I have a website which is code generating practically everything on the page. The home page consists of a right menu which is being built via code. It uses ystem.Web.UI.WebControls.TableCell class and creates a td for every new item.ere is a snippet of the code:
Public Sub BuildMainMenuStructure(ByVal Cell As TableCell, _
ByVal Contents As DataTable, _
ByVal ReadMode As Boolean, _
[code].....
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="calctax.aspx.vb" Inherits="lab_week1_calctax" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
[code].....
What should i do to resolve this problem?what should i use to define mathematical operators?
I'm creating a student evaluation form in a repeater that should submit the evaluation responses and update the SQL database, but I keep getting the error mentioned in the title. I'm coding in ASP.Net using VB.
Here's my code:
Student.aspx
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="Server">
[Code].....
I have a page that get value from SQL. I'm having a problem when I initialize Label object with field having TEXT data type.[code]...
View 4 RepliesI am not sure what I am supposed to write in the code behind for my vb.net project. I have a repeater that filters a gridview. When trying to declare the scalar variable @CompanyID, I get the error.
dsLetters.SelectCommand = "SELECT DISTINCT LEFT(ProductName, 1) AS [Letter]
FROM Product, CompanyLink, Company
WHERE Product.ProductID = CompanyLink.ProductID
[code]....
How to display leading zeroes in excel when we export table in EXCEL using HTML table cell logic?
View 4 RepliesI am developing a VB.NET program to search for text in a specified column from a Datagrid. I am almost finished implementing this following the MS tutorial at:[url]But now I have just one compilation error:
[code]...
Also, I'm not sure if it is good to be declaring these variables new like this since I believe I already call them new elsewhere in my code.
I'm working with a listbox that has, let's say, 20 items. The size of the listbox allows the user to see the first 5 items. However, the listbox has one preselected item which is sometimes not visible because it isn't one of the first 5 items.
After I set the selected Item for the listbox how can I ensure that the lisbox is scrolled appropriately so that the selected item is visible to the user?
What i am having trouble doing is set the current parameter to the current row at a specific column like e.row[column index]
For Each trow As TableRow In table.Rows
cmd1.CommandText = "dbo.directway"
cmd1.CommandType = CommandType.StoredProcedure
cmd1.Connection = conn
[code]....
Class 'System.Web.UI.WebControls.TableRow' cannot be indexed because it has no default property.
Im trying to write a sub where a item from the first listbox (listbox1) is transferred to the second listbox(listbox2). When I try to call it on the button handler I get the following error:
[Code]...
if a new value of Calendar is selected, it would trigger .SelectionChanged event, but what if same selected value is clicked again? How should i identify it uniquely?
View 2 Replieswhen view in browser, i got this error: Unable to cast object of type 'ASP.webform1_aspx' to type 'System.Web.UI.WebControls.Button'.
how should i solve this problem?
Line 7: If Not Page.IsPostBack Then
Line 8: Dim rowIndex As Integer = 0
<b>Line 9: Dim btn As Button = DirectCast(sender, Button)</b>
[Code].....
I need a good alternative for System.Web that is included in the .NET 4 Client Profile. Currently all of my frameworks are included in the client profile, except System.Web. What is a good alternative?
View 7 RepliesI found this code below to find the external IP address of the system it is run on, but I was wondering is there another method of finding this information out without the need of using this external website incase it isnt operational anymore.[code]
View 3 RepliesLets say I have a tablecell and I want to add to it more then one control To HyperLinks for example (I know its ASP.NET but I guess its the same cause its still visual Basic) I can add one control by using
TableCellID.Controls.Add(NewHyperLink)
But if i want to add another Hyper Link, How do I do that ?
I've a asp.net table and I'm trying to format my columns to be all equal widths, or say 4 columns of 20%, 30%, 20% and 30%. However the following code is not working:
<asp:TableCell Width="30%"> The 'height' attribute works but this isn't the one I'm after.
I have the following method to strip hidden and user-specified columns from a gridviewrow and return a tablerow. [Code] However, when I run this code and hit the Add method for the TableRow, I get an InvalidOperationException stating the Collection was modified; enumeration operation may not execute. I've gotten this exception before, but usually it's because I'm attempting to modify a table that is databound.
View 3 RepliesI've created an app (VB.NET) where each installation of the app works with a single local database on the PC. No multiuser and no ability for the user to change databases - the database is effectively part of the app, with a fixed scema, only the data will change.At the moment the database is SQL CE. It has about 30 tables with some simple relationships between the tables.
I'm wondering if there is an alternative to SQL CE that might be faster in this scenario. Although SQL CE is excellent and easy to use, I get the feeling there is perhaps an unecessary overhead when using it for something simple - and it does seem a little slow when my app is doing complex stuff that interacts a lot with the DB. In my prototype I actually loaded the 'database' tables from text files into Arrays and developed subs and functions to perform the database searches etc. It was blindingly fast but I realised it wasn't a scaleable solution because it was an 'in-memory' database. A compromise would be to 'page' data into array when needed, but it all gets horribly complex and that's probably why some very clver people have created SQL CE !
Using VB.net, I have a namespace which I'd like to rename for the future. However, I'd also like to keep the old obsolete namespace for a time to ensure backward-compatibility for our consumers for awhile. Is there a way in .NET to have two namespaces, one ordinary and one that merely is an alternative name for the other?
[Code]...
From the WINDOWS Date & Time settings FORM is this accessible as an alternative
View 1 RepliesBelow is the code for a linked list search I have tried to implement in to searching through each of the elements of htmlelements .For some reason If element.InnerText = (item) will only work if if is only a string ("example") .Are there any other ways of Implementing the for each loop to search through my item linked list?
Original code for searching for 1 string
Private Sub block()
Dim elements As HtmlElementCollection = webBrowser.document.All
Dim word_found As Boolean
word_found = False
[CODE]...
This is the Loop for item I have tried to implement but is not working ,because of the for each loop .The value of element.Innertext = "" or null when I try to use one of the linked list item[If element.InnerText = (item)] is used and only have a value when a string is used to [If element.InnerText = (google)]
Private Sub block()
Dim elements As HtmlElementCollection = webBrowser.document.All
Dim word_found As Boolean
word_found = False
Dim item As LinkedListItem = words.Head
[CODE]...
I've encountered a problem in a application that I inherited. It contains a combo box that loads information.The problem is that there are more data that the control will hold (32767
View 2 RepliesIs there an alternative to Uri.EscapeDataString? I'm trying to upload an image, by converting it into a base64 string, but I need to use Uri.EscapeDataString on it first, and if the image is big then Uri.EscapeDataString will say that the URI is too long.
View 2 RepliesMy clients web application is using TidyCOM to clean up dynamically created XML files from a SQL database query. With this TidyCOM, they are not able to upgrade the web application to .Net 4.0 framework. Is there an alternative to using TidyCOM so that these dynamically created XML files are validated correctly?
View 1 RepliesWe heard a lot about the vulnerabilities of using QueryStrings and the possible attacks.Aside from that, yesterday, an error irritated me so much that i just decide to stop using QueryStrings, i was passing something like[code]....
View 8 RepliesMy VB application also needs to manage simple appointments in an agenda, however one user has no MSOutlook. Someone knows of an alternative calendar tool, with which I can do this?
View 2 Repliesis there an alternative for timer?
View 4 RepliesSo I've been doing a lot of reading today and apparently SendKeys isn't very reliable anymore.Does anyone know of another alternative to it for what I need:
The application works by the form being positioned over a open window, notepad, word, excel etc and it then determines what it is over, notepad, word, excel etc and then reads the file, and does some processing using SendKeys at the moment.Though I do believe I could probably change the later at some point. The problem I'm having right now is when I try to send the Alt + Tab to change focus it's working roughly 12% of the time.If you are wondering I ran it 50 times and it worked 6 of those,thus the 12%.I'm thinking that is rather unacceptable.This is what I'm using which should work: SendKeys.SendWait("%{TAB}")
XP Service Pack 3 and vb.net 2005
First off, using VB2010. I'm in the process of upgrading some applications from VB6 to 2010 and haveing a great time of it. The current application I'm working on is using Sendkeys of which I have changed over to the WSH.Sendkeys of which is pretty decent. Basically the program is copy and pasting the current open file, reading some data and saving it as a different file type. It also has to change xls files to csv and then saving it to the format as well as a smiliar thing with word. Thus the reason for the copy and paste as it's changing the extension to a dot date (for example, test.830).This is the flow of how it works for a text file (most basic)
1. changes focus to notepad
2. Select all Copy to ClipBoard
3. Open Programmers File Editor and a blank file
4. Paste in text
5. Save as code.date extension to the directory
Excel files obviously have a few extra steps.
I have an MDI Windows Forms application (.net 2008) that allows the user to associate various file types with the application. I currently do this with a registry entry something like this, that causes the application to load and access the file name via the command line:[code...]
In the pre-.net version of the application, I used DDE (ddeexec in the registry). If an instance of the application was executing when a file was double-clicked in Windows Explorer, it would open the file without starting up a new instance of the application.
Now that DDE has been deprecated by Microsoft, what is the best way in .net for an executing MDI application to open an additional file when the file is double-clicked in Explorer, as opposed to starting a new instance of the application?
