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  • Serializing Request.Form to a Dictionary or something

    - by André Alçada Padez
    Hi i need to pass my Request.Form as a parameter, but first i have to add some key/value pairs to it. I get the exception that the Collection is readonly. I've tried: System.Collections.Specialized.NameValueCollection myform = Request.Form; and i get the same error. and i've tried: foreach(KeyValuePair<string, string> pair in Request.Form) { Response.Write(Convert.ToString(pair.Key) + " - " + Convert.ToString(pair.Value) + "<br />"); } to test if i can pass it one by one to another dictionary, but i get: System.InvalidCastException: Specified cast is not valid. some help, anyone? Thanx

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  • Store code line in a string?

    - by user1342164
    I need to store code in a string so that if a value is true, it is in the code line if not true its not in the code line. When I populate summarytextbox if consulting amount is "" then dont use this code if is does have an amount include the code. Is this possible? Other wise I would have to do a bunch if then statements. When I do the following below it cant convert to double. Dim ConsultingFee As String Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If Session("ConsultingFeeAmount") = "" Then Else 'Store the following line in a string???? ConsultingFee = +Environment.NewLine + Session("ConsultingFee") + " Amount: " + Session("ConsultingFeeAmount") End If SummaryTextBox.Text = Session("TeachingHospital") + Environment.NewLine + Session("HospitalAddress") + Environment.NewLine + Session("HospitalCity") + Environment.NewLine + Session("HospitalState") + Environment.NewLine + Session("HospitalZip") + Environment.NewLine + Session("HospitalTIN") + ConsultingFee End Sub

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  • Set Page Output Cache VaryByCustom value programmatically

    - by Chris Marisic
    I want to use an Enum value for the types of VaryByCustom parameters I will support, is it possible to do this? I tried setting it in the page itself <%@ OutputCache Duration="600" VaryByParam="none" VaryByCustom='<%=VaryByCustomType.IsAuthenticated.ToString(); %>' %> But this returned the entire literal string "<%=VaryByCustomType.IsAuthenticated.ToString(); %>" inside my global.asax is there any way to do this either on the page itself or from the codebehind? Or is this just something I have to accept is purely magic strings and nothing I can do to add type safety to it?

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  • How to remove dangerous characters(ie script tags)?

    - by chobo2
    I am wondering is there any sort of C# class or 3rd party library that removes dangerous characters such as script tags? I know you can use regex but I also know people can write their script tags so many ways that you can fool the regex into thinking it is OK. I also heard that HTML Agility Pack is good so I am wondering is there any script removal class made for it?

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  • How to Solve this Error "Cannot convert lambda expression to type 'string' because it is not a deleg

    - by peace
    . I get this error: "Cannot convert lambda expression to type 'string' because it is not a delegate type" - keyword select become underlined in blue Can you please advice. Employee emp = new Employee(); comHandledBySQt.DataSource = from x in emp.GetDataFromTable("1") select new { x.Id, Name = x.FirstName + " " + x.LastName }; comHandledBySQt.DisplayMember = "Name"; comHandledBySQt.ValueMember = "Id"; Above code should displays drop list of employees first name and last name in a combo box

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  • Different approaches for finding users within Active Directory

    - by EvilDr
    I'm a newbie to AD programming, but after a couple of weeks of research have found the following three ways to search for users in Active Directory using the account name as the search parameter: Option 1 - FindByIdentity Dim ctx As New PrincipalContext(ContextType.Domain, Environment.MachineName) Dim u As UserPrincipal = UserPrincipal.FindByIdentity(ctx, IdentityType.SamAccountName, "MYDOMAIN\Administrator") If u Is Nothing Then Trace.Warn("No user found.") Else Trace.Warn("Name=" & u.Name) Trace.Warn("DisplayName=" & u.DisplayName) Trace.Warn("DistinguishedName=" & u.DistinguishedName) Trace.Warn("EmployeeId=" & u.EmployeeId) Trace.Warn("EmailAddress=" & u.EmailAddress) End If Option 2 - DirectorySearcher Dim connPath As String = "LDAP://" & Environment.MachineName Dim de As New DirectoryEntry(connPath) Dim ds As New DirectorySearcher(de) ds.Filter = String.Format("(&(objectClass=user)(anr={0}))", Split(User.Identity.Name, "\")(1)) ds.PropertiesToLoad.Add("name") ds.PropertiesToLoad.Add("displayName") ds.PropertiesToLoad.Add("distinguishedName") ds.PropertiesToLoad.Add("employeeId") ds.PropertiesToLoad.Add("mail") Dim src As SearchResult = ds.FindOne() If src Is Nothing Then Trace.Warn("No user found.") Else For Each propertyKey As String In src.Properties.PropertyNames Dim valueCollection As ResultPropertyValueCollection = src.Properties(propertyKey) For Each propertyValue As Object In valueCollection Trace.Warn(propertyKey & "=" & propertyValue.ToString) Next Next End If Option 3 - PrincipalSearcher Dim ctx2 As New PrincipalContext(ContextType.Domain, Environment.MachineName) Dim sp As New UserPrincipal(ctx2) sp.SamAccountName = "MYDOMAIN\Administrator" Dim s As New PrincipalSearcher s.QueryFilter = sp Dim p2 As UserPrincipal = s.FindOne() If p2 Is Nothing Then Trace.Warn("No user found.") Else Trace.Warn(p2.Name) Trace.Warn(p2.DisplayName) Trace.Warn(p2.DistinguishedName) Trace.Warn(p2.EmployeeId) Trace.Warn(p2.EmailAddress) End If All three of these methods return the same results, but I was wondering if any particular method is better or worse than the others? Option 1 or 3 seem to be the best as they provide strongly-typed property names, but I might be wrong? My overall objective is to find a single user within AD based on the user principal value passed via the web browser when using Windows Authentication on a site (e.g. "MYDOMAIN\MyUserAccountName")

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  • Custom authorize using MVC

    - by Karsten
    Im working a bit with MVC. I need to know something about roles when using the same controller for several users getting and showing pictures. I need to show pictures, but sometimes these pictures should only be shown for those who created them. So now when using the Authorize attribute and if picture and username match thrue my databse I could ofcause use this to make a match. I could ofcause make a match method in the controller. [Authorize] controllGetPicture(Picture ID){ getSomepicture.. return picture } DB relations Relations [User] <- [Pictures] ID FK_UserID Im thinking about just getting the User ID and compare with the Picture FK_UserId at the picture but I think it could be smarter. How?

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  • Object reference not set to an instance of an object.....?

    - by jamal
    Hi guys I always got this error from my site and it keeps bugging me.I've been trying to figure out the cause of this error but I can't really figure it out. Here's the stacktrace: at BasePage.Page_PreInit(Object sender, EventArgs e) at System.EventHandler.Invoke(Object sender, EventArgs e) at System.Web.UI.Page.OnPreInit(EventArgs e) at System.Web.UI.Page.PerformPreInit() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) And on my basepage I only got this code: Imports Microsoft.VisualBasic Public Class BasePage Inherits System.Web.UI.Page Private Sub Page_PreInit(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreInit Page.Theme = "Something" If (Request.UserAgent.IndexOf("AppleWebKit") 0) Then Request.Browser.Adapters.Clear() End If End Sub Private Sub Page_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreRender If Me.Title = "Untitled Page" Then Throw New Exception("Page title cannot be ""Untitled Page"".") End If End Sub End Class According to the stacktrace this always happens on my basepage preinit event.What do you think is the problem here guys?

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  • Access varialbe from code behind via jQery

    - by Morron
    Hi, I have the following code that I want to return to a variable "t" in jQery: Code behind: Public Shared Function GetSomeText() As String Dim result = "This is from code behind" Return result End Function Caller variable in jQuery: //This is not working like that, I think var t = GetSomeText(); So, how can I make variable "t" get the "result" from Function GetSomeText from code-behind? Thank you.

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  • Loosing Route data in RedirectToAction

    - by user1512359
    hi i have a weird problem and here we go: i am redirecting using this command : return RedirectToAction("ViewMessage", "Account", new {id = model.MessageId}); but in ViewMessage action when i try to get id, its null ?!?!?!?!?? string strMessageId = RouteData.Values["id"] as string; i have done this code in lots of places and it works fine but i dont know what is going on here.... :( i know i can use TempData but i dont want to :)

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  • Clearing Session in Global Application_Error

    - by Zarigani
    Whenever an unhandled exception occurs on our site, I want to: Send a notification email Clear the user's session Send the user to a error page ("Sorry, a problem occurred...") The first and last I've had working for a long time but the second is causing me some issues. My Global.asax.vb includes: Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs) ' Send exception report Dim ex As System.Exception = Nothing If HttpContext.Current IsNot Nothing AndAlso HttpContext.Current.Server IsNot Nothing Then ex = HttpContext.Current.Server.GetLastError End If Dim eh As New ErrorHandling(ex) eh.SendError() ' Clear session If HttpContext.Current IsNot Nothing AndAlso HttpContext.Current.Session IsNot Nothing Then HttpContext.Current.Session.Clear() End If ' User will now be sent to the 500 error page (by the CustomError setting in web.config) End Sub When I run a debug, I can see the session being cleared, but then on the next page the session is back again! I eventually found a reference that suggests that changes to session will not be saved unless Server.ClearError is called. Unfortunately, if I add this (just below the line that sets "ex") then the CustomErrors redirect doesn't seem to kick in and I'm left with a blank page? Is there a way around this?

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  • Preventing Race Conditions

    - by Qua
    I'm using the built-in ajax functionality of MVC2. Basically the user types a search query, and on every key press a set of results for the query is shown. This works fine in almost all cases, but sometimes the server is a bit slow with a single response, and thus the result for the next key stroke is returned before the previous. When the previous key stroke result set is finally returned to the client it will overwrite the results for the newer search query that should actually have been shown. My code follows more or less along these lines: <% using (Ajax.BeginForm("SearchUser", null, new AjaxOptions() { UpdateTargetId = "findUserResults" }, new { id = "findUserAjaxForm" })) {%> Every keystroke submits this form and thus outputs the results in the 'findUserResults' element. How can I prevent older results from being displayed while still making use of the built-in functions provided in MVC2?

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  • iPhone Core Data - Access deep attributes with to many relationships

    - by ncohen
    Hi everyone, Let say I have an entity user which has a one to many relationship with the entity menu which has a one to many relationship with the entity meal which has a many to one relationship with the entity recipe which has a one to many relationship with the entity element. What I would like to do is to select the elements which belong to a particular user (username = myUsername) and particular menu*s* (minDate < menu.date < maxDate). Does anyone have an idea how to get them? Thanks

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  • Amazon EC2 multiple servers share session state

    - by Theofanis Pantelides
    Hi everyone, I have a bunch of EC2 servers that are load balanced. Some of the servers are not sharing session, and users keep getting logged in and out. How can I make all the server share the one session, possibly even using a partitionresolver solution public class PartitionResolver : System.Web.IPartitionResolver { private String[] partitions; public void Initialize() { // create the partition connection string table // web1, web2 partitions = new String[] { "192.168.1.1" }; } public String ResolvePartition(Object key) { String oHost = System.Web.HttpContext.Current.Request.Url.Host.ToLower().Trim(); if (oHost.StartsWith("10.0.0") || oHost.Equals("localhost")) return "tcpip=127.0.0.1:42424"; String sid = (String)key; // hash the incoming session ID into // one of the available partitions Int32 partitionID = Math.Abs(sid.GetHashCode()) % partitions.Length; return ("tcpip=" + partitions[partitionID] + ":42424"); } } -theo

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  • Approach to data wrapping

    - by Mikhail
    I'm developing in PHP and MySQL. The information about the currently logged in user is stored in many different tables. The information that I need on each page, I preload. However if something is needed from a rarely accessed table - then I do $newdata = $db->Query('SELECT * FROM rare_table WHERE user_id='.$user->id); I would like to simplify the above to a point where I don't have to specify that the query should be limited to this particular user. An ideal function call would be: $newdata = $user->Query('SELECT * FROM rare_table'); Obviously I'd have to parse the SQL and add a WHERE clause. Or add to the already existing clause. Questions: are there tools to do this? How can I develop this? Is this even a good idea?

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  • Extending existing data structure in Scala.

    - by Lukasz Lew
    I have a normal tree defined in Scala. sealed abstract class Tree case class Node (...) extends Tree case class Leaf (...) extends Tree Now I want to add a member variable to all nodes and leaves in the tree. Is it possible with extend keyword or do I have to modify the tree classes by adding [T]?

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  • Active Directoy LDAP - Lock User Account

    - by Germ
    What is the prefered way to lock an Active Directory account? int val = (int)directoryentry.Properties["userAccountControl"].Value; directoryentry.Properties["userAccountControl"].Value = val | 0x0010; vs. directoryentry.InvokeSet("IsAccountLocked", true); Is there a better way?

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  • IEnumerable not null but calling Count() results in Exception

    - by Draak
    I have code that's working beautifully on my development machine, but when deployed to the server is throwing null reference exception. So, I can't step through the code, but I've pinned down the culprit. But now I am puzzled. Here's the code. The question is below. Dim certs = From p In persons _ Select New Certificate( _ p.Value, _ New CertificateData.Seminar(thisEvent.Seminar.Name, _ thisEvent.StartDate.Value, _ thisEvent.EndDate.Value, _ thisEvent.Venue.City, _ thisEvent.Venue.State, _ New CertificateData.Instructor( _ staffMember.Name, _ staffMember.Titles, _ instrSignatPath))) _ With {.CertificateId = p.Key} lblMessage.Text = CStr(certs Is Nothing) lblMessage.Text = lblMessage.Text + "<br />" + CStr(certs.Count()) In the code above persons is a dictionary of custom class, and certs is of IEnumerable type. Now here's the quandary.. The first line that sets the label returns False, so certs is not null. But the second line throws an null reference exception. How is this possible?

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  • What is the pros and cons in using FormsAuthentication to persist login cookie?

    - by stacker
    What is the pros and cons in using FormsAuthentication to persist a login cookie? I see that StackOverflow ignore FormsAuthentication and instead implemented a different strategy to persist a login cookie. Pros Out of the box implementation for persistent login feature. Cons The login feature depends on the machine key which mean that I need to make sure that the machine key is the same on all the servers in the farm. The cookie contains wired encrypted values that don't really make sense to store in the cookie.

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  • Connecting data to a GUI - OOP

    - by tau
    I have an application with several graphs and tables on it. I worked fast and just made classes like Graph and Table that each contained a request object (pseudo-code): class Graph { private request; public function setDateRange(dateRange) { request.setDateRange(dateRange); } public function refresh() { request.getData(function() { //refresh the display }); } } Upon a GUI event (say, someone changes the date range dropdown), I'd just call the setters on the Graph instance and then refresh it. Well, when I added other GUI elements like tables and whatnot, they all basically had similar methods (setDateRange and other things common to the request). What are some more elegant OOP ways of doing this? The application is very simple and I don't want to over-architect it, but I also don't want to have a bunch of classes with basically the same methods that are just routing to a request object. I also don't want to set up each GUI class as inheriting from the request class, but I'm open to any ideas really.

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