C# - Raise An Event Once When Reach End Of Method?

Jul 1, 2010

How to raise combobox_SelectedIndexChanged(object sender, EventArgs e) programmatically? Lets say i have method called ClearFields(). I want to call the event before i hit the end of Clearfields() method.

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C# - Raise An Event Or Override A Method When The User Logs Out In ASP.NET

Mar 7, 2011

I need to do something when the user logs out. I have used ASP.NET Forms Authentication.

What should I override or implement?

I have an ASP.NET login control and I want to empty the basket-viewer when the customer logs out of the system.

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MVC :: Routing Is Correct, But Parameters Don't Reach The Action Method.

Jul 1, 2010

I've been struggling for some time now with an MVC routing issue, but I have finally reached a point where the basic routing is correct; that is, the application is invoking the correct action method and .aspx page, but the action method fails because no parameters are passed to it.

Before I show detailed screenshots of the problem, I had better provide some background. This is a bibliographic application which, among other things, analyzes text abstracts to identify unique words and the number of occurrences for each word in each document. This data will eventually be inserted into a SQL Server database, but for the time being I only want to do the calculation and display the results, on a document-by-document basis, in an .ASPX view set up for the purpose. The data structure of the application is as follows:

Collections -this is a set of fifty or so CollectionDetails items.CollectionDetails represent individual documents, in this case books in an academic library. Attributes of the CollectionDetail record are those typical of a library book--author, call number, title, year, and so on. The title and subject catalog headings are combined to form a quasi-abstract, which becomes the basis of the text analysis. In a few cases, I added additional text from Google Books or Amazon synopses and reviews.

MasterStopList contains common words such as pronouns and prepositions that we want to exclude from consideration.

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MVC :: Can't Reach Controller - Javascript Library And Method Called From View

Jul 23, 2010

I have a javascript library and in there i have a method that is called from my view. Here it is:

<li><a href="javascript:void 0" onclick="deleteAll('image', '<%= ViewData["FileGroupId"]%>')"><div><%=GetGlobalResourceObject("default", "Delete_all") %></div><div></div></a></li>
and here is my js code in the javascript library:
var deleteAll = function(module, groupId) {
jConfirm(_deleteConfirmAll, _deleteAll, function(r) {
if (r) {
cache: false,
type: "POST",
url: _baseUrl + "/" + module + "/deleteall/" + groupId,
success: function(msg) {
if (msg == '0') {
location.href = _baseUrl + '/' + module;
else {
jAlert(msg, _errorTitle);
My problem is that i cant reach my controller. Here is my controller code:
#region common methods
List<.CMS.Core.File> GetList(int groupId)
List<CMS.Core.File> list = new List<CMS.Core.File>();
CMS.Core.FileFilter filter = new CMS.Core.FileFilter();
filter.GroupId = groupId;
int res = CMS.Core.File.Search(_connection, filter, ref list);
return list;
public ActionResult DeleteAll(int groupId)
List<CMS.Core.File> list = GetList(groupId);
foreach (File item in list)
return Json(list);
And at last her is my Index method
public ActionResult Index(int? id)
if (Request.IsAjaxRequest())
JsonPaging paging = new JsonPaging();
int offset = 0;
int page = 0;
if (!String.IsNullOrEmpty(Request.QueryString["page"]))
Int32.TryParse(Request.QueryString["page"], out page);
if (page > 0)
offset = (page * paging.PageSize) - paging.PageSize;
FileFilter filter = new FileFilter();
filter.Deleted = false;
filter.MaxRecords = paging.PageSize;
filter.Offset = offset;
if (!String.IsNullOrEmpty(Request.QueryString["keywords"]))
filter.FilterType = FilterTypes.AND;
filter.Name = Request.QueryString["keywords"].ToString();
if (!String.IsNullOrEmpty(Request.QueryString["sort"]))
filter.OrderBy = Request.QueryString["sort"].ToString();
if (!String.IsNullOrEmpty(Request.QueryString["direction"]))
filter.OrderBy = filter.OrderBy + " " + Request.QueryString["direction"].ToString();
if (id > 0)
filter.GroupId = id.Value;
List<CMS.Core.File> items = new List<CMS.Core.File>();
int results = CMS.Core.File.Search(_connection, filter, ref items);
foreach (CMS.Core.File current in items)
JsonItem item = new JsonItem();
item.Id = current.Id;
item.Name = current.Name;
item.ImageText = current.ImageText;
item.Aperture = current.Aperture;
item.TakenOn = current.TakenOn;
item.Camera = current.Camera;
item.ExposureTime = current.ExposureTime;
item.FocalLenght = current.FocalLenght;
item.Tags = current.Tags;
item.Url = current.Url;
item["Active"] = current.Active.ToString();
item["Created"] = current.Created.ToString();
return Json(paging, JsonRequestBehavior.AllowGet);
ViewData["FileGroupId"] = id;
return View();

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How To Raise An Event For Fileupload Control

Apr 20, 2010

I want to know how to raise an event for fileupload control. In my project, as soon as I select a file(Image) it should show FILENAME,EXTENSION & SIZE in the labels given below.

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Web Forms :: How To Raise Event In Fileupload Control

Feb 22, 2010

i need when i select a image in fileupload control then path should store in a textbox. actually in gridview i have a image control ,one fileupload control and a textbox control. so when user trying to edit one image and click Edit button from gridview and chose a image from fileupload control then path should be store in relative textbox control.below is my design.


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TabContainer - How To Raise Server Side Event

Mar 3, 2011

I have a simple Tabcontainer with 3 tabpanels. I want to load some content to the different tabs the first time they are clicked (selecting the tabs). I have tried using Protected Sub TabContainer1_ActiveTabChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TabContainer1.ActiveTabChanged but that only works, WHEN there has been changes to the content.
So my question is: How do I raise a server side event like loading a droplist when the tab is clicked?

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Why Won't LinkButton Inside A GridView Raise Its OnClick Event

Feb 2, 2010

I have a LinkButton inside a GridView (via an TemplateField). No matter what I try, the LinkButton will not invoke its event handler. I have tried both traditional event handler ("OnClick")A OnRowCommand event handler at the GridView level.In both cases, I've debugged and it doesn't even catch the event handler.

<asp:LinkButton Text="Cancel" ID="DeleteButton" CausesValidation="false" OnClick="CancelThis" runat="server" />

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Web Forms :: How To Raise Event On Usercontrol From Onload Events

Jan 7, 2010

I have a login.ascx control with three controls (LoginName, Password and btnLogin) , I want to rase a click event on this button from .aspx page because some restriction is there so that I am unable to write any code on .ascx page.I am bale to put loginName and password on .ascx by using query string but unale to raise event.


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C# - How To Raise List Controls SelectedIndexChanged Event In Codebehind

Feb 19, 2010

How to raise the SelectedIndexChanged event of an asp.net List control in a codebehind using C#?

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Web Forms :: C# Raise Button Event In Web User Control?

Sep 13, 2010

I got a problem when raise an event from a button in web user control, it seems not work!!!

I dunno how to fix it, is there any1 got the same problem?

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Raise ItemDataBound Event From Repeater Within User Control To Page?

May 20, 2010

I have a user control that contains a repeater. We have added some paging and sorting into the user control and it all works well.

What I need now is a nice way to catch the OnItemDataBound event of the inner repeater and then bubble it up to be accessible directly from the user control from within the page.

We have tried catching it and then declaring it in the user control but it just won't work.

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Web Forms :: How To Raise An Event When User Clicks On An Item In The Dropdown List

Nov 18, 2010

my dropdown list contains 3 items google,yahoo,hotmail.

It the user selects google msgbox should be raised saying "You hae selected google". Thats it. I m not getting how to do that. I tried on selectedchangeindex event but nothing happened.

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Forms Data Controls :: Raise Click Event Of A Linkbutton Inside A Template Field That Was Created Programmatically

Jan 28, 2011

I need to generate a gridview with dynamic columns, on each cell I need a button that inserts-deletes a relationship in a database. The relationship is of course between what is represented by each column and row. I decided to use a gridview and create templatefields which I add programmatically to the table. I successfully got to that point but when i decided to raise a click event from the buttons or a rowcommand from the gridview I could not do it. Im looking into doing this with button fields right now but Im curious on how this can be accomplished?



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How To Extend Server-side Validation Controls To Raise An Event If Validation Fails

Feb 23, 2010

I am using ASP.NET's server-side validation. In the page_load event I'm calling Page.Validate(), and if Page.IsValid is not true I'm then polling the controls to figure out which ones are not valid, and then determining what actions to take.It would be much easier if each control would raise an event as validation fails, allowing me to take action for that particular control. I'm very much a naive programmer when it comes to validation, but is there a way to extend these controls so that a validation error raises an event?

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How To Raise Load Event On Previous Page With Cross Page Postbacks

Feb 21, 2010

I'm working on a wizard-like set of page, and I'm relying on cross page postbacks to navigate between them.

I need to be able to trigger the Load event on the previous page in order to save the form data for the page.

I've been told that for situations of this sort all I had to do is access the PreviousPage property in the destination page and this would trigger the load event of the previous page but for some reason this doesn't seem to be working.

Is there anything else I can do to explicitly trigger the load event on the previouspage if the PreviousPage property is not null?

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AJAX :: Can't Raise The Event In My MultiHandleSliderExtender Ajax Control

Dec 21, 2010

i am trying to raise my page_load event in my MultiHandleSliderExtender ,

how do i do this ? here is my HTML code



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How To Raise An Event In .net Application From A Silverlight Application

Oct 9, 2010

I have a Silverlight application hosted inside an asp.net website. In my silverlight applicaiton, if I select a theme. Then, theme changes will gets fired. I want to get notified in asp.net web page, when the theme changed event is fired inside the silverlight application. Note: Also, I don't want to use a data base to maintain the state of the application.

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User Control To Raise An Event That Is Handled By Another User Control?

Jan 19, 2011

Is there any way for one user control to raise an event that is handled by another user control without going through the page? I am using Umbraco and do not have access to the page object.


Umbraco has the idea of Macro's (user controls) that it loads into pages. I can't access the page directly as this is part of the framework.

There is a publish subscribe (pubsub) pattern that I know would fit my needs well (2 user controls that need to talk to each other) but am unsure how to hook it up in ASP.Net without the page object.

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Cannot Reach Label Inside Repeater

Jan 27, 2010

I want to know how I can reach my label inside my repeater.

I try in pageload like this but it is not recognized:

LblCur3.Text =


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WCF / ASMX :: Can't Reach A Web Service From An Intranet

Aug 30, 2010

I'm connecting sucessfully to a WebService but when I try to connect from an "Intranet" to the external WebService i don't have enought rights to reach the external server. Is there any thing that i can do programatically in order to skip these rights?

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How To Know If Email Failed To Reach Its Receivers

Jan 24, 2010

I am sending email using the following utility class, if receiver foo@[URL] is not exist or the email never reach him for one reason or another, I want my application to be notified. It works only when the smtp client failed to connect to the smtp server, I got an exception in this case, otherwise, the only way to know if email fail to reach the client is by checking client account.

public static class EmailUtil
/// <summary>
/// Fires exception if string is null or empty
/// </summary>
/// <param name="param">param value</param>
/// <param name="paramName">is the parameter name to be shown in the exception message</param>
private static void CheckStringParam(string parameter, string paramName)
if (String.IsNullOrEmpty(parameter))
throw new ArgumentException(String.Format("{0} can't be null or empty", paramName));
public static void SendEmail(EmailArgument emailArg)
CheckStringParam(emailArg.FromEmail, "emailArg.FromEmail");
CheckStringParam(emailArg.Subject, "emailArg.Subject");
CheckStringParam(emailArg.Body, "emailArg.Body");
string body = emailArg.Body;
MailMessage mailMsg = new MailMessage();
mailMsg.From = new MailAddress(emailArg.FromEmail);
foreach(string recipient in emailArg.ToEmails)
if (String.IsNullOrEmpty(recipient))
throw new ArgumentException("One of the values in the emailArg.ToEmails array is null or empty");
mailMsg.To.Add(new MailAddress(recipient));
mailMsg.IsBodyHtml = emailArg.IsHtml;
if (emailArg.PutHtmlTags)
body = String.Format("{0}" + body + "{1}", "<HTML><Body>", "</Body></HTML>");
mailMsg.Body = body;
mailMsg.BodyEncoding = emailArg.BodyEncoding;
// Get client info from the config file , it is tested with Web.config, need to be tested with App.config
SMTPConfiguration smtpConfig = (SMTPConfiguration)System.Configuration.ConfigurationManager.GetSection("SMTPConfigurationGroup/SMTPServer");
SmtpClient client = new SmtpClient(smtpConfig.Host, smtpConfig.Port);
client.EnableSsl = smtpConfig.EnableSSL;
client.Credentials = new System.Net.NetworkCredential(smtpConfig.Username, smtpConfig.Password);
// The notifications of failure are sent only to the client email.
// Exceptions are not guranteed to fire if the Receiver is invalid; for example gmail smtp server will fire exception only when receiver@gmail.com is not there.
// Exceptions will be fired if the server itself timeout or does not responding (due to connection or port problem, extra).
mailMsg.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;

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Elmah Can't Reach The Database To Log An Exception?

Aug 2, 2010

OK, apparently related questions dont seem to address this directly. An exception reaches Elmah, maybe a repository cant reach a database, but then neither can Elmah reach that database. Even if they target different servers, maybe its a network problem.

Is there a way to configure fallback logs for Elmah for cases like this, e.g. a text file, message queue, email, sms, etc? If so, where do I start looking to do this, excpt for now the Elmah source code.

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How To Reach The User Who Modified The File The Last Time

Mar 31, 2010

I am using an instance of DirectoryInfo to browse and retrive the files and some file attributes on a physical directory. This is displayed in a html table. But if you have for example text files (.txt) or word dokuments (.docx) How can I display the correct icon that is associated with the file in my html table? And further on how can I reach the user who modified the file the last time? Where is that info saved?

Is the DirectoryInfo the object I should use for this purpose? or are there other objects or functions that I should looking at?

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Web Forms :: Deny Insertion If The Limit Reach

May 7, 2015

I have a tables

if the employee has been reach his Leave (Vacation or Sick Leave) it will not save it to database


Vacation Leave = 5

Sick Leave = 5

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