I need to create password access to a front end menu by calling a function so far all i have is the following:
Private Sub btnLogIn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogIn.Click
If txtPass.Text = "password".ToUpper Or txtPass.Text = "password".ToLower Then
[code].....
I am new to VB.Net. I am working on a project where I have to Start another applcation from web service.
I am able to start the new application(Eq.Notepad) from form of my project. But If I try to start the new applciation from web service then The application is running in processes. I am able to see the application in Task manager processes. I am not able to see the application in front end. I have tried ProcessStart, PSExecute , bat files running and their all parameters but nothing happened.
I am sure I am missing something but I dont know what exactly it is.
I am maintaining some VB .net code and noticed that they call a method with a period in front of it. What does that mean?
View 1 Repliesim in need of calling a function in another process, now from the last couple hours of digging ive found out that i need to use createremotethread for that, problem is - it has a bunch of parameters i dont know how to fill, especially the address part. I tried using getprocaccess and getmodulehandle for that but i dont think they return what i need.
View 9 Repliesi am trying to use a login form that is used to login after you select one of 7 forms. this login form calls a function that validates then it calls another function, if it's true, that will load the appropriate form.
here's what i have.
vb.net
'Here are the appropriate variables
Public FormName As Form
[Code].....
I have a module1.vb that contains a public sub, for example
Public Sub LogEvent(ByVal strIn As String)
Dim objLogFile As Object
objLogFile = frmEventLog.txtLog
[code].....
In my login form, there's a Forgot Password button. In the Forgot Password form, the user is asked to answer a secret question that he filled up upon registration, and if the answer is correct it will lead him to a Change Password form. My problem is, I don't know how to get then delete and then replace the password of a certain user. I attached some screen shots of my work.
View 1 RepliesI'm a newbie in vb. My first project is a grading system for a certain school. In my login form, there's a Forgot Password button. In the Forgot Password form, the user is asked to answer a secret question that he filled up upon registration, and if the answer is correct it will lead him to a Change Password form. My problem is, I don't know how to get then delete and then replace the password of a certain user
View 1 Replieshow I can call an existing Access 2007 report from VB.Net 2008. I need not only to call the report but would like to be able to apply some VB.Net code to the report.
View 2 RepliesHow do I get it so my program reads the database when its password protected? This is the code I have at the moment?.
Code:
myConn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;
Data Source=|DataDirectory|db1.mrk;"
I want to be able to have a textbox where user enters their username and password.It then will need to check the database and see if the username and password exist.If so take them to another form.[code]I have started the db connection and checking the database but am struggling with checking if they exist.
View 9 RepliesI'm currently working with a client's VB.Net code, which was developed for them by a small development shop a few years ago and which they purchased and have been maintaining and uprgrading since. This client's primary developer is out on indefinite (likely permanent) medical leave and I'm now filling in until they bring in a full timer (as I'm a contractor here). My current task is to add some functionality to a the VB.Net code they purchased. I'm finding practices and techniques in the code that absolutely baffle me and can't make the code do what I want. I'm starting to wonder if it's me and was hoping to get some thoughts on the code I've encountered.
For example: Setting a variable to accept the result of a function by calling the function with many parameters, clearing the parameters in the function, setting them to some value, calling another function with those new values, then never using the values returned by the functions. I'll add a code snippet in the first comment since this is already getting long.
I have a function where I am performing a lot number of database operations inside a Sub. The operation when called directly like:ExecProcess()
takes about 11 seconds to run.However, if I create a Delegate, and call the sub using BeginInvoke(), the very same process takes over 40 seconds to execute.Here's the threaded code:
Protected del As ProcessDelegate
Protected Delegate Sub ProcessDelegate()
del = New ProcessDelegate(AddressOf SELocal.ExecJob)
Dim cb As New AsyncCallback(AddressOf Me.ExecJobComplete)
del.BeginInvoke(cb, del)
Anyone know what may cause a function to take longer inside a new thread, rather than calling directly?
with .net 2008 exp + MySQL 5.0
my code is like this;
Dr_cug.Read()
cug = (Dr_cug.Item(0).ToString)
Dr_cug.Close()
error msg is; Invalid attempt to access a field before calling Read()
i have called the read here what's going wrong please
I created a database in Access 2010. I am thinking of creating a front end in Visual Basic and was wondering if anyone had any experience with this. Is it doable? Or should I save my time and use access's front edn?
View 2 RepliesI am having a problem with the BackOrdered Function of my program. I can`t get it to say anything but 0 when I run the program. Another problem I am having is the input box pops up like 6 times and it`s only suppose to once. [Code]
View 9 RepliesIn my project i'm using vb.net as front-end and access as back-end. in te project after enteringb the details to tha database i've to give bill to the customer. how can i design a bill? and how can i transfer the data from the page to bill?
View 2 RepliesBeen casually working on getting my users out of the DB completely. We use a vb.net app I created as a front-end but there are many reports that were built in Access and I want to give my users a way to open Access and run the report via my WinForms app.
Have gotten as far as being able to open an instance of Access and do what I need to do. Where I left off was running into a problem with not being able to tell if an instance of the msaccess.exe process is running and use it instead of opening another.
I'm using an MS Access database which has password (database password, not a workgroup or smth). I'm using 13 characters - with no special signs- only letters. When I try to open the DB from access it works fine, but when I try to run my Windows Form application from Visual Studio Connection String, I get a message that "Not a valid password".
[Code]...
I'm completing our assignment we are using vb.net as front end and ms access 2003 as back end but are unable to delete data in the database after clicking on delete button it shows result on front end.code for next does not work give code for next
View 2 RepliesI'm trying to populate an Access Data Table (5 columns) with a Visual Studio front end, but I'm not clear on how to pass the data through the parameters. I have created a connection, a data adapter, and a data set in the project by dragging them onto the form. I know the connection works because I can see my Access database using the Server Explorer. I have an INSERT command in the data adapter and the parameters are represented in this command with question marks. See my insert command below INSERT INTO tbl_ConstraintLogs (ConstrinatChangeReason, ConstraintTagName, ConstraintValueBefore, ConstraintValueAfter, onstraintTimeChange) VALUES The values that I want to pass to the database are coming from text boxes or they are program generated. For example: If I have a variable in my program called "AbcValue", how do I get the value of this variable into the database as the first parameter. I was trying to use the "Fill" command, but I'm at a loss here.
View 2 Repliesit is possible to code to a call another application and activate its "Tool" menu click.I am enclosing sample exe (this is the application that has to be called; and its "Tool" menu has to be acitivated, which fires a messagebox event")
View 39 RepliesI am creating a medical record system using MS Access 2007. the finish product will be used for a small healthcare which has only one available pc for now i ve done all required tables and some queries. What I really want to do is to design the forms where user can access information using VB 2010. I ve read tutorials online about how to connect dataabase to vb and successfully did that.
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I've got a basic logon form where if you enter the right password/username, it redirects you to the "MainMenu" Form How can I make a function called "checkLogon" that checks the username/password text to a variable in that function?
View 3 RepliesI am asked to write a front end program in VB 2005 (that will run in client computers which running on Win XP) to access an existing MySQL database running in Linux. It is not my preferred choice, but the user have the database and server working just as he wants it, and do not wish to change, at the same time I do not wish to change programming language. Is that even possible? Can we actually write VB 2005 programs that will run in client computers complete with NET framework 2.0 to access a Linux operating database?
View 4 RepliesI have used the PInvoke Signature Toolkit to create VB.NET function definitions for three fairly simple C functions contained in an external DLL. The problem is that two of the parameters are structures so pointers need to be sent and one structure (fileview) is undefined.
OpenFileView(filename, &fileview_ptr)
ReadFileInfo(fileview_ptr, &fileinfo_ptr)
The structure of fileinfo is defined so I can create a structure definition in VB.NET and create an IntPtr to that structure with Marshall.AllocHGlobal. And then I can use Marshall.StructureToPtr to copy the data and do the inverse when the data is returned.
[Code]...
I'm having some problems calling a C function from a DLL. The function is returning -101 which translates as a "bad parameter". The values I am passing have been returned from another, successful function call, so my current assumption is that I've built the structure incorrectly.The function definition is:
int sm_switch_channel_input(struct sm_switch_channel_parms *switchp)
Parameters
*switchp (a structure of the following type):
typedef struct sm_switch_channel_parms {
[code].....
in a DLL that takes a pointer to a structure as a parameter.The C and VB code is as follows.Am I passing the structure in calling the DLL correctly? I am asking because the API call returns a valid error code indicating error opening the com port specified. I tried all valid ports (com1 on a Vista 32 machine with a USB-Serial device and com1 defined in device mgr, com1 and com2 on a desktop with winxp and 2 real serial ports).I dont have the code for the DLL and cannot debug into the DLL code.
C code
typedef struct _SETUPPR {
CHAR Port[5];
[code].....
I'm sure this is a pretty simple question but I can't seem to find the answer on Google. Say I've got a function that does some stuff and returns a string. I can assign its return value to a variable:
Dim result As String = MyFunction()
But sometimes I want to perform the actions within the function but I don't care about the return value. I know I can simply call the function from code.
Sub Main()
' Code
MyFunction()
' More Code
End Sub
This works and does exactly what I need it to. My question is - are there any issues or pitfalls in doing this? Particularly I want to make sure I'm not introducing any performance or memory leak issues.
The function is something like this: "function recieveFindPlayerResponse(displayString)"Now, how can I call it. I was trying this:Call AxShockwaveFlash1.CallFunction("_root.recieveFindPlayerResponse(displayString)")And before I had this, I had a Call function which defines displayString. (Works, as I've tested it before, and no error is given to this.)Now, how can I call a function like the above?
And example of what the code looks like from ******* swf decompiler is:
function recieveFindPlayerResponse(displayString)
{
[code].....