i've just begun building a messaging system bit like the inbox feature in facebook and myspace. Its for my final year project. I was just wondering when a message is typed and the button "reply" is pressed, should the data go to the database? and then how can i display it like a thread on that page?
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Im creating a messaging system abit like the inbox feature of facebook and even this website (its gonna be created as a asp.net website). Now the messages ive been told should go to a database and then from there be displayed on a page. Im gonna be creating this system because its a project for university. Its not going to be published online or anything, just a simple demo in front of suoervisor n examiner. Im gonna simply create a database within the application to hold all the data.Now i need to have user login feature capability so the right messages are displayed to the right users. I wants the messages to be as a "thread". Any idea how this can be done in asp.net? im using visual studio 2008 .net framework 3.5.
View 1 RepliesIm creating a messaging system which is a bit like the inbox feature of this forum. So far I have built the page with a datalist (as this is the advice i was given). I just want to know how I should create the tables within the database so that the thread of messages is seen by the right people when they login and view messages. Which is basically the 2 people messaging each other. The system is gonna have user sign in functionality as well.
View 1 RepliesI was planning on handling the Session_OnEnd Event to check for new messages from other users in the database and display them, but the timeout value only works in minutes, not seconds. If there anything else that I can do to process an event every two seconds for a certain web page?
View 5 RepliesI have a website with auctions and i want to notify the winner. In a forum on my website users have an inbox and i want to send the message to there if they are the winner. Is there a way to message internally?
View 1 Repliesi am trying to add some functionality that will send alerts to people on a website.. for example... some action happens.. and triggers an alert on another users screen.. does anybody know of a messaging service that will listen for updates.. etc.. and popup some messages.. something generic that you could customize the messages would be nice..
View 2 RepliesI have to create a Mailbox, just like Gmail..... I am brand new to asp.net MVC
I dont know how to start..how to design the view and write controllers for the Inbox and all..
the specification are as follows:-
Left navigation bar:
Inbox
Compose
Sent
Draft
*** Label1**
MyLabel1
Sub-label1
Sub-Label
My Label2....
Main Content contain the List of messages as selected Inbox, sent, draft and all
I'm currently trying to interface our new intranet (ASP-MVC) with the web front end of our pager system. The pager system's front end is about 10 years old, poor interface and no documentation. To do this I have the form on the intranet post to the server, our server then sends an HTTP POST to the pager server that mimics what its own form sends.
While testing this for overloading (we sent about 10 messages almost concurrently) the pager server crashed, as the system is a black box and the only difference we noticed was the concurrent POSTs the least we can do is try to prevent this happening.I want to have all messages go into a queue that sends at most once every 5-10 seconds but I'm not sure how to implement this,
I didn't specify this earlier but the process should be synchronous from the point of view of the browser, ie webserver gets the http POST request from the browser, message is put into the queue, message is sent from the queue, webserver sends http response to the browser. This is not a high volume service and I expect simultaneous requests to be rare so response will be near instantaneous, it is more of a throttle to prevent potential issues with concurrent requests.
for years now I have had a problem with trying to design the best database design for an internal email messaging system for a website.
I would have thought that this would be a fairly easy thing to think of at this point in my development history but it still eludes me to no end.
What irratates me even more is that I would think i could find something online giving more detail about it but i have yet to find the right search term to use
i work with visual studio 2005 and asp net 2.0. i have a method method as this :
[Code]....
this problem is follow if i run the web method and don't enter a string and a int a receive this message : System.ArgumentException: Cannot convert to System.Int32. ok when i arrive in the method i can check if lists is empty but how i can do if int is NULL because i don't want to returns a error if people run my web method and don't enter the parameters.
im tryign to move a listbox item from one listbox to another heres my c# for moving from populated listbox to unpopulated
[Code]....
when i run the addtable function on one of my buttons it doesnt work, so i tried just outputing to a label the value of the slected item, didnt work
i opened google chrome console to find the below which led me to belive i need to add System.Windows.Forms; to get it working?
ScriptResource.axd?d=eapqzlwXhBFph23Pl_2pOrzTVt5-WN-w1AJhJtJAxUGjg5h6xiIW5VowmUQ2aKwAieU-I4882cg5dWnZWQpkyvximpbl-emU1vXDRe137NMq7e8sEJ6W-wJLYpPH8ryr7g79lqLpeL1CaNGbVvthubXLUxDQz86JoZP_jf82s1h2aflGevqjjph2odUMt3SI0&t=2610f696:868Uncaught
Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException:
Object reference not set to an instance of an object.
Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.TextBox'.
[code]....
Basically, what I did is that: I have a table in SQL database and some of data fields allow null. I built Objectdatasource through dataset. When I built update page using dataset. It generate the following error before showing the update page correctly. It seems I have issue to retrieve the null value from the database through using objectdatasource through dataset. Any suggestions?An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code
View 6 RepliesI am trying to upload a picture into database using FormView insertItemTemplate. FormView is bounded by objectdatasource.To upload, I placed FileUpload control inside insertItemTemplate.In table the dataType is image.Error:Object of type 'System.Boolean' cannot be converted to type 'System.Byte[]'.
View 3 Replies[Code]....
Above is my code. The error I'm get is, Unable to cast object of type 'System.DateTime' to type 'System.String'.
The column "To" and column "Subject" are strings and column "Receive" is DateTime. I can't made any changes in the database, so I need to write some code to handle casting a string to datetime or if statement as a work around.
Unable to cast object of type 'System.String' to type 'System.Byte[]'....
on line #2
private void download(DataTable dt) { Byte[] bytes = (Byte[])dt.Rows[0]["FileData"];
Response.Buffer = true; Response.Charset = "";
I am writing unit tests for fluent Nhibernate, when I run the test in isloation it passes, but when I run multiple tests. or run the test more than once it starts failing with the message below System.ApplicationException : For property 'Id' expected '1' of type 'System.Int32' but got '2' of type 'System.Int32'
[TextFixture]
public void Can_Correctly_Map_Entity()
{
new PersistenceSpecification<UserProfile>(Session)
.CheckProperty(c => c.Id, 1)
.CheckProperty(c => c.UserName, "user")
.CheckProperty(c => c.Address1, "Address1")
.CheckProperty(c => c.Address2, "Address2")
}
I have been trying to get the data display on the datagrid after selecting a customer.
With the same connection it populates the selection right. But just do not seem to extract the following SQL.
The litABC is to check the flow of control.
There is no syntax error but in the debug menu,
I got A first chance exception of type 'System.Data.Odbc.OdbcException' occurred in System.
Where did I do wrong?
[code]....
I have a project that it had been developed under MVC1 and after aa few months ago I upgraded it in MVC2.
Everything was well, uppon the day I needed to format my computer.
And what can goes wrong with a format? I don't know
I have installed the MVC2, I build the project, no error displayed, but from the time I've uploaded the project in the production server
I am getting this error.
Method not found: 'System.Web.Mvc.MvcHtmlString System.Web.Mvc.Html.LinkExtensions.RouteLink(System.Web.Mvc.HtmlHelper, System.String, System.Object)'.
I can't understand what caused the problem.
Certainly I assumed that is have to do with MVC1 and I referenced it, but with no luck
again.
Theese are the methods that the problem is came from
[Code]....
i have installed ajax control kit successfully and all controls already came in toolbar tab named "Ajax Control toolkit"But when i try to design any page using with ajax control toolkit, follow error is coming:
Could not load type 'System.Web.UI.ScriptReferenceBase' from assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.TypeLoadException: Could not load type 'System.Web.UI.ScriptReferenceBase' from assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.
Source Error:[Code]....
Stack Trace: [Code]....
[TypeLoadException: Could not load type 'System.Web.UI.ScriptReferenceBase' from assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.]
AjaxControlToolkit.ToolkitScriptManager.OnResolveScriptReference(ScriptReferenceEventArgs e) in [code]...
I am using VIsual Studio 2008 , framework 3.5 but i don't know why in error information version is showing 2.0
i install tool kit according 3.5 framework.also note, framework built-in ajax tags i can use fine and they work properly.
Can anyone tell me the differnce between
System.web.httpcontext.current.application["tag"]
or
System.Configuration.Appsettings["tag"]
I am attempting to use SqlBulkCopy to import data from an XML document. I receive the following error when executing WriteToServer: Invalid cast from 'System.String' to 'System.Guid'
View 1 RepliesAn unhandled exception of type 'System.InvalidOperationException' occurred in System.Xml.dll
View 1 RepliesWhen i fill my sql adapter daAuthors.Fill(dsPubs, "MYTable") sometime i get A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dllmy code can run for a lot hours without any problems but sometime i get the message
View 1 Repliesi have installed ajaxtoolkit 3.5 but when i debug i am getting this error Could not load type 'System.Web.UI.ScriptReferenceBase' from assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' even i have changed my tags to
<asp:ToolkitScriptManager
ID="ToolkitScriptManager1"
EnablePartialRendering="true"
runat="server"></asp:ToolkitScriptManager>
