How To Verify IP Address From Textbox
Apr 11, 2010How would you verify if an IP address resolves to a computer name correctly from a textbox?
View 6 RepliesHow would you verify if an IP address resolves to a computer name correctly from a textbox?
View 6 RepliesI know you can use regex to verify an email address format, but is there a way to, outside of sending an email to the address to verify that an email address is actually a working email address?
View 4 RepliesI would like to know if there is any way that you can verify that a email address actually exists like using this tool: [URL]. would like to wirte an application that does this in visual basics.
View 6 RepliesThere is a situation that I couldnt handle, I have 4 TextBox's and I am assigning the text to variable after loosing focus for 4 TextBox's as below;
(Variables assigned under class Form1)
Private Sub TextBox1_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.LostFocus
[code]....
I'm looking for regex to verify a correct domain has been entered into a textbox, it must have http:// conditional www. also must verfiy it has a TLD but must except TLD in this format to: .com.au, co.uk etc etc
Example of the regex i would like to outcome is [URL] or [URL] no trailing text like index.php
How would you verify a textbox if contains at least one numeric digit and one alpha character using loop?
View 3 RepliesI have a lot of textboxes on my form in VB. I want to create an array, keeping the address (pointer) to each textbox.
i.e.
Private
Sub
WriteTxt(ByRef[code].....
Instead of testing x i want to use my arry with the pointer, to read and write to the textbox.
I'm adding an email facility to my VS2008 (VB) project. I have the form and most of the code in place but am unsure about adding the detail to the textboxes. My data will come from an Sql datatable via a Stored Procedure. What I would like to do is use the autocomplete property of the recipients textbox so as to show the Display Name and the Email Address as is done in Outlook. Like John Smith <jsmith@*****>
View 2 RepliesI have a text box and I would like to type in a website address and make it go to the given website by clicking a button..I already created a button and a text box. How to go to the entered website address.
View 3 RepliesAny code that sends "MaskedTextBox1" and "MaskedTextBox2" to my email adress when clicking on "Button1"?
View 4 RepliesI would like to know if there is a simple way to validate an e-mail address? I have seen many ways that appear to use functions but I would like to use something simple because currently my error control is done like this:
If txtEmail.Text = "" Then
ErrorProvider1.SetError(txtEmail, "You must enter your e-mail address.")
Else
ErrorProvider1.SetError(txtEmail, "")
Is there a way to use the same type of syntax but instead of checking if the textbox is empty, check if it a valid e-mail address? I know the regular expressions can be used, but how in this circumstance?
I would like to know is this possible.I have a simple form in vb2008 with a button and textbox when i press the button i would like textbox to display my default router ip address.
View 14 RepliesI was wondering how i would be able to validate a textbox for the E-MAIL address of a person. For example it cant have anything like "`#[]-=+->~| etc. it MUST have an @ and a .com or .co.uk at the end of the e-mail. anyway i was wondering how i would be able to program this when the user types into the textbox they cant put in any of the other symbols?and IF there is a missing @ or .com then the user should receive an error message telling them to make sure that they put them in.how would i program that on a button?
View 1 RepliesUsing this
TxtBox = New TextBox()
With TxtBox
.Name = "T" & reader("area").ToString
.Visible = True
[code]....
The name would come out like "T3" Now I want to put a value into that textbox.How can I address the correct Textbox?
In html it's easy to get a button to get an file on your local hard drive but I can't seem to find or remember how to do it for a VB application (using Visual Basic 2010). What I would like is for the button to find a local directory, select it and then add the address to a textbox.
View 1 RepliesI work for a printshop that screenprints customized hats ,tees and a host of other stuff for a variety of small businesses. Being that we are a small business as well, we can't afford to mass ship catalogs to our clients, so I decided to build a catalog application/business card that can be emailed to them. The app is rep. specific, and after choosing which options suit them best using text fields and combo boxes, upon clicking submit, the customers' info is emailed to the rep.
To do this, I am trying to get a popup window that displays an email form with the 'mailto' address previously set, so it can't be altered and the info from the previous screen to be pasted in the body of the email. Upon clicking the confirm button, the mail is sent and the window is closed. I already have the code to copy the info from the textbox and combobox entries and paste it into the textbox in the next form, but getting the email form to be functional is appearing to be quite a feet.
I have to create a block of code that detects the Local IP address of connected adapter and returns it as string to a TextBox.
View 7 RepliesAre there any IP Address filters or masks available in Windows Forms as per following screenshot? A backslash shouldn't be allowed or it should be filtered somehow.
View 1 RepliesSocketException was Unhandled: Only one usage of each socket address (protocol/network address/port) is normally permitted I get this error every time i click collect a second time.
[Code]...
Can anyone point me to some code which can help obtain the network address from the host IP and subnet mask?
View 3 RepliesI made web browser which consist address bar that I use it to type addressess in it i.ewhen I type [URL] it opens [URL] but when I go to anther page in google it doesnot show it's link in address bar lix InterntExplorer or other international browsers so how to show any link or any sub page's link in my browser address bar ?
View 1 RepliesI'm trying to use the DHCP API (using the references on pinvoke.net) to retrieve a computer's MAC address when given the IP address but I can't get the code to work. I've run all the C# code on pinvoke.net through the C#-to-VB converter but I'm stuck now.
Here's what I have so far. The value of res is always 5 (should be 0). Thing is, I can't find any documentation on what the return codes mean
vb
Private Sub GetMACDim client As String = "1.1.1.1" Dim server As String = "0.0.0.0" Dim si As New NativeMethods.DHCP_SEARCH_INFO si.SearchType = NativeMethods.DHCP_SEARCH_INFO_TYPE.DhcpClientIpAddress si.ClientIpAddress = Convert.ToUInt32(StringIPAddressToUint32(client)) Dim res As UInteger Dim oInfo As IntPtr
[code]....
' Use Your work Group WinNT://&&&&(Work Group Name) Dim DomainEntry As New DirectoryEntry("WinNT://Wokgroup") DomainEntry.Children.SchemaFilte
[code].....
I have to make a basic program that: Create a program with a simple interface that
1. Asks the user type his/her email address into a textbox.
2. When the user clicks the "Evaluate Email Address" button, one of two message boxes pops up: "That is a valid email address!" with an "Information" icon, or "That is an invalid email address!" and on a second line, "Please retype your email address.", with an "Exclamation" icon
3. To be considered valid, the email address must -include an "@" symbol, and -it must end in either ".com", ".net", or ".org" or ".edu" (I don't know how to check a string and test if its last four characters end with any of these and make it say not valid email address. I think I might have to use a case statement)
I am trying to make a web browser for a school project... and I have a few questions...
The first being that I have a textbox for my address bar and I want it to do a few things, I want it to expand when i set my browser to fullscreen , be able to press enter when typing in it and it will take me to that webpage and for it to show recent history... (i know it seems like a ton of expectations mainly i would like the first 2 the third is not as important) So i dont know how to do any of that...
I also would like to know how to go about making new tabs on demand and not have a bunch of tabs just sitting there...
last question how do i go about making new windows not just for browser windows but, making something like firefoxes options window.. not necisarily to do that but just to make i guess another form pop up...
In member register page, I added email address validation but it only check the email address format, such as .com, .net, .org.If user inputs fake account such as aaabbb01010@gmail.com, how to verify it and return an error?
View 2 RepliesI've created a little procedure that I use to verify if a value does actually exist. I'm currently using this all throughout my application for things such as verifying if a control's EditValue actually has a value. I was wondering if I have missed any scenarios where a value would not be available, missing, non-existent, blank, etc., and how would I incorporate in my procedure.
Public Function ValueExist(ByRef CheckValue As Object) As Boolean
Try
ValueExist = True
If IsDBNull(CheckValue) Then
ValueExist = False
[Code] .....
I am working on an app and cannot remember how to verify that the first three characters in a zip code are a specific number.
View 1 RepliesI have not been able to successfully verify a user with LDAP for an ASP.NET web application. I have done so on our own network against Active Directory, but this is against a server outside of our network that is OID (Oracle Internet Directory).Usually, I use the following code with no problem.
Dim myDirectoryEntry As New System.DirectoryServices.DirectoryEntry("LDAP://1.2.3.4:999/OU=SomeOU,DC=Something,DC=com")
myDirectoryEntry.AuthenticationType = System.DirectoryServices.AuthenticationTypes.Sealing
myDirectoryEntry.AuthenticationType = System.DirectoryServices.AuthenticationTypes.Secure
Try
[Code]...
After that, I haven't been able to find a method to verify a user's log in information with their password and then pull back some information.
I know this is a stretch, but I am looking for some .NET help with checking Joomla passwords.For those not familiar with Joomla password scheme, it looks like this: {MD5Hash}:{SALT}HEre is the code I am using:Joomla password:
9322a02004887255b76a6a8e8971aea7:5JTTaPQjA88247nCKkTILtv8TXFtZCED
User submitted password: 123456
Dim m5t() As String = dr("password").split(":") // splict Joomla password
[code].....