sample Jquery code:

$(document).ready(function () {
debugger;
$.ajax({
url: "Reademail.aspx/getmessage",
type: "POST",
dataType: "json",
contentType: "application/json; charset=utf-8",
success: function (data)
{
debugger;
var datatableVariable = $('#tblmsg').DataTable(
{
data: data,
columns: [
{ 'data': 'From' },
{ 'data': 'Subject' },
{ 'data': 'DateSent' },
{ 'data': 'Body' }
]
});
},
error:function(){alert('error');}
});
});

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Bidyasagar Mishra7y ago
use the below code before your method
[System.Web.Services.WebMethod]
harry code7y ago
Hi Jignesh

Thank you for replying.

Yes, I am using the attribute [System.Web.Services.WebMethod] on mu method
Jignesh Kumar7y ago
Hi Herry,

Please find below link for reference.

https://www.aspsnippets.com/Articles/Send-and-Receive-JSON-objects-to-Web-Service-Methods-using-jQuery-AJAX-in-ASPNet.aspx

Did you mark your method. and your return type of metthod also need to change to return type of list<>

[System.Web.Services.WebMethod]
Salman Beg7y ago
From the getmessage method you need to return json or string value but as of now you are returning void. Due to that reason it is not hitting to the success function.
harry code7y ago
Hi,
I have put debiggers in different parts of webMethod.

it is working fine.
At the end 'HttpContext.Current.Response.Write(js.Serialize(emaillist)); '

emaillist is getting filled.
i dont know where the error is happening...

I am using the following cdns in my aspx page

tell me if any other dependencies are missing while using DatatTable in Jquery.

Thank You
harry code7y ago
will try it.

Thank You
Salman Beg7y ago
Hi. From the getmessage you are returning void but in the success method of ajax call you are expecting value, which is not possible. Return value from getmessage method then only you can receive the value in ajax call. Put debugger everywhere and check you can able to know about error if anything exists. Thanks