so, i am writing a program in VB.net that will access a usb fm radio device using a dll. the dll is written in c++. when i call the function to get the current station in the dll:
USBRADIO_API long __stdcall GetCurrStation ()
{
RDSData rds_data;
[code].....
I Am a new developer in VS 2008. I am writing a small program that reads an XML file. Here is a snipet of code.
filename =
"XMLPolicyList.xml"
Dim DR As XmlTextReader = Nothing
[code]....
My understaning is that the system looks for the file in the bin/debug folder, so that is where I put it. But when executing this program. I always get a FileNotFoundException. The file name displayed is (filename). If I hard code the entire directory name and file name I get the same error and the file name is displayed with the same slash in front of it. For instance I put the file on the C drive and the error displayed C:(filename).I don't have the problem in older versions of Visual Studio. The same program runs fine in VS 2003. I'm thinking that there must be some sort of setting within VS 2008, but I have been unable to find it.
I'm having a problem with accessing the OleDB in VB 2008. It comes up with this error: "Could not load file or assembly 'System.EnterpriseServices.Wrapper.dll' or one of its dependencies. The check of the module's hash failed." All my other projects used to work fine, now none of the projects work and it comes bumping when trying to connect through oledb.
View 5 RepliesI am pulling up HTML using System.Net.WebClient, and I return it as a string.
Now I want to take that string and somehow parse it using the DOM.
Problem is I cant find a solution. So far I have tried both HtmlDocument and Xml.XmlDocument.... At this rate maybe I should of just wrote this program in Greasemonkey with AJAX
For some annoying reason you can actually create directories with full stops in them... and Microsoft just so happened to of set the default path for one of the Exchange server log files to go into a folder named Server.log. Yes it is definitley a folder not a file, there are .log files within the folder too though.
So, I'm trying to parse some of these tab delimited log files but I cant actually get at them because whenever I try and access the Server.log directory my code just dies. I mean, it doesnt throw an exception, it just stops executing. The form is still responsive etc but the parsing routing doesnt do anything and if i step into the code i see that it gets to the line that tries to access the server.log directory and then it just jumps straight out of debug mode.
If i move one of the log files out of the Server.log directory then my code works fine so what can I do?I tried using IO.Path.Combine but that doesnt work either (and for once I'm not saying "it doesnt work" and giving you no error details because im useless, its just because there are no error details!)
I want to create and populate populste several databases on my server MySQL. I pretty much know how to handle the data and queries once I have a connection, it is connecting that I don't know how to do. I have read all the help file I can find till I am sick of reading about "Northwind" which doesn't help me a t all. What I need are the three or four lines that establish a connection to MySQL at [URL] I need to be able to establish this connection transparent to the user who needs only to put thier user name and password for the site into a configuration file. Then I need to be able to create a database and give the user access with thier username and password. I know how to create the database but not how to set the username, password and permission.
View 9 RepliesI have been using GreaseMonkey for Firefox for about a year now and I find it wonderful, but I am really prefer using VB over JS and I would like to do some stuff that is on my computer along, not on the internet.I wrote some script for GM that read the contents of an iframe, and GM allows you to "include" which addresses the script runs on. This is really nice because it keeps the script from running where you don't want it to, AND it allows cross-domain support for communication between dom elements (in a round-about way).
I want to get away from using GM because I like some of the stuff I have already done in VB over the last 10 years and dont want to rewrite it all. So really I want to go back to my old stuff and learn how to get this functionality from VS2008.What I am specifically looking for is HOW in the world does GM listen for the creation on the window objects and run some script on it when it is finished?
Lets say I have a few webbrowser objects or other non-active xml, html or dom objects in my project. I want to retrieve info with one, send info with another, and display info with the actual webbrowser object.It sounds weird and I bet it could be used maliciously, but I mean no harm. Like I said, Ive been doing it for a year in GM already. I know .net really tries to prevent this kind of stuff cross-domain, but I figure if GM can do it, anybody can. The question is just how.
I understand how to access dom elements and all that, and I have some skill listening for events. I am just a little lost on how to combine the two in this situation. Grabbing an iframe is simple, and I realize I cant (shouldnt be able to) read it when I am acting in the parent object's domain. How do I sequester the iframe window away from its parent object once its loaded, or at the point before it loads its content so I can read it or more specifically add an event listener so I know when its finished loading? This seems super simple, my brain must just be addled.
I want to listen for the creation of the iframe from the project level, and I want to be informed of the document load from project level. I dont want to listen or do anything from the parent window object, so I really want the iframe sequestered as much as possible. Assume all iframes I will be dealing with are not of the same domain as the parent object.
I've just started learning Visual Basic 2008 and I am stuck with accessing a database through VB, I am using the Data Source Configuration Wizard. Everything goes fine until I start debugging, there is no information in any of the fields. However if I use a different computer in the house I can look at different records.
[Code]...
Basically I am creating a Windows Service as an 'updater' program to update all my software packages. Whats going to happen is every piece of my software that is installed in its program folder will have an Update.dll this DLL will be a library to do with the update of the software.
There will also be a database in the Updater program folder which will contain a list of all my installed software. So when the service starts it will open my 'database' which will load the paths to all my installed software to a string array. Each path in the string array will have a Update.dll in the folder.
What I need to do then is is in turn call a routine called StartUpdate() from each of those Update.dll which will then do all the work. So the service itself is fairly basic and doesn't really do much I just need to figure out how to access DLL's when I don't actually know what ones will be there while programming, Reason I am doing it this way is to support my future software programmes without having to update the updater.
I�m having trouble accessing a flexgrid from a different thread.Basically in my main mdiParent I have some code like this, this code is triddered when the aplication receives a message from a remote client
Public Delegate Sub UpdateActionsGridStatusDelegate()
Me.Invoke(New UpdateActionsGridStatusDelegate(AddressOf frmActions.UpdateActionsGridStatus))
I also have a form called frmActions, which contains the function �UpdateActionsGridStatus�
Public Sub UpdateActionsGridStatus()
MsgBox("Actions row cnt = " & Me.flxActions.Rows.Count - 1)
End sub
If I run it from a button on the flxActions form it works fine.When I run this function from a thread it returns 0 rows!
I'm my original post here and the code in post #1HTML why doesn't this work? i get an error on the underlined section.
View 7 RepliesI did some research (mainly in the Drawing namespace) about animated GIF files and I know you can see how many frames are in the specified GIF using the GetFrameCount method, however how I can access each frame directly/loop through them one by one. This is my first time trying anything like this and I can't seem to find the right methods, classes or information. I'm not even sure if this is possible using the .NET framework.
[Code]...
I was wondering if there is any way to manipulate layers of a psd from within a VB program. I would Ideally like to inserts just the psd file in and then once a command is clicked turn one of the layers on or off.
I know I can accomplish this inserting a jpg/gif for each layer and have that image be turned on or off by a button click, but I figured using the psd would save room and if something needs to be aligned differently I can just make a change in photoshop. Opposed to trying to realign the coordinates in VB
In this program i am making, i want to get information from a text file. but i need to get it from 2 different subs. one sub loops and gets the information every loop and other gets it when a user clicks a button. when they get it at the same time, i get an error saying that it is already being used by another process.
View 7 RepliesI have added a txt file to my project, how to access it.
This is what I thought it would be, but it is not correct,
Dim reader As StreamReader = New StreamReader(Me.Airports.Txt)
I am trying to create an app that adds tabpages into a tabcontrol which has a several controls on each tabpages. However how do I access those controls?lets say the controls I add are named label1 and label2. the tabpage is named infoTab1.
If I do inftoTab.infoTab1.label1.Text = "some text" I get an error saying infoTab is not a member of 'system.windows.forms.tabcontrols' cause in design time it isn't added yet.So how is this actually done? am I on the right track?Any tutorials are more then welcome, tried google but only get basic concept stuff comes out it or trying the wrong keywords.
I am having some trouble accessing the data in a listview. The data in my listview is popluated from the database which works fine. What I want is the user to be able to click on the entry in the listview and it show them a messagebox with all the data from the listview. I have 1 main item and 2 subitems in the listview.
View 5 RepliesI have a structure which includes this...
Structure MasterStruct
<VBFixedArray(98)>
End Structure
When I create the code to initialize the Sections array like this...
Dim MasterX as MasterStruct
Dim Temp as Integer
For Temp = 0 To 98
MasterX.Sections(Temp) = 0
Next
VS 2008 tells me that MasterX.Sections "is not an array or method, and cannot have an argument list."
I developed a project in VB.NET..In this project I want to use data from MySQL that is resides in my WEB Server.I can communicate with the MySQL server of my localhost but can not communicate with the WEB Server.In my CPanel I added Host from the Remote Database Access..But I can't communicate with WEB MySQL Server.
View 2 RepliesI am trying to access objects created at run time.The following code works IF Options Strict is off. If it is on it indicates "Option Strict On disallows implicit conversions from 'System.Windows.Forms.Control' to 'System.Windows.Forms.TextBox'."
Option Strict Off
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim txt As TextBox = Me.Controls("T3")
[code]....
I am having trouble formulating the type conversion.A Second problem I am having occurs when I create a groupbox at runtime and then add the textboxes to the groupbox. I am having trouble drilling down to gain access to the textboxes inside the groupbox.
I am trying to access controls that were added to the form and created code all before I added them to a panel. Upon form loading I create the form handle into a dictionary. then I call that dictionary ID and add data to the controls. I can't seem to add data to the controls inside the panel.. I think it is something simple. I may just be over looking the method I need to call.
View 11 RepliesIn my program (PassGen) i have a DataGridView control that stores passwords.But when i add more about 20,000 or more entries at the same time (using "Generate List", UI freezes up for a few minutes.I tried to add new entries from a background thread (so main thread will redraw the form), but run into exceptions How to do that?
View 1 RepliesFor school and other reasons, i am making an application in which the user can draw tile based backgrounds, to then turn into long line of code , i think called CSV , which can then be used in programs such as flash, to draw a tile based background. I am currently making a flash game, and dont really like the other tile array making programs out there.
For instance, code such as [1,0,1],[0,1,0],[1,0,1] with the correct code would generate a 3x3 tile background with an X shape.Anyway, at the moment i am currently stuck.I have code up and running which generates a 2 dimensional background out of pictureboxes randomly, however thats as far as i got, i dont know how to access the pictureboxes created.
What i have right now is two variables, gridX and gridY, which determine the amount of tiles placed in a for loop. These variables would be used to determine the size of multidimensional arrays that store the tile data, and determine the map size.i intended each image to be clickable, so that its picture would change from black to white when clicked
When clicked, the tile would switch between two images, to represent two different tiles. at the same time, a value in an array created with the tile, would change from 1 to 0.Then when its time to make the code, i simply use a for loop to spit out the array in the way i want.
I understand that i could perhaps create a class for the pictureboxes, but i dont know how to, since ive never dealt with them, and i dont understand any of the guides and tuts.how to use a class so that i could add and change the properties of multiple dynamically created pictureboxes, but also change the value of an array created with the picturebox, when clicked?
i need all of this to be done however without adding or including any additional libraries or anything to visual basic as it will be graded on school computers.
When I try to access the controls of a form which is not yet created (i.e. to modify the contents of a text box , to press a button etc) , I fail , usually without even an error message . I found out that the only way to make my program go right is to take care that the form is first created before I try to access anything on that form . However this means I must use the Show method to create it and then to Hide it , which leads to an instant awful optical effect . I remember back in VB6 there wasn't such a problem ; it seems that in VB6 each time I accessed a control on a not-created form led to the form being created silently . Is there any way I could do that in .NET too in order to access my precious controls ?
View 15 RepliesI need to access a file path, but a part of the path is different on each PC. Mozilla creates a random profile name for each PC it is installed on. I can get most of the path through environment variables. I need to access the files inside of the default profile, but can't since I'm not sure how to access it.
Here's an example of the file path:
'C:Users\%USERPROFILE%AppDataRoamingMozillaFirefoxProfilesxxxxxxxx.default'
The only thing that stays the same with the profile name, is the '.default' part.
I have a camera for which the complete source code with header files(.h) and all libraries files(.lib) are given in VC++. Now if I want to access the function calls in the header files and in turn the functions in the library from VB.NET, I am required to write a wrapper DLL for accessing the function calls which I never did till now.
View 1 RepliesI have a Public Sub I am using to enumerate running processes and then display them in a ListView.I want to be able to update the list automatically each second. I've thought of doing this in two different ways, but the method that I want to use is checking if the process has exited or not.
When reading up on the Process Properties, I ran into .HasExited and .Refresh.I thought that I could use a timer and have it tick at 1 second intervals. I would then check, each second, if the Process has exited. If it has, remove it from the list.The problem with this, is that I don't want to put the sub in the timer because it would just constantly flicker the control. I need to figure out a way to access the variables inside of the Sub while inside of the Timer's .Tick event.The other issue is being able to add processes that aren't there. Which I can within another sub. I was thinking I could create a sub that grabbed the Processes by ID, compare them to the list, and them add them if they aren't there. If I did this, I could also remove Processes by ID that aren't in the list.
how to handle movement of buttons that are made in runtime. What my program does is writes the name of a button that is made in runtime, the left, and top cordinate into a textfile. When the user reopens the program it needs to load the button in the same spot. So far i have a streamreader reading the file in each line. There is a one sentence split by ",". Each of the three components are loaded into an array. how can i call the buttons it i am unsure of the name. Possible answer could include using sender, addhandler.
Private Sub LoadBuildingToolStripMenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LoadBuildingToolStripMenuItem1.Click
Dim File As OpenFileDialog = New OpenFileDialog
[Code].....
I have a form with Check Boxes on it and a second form that holds functions and a Backgroundworker.When a button is pressed on the first form, the second form loads and then runs the functions that relate to the appropriate Check Boxes.Doing it this way causes the second form to become inaccessible. I decided to run my code in the Backgroundworker's DoWork event and then call the RunWorkerAsync method in my form's Activated event. Before using the Backgroundworker, everything worked fine and now it doesn't.I assume the issue is with the Backgroundworker not being able to access controls on another thread.In debug mode,it automatically throws an exception, but doesn't error out when using the Release version, making me assume it's a legal call. But, if it's a legal call, then why can't I access the controls?
View 10 RepliesHow to use Folder Monitor (or something else) to get the username along with folder activity?
View 1 Replies