Access Native Dll In Lightswitch Application?
Nov 15, 2011I'm trying to print a barcode using the following code in Lightswitch Application[code]...
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Override A Lightswitch Application Title?
Apr 20, 2011I'd like to insert the application version number into my Lightswitch application title bar, but I haven't found anyway to programatically set the application title.
View 2 Replies.Net Application Working Faster With Mono Then Under Native .Net
Mar 21, 2011To do some testing with MPIR, GMP, the .Net Bigint module and other math libraries I've recently written a small program which allows me to create random sequences of numbers with a certain amount of precision: Always this amount of digits in front and behind the comma, no starting/ending zeroes. While it might not be the most elegant of code, it really blew my mind when I found out my application was running up to 10 times faster with Mono under Ubuntu 10.10.While the code is not elegant and in Basic, it was developed by me in about an hour's work and it serves the purpose: To generate dependable huge datasets consisting solely of preconfigured numbers before or after the comma. To get a general idea the UI's posted here:[code]Eliminating IO by not writing to IO but just to a List instead Eliminating an "if" path which checks if the random before/after float character is checked.Disabled progress reporting in general which causes the backgroundworker to not report any progress.Play around with the amount of symbols, theres very little difference between just getting 1 random character or getting 15 per record.I'm at a loss to what causes my program to run so slow under Windows/.Net compared to Ubuntu/Mono. I'm only a "half programmer", which means: I'm a Bussiness and ICT student who mainly focusses on human ICT, and the Microsoft Platforms certainly have lead on that, however such a huge performance hit compared to Linux for this soul and simple program really gives me a cold chill when it comes to my favourite platform.
View 3 RepliesMaking A NET WinForms Form A Child Of A Native Application
Nov 9, 2010I have a NET (version 3.5) Class Library written in VBNET 2008 (on Windows 7 x64) that will at times display a WinForm. The class lib will be used in Excel, and I want to set the NET WinForm to be a child of the Excel Application window. If I weren't using NET, I would just call the SetParent API function, but I can't seem to get this to work since WinForms (I assume) don't have a HWnd suitable for SetParent. I'm sure this is possible, but I just can't find the right properties and methods. The WinForm will be shown modelessly so the user can switch back and forth between Excel and the displayed WinForm.
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Translate Application Text To Some Native Languages With My Program?
Dec 9, 2009I want to translate those application text to some native languages with my program.
View 2 RepliesChange The Native Scrollbar Style In Application To Custom Style?
Mar 23, 2011how i can change the native scrollbar style in my application to my custom style. I can adopt a custom scrollbar to attain this purpose but this will not serve my purpose because i want this attribute in entire application. Like it the text in textbox gets longer than its bounds than the scrollbar appers are my custom bar not the formal ones
View 12 RepliesC# - Lightswitch Cannot Fill Form?
Feb 24, 2011I followed tutorial here[URL]..The form runs but I cannot fill it Update: There's no error message I just can't enter the field to type anything: it's read-only
Update 2: I ask the gurus on Microsoft Forum, they tried to answer hard, nobody can find out why. Seems beta is very beta Weirdly I did have this problem on a windows 7 PC not on a Windows 2008 pc
.net - LightSwitch: On New Row, Pull In Parent Info?
Aug 12, 2011I have a database with two tables in it: People and Logs.I have created a Details page that displays Person information and additionally includes the associated logs records. All of this has just been done by adding a standard details page - not custom coding, etc.When a user clicks on the green + to add a row to the Logs for that person I want to autopopulate a few of the columns. To do this I've opened the Log class and added the following:
Private Sub Log_Created()
Me.Create_Date = Date.Now
End Sub
This works great. But I also want to pull in the card number associated with the person. In the end my code should look something like (pseudo):
Private Sub Log_Created()
Me.Create_Date = Date.Now
Me.CardNumber = SelectedPerson.CardNumber
End Sub
However, I'm not sure exactly how to accomplish this in code?
Lightswitch Program Runs On One Machine But Not Other
Nov 10, 2011I loaded a Lightswitch program on an XP machine and after load all of the updates it runs fine. I tried to load it on another XP machine with all of the updates loaded and it looks like it installs and it shows up under programs but it looks like it starts to run but then nothing happens, there are no new processes running.
View 1 RepliesLightswitch Unable To Load Data?
Dec 22, 2011I have a Lightswitch application that is running fine, connects to the database and shows the data just fine. I am trying to write another one using the same database but I get the error "Unable to load data". I can't find anything I've done differently with this application. I can connect to the database in the development window and see the data by using the View/Server Explorer and show table data.
View 3 RepliesC# - Allow Detail Screen To Add New Record In LightSwitch 2011?
Oct 13, 2011I have Customer search screen and Customer Detail Screen, On Search set up a ShowLink on Name ,so when ever a user click on Name the Detail Screen Opens with that Customer data.
Whenever i change something into Detail Screen and press save, it Updates the customer. Its Fine.
But i want provide a functionlity of AddNew Record for that customer, So i have put a Button "AddNew" on ScreenCommandBar that clears all the fields in the Detail Screen. But it still Updates the Customer..
How can i code for add new record in Detail Screen?
Link A PDF Document To A Record Using Visual Studio LightSwitch 2011?
Sep 14, 2010I'm Stuck the following problem: How can I link a PDF Document to a Record in a Data Grid using Visual Studio LightSwitch 2011 and Visual Basic?
View 1 RepliesAdding Custome Validation Message At Screen Side In LightSwitch 2011
Oct 12, 2011I have small lightswitch application having CreateNewUser Screen.Screen fields comes from Datatable added in DataSource, I have made all Validattion of fields at DataSource side.However i have added one Custom Control in the screen named : Re-TypePassword.Whenever user click on save button I want to match the Password and Re-TypePassword and want to prompt user a validation message if Password and Re-TypePassword are different.how can i display that validation massage ? ( I mean i want to add validation message to Summary of messages that appears at the top of screen)
View 1 RepliesRunning Access - Application That Has An Ms Access 2007 DataBase Which Runns Great If Access Is Installed
Oct 15, 2011I have an application that has an Ms Access 2007 DataBase which runns great if access is installed. Is there any code that I can use in vb that I would be able to run access with out installing it.
View 5 RepliesCom Dll Vs Native Dll Vs Managed Dll?
May 3, 2010What's the advantages of the above types of dll? Is there any other type?
View 1 RepliesCreate A Native Dll Using .net?
May 3, 2010What's native code? And native dll?
Can i create a native dll using vb.net?
Project Using VB And A Database In Access - Check If My Application Requires Access To Be Installed Or Not?
Feb 16, 2012I'm using VS 2010, and I did a project using VB and a database in Access. The problem is that when I try to put that "application" on other computers, sometimes, is not working. I thought it can be because on these computers they don't have access, but on one computer, is running another app which is using Access and there is no Access installed. How can I check if my application requires Access to be installed or not?
Here is a example of how I did the connection:
Public AccessOLEDBConnString= "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & myfullpath & ";Jet OLEDB:Database Password=password"
Function getConnection() As OleDb.OleDbConnection
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And when I want to have access at the data I'm doing like this:
dim conn as Oledb.OledbConnection
dim sql as string
dim ds as Dataset
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.NET Native GUID Conversion
Nov 9, 2011I have an external database that is feeding information to me. One saves their data as native GUID format and my other data source supplies standard .NET GUID format string. Is there a tidy way to convert from Native GUID to GUID Structure? Also is there any validation bit to determine if a provided value is a Native GUID or not? I can't seem to find any if there is one. The difference is as follows:
typedef struct _GUID
{
DWORD Data1;
WORD Data2;
WORD Data3;
BYTE Data4[8];
} GUID;
Data1, Data2 and Data3 get their byte order reversed but Data4 remains the same, see [url] for more info.
Calling VB6 Native Dll From .net Project?
Jan 12, 2012I have a vb6 project in which I use a dll library to do some tasks. For that, I add a module which declares all functions of that library such as:Declare Function myFunction Lib "abcdapi.dll" (ByVal hVar1 As Long, ByVal hVar2 As Long) As Long When I call this function (and many other similar) I'm able to do the work and correct Long pointer is returned. But when I try to do the same thing by VB.net (by importing the same library using dllimport and calling the same function), I get no result. although it does return some pointer but that doesn't produce correct result.
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Convert A .NET Service To Native?
Aug 20, 2009I need to convert a windows service written in .NET into native code, independent of the .NET framework. I've looked into using NGen to do this, but couldn't figure out how to use it. Essentially, I would like to take my windows service, run it through *insert app here* and have it bundle together all of the dependent dlls from the framework into their native code equivalents, so the service is installable without the framework.
View 13 RepliesDetect SQL Native Client?
Mar 5, 2009I'm using VB.Net 2008, and I'm having difficulty finding information on how to detect the presence of the SQL Native Client components. I would like to detect their presence on a computer, and then find the version of the components.Does anyone have any information?
View 4 RepliesDifference Between Native Api And Normal Api
Jul 20, 2010i want to use some api's in my software . Other than api there is no other way .
I want to learn more about win32 api . Can some one tell me
And what is the difference between Native api and normal api
DotNET Native Can Use Instead Of One Of These COM Libraries?
Nov 1, 2010I'm looking at a small remoting project in VB.NET. Initial research turns up references to msrdp.ocx which my Windows 7 Ult system doesn't have; a filesystem search on the same platform turns up MsRdpWebAccess.dll which doesn't appear to be well documented; finally hunting through COM references in Visual Studio turns up rdpencom.dll labeled "rdpcomapi 1.0 Type Library" which seems to be best documented via personal developer blogs (which isn't encouraging but is a lot better than other options).
My goal is a lightweight remoting application I can deploy to Windows 2000 Client/Server, WinXP x86/x64, Win2k3 Server, Vista x86/64, and Win2k8 Server.Is there anything DotNET Native I can use instead of one of these COM libraries? Is one of these COM libraries better for the job overall than others; and then am I going to have platform-specific compatibility issues if I don't provide support for more than 1 of them in my app?
Connect To Postgres With Native Provider
Apr 15, 2011I'm writting an application that needs to connect to a postgres 9 database. I'd rather not use any 3rd party drivers like NPgsql and the like. I'd like a driver that comes with the visual studio.I tried to create a data connection from the IDE with .NET framework provider for Ole DB and the provider was "microsoft jet 4.0 OLE DB Provider" and it didn't work.
View 5 RepliesGet PNG Image From Native Win32 Resource In NET?
Sep 16, 2011A DLL file contains some images inside PNG resource type.
I can view the PNG images in softwares like Resource Hacker, Anolis Resourcer & Resource Tuner. Check this screenshot of Anolis Resourcer for more details:
how do I get the PNG image no. 5220 from the DLL file and put it inside a PictureBox? I don't think APIs like LoadImage or LoadBitmap will work.
Setting The Attributes For Native Structures?
Sep 5, 2010In a previous post [URL].. I needed to change how the values of an object's properties were displayed. In my case, I wanted to change how the native System.Drawing.PointF structure was displayed. If you check the post, it was resolved by using a TypeConverter.Now, my next question is how do I give existing properties attributes? For example, the System.Drawing.PointF structure has three properties: X, Y, and IsEmpty. I would like to give the X and Y properties descriptions. Also, I would like to hide the IsEmpty property, i.e., Browsable(False).
View 3 RepliesVS 2008 : Native Sql Data Types?
Jun 2, 2011I'm creating a VB.Net Windows Form Application. Apologies if this is not clear as I'm still new to .Net. This consists of a text box and a gridview.The user is able to write SQL code in the textbox, click run and see the results in the gridview.It uses a SQL DataAdapter and the fill method to a datatable to populate the gridview.My problem is that I need to know the SQL datatypes for each column in the data table (NOT the .net ones). I.E SQL Server 2008 data type 'Date' is stored as System.Datetime in the datatable. I need to know if the SQL Server datatype is 'Date' or 'Datetime'.
View 2 Replies[2008] Generate Wrapper For A Native DLL
Feb 18, 2009I have a file called CalcProg.DLL written in Delphi which is used in Plaxis. I am planning to write a VB.net wrapper for this DLL. The problem is that I don't know what function names there are in the DLL. I was wondering if there was a wrapper generator so I could input a DLL and the generator generates a dummy CalcProg.vb with the function names so I could have a VB class that does something like this:
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C - ExecutionEngineException Thrown When Calling Native Code
Oct 17, 2010I have a function that is exported by a C library with the following signature:
extern "C" BOOL Func()
The function is declared in VB.NET code like this:
<DllImport("mylib.dll", CallingConvention:=CallingConvention.Cdecl)>
Private Shared Function Func() As Boolean
End Function
The problem is that I get an ExecutionEngineException when I call the function from .NET code.
Given that BOOL is typedef'd as int in this C code, should the declaration be different? If so, how should I be declaring this? As Short or Int32? Do I need to marshal the return value?
C# Implement Late Binding For Native Code
Aug 14, 2009We are working with an existing native application (most likely written in VB) that loads assemblies and calls methods with "Late Binding." We do NOT have access to its source code. We want to implement this interface in C#, and have the native application call our C# assembly. Is this anything we have to do beyond matching the method names and method signatures to make it work?
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