Search Results

Search found 54664 results on 2187 pages for 'net assembly'.

Page 344/2187 | < Previous Page | 340 341 342 343 344 345 346 347 348 349 350 351  | Next Page >

  • What libraries are available for manipulating super large images in .Net

    - by tpower
    I have some really large files for example 320 MB tif file with 14000 X 9000 pixels. The operations I need to perform are basically scaling the images to get smaller versions of it and breaking the image into tiles. My code works fine with small files and I use the .Net Bitmap objects but I will occasionally get Out of Memory exceptions for larger files. I've tried using the FreeImage libraries FreeImageBitmap but have the same problems. I'm using something like the following to scale the image: using (Graphics g = Graphics.FromImage((Image)result)) { g.DrawImage( source, xOffset, yOffset, source.Width * scale, source.Height * scale ); } Ideally I'd like a third party library to do all the hardwork, but if you have any tips or resources with more information I would appreciate it.

    Read the article

  • Do I need to force the GAC to reload an assembly? Is this possible?

    - by Ben McCormack
    I've added types to my .NET classes that I'm using for COM interop. To get it to work with my VB6 application, I unregistered the DLL and re-registered it (using regasm). I then uninstalled and reinstalled it to the GAC (using gacutil). The types are showing up in the VB6 object explorer, but when I run the application in the VB6 IDE, it breaks on the line that instantiates the new types with the error: Automation Errror - The System cannot find the file specified. I thought this odd since I had already updated the GAC, so I uninstalled the dll from the GAC and got the exact same error, which seems to indicate that the older version of the dll is already in memory and needs to be "reloaded" so that the newer DLL is in memory. Is this possible, and if so, what do I need to do?

    Read the article

  • .NET ORM and Security

    - by Sphynx
    We're going to use an ORM tool with a .NET desktop application. The tool allows creation of persistent classes. It generates all database tables automatically. In addition to other data, our system needs to store user credentials, and deliver access control. The question is, is there any possibility of access control by means of ORM, without creating the database authentication mechanisms manually? Is there any product on the market which allows this? We thought of limiting the access in the program itself, but users can easily access the database directly, and bypass the program limitations. Thanks.

    Read the article

  • Passing Byte (VB.NET)

    - by yae
    Hi I need to pass encoded string to php page. To convert string to iso: Dim result As Byte() = Encoding.Convert(Encoding.UTF8, Encoding.GetEncoding("iso-8859-1"), input) I have this code to pass string, but how I must do it to pass Byte (variable result) instead of the string (variable MyVarString)? Dim client As WebClient Dim data As Stream Dim reader As StreamReader Dim baseurl As String baseurl = "http://example.com/api/mypage2.php" client = New WebClient client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)") client.QueryString.Add("mensaje", MyVarString) data = client.OpenRead(baseurl) reader = New StreamReader(data) s = reader.ReadToEnd() data.Close() reader.Close() Etc.

    Read the article

  • Handling ID's with db4o and ASP.NET MVC2

    - by Craig McGuff
    So, i'm looking at the TekPub sample for ASP.NET MVC2 (http://mvcstarter.codeplex.com/) using DB4o and there are a bunch of templates to create controllers etc, the generated code looks like: public ActionResult Details(int id) { var item = _session.Single<Account>(x=>x.ID == id); return View(item); } Now, my understanding is that using DB4o or a simliar object database that ID's are not required, so how/what exactly do I pass to enable this kind of templated code to function? UPDATE: Both answers were useful, I have modifed the templates to use GUID as the ID. I will add any relevant code/notes here once I see how it works out.

    Read the article

  • .net Diagnostics best practices?

    - by mamu
    We initially didn't use any logging or debug tracing but after spending few weeks to trace down some data corruption we decided to put required Debug.Write and Trace for production and Debug.Assert So now question is What is the best practice to use debug and trace logging. I am just looking for some thing generic. public void AddRectodatabase(object record) { Debug.WriteLine(record.ToString()); Trace.WriteLine(record.ToString()); // Add it to databse Debug.Assert(true, "Use this on case by case basis"); } Is this good enough for general purpose, am i doing anything wrong in there? We want to stick with .net System.Diagnostics over other alternatives like log4net. Is there any thing else useful in System.Diagnostics?

    Read the article

  • Performance of .NET ILMerged assemblies

    - by matt
    I have two .NET libraries: "Foo.Bar" and "Foo.Baz". "Foo.Bar" is self-contained, while "Foo.Baz" references "Foo.Bar". Assuming I do the following: Use ILMerge to merge "Foo.Bar.dll" with "Foo.Baz.dll" into "Foo1.dll". Create a new solution containing the entirity of both "Foo.Bar" and "Foo.Baz" (since I have access to their source code), and compile this into "Foo2.dll". Will there be any differences in the performance of Foo1.dll and Foo2.dll when using their functionality from an external project? If so, how significant is this performance difference, and is it a once-off (on load?) or ongoing difference? Are there any other pros or cons with either approach?

    Read the article

  • How to execute in JavaScript function in ASP.NET using C#

    - by shree-khanal
    i have a textarea which i want to disable when I check a checkbox. I made a working demo in plain HTML and JavaScript , but When I am migrating to Asp.net, neither the function is being executed nor I can keep the OnSelect event in my check box. <asp:CheckBox ID="ChkOthers" runat="server" Text="Others(Please Explain)" Width="205px" AutoPostBack="True" OnCheckedChanged="ChkOthers_CheckedChanged" /> <asp:TextBox ID="TxtOtherReason" runat="server" MaxLength="1024" TextMode="MultiLine" /> i want to create client side validation when check box is checked textbox is enable else disable.

    Read the article

  • Dynamically creating a treeview in HTML with indent lines in ASP.Net

    - by Ben
    Hi, im quite new to HTML, and am trying to create a proffessional looking TreeView. I can not use the in built treeview in ASP.Net as i need to point the target of the selection to another frame (I have tried, and this doesn't seem possible). My treeview is built up as follows: Folder1 ChildOne ChildTwo ChildThree Folder2 ChildOne ChildTwo ChildThree I have the collapsing of the folders working, but would like to know how to format this treeview so it has dotted lines down to the child nodes (as most treeviews tend to have). How would i go about this? Cheers.

    Read the article

  • Where can I find different versions of Lucene.Net Analyzer

    - by Vinay Pandey
    Hi All, I know its silly question but I am struggling in allowing japanese/other such languages search for my web application using lucene.net. I know that different analyzers can be used for all different languages and can be implemented but I could not find any dll for analyzers or example for the same. the question is:- Will using different analyzers be a good option for web application, as search text can be in any form. Where can I find dll and sample application for implementing search for all different sets of language I have spend whole day but no luck :(.

    Read the article

  • Restrict access to a specific URL, running on IIS7 / ASP.NET

    - by frankadelic
    I am deploying a public ASP.NET website on an IIS7 web farm. The application runs on 3 web servers and is behind a firewall. We want to create a single page on the website that is accessible only to internal users. It is primarily used for diagnostics, trigger cache expiry, etc. /admin/somepage.aspx What is the best way to control access to this page? We need to: Prevent all external (public) users from accessing the URL. Permit specific internal users to access the page, only from certain IPs or networks. Should this access control be done at the (a) network level, (b) application level, etc.?

    Read the article

  • Programatically prevent ASP .NET AJAX scripts from rendering

    - by cbp
    Does anyone know of a way that I can stop all the .NET AJAX scripts from rendering, even if a ScriptManager exists on the page? The ScriptManager's Visible property has been overridden and disabled so that you receive a NotImplementedException if you try to set the Visible property. The reason I would like to do this is that I don't want these large chunks of javascript all over my pages when they are not required. The ScriptManager needs to be included on the master page to ensure that only one ScriptManager is added, but it would be stupid to to have to have two versions of the same master page - one ajax enabled and one not. Edit: I am actually using Telerik's RadScriptManager with RadAjax, in case anyone knows a method using these classes instead.

    Read the article

  • detect page refresh jQuery or C# ASP.Net

    - by Marco
    Hello, I was searching for a way of detecting in my C# code if the page had been refreshed (f5). First I don’t know if a jQuery/JavaScript solution would be better than a fully C# ASP.Net. So... the first question would be: What would make you choose one over the other? And the third, and most important part, is if someone would help me with this. Some good tutorial, or article… anything. I tried some solutions out there… but maybe, because of my lack of knowledge they didn’t work. Thanks in advance.

    Read the article

  • datatable works in C# winform but not ASP.NET

    - by Charles Gargent
    Hi I have created a class that returns a datatable, when I use the class in a c# winform the dataGridView is populted corectly using the following code dataGridView1.DataSource = dbLib.GetData(); However when I try the same thing with ASP.NET I get a Object reference not set to an instance of an object. using the following code GridView1.DataSource = dbLib.GetData(); GridView1.DataBind(); What am I doing wrong / missing Thanks EDIT for the curios here is the dbLib class public static DataTable GetData() { SQLiteConnection cnn = new SQLiteConnection("Data Source=c:\\test.db"); SQLiteCommand cmd = new SQLiteCommand("SELECT count(Message) AS Occurances, Message FROM evtlog GROUP BY Message ORDER BY Occurances DESC LIMIT 25", cnn); cnn.Open(); SQLiteDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection); DataTable dt = new DataTable(); dt.Load(dr); return dt; }

    Read the article

  • toggle the grid cells value, ASP.net 3.5

    - by user92027
    Hi For my web application, I want a 10*10 (100 cells which is created dynamically) grid to be displayed in the following manner. 0) Initially all the cells' color is green. 1) If i click on any cell its color becomes red if it is green and if i click again it becomes red.(Toggle the cell color) 2) I should be able to display dynamic number of link buttons in each cell.On the click of which it pop ups a window. Are there any control available for this? Or how can i implement this functionality. I am using ASP.net 3.5.

    Read the article

  • Adding items to Model Collection in ASP.NET MVC

    - by Stacey
    In an ASP.NET MVC application where I have the following model.. public class EventViewModel { public Guid Id { get; set; } public List<Guid> Attendants { get; set; } } passed to a view... public ActionResult Create(EventViewModel model) { // ... } I want to be able to add to the "Attendants" Collection from the View. The code to add it works just fine - but how can I ensure that the View model retains the list? Is there any way to do this without saving/opening/saving etc? I am calling my addition method via jQuery $.load. public void Insert(Guid attendant) { // add the attendant to the attendees list of the model - called via $.load } I would also like to add there is no database. There is no storage persistence other than plain files.

    Read the article

  • Parameter passing Vs Table Valued Parameters Vs XML to SQL 2008 from .Net Application

    - by Harryboy
    As We are working on a asp .net project there three ways one can update data into database when there are multiple rows updation / insertion required Let's assume we need to update employee education detail (which could be 1,3,5 or 10 records) Method to Update Data Pass value as parameter (Traditional approach), If 10 records are there then 10 round trip required Pass data as xml and write logic inside your stored procedure to get that data from xml and update the table (only single roundtrip required) Use Table valued parameters (only single roundtrip required) Note : Data is available as List, so i need to convert it to xml or any other format if i need to pass. There are no. of places in entire application we need to update data in bulk (or multiple records) I just need your suggestions that Which method will be faster (please mention if there are some other overheads) Manageability or testability concern with any approach Any other bottleneck or issue with any of the approach (Serialization /Deserialization concern or limit on size of the data passing) Any other method you suggest for same operations Thanks

    Read the article

  • .Net OutOfMemory on Server but not Desktop

    - by Jörg Battermann
    Is it possible that the .Net framework behaves differently when it comes to garbage collection / memory limitations on server environments? I am running explicitly x86 compiled apps on a 64bit server machine with 32gbs of physical ram and I am running out of memory (SystemOutOfMemoryException) even though nothing but that particular app is running and the server/all other apps utilize 520mb total.. but I cannot reproduce that behaviour on my own (client win7) machine. Now I know that the app -is- memory intensive, but why is it causing problems on the server and not on the client?

    Read the article

  • ASP.net application advice needed

    - by c11ada
    hey all, im biulding a ASP.net application, which is connected to a database. the database design is as follows **Users Table** UserID `(PK) autonumber` Username **Question Table** QuestionID `(PK) autonumber` QuestionNumber QuestionText **Questionnaire Table** QuestionnaireID `(PK) autonumber` UserID `(FK) User Table` Date **Feedback Table** FeedbackID `(PK) autonumber` QuestionnaireID `(FK) Questionnaire Table` QuestionID `(FK) Questions Table` Answer Comment please can some one advise me on how I should go about inserting data into the questionnaire table and the feedback table. I know that the questionnaire table needs to be updated first. but the Questionnaire ID is linked to the feedback table, so how do I go about updating both tables ?

    Read the article

  • PayPal IPN & ASP.NET MVC

    - by Wayne
    Hello - I have a strange problem that somebody can hopefully help me with. For a while now I have been using PayPal's IPN service for our website. In order to test it I have a port opened up on our firewall pointing to my machine. This has been working great with no problems at all. I recently upgraded to the RTM release of ASP.NET MVC and now things are not working. I can navigate to my IPN handler from the outside world so I know it's not my connection or a firewall issue. It simply refuses to recieve any PayPal IPN messages. I am puzzled why the page can be accessed yet the PayPal IPN server wont connect to it. I realize there could be a 1000 different reasons for this, but I am hoping somebody out there can point me in the right direction!

    Read the article

  • VB.net Need Text Box to Only Accept Numbers

    - by Rico Jackson
    I'm fairly new to VB.net (self taught) and was just wondering if someone out there could help me out with some code. I'm not trying to do anything to invovled, just have a textbox that takes numeric value from 1 to 10. I don't want it to take a string or any number above 10. If some types a word or character an error message will appear, telling them to enter a valid number. This is what I have, obviously it's not great as I am having problems. Thanks again to anyone who can help. If TxtBox.Text > 10 Then MessageBox.Show("Please Enter a Number from 1 to 10") TxtBox.Focus() ElseIf TxtBox.Text < 10 Then MessageBox.Show("Thank You, your rating was " & TxtBox.Text) Total = Total + 1 ElseIf IsNumeric(TxtBox.Text) Then MessageBox.Show("Thank you, your rating was " & ValueTxtBox.Text) End If ValueTxtBox.Clear() ValueTxtBox.Focus()

    Read the article

  • Encrypt URL in asp.net

    - by Zerotoinfinite
    Hi All, My site is in asp.net 3.5 and C#. I am sending link to my user through mail, now I want to send each user a specific URL. so instead of sending the clear text I want to send link with encrypted string URL, which I will decrypt on my home page. Like instead of www.mysite.aspx\mypage?userId=12 i'll send www.mysite.aspx\mypage?UserId=)@kasd12 and the same i'll decrypt on my page so that I'll get the userId = 12. Please let me know if my approach is correct and not and how can I encrypt & decrypt the string in simplest and easier manner. Thanks in advance.

    Read the article

  • Static DB Provider in ASP.NET MVC Causing Memory Leak

    - by user364685
    Hi, I have got an app I'm going to write in ASP.NET MVC and I want to create a DatabaseFactory object something like this:- public class DatabaseFactory { private string dbConn get { return <gets from config file>; } public IDatabaseTableObject GetDatabaseTable() { IDatabaseTableObject databaseTableObject = new SQLDatabaseObject(dbConn); return databaseTableObject; } } and this works fine, but I obviously have to instantiate the DatabaseFactory in every controller that needs it. If I made this static, so I could, in theory just call DatabaseFactory.GetDatabaseTable() it would cause a memory leak, wouldn't it?

    Read the article

  • .NET SerialPort.Read skipps bytes

    - by Lukas Rieger
    Solution Reading the data byte wise via "port.ReadByte" is too slow, the problem is inside the SerialPort class. i changed it to reading bigger chunks via "port.Read" and there are now no buffer overruns. although i found the solution myself, writing it down helped me and maybe someone else has the same problem and finds this via google... (how can i mark it as answered?) EDIT 2 by setting port.ReadBufferSize = 2000000; i can delay the problem for ~30 seconds. so it seems, .Net really is too slow... since my application is not that critical, i just set the buffer to 20MB, but i am still interested in the cause. EDIT i just tested something i had not thought of before (shame on me): port.ErrorReceived += (object self, SerialErrorReceivedEventArgs se_arg) => { Console.Write("| Error: {0} | ", System.Enum.GetName(se_arg.EventType.GetType(), se_arg.EventType)); }; and it seems that i have an overrun. Is the .Net implementation too slow for 500k or is there an error on my side? Original Question i built a very primitive oszilloscope (avr, which sends adc data over uart to an ftdi chip). On the pc side i have a WPF Programm that displays this data. The Protokoll is: two sync bytes (0xaffe) - 14 data bytes - two sync bytes - 14 data bytes - ... i use 16bit values, so inside the 14 data bytes are 7 channels (lsb first). I verified the uC Firmware with hTerm, and it does send and receive everything correct. But, if i try to read the data with C#, sometimes some bytes are lost. The oszilloscop programm is a mess, but i created a small sample application, which has the same symptoms. I added two extension methods to a) read one byte from the COM Port and ignore -1 (EOF) and b) wait for the sync pattern. The sample programm first syncs onto the data stream by waiting for (0xaffe) and then compares the received bytes with the expected values. the loop runs a few times until an assert failed message pops up. I could not find anything about lost bytes via google, any help would be appreciated. Code using System; using System.Collections.Generic; using System.Diagnostics; using System.IO.Ports; using System.Linq; using System.Text; using System.Threading.Tasks; namespace SerialTest { public static class SerialPortExtensions { public static byte ReadByteSerial(this SerialPort port) { int i = 0; do { i = port.ReadByte(); } while (i < 0 || i > 0xff); return (byte)i; } public static void WaitForPattern_Ushort(this SerialPort port, ushort pattern) { byte hi = 0; byte lo = 0; do { lo = hi; hi = port.ReadByteSerial(); } while (!(hi == (pattern >> 8) && lo == (pattern & 0x00ff))); } } class Program { static void Main(string[] args) { //500000 8n1 SerialPort port = new SerialPort("COM3", 500000, Parity.None, 8, StopBits.One); port.Open(); port.DiscardInBuffer(); port.DiscardOutBuffer(); //Sync port.WaitForPattern_Ushort(0xaffe); byte hi = 0; byte lo = 0; int val; int n = 0; // Start Loop, the stream is already synced while (true) { //Read 7 16-bit values (=14 Bytes) for (int i = 0; i < 7; i++) { lo = port.ReadByteSerial(); hi = port.ReadByteSerial(); val = ((hi << 8) | lo); Debug.Assert(val != 0xaffe); } //Read two sync bytes lo = port.ReadByteSerial(); hi = port.ReadByteSerial(); val = ((hi << 8) | lo); Debug.Assert(val == 0xaffe); n++; } } } }

    Read the article

  • My ASP.NET page is making postback on web server and not on local host

    - by Rizwan Aaqil
    I have created a website in ASP.NET = www.vif-tech.com/BidsOnline When I am running it on Localhost using Visual Studio 2008, its running perfectly without any postback because I am using Ajax Update Panels (where data is changing constantly). But when I am running from my web server i.e. www.vif-tech.com/BidsOnline, its making postbacks every seconds. Even I tried changing connection string on my localhost and tried connecting to main database (not on my localhost), it's still making postbacks. Is there some error in my DB or page ?

    Read the article

< Previous Page | 340 341 342 343 344 345 346 347 348 349 350 351  | Next Page >