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  • vb.net program cannot connect to wampserver

    - by user225269
    I have a vb.net program that uses mysql as its database. And it works when the computer has wampservr installed. But the program gets an unhandled exception error when the computer where its running does not have a wampserver. The only thing that is installed in it is the mysql connector net. How do I make it work. I just want the two programs to access the same mysql database. I already opened port 20 by configuring firewall. Both in TCP and UDP. What do I do? Do I have to tweak the codes?

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  • .NET invoking against an arbitrary control.

    - by kerkeslager
    I have a method which takes in a .NET control and calls invoke against it like so: Form.Invoke(Target); However, I've run into an issue numerous times calling this method where due to timing or whatever, the form handle on the form doesn't exist, causing a Invoke or BeginInvoke cannot be called on a control until the window handle has been created error. In frustration, I jokingly changed the code to: MainForm.Invoke(Target); where MainForm is the main window of the application (the form handle for the main form is created at startup and remains active for the entire life cycle of the application). I ran all the tests and manually tested the application and everything seems to work fine despite the fact that this is used everywhere. So my question is, what exactly is the meaning of invoking against a specific control? Is there any downside to just always invoking against a control you know will be active? If not, why does .NET have you invoke against a control in the first place (instead of just creating a static GuiThread.InvokeOnGuiThread(Blah);)?

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  • Best practices for fixed-width processing in .NET

    - by jmgant
    I'm working a .NET web service that will be processing a text file with a relatively long, multilevel record format. Each record in the file represents a different entity; the record contains multiple sub-types. (The same record format is currently being processed by a COBOL job, if that gives you a better picture of what we're looking at). I've created a class structure (a DATA DIVISION if you will) to hold the input data. My question is, what best practices have you found for processing large, complex fixed-width files in .NET? My general approach will be to read the entire line into a string and then parse the data from the string into the classes I've created. But I'm not sure whether I'll get better results working with the characters in the string as an array, or with the string itself. I guess that's the specific question, string vs. char[], but I would appreciate any other pointers anyone has. Thanks.

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  • NLog not logging messages on XP SP3 with .NET 3.5 Client Profile

    - by oltman
    I'm writing a program that is targeting the .NET 3.5 Client Profile and using NLog. I configure my logger programmatically on start up (no config file.) It works perfectly on Vista and Windows 7, but when running on a fresh install of XP SP3 with the .NET Client Profile installed, it will not log any of the variables in the layout string. For example, with the layout string set to: target.Layout = "MESSAGE: ${longdate}|${level}|${message}"; It will log "MESSAGE: | | |" Again, this only happens on XP SP3, and the logger is set to throw exceptions. Any ideas what may be causing this?

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  • Long labels appear to be hidden with "..." - MS Chart Pie Graph control

    - by Mike
    I would like the labels to be completely visible, and if necessary, just spin the pie chart so that the text will fit without being hidden with "...". Here is an example Anyone know how to fix this so it is not shortened? This is the control on my asp page. <asp:CHART ID="Chart1" runat="server" BorderColor="181, 64, 1" BorderDashStyle="Solid" BorderWidth="2" Height="371px" ImageLocation="~/TempImages/ChartPic_#SEQ(300,3)" ImageType="Png" Palette="None" Width="693px" BorderlineColor=""> <legends> <asp:Legend BackColor="Transparent" Enabled="False" Font="Trebuchet MS, 8.25pt, style=Bold" IsTextAutoFit="True" Name="Default"> </asp:Legend> </legends> <series> <asp:Series ChartArea="ChartArea1" ChartType="Pie" Legend="Default" Name="Series1" CustomProperties="PieLabelStyle=Outside, PieDrawingStyle=Concave" YValuesPerPoint="6" Font="Trebuchet MS, 8.25pt, style=Bold"> <SmartLabelStyle AllowOutsidePlotArea="No" MaxMovingDistance="100" /> </asp:Series> </series> <chartareas> <asp:ChartArea BackColor="#DEEDF7" BackGradientStyle="TopBottom" BackSecondaryColor="White" BorderColor="64, 64, 64, 64" BorderDashStyle="Solid" Name="ChartArea1" ShadowColor="Transparent"> <Area3DStyle Enable3D="True" IsRightAngleAxes="False" /> </asp:ChartArea> </chartareas> </asp:CHART> Thanks.

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  • Static compilation in the .NET world

    - by AngryHacker
    I'll be writing a small desktop app for a client that has WinXP machines and they won't be installing the .NET framework (at least not for me). So my choices are limited to either C++ or VB6, neither of which sound great. I remember reading back in the day that Mono came up with a static compiler, but recently the only thing I could find is Miguel de Icaza's entry on static compilation for a game engine for the purposes of running the app on the iPhone - not what I had in mind. Are there any products out there, free or commercial that will allow me to statically compile my .net 3.5 winform app? Thanks

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  • Using AesCryptoServiceProvider in VB.NET

    - by Collegeman
    My problem is actually a bit more complicated than just how to use AES in VB.NET, since what I'm really trying to do is use AES in VB.NET from within a Java application across JACOB. But for now, what I need to focus on is the AES implementation itself. Here's my encryption code Public Function EncryptAES(ByVal toEncrypt As String, ByVal key As String) As Byte() Dim keyArray = Convert.FromBase64String(key) Dim toEncryptArray = Encoding.Unicode.GetBytes(toEncrypt) Dim aes = New AesCryptoServiceProvider aes.Key = keyArray aes.Mode = CipherMode.ECB aes.Padding = PaddingMode.ISO10126 Dim encryptor = aes.CreateEncryptor() Dim encrypted = encryptor.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length) aes.Clear() Return encrypted End Function Once back in the Java code, I turn the byte array into a hexadecimal String. Now, to reverse the process, here's my decryption code Public Function DecryptAES(ByVal toDecrypt As String, ByVal key As String) As Byte() Dim keyArray = Convert.FromBase64String(key) Dim toDecryptArray = Convert.FromBase64String(toDecrypt) Dim aes = New AesCryptoServiceProvider aes.Key = keyArray aes.Mode = CipherMode.ECB aes.Padding = PaddingMode.ISO10126 Dim decryptor = aes.CreateDecryptor() Dim decrypted = decryptor.TransformFinalBlock(toDecryptArray, 0, toDecryptArray.Length) aes.Clear() Return decrypted End Function When I run the decryption code, I get the following error message Padding is invalid and cannot be removed.

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  • html.actionlink with .net 4.0 renders empty links

    - by tmfkmoney
    This should hopefully be a simple configuration problem. When my application targets .Net 3.5 This code <%= Html.ActionLink("Forgot your password?","ForgotPassword") %> renders this: <a href="/Account/ForgotPassword">Forgot your password?</a> When my application targets .Net 4.0 The same code renders: <a href="">Forgot your password?</a> It's dropping the url part. backwards compatibility is supposedly enabled in my web.config. <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"> Ideas?

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  • Best practices for organizing .NET P/Invoke code to Win32 APIs

    - by Paul Sasik
    I am refactoring a large and complicated code base in .NET that makes heavy use of P/Invoke to Win32 APIs. The structure of the project is not the greatest and I am finding DllImport statements all over the place, very often duplicated for the same function, and also declared in a variety of ways: The import directives and methods are sometimes declared as public, sometimes private, sometimes as static and sometimes as instance methods. My worry is that refactoring may have unintended consequences but this might be unavoidable. Are there documented best practices I can follow that can help me out? My instict is to organize a static/shared Win32 P/Invoke API class that lists all of these methods and associated constants in one file... (The code base is made up of over 20 projects with a lot of windows message passing and cross-thread calls. It's also a VB.NET project upgraded from VB6 if that makes a difference.)

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  • Perfmon on Vista to monitor .Net CLR memory for dutch dummies

    - by Dabblernl
    OK... My managed .Net program is eating memory leading it to crash after a few hours with a OutOfMemoryException. I want to investigate this starting with using perfmon.exe. I found a description on how to do this here However, I have a dutch Vista and the terms used differ widely from the ones used in this blog and I find myself simply unable to set it up. Can someone point me the way by stating "first from the top,second from the left" how to set up a performance monitor for my .Net program?

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  • WCF Web Services and native ASP.NET Health Monitoring

    - by elsharpo
    hi guys, I need a final answer to the following question! :-) I was wondering if you can enable Health Monitoring for WCF Web services. I'm hosting a number of services in IIS and configured it to send the team email notification when any exceptions are thrown. I feel that Health Monitoring does not work with WCF Services and that I have to configure WCF Tracing http://msdn.microsoft.com/en-us/library/ms733025.aspx Thank you

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  • .NET and 64-bit application

    - by user54064
    I want to make existing .NET applications (WinForms and WebForms) run on 64-bit machines, optimized to take advantage of more memory available on 64-bit machines. What do I need to do to the applications to take advantage of the memory? Do I just select the target CPU as 64-bit? What is the advantage of selecting the target versus just compiling the app for All CPUs and have the .NET optimize the app locally? Will Crystal Reports (in VS 2008) run optimized for 64-bit and take advantage of the upper memory?

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  • How to use ocx in .Net windows application

    - by Anshuman Roy
    I have to use a ocx in .Net application. In the toolbox, i right clicked and from com tab added the ocx. Now the ocx appeared in the toolbox and added the control to the form. Whe i execute the application got this error 'Could not load file or assembly 'Interop.WINCMP3XLib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.'. Can you help me what else needs to be done. I also used the Aximp tool to convert the wrapper dll for the ocx. Now when I used this dll, i could not access the method in the dll. Please can anyone tell me the best way for using ocx in .Net application. Thanks

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  • Need Simple way to access XML in VB.Net - Pain with Linq-to-Xml

    - by aiart
    Dim myXDoc As XDocument = _ I want to access this in a simple way in VB.Net - Like: Dim Integer SizeXStr = CInt(MyZDoc.Cameras(1).Camera_Desc.@SizeX) ' where (1) is an index Why isn't this implemented in VB.Net? Better yet, type the values with a Schema and eliminate the conversion. Is this so hard? How do I access, in a simple way, data in XML - this would be VERY VERY useful! I have been using Query to try to get the values - when I use MsgBox() to display results, they display, but my main Windows Form is Trashed - changed colors, etc. The system has Bugs. Instead, I have to create an elaborate structure of arrays of objects and read the XML line-by-line and do the same for saving - this is the dark ages. Art

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  • .Net Xml Serialize - XSD Definition for Multiple Namespaces

    - by MattH
    The following XML was generated by serializing .Net objects: <?xml version="1.0" encoding="utf-8"?> <Request xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://EPS.WebServices/WebServiceSchema" > <Method xmlns="http://EPS.Library/RequestSchema">PackPlacementUpdate</Method> <Type xmlns="http://EPS.Library/RequestSchema">PackPlacementUpdate</Type> </Request> I am using XSD to generate a schema. However, (I think) because there are multiple namespaces two different schema files get generated. We will be providing the XSD file externally and I'm concerned that two files will cause confusion. Without changing the namespace of the .Net classes, is there is a way I can create a single XSD schema file and not two? Thanks.

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  • Client timeout when using WCF through Spring.net

    - by Khash
    I'm using WCF through Spring.net WCF integration link text This works relatively fine, however it seems that WCF and Spring get in each other's way when instantiating client channels. This means that only a single client channel is created for a service and therefore the clients get a timeout after the configured timeout is expired since the same client channel has been open since it was instantiated by Spring. To make the matters worst, once a channel goes to a fault state, it affect all users of that service since spring doesn't create a new channel for each user. Has anyone managed to use WCF and Spring.net work together without these issues?

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  • Registration-Free .net libraries with legacy VB6 applications

    - by Vidar
    I've been searching for hours for resources on how to successfully use registration free Com interop. I've found some resources on using old COM libraries in .net applications, but allmost nothing on using new .NET libraries in COM applications (more spcecific: VB6 applications) Basically my search gave two useful resources: http://msdn.microsoft.com/en-us/library/ms973915.aspx (Walkthrough by Steve Wight) There is allso the main MSDN article on the subject (No link because this is my first post, and I am only allowed one link) Is nobody else doing this, or am I the only one struggling to get my head around it? Any good reads will be very much appreciated

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  • Determining if a .NET type is dynamic (created using Reflection.Emit)

    - by Diego Mijelshon
    While the .NET 4 framework provides the Assembly.IsDynamic method, that's not the case with .NET 2.0/3.5. The use case is simple: for logging purposes, I want to determine the underlying type name of an entity that might be wrapped by a dynamic proxy without having any references to NHibernate or Castle (which know about the proxy) For example, I might have a CatProxYadaYada, but I'm interested in Cat. What's the easiest way to get that type? I was thinking of this skeleton: var type = obj.GetType(); while (IsProxy_Dynamic_Whatever(obj)) type = type.BaseType; return type;

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  • ASP.NET MVC 3 Arrived

    - by Shaun
    The Gu and the Haack had just announced the ASP.NET MVC 3 RTM had been released yesterday. You can download the intall file, release note and source code here. As the Gu said with the ASP.NET MVC 3 there are some other productions released as well NuGet IIS Express 7.5 SQL Server CE 4 Web Deploy & Web Farm Framework 2.0 Orchard 1.0 WebMatrix 1.0 The Orchard is a CMS and blogging system which build from ASP.NET MVC 3 with the new Razor view engine which can be found here and here.   Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

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  • My C#.NET application is running slower when the exe is located on the network

    - by leo
    Hi, My C#.NET application is running much slower when the exe is located on the network. And I'm talking about everything, even the graphical dispay is slower. For example: when a form is already loaded, if I unplug my network cable and minimize and maximize the window, it takes a very long time to redraw itself. I'm using framework .NET 3.5 SP1. Any idea on the cause? My hypothesis so far: I'm missing some options when building the app? my corporate antivirus checks more stuff because the exe is on the network the cache of Windows XP SP3 doesn't work the same way when the exe is on the network the server is a Novell server: maybe this does change something ? Thanks for your help! Leo

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