I want to fetch data from a database table modify it and update it without being dependent on the database provider and the database structure, because it will be part of a library.My first attempt was as follows:
'factory defined somewhere else as DbProviderFactory
'connection is a working DbConnection
Dim selectcmd As DbCommand = connection.CreateCommand()[code]....
it did not work. After further investigation I figured out that the Commands the CommandBuilder generated were useless, because it inserted ? instead of @param1 for all Parameters. It generated something like INSERT INTO tbl1 (field1, field2, field3) VALUES (?, ?, ?) for the InsertCommand.I would really like to use the CommandBuilder, because it is simple and I don't have something complicated like JOINS.
I have an Excel worksheet with a Source Cell and a Target Cell.Via GDI API functions, I draw a temporary gradient fill over the source cell which happens to be cell "D6"then, I make a transparent copy of the temp gradient fill drawn over the source cell and place the copy (ie the transparent gradient fill) over the target cell which happens to be cell "D9".
Dim clcexists = (From p In dbContext.Signatures _ Where p.StudentID = people_id _ And p.ContractType = "clc" _ Order By p.ID Descending _ Select p)
Later I check whether any rows exist in clcexists using IsNothing like so:
If IsNothing(clcexists) Then ' If no CLC is on file. clcfirst = Date.Now.Subtract(year) clcdate = clcfirst
[Code]....
But IsNothing() is not functioning like I expect. There is no row in the results table, but it is still acting as if there is and going to the Else clause.
I am running Windows 7 pro and using Visual Basic 2010 express.I have written a small program to switch on a USB relay which is controled by a serial port.I have debuged the program and it appears to work correctly. I have published the program and if I start it from thr run menu / desktop shortcut / or through explorer it works as expected.
However I have tried to run it by the Task Scheduler and then it fails to run as expected. I have a small section of code that checks to see if the serial port is present if not I have used messagebox.show to ask for the relay to be pluged in. In every case other than when running through the Task Scheduler the messagebox works with the Task schedulerit doesn't show the messagebox and the program hangs I have included the code I have used.
Dim retry As Boolean = False Dim data() As Byte = {255, 1, 1} Do Until retry
[URL]. I have a Multi-Line textbox with several accounts in it. They are in email@email.comassword format on separate lines. All the code is right, but it goes really weird and loops like 3 times before logging in. Eventually logging into the last account on the Textbox instead of the first. It should just login to the first account...Logout....Login to the second account...Logout and continue the process.
If you want to test it, just put a web browser and a textbox1 multiline box, a button and enter a few working hotmail accounts and you'll see. Check line 17 Looks like a lot of code, but line 17 is the only bit that needs to be looked at. The rest is just junk/non-relevant to this problem. It separates the accounts perfectly and stuff, but just wont login in the right order.
I have declared a String variable(PC) for use within another String variable(currentQuery) to form a SQL statement to pass to my SQLDataAdapter variable.
I'm performing this action to change the string variable(PC) for the different onClick events I have.
It seems i can change this variable (PC) within my onClick event handlers and the 'PC' variable will change when I apply it to a testing Text Box 'testTextBox' but not for the currentQuery variable.
Do i need to perform this action as a function or am i missing something obvious - code below - I don't want to spend time writing a function to return a string value for my SQL statement if i can just tweek something in my code (below).
Partial Public Class IVMain Inherits System.Web.UI.Page Dim DBConn As New SqlConnection("Data Source=hnaServer;Initial Catalog=Hnastatus;User ID=Test;Password=test")
I have a form with a split panel. In the one split are a group of buttons which I want to programmatically change the color of the last pressed button.The following loop seems to run correctly and set the colors correctly but the form doesn't represent that. Once the loop is completed and I recheck the button colors, they revert to previous state.[code]I can get the desired effect by doing the below code but seems less elegant and would obviously require updates as buttons would be added or removed.[code]
I was toying around with some of the linq samples that come with LINQPad. In the "C# 3.0 in a Nutshell" folder, under Chater 9 - Grouping, there is a sample query called "Grouping by Multiple Keys". It contains the following query:
from n in new[] { "Tom", "Dick", "Harry", "Mary", "Jay" }.AsQueryable() group n by new {
However it always returns 0. I've checked and the GetPartCost function executes and returns a non-zero number but the list item cost properties are never updated.The property is just a simple property,
Public Property Cost() As Double Get Return _Cost[code]....
If I set a breakpoint in the Set of the property, it never gets hit.
Full Program: Option Strict On : Option Explicit On Module Module1
[Code]...
After I ran it, I had a file a.txt in my debug folder but the size is 0 bytes (and when i open it is empty of course) Shouldn't the output had "asd" in it ?
I'm not sure why the following code is not working as intended:
CODE:
Where litMessage is the name of the literal control and messageBody is the name of the string variable.
My intention is to output a string onto a web page and to replace the line breaks with a br tag so that it can be displayed on the page correctly. However, nothing is replaced. When viewing the page source, it looks like the line breaks still exist in the string. Similarly, when displaying the string via MsgBox, it displays normally as well. I have also tried wrapping the output with the pre tag and it displays the line breaks properly as well.
The string was originally entered by a user through the use of an asp:Textbox and saved into a MSSQL database. It's retrieved and displayed on another webpage using an asp:Literal control. The only thing that happens to the string before it is submitted is that it is trimmed (i.e. textbox.Text.Trim()).
Perhaps there is something I did not consider?
Edit #1: Due to time constraints, I've decided to just wrap the text with the pre tag. It's an acceptable work around as it preserves the line breaks. Unfortunately, it doesn't explain why the code didn't work in the first place. In the meantime, I'll just leave the question unanswered until I find a proper answer.
Edit #2: Solution found and answered below. UpdatePanel tag added to the question for future reference.
Does anyone know what is wrong with this IF Statement? I'm getting the errors "Expression Expected" and "End of Statement Expected".If DropDownList1.SelectedValue = "Educational Sponsoring" Or "Grants" Or "Product Training" Or "Centres of Excellence" Then
I have a statement 'ptr.Line((xmin, ymin) - (xmax, ymax), B)' which was originally coded in VB 6.0. Could anyone tell me why this code is now throwing an error in VB.NET?
why the Output window does not print the "xxxxx" part of the string? Looks like I'm missing some basic understanding about something...?
I'm sending string messages over TcpClient, and when building the strings, I don't add any special characters on the sender side, and neither on the receiver side.
[URL]
EDIT:
I'm building my strings at the sender side like this:
Private Sub SendData(ByVal stringArray As String()) SendData(GetMessageString(stringArray)) End Sub Public Function GetMessageString(ByVal array As String()) As String
For some reason when i declare an array and set it to a certain amount of elements then under it specify the elements it works in VB 2005 but when i do it in VB 2008 it get : "declaration expected " and i get words underlined.
Public Class Form1 Dim words(20) As String words(1)="Computer" End Class
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim Mail As New MailMessage Mail.Subject = ""
Error occurs at the line above.
Dim SMTP As New SmtpClient("smtp.gmail.com") SMTP.EnableSsl = True
ODBC_COM = New OdbcCommand("UPDATE President SET '" & President_UPDATE_field.Text & "'='" & President_UPDATE_text.Text + "'", ODBC_CON) ODBC_COM.ExecuteNonQuery()
i dont know why im having error like this, what i know is my syntax for UPDATE command is correct and im using correct number of single quotes and double quotes?
Everywhere text is in Black i get the error "Type Expected"
Private Sub Done(ByVal sender As Object, ByVal e As Windows.Forms.WebBrowserDocumentCompletedEventArgs) TabControl1.SelectedTab.Text = CType(TabControl1.SelectedTab.Controls.Item(0),
(The Lines array is actually just the count of Paragraphs in the text, why they call it lines I don't know. )In order to do this, with word wrap, I need to know when I reach the end of a line. So in the Key_Down event I use some code to calculate the length of the current string and compare it to the width of the container. It turns out that the string is too short.
Have not used JavaScript for a while. Just started to review JavaScript in order to learnASP.net Ajax. The coding below showed the underline errors over the first showclock() and the following { -- Expected ';'After adding all the ';' the underline errors were still there The webpage just showed an empty form and an '>'What's wrong with the JavaScript coding?
