Write Conditional Code To Provide The Access To Other Nine Users?
Jun 22, 2012
I would like to give permission to use this project to say, 10 users. The following code is fine for a single user. How can I write conditional code to provide the access to other nine users?
Submit button
If txtUsername.Text <> "Mahajan" Or txtPassword.Text <> "mh745" Then
MsgBox "Access Denied! Either Username or Password is incorrect!", vbOKOnly + vbCritical, "Security Login"
txtUsername.Text = ""
txtPassword.Text = ""
[code]....
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Jun 27, 2009
I am looking for a best practice to provide users of my ecommerce website with a breadcrumb trail. Current Site Setup:
[Code]...
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Mar 30, 2010
How can I provide an error message if the user does not provide a value in my textbox. I found this example, but it doesn't work in my
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_
As System.EventArgs) Handles Button1.Click
If TextBox1.Text = "" Then
[code]....
It says that Error Provider1 is not declared. How do I do this the right way?
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May 13, 2010
I'm writing a custom DAL (VB.NET) for an ordering system project. I'd like to explain how it is coded now, and receive some alternate ideas to make coding against the DAL easier/more readable. The DAL is part of an n-tier (not n-layer) application, where each tier is in it's own assembly/DLL.
The DAL consists of several classes that have specific behavior. For instance, there is an Order class that is responsible for retrieving and saving orders. Most of the classes have only two methods, a "Get" and a "Save," with multiple overloads for each. These classes are marked as Friend and are only visible to the DAL (which is in it's own assembly).
In most cases, the DAL returns what I will call a "Data Object." This object is a class that contains only data and validation, and is located in a common assembly that both the BLL and DAL can read.To provide public access to the DAL, I currently have a static (module) class that has many shared members. A simplified version looks something like this:
Public Class DAL
Private Sub New
End Sub
Public Shared Function GetOrder(OrderID as String) as OrderData
[code].....
This cleans it up a bit, but it leaves a lot of classes that only have references to other classes, which I don't like for some reason.Without resorting to passing DB specific instructions (like where clauses) from BLL to DAL, what is the best or most common practice for providing a single point of access for the DAL?
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Nov 6, 2009
What is the best way to provide strongly typed access to the session object? I am planning on turning on Option Strict, which is causing the compiler to complain about my lazy programming technique of directly accessing the session object:
Dim blah As Integer = Session("Blah")
My initial thought is to create a class that wraps the session and provides strongly typed properties for the information stored in the session. However, I cannot decide if the class should be a singleton, or instantiated on every use, or where the code should reside (i.e. within the web project or within a class library).
I'm leaning towards a singleton in my class library, but I don't know if that is the best solution, or if I am missing any other possibilities.
Proposed Solution:
Public Class SessionAccess
Public Shared Property Blah(ByVal session As HttpSessionState) As Integer
Get
[Code].....
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Nov 20, 2011
Does Microsoft provide the Up/Down Chevron Buttons displayed below, either through code or the actual images?
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Jan 28, 2011
So I'm writing the equality operator overload (Operator =())for a custom object, and the resulting mess of If conditionals is just an eyesore. But so far, it seems like the only sane way to check the values to as to match the specific behavior of this object.
The rules are:Num1 is required, period, and both the left and right operands and must be equal for True. Else, False.Num2 is optional, but if specified, must be present for both the left and right operands, and must be equal for True. Else, False.Num3 is optional, but can only be specified if Num2 is also present. Else, False.Num3, if specified, must be present for both the left and right operands, and must be equal for True. Else, False.
[Code]..
I also know that I could cache elements of the checks into booleans and then use those to reduce the amount of text. But that seems like a waste of cycles just for code readability. So I wanted to know if the SO community had better thoughts on reorganizing it, just in case I'm being too verbose with my checks.
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Mar 25, 2012
I am looking for some help in finding the best way to display a progress window for a module I am working on.I have a VB2008 app using an Access 2007 db. One of the MODULES in the Access db does a masterfile update and I want to show the user what is happening in process.
The VB2008 app calls the Access module to do all the work which is FAR FASTER than having VB2008 do all the work.The goal is to have a small window popup and display the progress. Once the process is done, close the window. How would you do this? Use a Access form? That works but it not clean looking at all. Is there something else that might work better?
Something like a msgbox that opens and can be updated while the process runs. Once the process is done, it can be closed. The user will not need to interact with this window - it's just to show the applications progress.
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Apr 6, 2008
I am looking for sample code that will allow me to read, write and edit records to a local MS Access DB using VB9.For my project, the datagrid and other controls are not an option.I have looked everywhere and cannot find any code examples.I assume it should be straight forward, but with all the changes in VB9 its tough.
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Jun 2, 2012
I have an email account. I need to write some code that looks for any new email message on it and in case there is, it saves the attachment in a particular destination.
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Jul 16, 2011
I have conditional code checking in a card game Im working on and it just feels wrong.I m looking for a better way.Right now, all my functions return a card. If I get a card Im usually done and can fall out of my nested structure.If I dont get a card I have to test a condition If card is nothing.And this condition gets repeated ad-nauseum.Here is a small sample of the code.
card = FindMaxTrump(playableCards)
If Not card Is Nothing Then
'If we found a trump at all[code]....
This might be a fine way to do it, but the constant check for a null card is what has me wondering if there is a better approach I'm missing.
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May 21, 2009
I'm working on an access database and there is a problem I can solve in a circumvented way but I was wondering if it can be done by using a function in query.The case: I have a main data table and 2 other tables joined to it.
maintable
country | city...... | postalcode [code].....
From one of the tables I select the respective zone for the postal codes in the main datatable, ie. if the row's postal code column contains 1000 (just an exmple) then the postal code is searched in the "zone" table "from" & "to" columns using "between", and it results in for example "zone1" (zone column). This is a clear thing, it works okay.However I need to select the respective rate column (based on the rows' weight column) from the rates table selecting the appropriate zone.
I can solve this by a switch statment (select country, city.... switch( zone="1", [1], zone="2", [2] etc.) but it gets very tedious when for example I have a rate table with 15 columns, you can imagine that.My question is if I could create a custom function which returned the respective column based on the result of the zone column.is there some way to get the function's return value to be translated in the select statement? for example select country, city....getzone("rates",[zone]) .....
I know that the rates table do not follow the relational database's main principle and it should look like fromkg | tokg | zone | rate and it would work like a charm with "where"but these tables are changed regularly and I receive them in excel...but maybe transforming the tables each time by unions would easily solve my problem doesnt it?I'm still interested if VBA custom function could be used for such a purpose.
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Apr 12, 2011
I am new to VB and I have two detail listviews with one full of items that can be droppedinto the other. I have three groups in Listview1 and I would like different forms to open up based on the group each dropped item belongs to. I was able to open Form2 on drop by adding Form2.Show() at the end of the ListView_DragDrop handler sub, but this opens forevery item and I want different forms to open depending on the ListViewGroup the item belongs to.I set the items and groups in the property windows and not in code; I do not know if this makes a difference. So here is the code I have on Form 1 where the listviews are:Public Class Form1
Private Sub ListView_ItemDrag(ByVal sender As Object, ByVal e As _
System.Windows.Forms.ItemDragEventArgs) Handles ListView1.ItemDrag, _
ListView2.ItemDrag
[code].....
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Apr 9, 2010
I am trying to write a protection procedure, which will allow me to create a licence key for our users. This licence key will ensure that the software can only run on the registered system, and will allow the user to access only specific areas of my program which is relevant to them.
I am thinking of using an RSA style approach to this where I want to be the only person who can create the registration keys. But I want to allow the program to be be able to decrypt the key. This is to prevent the average user from being able alter the key and remove any restrictions which are being imposed on the program by the license key.
The process that this would take is to produce a host id which has went through a series of tasks to distort the actual value from the user will return this code us, and from this host id I can then work out the original value of the code. Using these public and private keys I can then encrypt license key information.
However I would like to know how I would implement the private key encryption and key generation program in .NET, so that I can get this setup working in a manner which will allow me to generate keys and allow the program to decrypt keys.
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May 23, 2012
i have a notification j-query plugin .. i taste it in my page (working 100%)but when i want to use it in a event SqlDataSource1_Deleted with the response.write method it does not work
Protected Sub SqlDataSource1_Deleted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceStatusEventArgs) Handles SqlDataSource1.Deleted
Response.Write("<script type='text/javascript'> showNotification({message: 'This is a
[code].....
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Jun 2, 2011
In MS Access you can set the background to a specific colour when the field has the focus. This is done through "conditional formatting", using the "Field has Focus" feature. How is that done in VB.NET?
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Dec 11, 2009
I am trying to write VB Code that would allow me to access a users cookies from their PC. Is their any code snippits that any of
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Apr 13, 2010
Is it feasible to deploy a VB.NET windows forms application with a SQL Server back end where no users have direct access to SQL Server? The idea is that there is no way someone at the client site with admin capabilities could mess up the data definition, or directly alter data. I always assumed that somebody with the client should get admin capabilities, but perhaps not.
The application will have to have the capability of creating logins, doing backups, perhaps running scripts (encrypted?) For upgrades, and whatever else a user with elevated privileges would do. I guess the application would have a hard-coded account with admin privileges for this purpose. Is this a common way to deploy an application? The application uses SQL Server Express, which is installed with the application. The database will be installed with the application.
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Jan 12, 2012
Is it possible to set a variable in my custom class for Private Read/Write access and Public Readonly access without creating Properties with Get and Set? In other words, from within my class I want full access and from my form I only want read access. Right now I declare my variable as either Private or Public to control Public read/write access. I tried googling my question a bit but I'm not sure what the correct terms even ar
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Apr 22, 2010
I am using the code shown below to compare two Access databases with two fields each and write the results to a third Access database. I am getting an error at the "Do While DMReader02.Read = True" line: "Invalid attempt to call Read when reader is closed." Why would the reader be closed at this point if I am using different DataReaders in the two loops?
Imports System.Data.OleDb
Partial
Class Form1
[code]....
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Mar 23, 2012
Looking for some .net snippet on accessing what users are logged into a domain. I have looked through all the AD namespace and okay with that in getting static items. Specifically, NOT looking for current logged in user for a given machine(have that as well). Looking for a list of users that are currently signed into a Domain.Essentially, I want to pass a user (or list of users) to a method that will check to see if the user passed in, is currently logged into the network (AD).
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Feb 20, 2011
what is wrong with my code and I get no feedback from my button click event, i have imported. ( code Below) and i have tied differrent combinations of the code without sucess.maybe add extra to my code for the list to show open Port or closed ports.
Imports System.Management
Imports System.Management.ManagementObjectSearcher
Imports System.Management.ManagementNamedValueCollection[code].....
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Apr 30, 2012
I know my Question was asked maybe 10000 times before, but i really did not take the chance to search the forum coz i really short of time.
I have *.mdb DataBase with 20 tables each table have more than 10 fields, i'm trying to automate the MDB file from a network like that 5 PCS + One vb.net exe program (5 users) working on the same time on the exe that is connected to the database , my questions are :
1) How much risk is it to put the database into one (shared) folder and connect it to the program ?
2) What is the best way to establish this method ?
3) Is there any alternatives ?
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Nov 23, 2011
I'm trying to collect directories and add to TreeView. In Windows 7, there is a "Documents" folder under Libraries which is basically linked to "My Documents" under "Users". When I click "Documents" in the TreeView, I can get a list of all subdirectories by using
Dim dirs As String() = Directory.GetDirectories(strDir)
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Jun 21, 2010
i'm developing an application with vb.net and mysql. I want to add additional users to the application but with different access levels. this is my original code [code]If i add a third parameter named level to the sql statement, how do i determine which form shows???
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Feb 26, 2010
I'm trying to return from a webpage, the remote HKCUVolatileCLIENTNAMEHere's what I'm doing so far:
Get the Machine Name via DNS - this bit works great:
Public Shared FunctionGetMachineName(ByVal String
[code].....
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Apr 18, 2010
This program is going to submit GET data to our webpage. However, we don't want users accessing the webpage any other way than the program. We can prevent users from sharing the program using HWID authentication, but nothing prevents them from using a packet scanner to get the URL of the webpage. We thought about user-agent authentication, which we will implement, but user-agents can easily be spoofed.
how can we prevent users from accessing the webpage directly, instead of through the program?
Currently we will be implementing:
HWID Authentication to use the program User-Agent Authentication to access the web page Instant IP Blacklisting to anyone accessing the webpage without the proper User-Agent
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Jan 20, 2009
In my application, I create data and log folders that must be shared by all users using this computer. I did a lot of research, and I found a function that is supposed to grant full access to every users of a folder and its children. However if right-click properties on my folder, the access is unchanged. ow should I grant full access to all users of a folder and its children (I don't care who created it, all users should be able to read and write to that folder)?
Public Sub GrantAllAccess(ByVal Folder As String)
Try
Dim DomainUser As String = Environment.UserDomainName & "" & Environment.UserName
[code].....
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Jan 24, 2011
i am asking that can i use c# language to implement "actions" fired on "click side events" such as mouse over the reason for this stupid question is that i remember some syntax of registering functions for particular events of formview, which are call when the event occurs (yes there ispostback involved" is something like the above possible for client side events using c# or even vb.net
protected void Page_Load(object sender, EventArgs e)
{
Label3.Text = "this is label three";
[code]....
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Jun 6, 2009
I cannot find a way to make a program that I write make a shortcut in the start menu for all users.My final goal is to make an MSI and deploy it in group policy to all users on a computers OU. Is this possible?
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