.net - Error While Adding A Dropdown In Website
Jun 10, 2009
I am getting the following error while i submit a form after i added a dropdown box in my designer
System.NullReferenceException: Object reference not set to an instance of an object. at WebApplication1._Default.collectEmailBodyText() in C:v1.5_production_05June09Default.aspx.vb:line 219
Below is the extra two lines that i added in collectEmailBodyText()
tempPanelDropDownBox = DirectCast(form1.FindControl(("txt_" & panelUsed & "_ddinput") + counter.ToString()), DropDownList)
tempCollector = tempCollector + ": " + tempPanelDropDownBox.SelectedItem.Text
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May 20, 2009
I'm using the following to amend an input tag:
For Each input As HtmlElement In Me.WebBrowser1.Document.GetElementsByTagName("input")
If input.GetAttribute("name").Equals("btnCopyJob") Then
input.InvokeMember("click")[code]....
i want to be able to change the selected value to the option with value="1"?
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Mar 3, 2012
im wanting to fill a website form in using a application im making.
The application will use the values from some text boxes i will be filling in. The problem isnt about filling textboxes in on the site its the setting the value of a drop down box. here is the code im using:
WebAsos.Document.GetElementById("txtFirstName").SetAttribute("Value", txtFirst.Text)
WebAsos.Document.GetElementById("txtLastName").SetAttribute("Value", txtLast.Text)
[Code]....
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Dec 10, 2009
How can I achieve this? I've done quite a bit of searching but found no obvious solution? Surely there is a way...
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Mar 3, 2010
i am making a table through vb.net code (htmltablecell, htmltablerow..) no this table populates with an sql query and works perfectly. but inside this table in one tablecell, i need to add a dropdownlist which shall require a completely differernt query and shall run on its own on each row. so the code is as follows
Sql = "..."
rd = ExecuteReader(SqlCnn, Sql)
Dim newcounter As Integer = 0
While rd.Read()
[code]....
the ??? in the code is where the dropdownlist shall get populated each time with its own datareader and while loop and query.
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Apr 12, 2012
how to add further items to a dropdown control on the ribbon.
So far I have been able to create a number of items manually and then afterwards change the label of these items using
Globals.Ribbons.Ribbon1.DropDown1.Items(i).Label
Furthermore I found that some recommend using this to add further items to the dropdown control. But I am having a hard time trying to understand how to use it.
Globals.Factory.GetRibbonFactory.CreateRibbonComboBox.Items.Add
I would like to see a sample of how others have done it.
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Jun 14, 2010
In my VB.NET (desktop) application I'm adding items to a dropdown box like this:
Me.mnuSetup.DropDownItems.AddRange(New System.Windows.Forms.ToolStripItem() {Me.mnuAddUser, Me.mnuDeleteUser, Me.mnuChangePassword, Me.mnuClearLog, Me.ToolStripMenuItemClearStatusWindow, Me.mnuSep1, Me.mnuRefreshFileTypes, Me.mnuOptions, Me.TestHTTPSUploadToolStripMenuItem})
I only want the Me.TestHTTPSUploadToolStripMenuItem to be added if a boolean is true. How would you put an if condition inside this AddRange method?
[Code]......
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Mar 23, 2010
ok, i've been able to figure out that i can add a button to a menubar (like the file edit view, ones at the top of most programs) and so far i have figured out:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
form1.MenuStrip1.Items.Add(TextBox1.Text)
[code]......
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May 6, 2011
I am dynamically creating and adding dropdown controls to DevExpress XtraGrid.That works fine and I can add a dropdown control to any column I wish.My main problem is that I need to have the first element in the dropdown control displayed. But after I dynamically add 3 dropdown controls to the grid, only the last one has the element displayed. The previous two do not.Although, I add the elements
this is what the code looks like:
vb.net
Dim column as DevExpress.XtraGrid.RepositoryItem.GridLookupEdit
For i as Integer = 0 to dsSometing.Tables(0).Rows.Count - 1
column = New DevExpress.XtraGrid.RepositoryItem.GridLookUp
[code]....
The code will go tru and add lets say 3 dropdown controls, set their .DataSource to datasets I need, but it will only show .NullText of the last added control.
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Sep 2, 2010
Im having a hard time understanding how im going to work with this webpage. Im adding addresses to a website, when I click submit either I will get this:
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Sep 22, 2009
Recently I've been working on a huge project, and I've wanted to make a demo version for it. So users don't have to download it without checking the features, etc. Is there anyway to upload it to my website? I have a good amount of website coding experience in HTML and PHP, but not to much with Java and JavaApplets, etc.
Is there anyway I can add my program to my website for people to use? I know it's possible, people have done it before.
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May 7, 2009
I am releasing a BETA version of my program, i have made it so on load, a webbrowser on another form goes to a text document on my website, but how can i get it so it reads the text and then it will know somehow if there is a new version avaliable?
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Apr 27, 2011
I have used the last month to convert my geneology program from vb6 to vb 2010.All form work as they should, but one form with 3 dropdown menu and a tree for 15 persons and each persons field used to show a new form, where its posible to select some more functions. It possible to se the form on. The tree functions works as they should. Its possible to jump between trees, but if I choose any of the other functions on the form the function is excuted but then I got an error.url...
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Feb 7, 2012
All form work as they should, but one form with 3 dropdown menu and a tree for 15 persons and each persons field used to show a new form, where its posible to select some morefunctions. It possible to se the form onThe tree functions works as they should. Its possible to jump between trees, but if I choose any of the other functions on the form the function is excuted but then I got an error.
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Dec 20, 2010
I have created multiple dropdown list at runtime and populated with data. I also have added an eventhandler to determine the selected value of the drop down list.
The code is as follows :
Dim tbl As New Table()
tbl.EnableViewState = "true"
[code].....
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Sep 3, 2009
I have a list of servers in the first dropdown. I want to get list of all databases in the second dropdown depending on the server selected in the first dropdown.
For this I need to query each server while selecting the server.
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Dec 3, 2011
i upload my asp.net project to my server i get the following error: Parser ErrorDescription: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Could not load type 'web1.WebForm1'. Source Error:
[Code]...
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Apr 4, 2012
I am getting the following error when I am trying to build my website, It is an error to use a section registered asallowDefinition='MachineToApplication' beyond application level.Thiserror can be caused by a virtual directory not being configured as anapplication in IISI am using IIS express for my website and created a virtual directory and mapped in to a directory. Just found out since I have not mapped the virtual directory to an application it gives this error message. I cannot remove the virtual directory When I try to remove it from my website project.ion is do I have to do anything else to remove the virtual directory from my web site project.
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Dec 5, 2011
I need to send e mail from a asp.net web site. I use this code to send mail
Dim Mail As New MailMessage(fromEmail, toEmail, subject, message)
Mail.IsBodyHtml = True
Mail.Priority = MailPriority.Normal
[Code]....
Sometimes this works fine (sends the mail without any error), but sometimes it does not work and gives an error saying,
Mailbox unavailable. The server response was: address@domain.com must check for new mail first
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Aug 14, 2011
Public Function GetIPInfo(ByVal IPNumb As String, ByVal GetInfo As String) As String
Dim i1, i2 As Integer
Dim s1, s2, s3 As String
Dim IPCheckWebsite As String
[code]....
It says the website server has a 503 Error, But the site is up and works fine. Am I Doing Something Wrong?
Dim WC As System.Net.WebClient = New System.Net.WebClient()
IPCheckWebsite = WC.DownloadString("http://whatismyipaddress.com/ip/" & IPNumb)
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Feb 20, 2011
Code:
Public Function ScreenScrapeHtml(ByVal url As String) As String
Dim objRequest As WebRequest = System.Net.HttpWebRequest.Create(url)
[code]...
If it cant reach a URL it will give me this error:
Code:
Webexception was unhandeled:
Dim sr As New StreamReader(objRequest.GetResponse().GetResponseStream())
How I can add some error-handling to this code? Like if it cant reach a URL.
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Jun 15, 2010
I've got a vb (desktop) app (not a web app) that needs to connect to my website, I've been told that embedding my MySQL database credentials is a big mistake for several reasons.So, I've built a web script in PHP that runs on my server called web-service.php, it's located at www.example.com/web-service.php.Now, I'm trying to connect with this code:
Code:
Dim hwrRequest As HttpWebRequest = HttpWebRequest.Create("http://www.example.com/web-service.php")
hwrRequest.Method = "POST"
Using swWriter As New StreamWriter(hwrRequest.GetRequestStream) 'POST the info
[code]....
And when I do, I get the error "The remote server returned an error: {401} Unauthorised.", but I shouldn't need any credentials to access this. I'm just trying to POST a username and password to that page and have it query the database and then get the returned content, I'd prefer to use POST than GET so you can't see the user/pass in the URL (if possible).
EDIT: I used CPanel to password protect my website so it can't be accessed, after supplying my user & pass to access it, everything works.
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Jun 22, 2011
Scenario: We have a website that is viewed both internally and externally. When an error occurs the users are displayed with a detailed error page(Stack trace etc). Problem: The external customers do not need that much information about the error. We are looking to have the external customers see a message instead. Ex. Please contact Administrator. Also if possible we would like to log this message in our SQL database.
Note: I'm assuming I make a custom error page like - Implementing a Custom Error page on an ASP.Net website. but how do I determine whether or not the user is internal/external? Also is this the best way to approach the problem?
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Nov 28, 2010
I have programmed a web browser with Visual Basic 2010 Express and came across a major bug. Whenever I try to click a checkbox on a certain website, this error message appears:
An error has occurred in the script on this page.
Line: 193
Char: 9
Code: 0
URL: [URL]
Do you want to continue running scripts on this page?
[Yes] [No]
After clicking yes or no it just pops up again and I have to open the Task Manager just to close the browser.
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Feb 19, 2010
What Im making is like a face book and tagged login from my app
1. I have Combobox with 3 urls in there ( Facebook.com Tagged.com and Bebo.com )
2. I have a Form2 with webbrowser
3. I have a Button when clicked it should open up my form 2 and preview of the website which I selected in my combobox in form1
All I'm trying to do is when I select lets say facebook in my form 1 and click load it should open up my form 2 with facebook website in it.[code]Now when I click my button in form 1 it will load Form2 ( named Explorer1) but my form2 is not showing me facebook or tagged page for some reason
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Feb 26, 2011
i'm creating a website that allows people to upload images to the website in a folder called images on the Site. But I don't know how to upload a file and I'v searched everywhere Please Note: In this Website were not Using the asp:fileupload, were developing our own interface
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Jan 19, 2010
[I'm trying to add a Web Reference to a Windows Form in Asp.Net in Visual Studio 2008 & I'm getting the following error:The document at the url... was not recognized as a known document type.The error message from each known type may help you fix the problem: Report from 'DISCO Document' is 'Name cannot begin with the '%' character, hexadecimal value 0x25. Line
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Mar 15, 2012
Why is that everytime i add an imagae in my project (add resource) and use it as my image background i always get this error in dialog box saying..
"There were build errors. Would you like to continue and run the last successful build?"
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Apr 6, 2009
What I want is: To scan a website every 15 mins or so, (craigslist in this case), and email myself any new posts that come up. I know I need to use WebClient, but I never used that before. Another question would be how to only email when a new post is up and not receive the same email every 15 mins.
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Dec 10, 2008
I am trying to add an Access DataBase to my program as a datasource for a project.I am building in VB 2008. When I select which tables I would like to import I am getting an error that reads "Failed to add relation(s). Unexpected Error."I cheked my Database and my programming code NO Errors where found in there.Im working on windows Vista (maby a problem
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