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  • Facebook canvas app ASP.NET MVC HttpException: Invalid Model

    - by zznq
    I am working on a Facebook tab application. I am using asp.net MVC 2 with the "official" Microsoft Facebook SDK. Most of my views are working just fine. However, I have one that is causing a huge mess. I am simply returning a List<Tags> to the view and as my ViewModel. This problematic view is simply displaying the list in a foreach loop. Whenever navigate to this view I get a "System.Web.HttpException: Invalid Model" exception. The most puzzling part of all this is that the same code is running without fail on our regular(non-Facebook) app that works just fine with the same code. Any insight into why Facebook and asp.net MVC 2 would be causing this behavior would be much appreciated.

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  • Current ways to do data binding in .NET 3.5 with C# 3.0 and WinForms

    - by kryptic
    Hello Everyone, I have an existing C# 3.0 WinForms project with .NET 3.5 that talks to a MySQL database. I would like to use data binding (I'm new to this, so I've been doing all of the UI updates manually) to simplify things. I followed a link from this question to this article which mentions using a DataSet but also follows up with "my view on this topic is strongly in favor of Business Objects." Also that was with .NET 2.0. What are the current methods to use data binding with a WinForms application? What are their advantages in terms of simplicity, how much additional code is necessary, etc. For reference, I use an ORM approach to build objects with public properties from a database. I want to map these properties for each object onto UI elements like TextBoxes. There could be many properties for an object so I want to simplify the code to do this.

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  • Custom Logic and Proxy Classes in ADO.NET Data Services

    - by rasx
    I've just read "Injecting Custom Logic in ADO.NET Data Services" and my next question is, How do you get your [WebGet] method to show up in the client-side proxy classes? Sure, I can call this directly (RESTfully) with, say, WebClient but I thought the strong typing features in ADO.NET Data Services would "hide" this from me auto-magically. So here we have: public class MyService : DataService<MyDataSource> { // This method is called only once to initialize service-wide policies. public static void InitializeService(IDataServiceConfiguration config) { config.SetEntitySetAccessRule("Customers", EntitySetRights.AllRead); config.SetServiceOperationAccessRule("CustomersInCity", ServiceOperationRights.All); } [WebGet] public IQueryable<MyDataSource.Customers> CustomersInCity(string city) { return from c in this.CurrentDataSource.Customers where c.City == city select c; } } How can I get CustomersInCity() to show up in my client-side class defintions?

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  • .net Connectivity to mainframe

    - by vinod
    Can any one please suggest me the best approach to connect to mainframe from .net. I have to develop an web application, in which i have to follow NIEM standards for data exchange between two end clients. the interface i have to develop will be on .net. i don't have any knowledge on mainframe, i have come across that there are ODBC connectivity/ MQ series. i'm afraid which approach to follow on as i have less knowledge on the mainframe system. any suggestion would be really helpfully to me. any article , links or sample code will be greatly appreciated Thanks

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  • Lucene.Net PrefixQuery

    - by Sole
    Hi, i´m development a suggest box for my site search service. I has to search fields like these: Visual Basic Enterprise Edition Visual C++ Visual J++ My code is: Directory dir = Lucene.Net.Store.FSDirectory.GetDirectory("Index", false); IndexSearcher searcher = new Lucene.Net.Search.IndexSearcher( dir,true); Term term = new Term("nombreAnalizado", _que); PrefixQuery query = new PrefixQuery(term); TopDocs topDocs = searcher.Search(query, 10000); This code works well in this case: "Enterprise" will match "Visual Basic Enterprise Edition" But "Enterprise E" doesn´t match anything. I removed white spaces at indexing time and when the user is searching. Thanks.

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  • Dealing with XML in ASP.NET MVC

    - by Matt W
    I have a block of XML in a database which is easy enough to pull out using ASP.NET MVC, however I would like to access and modify the XML in an way more consistent with class instances. Is there a way to get the MVC (or any other model) to generate a data access (or perhaps Entity) class set from the DB-stored XML? If the above is rather obtuse, the question could be summarised as; What method would you use to best access and modify XML stored in a database from an ASP.NET MVC application? Thanks, Matt.

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  • IIS6 Problems with ASP.NET MVC.

    - by Markus
    Hello, I have a ASP.NET MVC page. I Configured a IIS Website and added the additonal H:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\aspnet_isapi.dll. my Directory Structure is like that / ../App_data/ ../bin/ ../Content/ ../Properties/ ../Scripts/ ../Views/ ../Default.aspx ../Global.asax ../Web.config My page is configured to port 9090. If i try to access the page i get the "default" Page. But if i try to access any other page than the //myServer:9090 like //myServer:9090/home (which is the default method in my HomeController) i get a "page not found" error page. For me it looks like he does'nt execute the assambly. In the Debbuging Server all runs nice. What could be the Problem? P.S: If i forgort something pls ask for! thanks!

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  • Recursive TreeView in C# ASP.NET

    - by waqasahmed
    I have an object of type list from which I wish to use to populate a treeview in asp.net c#. Each object item has: id | Name | ParentId so for example: id | Name | ParentId 1 | Alice | 0 2 | Bob | 1 3 | Charlie | 1 4 | David | 2 In the above example, the parent would be Alice having two children Bob and Charlie. David is the child of Bob. I have had many problems trying to dynamically populate the treeview recursively in c# ASP.NET Does any one have a simple solution? Btw: you can use People.Id, People.Name and People.ParentId to access the members since it is an object belonging to list. I can post you my code so far (many attempts made) but not sure how useful it will be.

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  • Get control instance in asp.net dynamic data

    - by Ashwani K
    Hello All: I am creating a web application using Asp.net dynamic data. I am using GridView to show data from the database. In the grid view I am having following code for columns <Columns> <asp:DynamicField DataField="UserId" UIHint="Label" /> <asp:DynamicField DataField="Address" UIHint="Address"/> <asp:DynamicField DataField="CreatedDate" UIHint="Label" /> </Columns> But, before displaying I want to do some processing in C# code for each row. In normal ASP.net grid view we can handle OnRowDataBound method, and using FindControl("controlid") we can get the control instance, but in case of dynamic data, I am not getting any id attribute for columns, so I am not able to get the control instance to show updated data in that control depending on some conditions. Thanks, Ashwani

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  • SAP .NET Connector

    - by mehmet6parmak
    Hi all, I need to connect to SAP and do a simple update but it will be the first time for me connecting to SAP and i know almost nothing. After some search on web i learned that there is an API which works only in visual studio 2003 (SAP .NET Connector). But i have a win7 .net 3.5 sp1 system. Is there any free way to connect to SAP using visual studio 2008 on the system above? (Free means without additional payment, we have an SAP account) Thanks...

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  • .NET equivalent to Perl regular expressions

    - by r_honey
    I need to convert a Perl script to VB.NET. I have managed almost the entire conversion, but some Perl (seemingly simple) regex are causing an headache. Can someone suggest me .NET equivalent of the following perl regex: 1) $letter =~ s/Users //,; $letter =~ s/Mailboxes //,; if($letter =~ m/$first_char/i){ 2) unless($storegroup =~ /Recovery/ || $storegroup =~ /Users U V W X Y Z/ || $storegroup =~ /Users S T/ || $storegroup =~ /Users Q R/){ The regex look simple to me. I tried to wade through perl.org but understanding a langugae regex takes sometime and I need to complete the conversion quickly.

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  • Data import wizard library for .Net?

    - by Phil
    Does anyone know of a 3rd party data import wizard that can be embedded into applications? It should import from Excel, Access, SQLServer, csv, tab-separated flat file, XML, Oracle etc. We have a fixed data structure within our application and the user should be able to configure the wizard to match his/her import fields to our own data structure. The wizard should be a library of sorts – preferably a .Net type library. We may want to have it both web-based and desktop based (hence we may need an ASP.Net controls version and a Winforms version). We may also want integration with WPF and Silverlight. If there’s no UI wizard available, does anyone know of a non-UI library that supports easily configurable import from many, many different datasources?

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  • Why is the form action attribute empty on production server?

    - by Ozzy
    After deploying a ASP.NET WebForms application to a production server some of the ajax calls has stopped working for me. After some debugging I found out that the following statement (in the internal client-method WebForm_DoCallback) was causing the problem: xmlRequest.open("POST", action, true); The problem seemed to be that the action-variable was empty so after checking the rendered html I found out that the form-tag rendered on the production server looks like: <form method="post" action="" id="Form1"> However, on my developer machine I get the following: <form method="post" action="default.aspx" id="Form1"> So, why would the action-attibute render on my dev.machine but not on the production server? This seems to be the case only for one specific web form, when I look on other pages the action-attribute renders correctly. Any suggestions or ideas would be helpful!

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  • ASP.Net JSON Web Service Post Form Data

    - by Will D
    I have a ASP.NET web service decorated with System.Web.Script.Services.ScriptService() so it can return json formatted data. This much is working for me, but ASP.Net has a requirement that parameters to the web service must be in json in order to get json out. I'm using jquery to run my ajax calls and there doesn't seem to be an easy way to create a nice javascript object from the form elements. I have looked at serialiseArray in the json2 library but it doesn't encode the field names as property name in the object. If you have 2 form elements like this <input type="text" name="namefirst" id="namefirst" value="John"/> <input type="text" name="namelast" id="namelast" value="Doe"/> calling $("form").serialize() will get you the standard query string namefirst=John&namelast=Doe calling JSON.stringify($("form").serializeArray()) will get you the (bulky) json representation [{"name":"namefirst","value":"John"},{"name":"namelast","value":"Doe"}] This will work when passing to the web service but its ugly as you have to have code like this to read it in: Public Class NameValuePair Public name As String Public value As String End Class <WebMethod()> _ Public Function GetQuote(ByVal nvp As NameValuePair()) As String End Function You would also have to wrap that json text inside another object nameed nvp to make the web service happy. Then its more work as all you have is an array of NameValuePair when you want an associative array. I might be kidding myself but i imagined something more elegant when i started this project - more like this Public Class Person Public namefirst As String Public namelast As String End Class which would require the json to look something like this: {"namefirst":"John","namelast":"Doe"} Is there an easy way to do this? Obviously it is simple for a form with two parameters but when you have a very large form concatenating strings gets ugly. Having nested objects would also complicate things The cludge I have settled on for the moment is to use the standard name value pair format stuffed inside a json object. This is compact and fast {"q":"namefirst=John&namelast=Doe"} then have a web method like this on the server that parses the query string into an associate array. <WebMethod()> _ Public Function AjaxForm(ByVal q As String) as string Dim params As NameValueCollection = HttpUtility.ParseQueryString(q) 'do stuff return "Hello" End Sub As far a cludges go this one seems reasonably elegant in terms of amount of code, but my question is: is there a better way? Is there a generally accepted way of passing form data to asp.net web/script services?

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  • My HttpHandler doesn't want to create directory on a network

    - by Daok
    I use this simple line of code inside my HttpHandler: Directory.CreateDirectory(@"\\srv-001\dev\folderToCreate\"); I receive an UnauthoridezAccessException telling me that the access to the path is denied. From here, I create a little Dos application in C# doing the same thing and I was able to create the folder. So, I thought that it might be that IIS is running on a different user than myself. I went to IIS and changed the Application pool to a Custom user, myself. But, unfortunately, I got the same exception. I have try to create a Share folder on my computer and I can create directory. Also, when debugging I can see that System.Threading.Thread.CurrentPrincipal.Identity have its AuthenticationType to "", IsAuthenticated to false and name to "". So, with all those tests I can conclude that the HttpHandler that receive the file cannot create a directory because of some security access. How can I grand access to my HttpHandler to be able to create a directory (and files) to a network folder?

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  • asp.net search application index update help

    - by srinivasan
    hi im developing a simple search application( ASP.Net VB.Net) the index table is actually a hash table ll be stored in my file system. the search page ll open this in read mode n copy this to a hash table object n perform search. other update n delete functions will open this in write mode n update it. what should i ve to do to make this app correct that there shud not be any execption when multiple user accessing these things at the same time. wat do i ve to do to make this robust and error free. i want multiple users to access search page without any problem n the index updation also in a parallel manner thanks srinivasan

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  • Handling events exposed on a .NET class via COM in VB6

    - by PeanutPower
    Handling events exposed on a .NET class via COM in VB6 My test .NET (class libary registered for interop in compiler settings) code: Imports System.Runtime.InteropServices <InterfaceType(ComInterfaceType.InterfaceIsIDispatch), ComVisible(True)> _ Public Interface MyEventInterface <DispId(1)> Event Exploded(ByVal Text As String) <DispId(2)> Sub PushRedButton() End Interface <ClassInterface(ClassInterfaceType.None)> _ Public Class EventTest Implements MyEventInterface Public Event Exploded(ByVal Text As String) Implements MyEventInterface.Exploded Public Sub PushRedButton() Implements MyEventInterface.PushRedButton RaiseEvent Exploded("Bang") End Sub End Class My test VB6 application winforms code (which references the above class libary): Public ct As New ComTest1.EventTest Private Sub Command1_Click() ct.add_Exploded (ExplodedHandler) ct.PushRedButton ct.remove_Exploded (ExplodedHandler) End Sub Private Sub ExplodedHandler(ByVal Text As String) MsgBox Text End Sub Specifially I'm not sure how to set up the handler in VB6 the compile error I get is "Argument not optional" on this line in the VB6: ct.add_Exploded (ExplodedHandler)

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  • Do ASP.Net Web Forms actually produce ADA compliant HTML? Does the ASP/AJAX toolkit undermine the goal of ADA compliance?

    - by Justin984
    I'm trying to convince my employer to let us use the Microsoft ASP/AJAX toolkit since it simplifies the implementation of many controls. However they have rejected the idea on the grounds that it produces "AJAX code" which is not ADA compliant. However the same employer requires webpages to be written in ASP.NET Web Forms which, as far as I can tell from the source, is very very far from ADA compliance. I am new to both web programming and ADA compliance. My questions are: Do ASP.Net Web Forms actually produce ADA compliant HTML? Will the ASP/AJAX toolkit undermine the goal of ADA compliance?

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  • XML Validation in ASP.NET MVC during load

    - by Jamie Nordmeyer
    I'm writing an ASP.NET MVC 2 application where one of the backing stores I plan to support is XML. I have a POCO that represents the settings for the site, along with an XML file to contain these settings. My question is what is the best way to validate this data as it is read from disk in to the POCO? I know I can use an XSD, or maybe use the Data Annotations library to mark up the POCO, and use reflection to validate the data, but is there another way, perhaps in .NET 3.5 or MVC to do this? I've spent some time Googling this issue, and want to be sure I'm doing it in the best manner. Thanks in advance!

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