C# - Sending A TXT File Via Web Service?
Dec 28, 2010
I want to have a web service which creates CSV data and writes it to a plain txt file on the client side. I was thinking of something like a GetData() method which returns a StringBuilder which contains the file content. The client of the service writes that into a file on the clients machine. Everything transfered needs to be secured, the web service runs together with a web app which is hosted on a https server...is calling the service secured then, too?
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Mar 8, 2010
I want to develop a website which provides the facility of sending free sms to any mobile. the technology which i want to use is asp.net with c#.How should i move further?
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Mar 15, 2011
i am developing a project wich sends massive amounts of emails. Lets say 200-300 emails per query. And each user can conduct multiple search querys. So at times it gets relly great number of emails to send.So this is what i need:1. a webservice with a fireAndForget type method, that i can pass in single or multiple email messages
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Oct 13, 2010
i have some web service in outsource server (not on the form server) and i need to send to this web service few text boxes fill by the user (text only - no files) i need to send the data + the number 1 + some guid string (that not changing - the same guid always) is anyone have an idea how im doing that? ( all the data need to be sending to asmx file.
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Oct 14, 2010
I have different web applications and I want to ask if it's advisable to create a web service to send emails through it so all my web applications will go there instead of having the Mail class or code in every web application...
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Aug 30, 2012
I have an object that contains a list of Email addresses and EmailIDs.
Code:
public class DataObjects
{
public class UserEmails
{
private string _Email;
public string Email
[Code] ....
And I populate it like this:
Code:
protected void GetEmails()
{
DataAccess da = new DataAccess(); //this is a separate Data Access class with loads of methods to access the database
List<DataObjects.UserEmails> myUserEmailsList = new List<DataObjects.UserEmails>(); //create a list of UserEmails objects
myUserEmailsList = da.getUserEmails(1); //this passes in a UserID to the data access function that returns me a list of emails for this user
myPassedList(myUserEmailsList); //I pass the list to another function just to prove the data is there and can be retrieved.
}
The last line in GetEmails passes the list to myPassedList
Code:
protected void myPassedList(IList EmailsList)
{
foreach (DataObjects.UserEmails myUserEmails in EmailsList) //loop through the list to prove it is populated etc.
{
int EmailID = myUserEmails.EmailID;
string Email = myUserEmails.Email;
}
}
Everything above works fine. Here's the question. When I am at the point where I have populated the List of UserEmails - I need to pass it to a web service for someone else to access the data.
I pass my list to a function and I can loop through it by writing:
foreach (DataObjects.UserEmails myUserEmails in EmailsList)
which is fine, for me, because my application knows what DataObjects.UserEmails means ... the people receiving the list won't. They are just getting a list.
Can they loop through the list I pass them without knowing the structure of the object in the list and just extract the data?
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Jan 20, 2010
I am working on a client - server application and in which I used to send and receive data through SOAP web service.
Now after sometimes I have heard from someone that I might lost some data while this process on soap service created in ASP.net. So now I have decided to send and receive data through batches like first I will send List of 50 objects and then next 50 and so on...
Now I am new to web services and all.
So my question is "Is it true that we can lost some data sometimes while transferring it through SOAP web service?"
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Apr 21, 2010
I am calling a web service (written in Java) in my web app. I use the WSDL to generate proxy classes using the wsdl.exe command line tool.
Everything is working fine.
However, I have found out that the web service is not doing any data validation at all when they receive a request from my app. Hence, if I happen to send one minute piece of data that isn't exactly what they want, I receive a general fault error in return, with no specifics at all of what the incorrect (if any) piece of data is.
So, before I make the request, I'd like to validate my request against the schema they have provided. Is this possible, and if so, how do I go about this?
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Dec 27, 2010
As indicated in the Subject, I have a web application (say APP) that should feature an e-Mail Notification Service (ENS). Activation of the Service is controlled by a Button in a dedicated page where some parameters are also included to set running Period (FromTime - ToTime), Interval, Recipients, etc.
When said button is clicked, it should maintain those parameters into database then launch ENS. Since ENS is expected to run for good according to set parameters, it logically should run as an external application/service, independent from APP.
When ENS starts, it needs to consult database to fetch parameters, then schedules its Timer to periodically check database for some transactions that when found, should trigger ENS to dispatch e-Mails to concerned Recipient(s).
CHALLENGES:
1. Launch ENS as an external application on button click from APP.Achieved by using System.Diagnostics.Process class. However, I encountered a problem in verifying if the process is already running before starting it. The root of the problem lies in
ProcessName property. Since ALL web applications must be launched via IE, hence, have
iexplore as their ProcessName, which is also applicable to all processes started through IE, it is very likely to have multiple processes utilising IE. How to check which is which? I couldn't figure out that.
Eventually, I ended up with a workaround: when the Process is started from APP, capture its ID and save it to database, then use this ID with GetProcessById() method for later verification. When the Process is terminated, reset stored ID in database.
2. What sort of application should ENS be: Windows Application or Web Application?
In either way however, ENS will always run invisible in the background being a Process. If this is the case, how about creating it as a Windows Service instead?
I did a lot of reading but still confused. However, the choice is limited now to either Web Application or Windows Service. Which one is more convenient to the task in hand?
3. What Timer to use?
I tried System.Timers.Timer in a test web application but it didn't fire! Then I used ASP AJAX Timer and it worked pretty well (I still need though to try running it from APP to judge its functionality). I came across some recommendations to use System.Threading.Timer but haven't tested that yet. Would it worth the trial?
4. ENS as a Windows Service.
If I create ENS as a Windows Service, would I be able to communicate with database? How would this influence the Timer to use?
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Jan 17, 2011
I am trying to configure my web application to send emails to my email address in case of any error . Below is my coding in the web config file, I am following example from a book cuase I AMM A nOVICE TO VISUAL STUDIO AND .NET AND C#. THE NAME OF THE BOOK IS ASP.Net E-Commerce in C#. I am not sure what to put in for the MailForm value since the book did not say could someone tell me .
[Code]....
In my other configuration file under the App_Code folder I have this coding Below:
[Code]....
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Oct 26, 2010
I've been pulling my hair out about this for ages. I have a WebService which sends a zip file to the browser. This works; when I test the WebService and 'invoke' the method through it directly, the zip file is downloaded to the browser correctly.
The problem arises when I use jQuery to send an AJAX request to the WebService - the zip file is downloaded to the response, but it stays in the response and doesn't download as a file.
Here is my code:
[Code]....
Now this works since the file downloads when I use the 'invoke' function when navigating directly to the service.
Here is my jQuery AJAX request...
[Code]....
I added the code in 'beforeSend' so that the request states explicitly what type of response the browser should expect.
I've been using Firebug to monitor the request/response headers and can't see anything wrong with them (except when I look at the content of the response, it's full of binary data AND its the same size as the file I'm sending.
I just attempted to upload screen-dumps of the request/response headers and the content of the reponse but I don't have enough reputation points to do this yet :-(
The Response is the same size of the Zip file so I'm assuming its being sent back to the browser, but the browser doesn't know what to do with it.
Tested in IE, FF & Chrome and the results are consistent.
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Oct 21, 2010
I'm creating an ASP.NET application that needs to get data from database (time consuming) and show some indication (e.g. gif animation) that the application is doing something. After that the data should be send to user that the user can save or open the CSV file.
I'm able to do this with two button click's. One for getting the data from the database in codebehind and using javascript to show the gif animation for user in the meanwhile. Second to use the esponse.write(myData) and response.end() to send the data for user to save in CSV file.
The problem is that I need to do this with one button click. If I combine the code to one button click handler the data is sent correctly but the gif animation is not hidden because the page is not updated. How to do this correctly with one button click?
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Jul 12, 2010
I am developing an application that manages a photo contest. In that application, I use an AsyncFileUpload control for the user selected photo. The server-side UploadedComplete does basic validation, and scales/clip the image as necessary.
The problem is, when i click on the submit button on the page, the content of the AsyncFileUpload gets sent with the other user-submitted data, so the user gets to wait twice as long to get a response from the server (I'm expecting photos that are between 3 and 7 Mb big, which takes a minute or two to upload).
My form looks like that:
<%-- ... snip - all other fields ... -->
<div style="margin-top: 20px; margin-bottom: 5px;">
<span class="texteB"><b>Upload a photo</b></span><br />
Browse your computer to find a photo.</div>
<div>
[Code]....
Is there something I missed out in the documentation? I've been working on this all day without much success.
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Jul 3, 2010
I am using JQuery & JSON (POST) to call webmethod. However I can call only webmethod located at aspx file but not in asmx file Below are sample codes
CustomValidate.asmx
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.ComponentModel
Public Class CustomValidate
Inherits System.Web.Services.WebService
'ACCESS VIA JSON
<System.Web.Services.WebMethod()> _
Public Shared Function AJAX_Test(ByVal date1) As Boolean...
Return True
End Function
End Class
Javascript: JQuery JSON
function isDates(source, arguments) {
var isValidDate;
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "CustomValidate.asmx/AJAX_Test",
data: '{date1: "' + arguments.Value + '"}',
dataType: "json",
async: false,
success: function(result) {
isValidDate = result;
},
error: function(httpRequest, textStatus, errorThrown) {
alert("status=" + textStatus + ",error=" + errorThrown);
}
});
arguments.IsValid = isValidDate;
}
It always return javascript undefined error. But if I put the AJAX_Test webmethod in aspx page and replace the url: "CustomValidate.asmx/AJAX_Test" to "mypage.aspx/AJAX_Test". It works fine.
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Jan 21, 2011
In web service reading *.txt file .this file contains some special characters like "" .so its shows error while reading .
string fullPath = Server.MapPath("sample.txt");
string reconciliationData = string.Empty;
StreamReader ObjReconciliationDataStream = new StreamReader(fullPath, Encoding.UTF8);
string strReconData = ObjReconciliationDataStream.ReadToEnd();
ObjReconciliationDataStream.Close();
ObjReconciliationDataStream = null;
return strReconData;
above code i am using .
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Aug 9, 2010
I m accessing another application by consuming webservice of that application. I m sending file to store and retrieving file from other dabatase. Web service is the only to access another application.Now, I want to delete the file using the same web service where I stored that file in the another database.I m getting exception and I m unable to figure it out.
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May 20, 2010
I am working on document storage and retrieval application. In which i display the pdf document as an png image , but i have a email button on the top. On clicking that the user would be able to provide an email address to which the document needs to be sent, and I need to send this pdf as an attachment. I need to password protect the file for security reasons. I have no clue on how i can do this in asp.net mvc.
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Aug 31, 2011
I have code that attaches a pdf file and sends out emails to people. It worked fine on my machine. Then deployed it to a client's system and exchange is on another machine. I get the following error message:
Code:
Failure sending mail.
System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond xx.xx.xx.xx:25 at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) at
[Code] ....
Is the user for the nextwork credentials not getting access to the server? Or what could this be normally with the given error message?
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Sep 22, 2010
The subject of this thread is my question and I am really very sorry, I cannot brief it. I have generated the pdf file which contains text taken as input by various web-form and have saved it in my local drive then sended it to some email addresses. Now I want to know that how can I save it in client computer and send it to some email addresses provided by Client on demand? I am failed to solve this problem as I don't know how to get INFORMATION OF CLIENT'S LOCAL DRIVE AS CLIENT MAY USES DIFFERENT OPERATING SYSTEM.
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Aug 13, 2010
Following this tutorial: [URL]
Under "Sending a File Using Email" section what exactly is the code trying to do.
1: The SendFile.cshtml does not have any option to select file.
2: ProcessFile.cshtml is running fine. I am getting the email but no attachement.
I tried changing fileAttachment input to type="file" but not file is being sent to my email. I just get the message send in body.
Question: How exactly this file attachment works using Email Helper in WebPages.
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Oct 20, 2010
i have doubt i have a .ashx file is in project called ShowImage.ashx,Currentely i am using this file for to show to show images in uploading area used to immediately show image after uploading it to the uploader on the web page
here some part of my code
event on UPLOAD BUTTON CLICK
HttpPostedFile File = FileUpload1.PostedFile;
.....
............
Image1.ImageUrl = "~/ShowImage.ashx?id=" + id;
but now i want to pass the user id containg textbox value to this .ashx file(it is an int Value not string) how can ito send my textbox int values to .ashx file and receive the result
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Mar 4, 2010
i am sending a html file (attachment) using windows application, when i open the mail it will displays the html content including buttons, tabs, but i don't want to dispaly those buttons and tabs
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Mar 10, 2011
I was trying to go through this tutorial:
[URL]
but when I tried to add the service reference to the silverlight app, the Add Service Reference window would show me that there was a service file, but the node wouldn't expand to show the rest of the files that contain the services and what not. I got this error instead:
"An error occurred during the processing of a configuration file required to service this request. review the specific error details below and modify your configuration file appropriately."
"Parser Error Message:There is no service behavior named 'AdventureWorks_WebServer.Service1Behavior'."
"Metadata contains a reference that cannot be resolved: 'http://localhost:55579/Service1.svc'.
The server did not provide a meaningful reply; this might be caused by a contract mismatch, a premature session shutdown or an internal server error.
If the service is defined in the current solution, try building the solution and adding the service reference again."
here's my web.config file:
[Code]....
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Jul 22, 2010
I am working on sending twitter updates from my asp.net website. I have the authorization down but I am stuck when it gets to sending the tweet here is my code behind:
protected void btnAuth_Click(object sender, EventArgs e)
{
// add these to web.config or your preferred location
var consumerKey = ConfigurationManager.AppSettings["consumerKey"];
var consumerSecret = ConfigurationManager.AppSettings["consumerSecret"];
//If User is not valid user
if (Request.QueryString["oauth_token"] == null)
{
//Step 1: Get Request Token
OAuthTokenResponse RequestToken = OAuthUtility.GetRequestToken(consumerKey,consumerSecret);
//Step 2: Redirect User to Requested Token
Response.Redirect("http://twitter.com/oauth/authorize?oauth_token="+ RequestToken.Token);
}
else
{
//For Valid User
string Oauth_Token = Request.QueryString["oauth_token"].ToString();
var accessToken = OAuthUtility.GetAccessToken(consumerKey, consumerSecret, Oauth_Token, txtPIN.Text.Trim());
lblMessage.Text = "<b>Hello " + accessToken.ScreenName + ", Welcome to my Twitter App<b>";
lblMessage.Text += "<br/> Token: " + accessToken.Token;
lblMessage.Text += "<br/> TokenSecret: " + accessToken.TokenSecret;
lblMessage.Text += "<br/> UserId: " + accessToken.UserId;
lblMessage.Text += "<br/> VerificationString: " + accessToken.VerificationString;
}
}
protected void btnTweet_Click(object sender, EventArgs e)
{
// add these to web.config or your preferred location
var consumerKey = ConfigurationManager.AppSettings["consumerKey"];
var consumerSecret = ConfigurationManager.AppSettings["consumerSecret"];
OAuthTokens accessToken = new OAuthTokens();
accessToken.AccessToken = "xxxxxxxxxxxxxxxxxxxxxxxxxxxx";
accessToken.AccessTokenSecret = "xxxxxxxxxxxxxxxxxxxx";
accessToken.ConsumerKey = consumerKey;
accessToken.ConsumerSecret = consumerSecret;
TwitterStatus TweetStatus = new TwitterStatus();
TweetStatus.Update(accessTokens, txtTweet.Text);
}
I dont know how to get the AccessToken & AccessTokenSecret.
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Feb 7, 2011
I am getting error as mentioned below:
The process cannot access file "E:TempPDFsSample.pdf" because it is being used by another process
I happen to send the pdf from email and after email is sent i need to delete the Sample.pdf file. The code that i have written doesn't work
FileInfo DeleteFileInfo = new FileInfo(directoryPath + "\" + filename + ".pdf");
if (DeleteFileInfo.Exists)
File.Delete(directoryPath + "\" + filename + ".pdf");
here directorypath is E:TempPDFs, filename is Sample
UPDATED:
public static void SendMail(string fromAddress, string[] toAddress, string[] ccAddress, string[] bccAddress, string subject, string messageBody, bool isBodyHtml, ArrayList attachments, string host, string username, string pwd, string port)
{
{
try
[Code]....
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