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  • How to solve out of memory exception error in Entity FramWork?

    - by programmerist
    Hello; these below codes give whole data of my Rehber datas. But if i want to show web page via Gridview send me out of memory exception error. GenoTip.BAL: public static List<Rehber> GetAllDataOfRehber() { using (GenoTipSatisEntities genSatisCtx = new GenoTipSatisEntities()) { ObjectQuery<Rehber> rehber = genSatisCtx.Rehber; return rehber.ToList(); } } if i bind data directly dummy gridview like that no problem occures every thing is great!!! <asp:GridView ID="gwRehber" runat="server"> </asp:GridView> if above codes send data to Satis.aspx page: using GenoTip.BAL; namespace GenoTip.Web.ContentPages.Satis { public partial class Satis : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { gwRehber.DataSource = SatisServices.GetAllDataOfRehber(); gwRehber.DataBind(); //gwRehber.Columns[0].Visible = false; } } } } but i rearranged my gridview send me out of memory exception!!!! i need this arrangenment to show deta!!! <asp:GridView ID="gwRehber" runat="server"> <Columns> <%-- <asp:TemplateField> <ItemTemplate> <asp:Button runat="server" ID="btnID" CommandName="select" CommandArgument='<%# Eval("ID") %>' Text="Seç" /> </ItemTemplate> </asp:TemplateField>--%> <asp:BoundField DataField="Ad" HeaderText="Ad" /> <asp:BoundField DataField="BireyID" HeaderText="BireyID" Visible="false" /> <asp:BoundField DataField="Degistiren" HeaderText="Degistiren" /> <asp:BoundField DataField="EklemeTarihi" HeaderText="EklemeTarihi" /> <asp:BoundField DataField="DegistirmeTarihi" HeaderText="Degistirme Tarihi" Visible="false" /> <asp:BoundField DataField="Ekleyen" HeaderText="Ekleyen" /> <asp:BoundField DataField="ID" HeaderText="ID" Visible="false" /> <asp:BoundField DataField="Imza" HeaderText="Imza" /> <asp:BoundField DataField="KurumID" HeaderText="KurumID" Visible="false" /> </Columns> </asp:GridView> Error Detail : [OutOfMemoryException: 'System.OutOfMemoryException' türünde özel durum olusturuldu.] System.String.GetStringForStringBuilder(String value, Int32 startIndex, Int32 length, Int32 capacity) +29 System.Convert.ToBase64String(Byte[] inArray, Int32 offset, Int32 length, Base64FormattingOptions options) +146 System.Web.UI.ObjectStateFormatter.Serialize(Object stateGraph) +183 System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Serialize(Object state) +4 System.Web.UI.Util.SerializeWithAssert(IStateFormatter formatter, Object stateGraph) +37 System.Web.UI.HiddenFieldPageStatePersister.Save() +79 System.Web.UI.Page.SavePageStateToPersistenceMedium(Object state) +105 System.Web.UI.Page.SaveAllState() +236 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1099

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  • Problem with FedEx Address validation web service

    - by DJ Matthews
    Hi, I'm trying to get started with Fedex'es Address validation service and I'm running into a road block with FedEx's own demo application. This is the code in there app: Sub Main() ''# Build a AddressValidationRequest object Dim request As AddressValidationRequest = New AddressValidationRequest() Console.WriteLine("--- Setting Credentials ---") request.WebAuthenticationDetail = New WebAuthenticationDetail() request.WebAuthenticationDetail.UserCredential = New WebAuthenticationCredential() request.WebAuthenticationDetail.UserCredential.Key = "###" ''# Replace "XXX" with the Key request.WebAuthenticationDetail.UserCredential.Password = "###" ''# Replace "XXX" with the Password Console.WriteLine("--- Setting Account Information ---") request.ClientDetail = New ClientDetail() request.ClientDetail.AccountNumber = "###" ''# Replace "XXX" with clients account number request.ClientDetail.MeterNumber = "###" ''# Replace "XXX" with clients meter number request.TransactionDetail = New TransactionDetail() request.TransactionDetail.CustomerTransactionId = "Address Validation v2 Request using VB.NET Sample Code" ''# This is just an echo back request.Version = New VersionId() request.RequestTimestamp = DateTime.Now Console.WriteLine("--- Setting Validation Options ---") request.Options = New AddressValidationOptions() request.Options.CheckResidentialStatus = True request.Options.MaximumNumberOfMatches = 5 request.Options.StreetAccuracy = AddressValidationAccuracyType.LOOSE request.Options.DirectionalAccuracy = AddressValidationAccuracyType.LOOSE request.Options.CompanyNameAccuracy = AddressValidationAccuracyType.LOOSE request.Options.ConvertToUpperCase = True request.Options.RecognizeAlternateCityNames = True request.Options.ReturnParsedElements = True Console.WriteLine("--- Address 1 ---") request.AddressesToValidate = New AddressToValidate(1) {New AddressToValidate(), New AddressToValidate()} request.AddressesToValidate(0).AddressId = "WTC" request.AddressesToValidate(0).Address = New Address() request.AddressesToValidate(0).Address.StreetLines = New String(0) {"10 FedEx Parkway"} request.AddressesToValidate(0).Address.PostalCode = "38017" request.AddressesToValidate(0).CompanyName = "FedEx Services" Console.WriteLine("--- Address 2 ---") request.AddressesToValidate(1).AddressId = "Kinkos" request.AddressesToValidate(1).Address = New Address() request.AddressesToValidate(1).Address.StreetLines = New String(0) {"50 N Front St"} request.AddressesToValidate(1).Address.PostalCode = "38103" request.AddressesToValidate(1).CompanyName = "FedEx Kinkos" Dim addressValidationService As AddressValidationService.AddressValidationService = New AddressValidationService.AddressValidationService ''# Try ''# This is the call to the web service passing in a AddressValidationRequest and returning a AddressValidationReply Console.WriteLine("--- Sending Request..... ---") Dim reply As New AddressValidationReply() reply = addressValidationService.addressValidation(request) Console.WriteLine("--- Processing request.... ---") ''#This is where I get the error If (Not reply.HighestSeverity = NotificationSeverityType.ERROR) And (Not reply.HighestSeverity = NotificationSeverityType.FAILURE) Then If (Not reply.AddressResults Is Nothing) Then For Each result As AddressValidationResult In reply.AddressResults Console.WriteLine("Address Id - " + result.AddressId) Console.WriteLine("--- Proposed Details ---") If (Not result.ProposedAddressDetails Is Nothing) Then For Each detail As ProposedAddressDetail In result.ProposedAddressDetails Console.WriteLine("Score - " + detail.Score) Console.WriteLine("Address - " + detail.Address.StreetLines(0)) Console.WriteLine(" " + detail.Address.StateOrProvinceCode + " " + detail.Address.PostalCode + " " + detail.Address.CountryCode) Console.WriteLine("Changes -") For Each change As AddressValidationChangeType In detail.Changes Console.WriteLine(change.ToString()) Next Console.WriteLine("") Next End If Console.WriteLine("") Next End If Else For Each notification As Notification In reply.Notifications Console.WriteLine(notification.Message) Next End If Catch e As SoapException Console.WriteLine(e.Detail.InnerText) Catch e As Exception Console.WriteLine(e.Message) End Try Console.WriteLine("Press any key to quit !") Console.ReadKey() End Sub It seems to send the request object to the web service, but the"reply" object is returned with "Nothing". I could understand if I wrote the code, but good god... they can't even get their own code to work? Has anyone else seen/fixed this problem?

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  • Detecting 'stealth' web-crawlers

    - by Jacco
    What options are there to detect web-crawlers that do not want to be detected? (I know that listing detection techniques will allow the smart stealth-crawler programmer to make a better spider, but I do not think that we will ever be able to block smart stealth-crawlers anyway, only the ones that make mistakes.) I'm not talking about the nice crawlers such as googlebot and Yahoo! Slurp. I consider a bot nice if it: identifies itself as a bot in the user agent string reads robots.txt (and obeys it) I'm talking about the bad crawlers, hiding behind common user agents, using my bandwidth and never giving me anything in return. There are some trapdoors that can be constructed updated list (thanks Chris, gs): Adding a directory only listed (marked as disallow) in the robots.txt, Adding invisible links (possibly marked as rel="nofollow"?), style="display: none;" on link or parent container placed underneath another element with higher z-index detect who doesn't understand CaPiTaLiSaTioN, detect who tries to post replies but always fail the Captcha. detect GET requests to POST-only resources detect interval between requests detect order of pages requested detect who (consistently) requests https resources over http detect who does not request image file (this in combination with a list of user-agents of known image capable browsers works surprisingly nice) Some traps would be triggered by both 'good' and 'bad' bots. you could combine those with a whitelist: It trigger a trap It request robots.txt? It doest not trigger another trap because it obeyed robots.txt One other important thing here is: Please consider blind people using a screen readers: give people a way to contact you, or solve a (non-image) Captcha to continue browsing. What methods are there to automatically detect the web crawlers trying to mask themselves as normal human visitors. Update The question is not: How do I catch every crawler. The question is: How can I maximize the chance of detecting a crawler. Some spiders are really good, and actually parse and understand html, xhtml, css javascript, VB script etc... I have no illusions: I won't be able to beat them. You would however be surprised how stupid some crawlers are. With the best example of stupidity (in my opinion) being: cast all URLs to lower case before requesting them. And then there is a whole bunch of crawlers that are just 'not good enough' to avoid the various trapdoors.

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  • Testing an iphone web app on windows

    - by JoseMarmolejos
    When developing web apps for the iphone on a mac you can test your app in either Iphoney or the apple supplied simulator; bot of them are excellent for the task but are only available for macs. So I have to ask, are windows alternative for these iphone simulators? So far I could only find this one.

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  • Best practices for sending automated daily emails from web service

    - by Tauren
    I am running a web service that currently sends confirmation emails out to new users via the gmail smtp servers. As I'm only getting a few new users each day, this hasn't been a problem. I've recently added new features to the webapp that will require a customized message to be sent out to each user every day. Think of this as similar to the regular messages LinkedIn sends out that give you a status report on the activity in your network. Every user's message will be different. With thousands of users, this means thousands of unique messages will be sent each day. Edit: I've since found that these types of email are called "transactional or relationship messages". Spamtacular has a good article on differentiating between marketing and transactional email. I don't think using gmail's smtp servers will cut it anymore, but I don't know that for sure. I don't know what gmail's maximum outgoing messages per account is (it might be 100/day), but they limit outgoing mail to 500 recipients per message. I'm not sending a single message to 500 recipients, but I'm going to be sending 1000's of customized messages with each recipient getting one per day. I'm interested to learn any best practices for doing this (especially for Java-based webapps). Here are some of my thoughts and concerns on it: Should I set up my own outgoing mail server? If I do this, it seems like I'll have all sorts of other issues to worry about, such as preventing mail server abuse, monitoring bounces, allowing ways to opt-out of emails, etc. Are there any tools or services to help with this? Maybe something like OpenEMM or a services like MailChimp? But those seem focused more toward email marketing campaigns. I don't think I should have the webapp itself handle sending emails as it currently is for new user signups. I'm thinking I should setup a separate messaging server that can access the same backend/datastore as the webapp. Thoughts on this? Should I consider setting up some sort of message queueing service to help with this, such as JMS, RabbitMQ, ActiveMQ, etc.? Do I need to provide users a way to opt-out? Do I need to flag these as bulk messages? I don't really consider these email marketing messages, but I'm unsure what is considered appropriate or proper netiquette. Any advice is appreciated. I'm also very interested in open source tools or web services that simplify things and could help me to ramp up as quickly as possible. Thanks!

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  • Find an asp:Button in VB.NET

    - by Andrew
    I'm trying to code a section for my website in VB but VB can't seem to find a button. Is there a way for the code to find it? I know where it is. Loginview Login LoginTemplate. How do I get VB.NET to point to that location?

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  • Entity Date Modelset Generates Errors in Visual Web Developer

    - by davemackey
    I attempted to add a ADO.NET Entity Data Model to my Visual Web Developer 2010 Express project and it generates but returns a whole slew of errors. Why is this generating errors? Here are the main errors: 'Public Property ID As Integer' has multiple definitions with identical signatures. Method 'Onaddress_IDChanging' cannot be declared 'Partial' because only one method 'Onaddress_IDChanging' can be marked 'Partial'. '_line1' is already declared as 'Private _line1 As String' in this class.

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  • Problem when creating Web Service

    - by Polaris
    I am using Visual Studio 2008 SP1 and framework 3.5 sp1 on Windows XP sp3. I have Java service which I consume in my .NET application. When attemp to add web service I get next error: The operation could not be complited.An attempt was made to load a program with an incorrect format But on another machine everything works fine. There is not any error in Java service. I think error in VS. Is anybody have seen this error before?

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  • FormView templates break when refactored to Master/Content

    - by ZaijiaN
    Let's say I have an abstract class IA, with subclasses A1, A2, A3. For each subclass, I had a page with a FormView to insert/edit/view, with code specific to that class. The templates for insert/edit/view are all very similar, so it was mostly cut & paste, and the compiler had no problem that there were controls with the same IDs in the different templates. Something like this: <asp:FormView> <InsertItemTemplate> <asp:Label id="Label1" /> </InsertItemTemplate> <EditItemTemplate> <asp:Label id="Label1" /> </EdittItemTemplate> </asp:FormView> Much of the code/markup ended up being redundant across the pages, so I refactored it to use a master/content format, with the master page having content placeholders for the insert/edit/view templates. Master page: <asp:FormView> <InsertItemTemplate> <asp:ContentPlaceHolder ID="InsertItemTemplate"></asp:ContentPlaceHolder> </InsertItemTemplate> <EditItemTemplate> <asp:ContentPlaceHolder ID="EditItemTemplate"></asp:ContentPlaceHolder> </EdittItemTemplate> </asp:FormView> And content page: <asp:Content ContentPlaceHolderID="InsertItemTemplate"> <asp:Label id="Label1" /> </asp:Content> <asp:Content ContentPlaceHolderID="EditItemTemplate"> <asp:Label id="Label1" /> </asp:Content> In the content page templates, I'm doing the exact same thing I was doing before I refactored, but now the compiler is blowing up with the error BC30260: 'Label1' is already declared as 'Protected WithEvents Label1 As System.Web.UI.WebControls.Label' in this class. For some reason, it's not separating the controls in the content blocks the same way it did when they were in the templates, even though the content placeholders are in the individual templates. Is there a way around this, other than to rename all my controls?

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  • how to ignore already checked checkboxes in vb.net / asp.net ?

    - by user559800
    If i have 3 asp.net checkboxes in my asp.net webform namely : CheckBox1, Checkbox2, Checkbox3 and a textbox namely textbox1 If Checkbox1.text ="1" Checkbox2.text ="2" Checkbox3.text ="3" I WANT : if checkbox1 is already checked ... if checkbox is remain checked and even after i check checkbox2 and checkbox3 then the output in textbox would be 2,3 ..... by ignoring already checked checkbox text ... LOGIC I WANT : Ignore already check checkboxes and insert recent checkbox text to textbox1 as comma seperated string ... How to do that ?

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  • Stateful EJBs in web application?

    - by Sebastien Lorber
    Hello I never used stateful EJBs. I understand that a stateful EJB can be useful with a java client. But i wonder: in which case to use them on a web application? And how? Should we put these stateful beans in Session (because of stateless http)? Is it a good practice? (without debating too much about stateful vs stateless)

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  • Making a Web Gui to design a Garden Layout

    - by paddydub
    I would like to design a web page Gui where users can design a simple interactive garden. The user would pick a template design and receive price estimates based on the design template and the dimensions entered. I'd like the user to be able to move items such as plants, stones and be able to adjust the dimensions of the grass, paving. I'm thinking i could make it using flash but I would like to know there are any other ways I could use to implement this?

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  • How to decide on what hardware to deploy web application

    - by Yuval A
    Suppose you have a web application, no specific stack (Java/.NET/LAMP/Django/Rails, all good). How would you decide on which hardware to deploy it? What rules of thumb exist when determining how many machines you need? How would you formulate parameters such as concurrent users, simultaneous connections and DB read/write ratio to a decision on how much, and which, hardware you need? Any resources on this issue would be very helpful...

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  • Web based client for Amazon S3

    - by Dick Lebavo
    We are looking for a secure online solution to access our files stored on Amazon S3. We have about 3K files, mostly media and documents, that we need to make available to our employees on the move. We don't want to develop anything in-house if there is an existing solution. Please note that our employees are not technologically minded , so a simple web based upload/download GUI would work the best.

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