I'm from a Visual Basic 6/VBA background and I'm moving to VB.Net. I've got a field on a form and I want to look at the value of the field BEFORE it was changed by the user. In VBA/VB6 I simply sais Me.FieldName.OldValue to get the original value. How do i do this in VB.net?
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How do I check if the original value of a text box has been modified?
I have a few textbox controls on a form. When form loads; user enters data in these fields but later change his mind and modifies what was entered earlier. I need to know which textbox or txtboxes were modified.
have a subroutine which parameter is an array like below:
Private Sub DoubleArrayValues(ByVal arr() As Integer)
Double the values.
[code].....
I have a problem with the Validation of a Integer-Field in my application.Its an Access DB on a Windows Form.I implemented the validation in DataSet.vb using an ErrorProvider on my Form.The field name is FNr and should not accept duplicate numbers.If the field value is changed, a query checks if the number already exists in the Datatable and if so it sets the error on that field.If the user tries to change the field to a number which is a duplicate I want to cancel the input back to the original number. This works but the
Error message is still shown by the ErrorProvider.The code is partially in DataSet.vb and in Form.vb
Public Class Funktionen
Private Sub FunktionenBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FunktionenBindingNavigatorSaveItem.Click
Me.Validate()[code]......
I'm trying to make the textbox field active when listbox selecteditems is change so I know I have to but something in the selecteditemchanged action of the listbox, but what?I tried:
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
TextBox1.Enabled = True
End Sub
But it didn't work..
I changed my Username on my computer from i.e. "xxxxxx x xxxxx" to "Dennis"
VB 2008 during a compile gave me the following error: Error reading icon 'C:Usersxxxxxx x xxxxxAppDataRoamingMicrosoftVBExpress9.0VSProjectApplication.ico' -- The system cannot find the path specified.
The file "VSProjectApplication.ico" is in 'C:UsersDennisAppDataRoamingMicrosoftVBExpress9.0'
Somewhere in the VB2008 "configuration" files I believe that I need to manually change the old path to the new path.
I found the old path in the ".suo" file. The ".suo" file is not a text file. How can I edit the .suo file, save it so that it will work?
on my Form I have a DataViewGrid and some textboxes with a save button (they are filled with additional data of the selected row).Save is disabled first, when I change something in the textboxes the save button is enabled.When the user changes a gow in the grid, I want to ask before changing the grid row, if he wants to save (if the button is enabled).I am using RowEnter but this is too late, then the selected row already changed (and my textboxes already got new data)...What event can I use to ask if I should save stuff before the user changes a row?Something like BeforeRowChanging with a chance to cancel changing the row?
View 2 RepliesI am building a data based application using VB 2008 an SQL Express. I need to create textboxes on my form using code, (With & End With) method. I need a simple code string that will allow the app to check if the field to wich the textbox wil be databound is Nul, If so the textbox will not be created.
View 8 RepliesThere are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
View 1 RepliesI am trying to edit a dbf table. I would like to be able to rename field headings and change the field type, ie string or dbl, and the size of the field. is this possible to do with vb.net. I have connected to the dbf file but after that am lost on what to do.
View 3 Repliesi used to r-click on file > property > tab version and see the original file name
but now i 1 2 using vb.net to get this name.
Is there any way to get the original text from a Asp:Label on a page, after the text has been altered?
with the orginal text i mean the text that is hard coded into the asp.net markup.
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.Text
[code]....
I can't get the original decrypted password.
This is a big idea and I'm unsure of how easy or difficult this really is. I do not know how I would get this even started. What I am trying to accomplish is "docking" so to speak, a sub form into the original. Basically, there are 2 forms open, but one is like a helper so to speak. This concept is not new as many programs use it. An example is a program widely used call Teamviewer. If you use Teamviewer, open the "Partner List" Pane at the bottom to see exactly what I am talking about. Basically, it opens a new form that is next to it.
[Code]...
I have a .csv file with data as below
[Code]...
I am using VB 2008 and Access DataBase. My code need to store original data values for row being updated to compare it with new values later. For this to accomplish I wrote following
Dim dRowOriginalRow
As DSetPurchaseSale.PurchasesRow
Private
Sub btnEdit_Click(ByVal
sender As System.Object,
[Code] .....
When I am running this code, i am not getting the original values in dRowOriginalRow variable insted it is also updating with new changes made in controls, so the dRowOriginalRow and dRowModifiedRow are always same. Again may I use Equal To sigh to compare both rows as I did in my code?
True : dtPurchaseDate.Focus()
I have a program that my boss ask me to add something on it for report generation but this is a finished program. My problem is if I add a script on this program and build and run using the debugger, the IDE will create a duplicate of my class and will read the original script. I copied the program and place it on a different drive so as I will still have a back-up of the original program at drive c:. And I tried to copy the program again and put it on a different folder but I still have the same problem.
View 1 RepliesHow do I know the original number of digits that appear in this way 5.555555E+36
View 6 RepliesI do not have access to the DLLs currently in production on a new project I am taking over. The source code is accessable but I want a copy of the original DLLs that were compiled and implemented in production via GAC. When I explore 'C:WINDOWSassembly' the DLLs are properly registered there as expected. I understand the GAC store the DLLs somewhere. where so I can get copies of them. The OS of the machine is Windows 2008 Enterprise.
View 2 RepliesI have a text file to read. Then i took the lines from the text file and write in temporary file. Now i want to overwrite the lines from temporary file to original file.My original file contain Top and bottom part.
My temporary file look like this
4.5 28 Red (T1 ) [1 12.86 53.8] 100.00 100.00 198452 -1309 | 11.0 28 Red (2 13.10 04.0) [T1 ] 130611 2948 100.00 100.00
1.5 28 Blue (T2 ) [1 07.06 59.1] 102.54 100.00 190456 39339 | 6.5 28 Blue (2 03.00 03.0) [T2 ] 132111 -67725 102.54 100.00
[code]....
So i want to overwrite the lines before "|" to the Top part and the line after the "|" to bottom part.. I attach my original and temporary files.
I am writing a little app for getting my self folder art from a dedicated web site themoviedb.
they output all the links and every thing in xml to make it easier to pick up on and i am not stealing this is a site where you can do this sort of thing.
i dont really know alot about xml all the examples seen get me so far but i am not sure what to do to get right to image urls.
sample xml as follows
[code...]
I can get to the xml inside the images node. I thought next level would be the child but i cant bring it up i could regex it but i thought the whole point of xml was to able to get to a peice of info within it easily. I would like to get the url for the poster original size(first one in the highlighted list)
I need to set a field that i have dumped into a dictionary to a value that is always a string, (well, it came from an xmlElement, so the .value is a string)
Function setMembers(ByRef ClssObj As Object, ByRef nLinkObj as Object, ByRef xml As XElement) as integer
Dim fields As New Dictionary(Of String, FieldInfo)
[code].....
I want to be able to add values inside the last (default) row in the DGV and when I click save, the value will be save to the xml currently when I do I get error - "Object reference not set to an instance of an object."the error occurs in the red highlighted.[code]
View 8 RepliesI've come unstuck on a certain point. I am trying to find a way to compare two lists and output only lines which are unique. In other words, remove both occurrences of duplicate lines.I'm relatively inexperienced with VB.NET, but this is how far I have managed to come;
Code:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim LinksList1, LinksList2 As String
LinksList1 = Replace(RichTextBox1.Text, "#vch", "") : LinksList2 = Replace(RichTextBox2.Text, "#vch", "")
[code]....
1) search the array to find duplicates and add them to a second array, then have a second pass to remove anything which matches the second array.
2) search the array for one duplicate and store it, then search the array again to remove the duplicates, and run that process until there are no more duplicates.
Then again, I could be going about this completely the wrong way. If that's the case, feel free to knock some sense into me.
I have wired up a Global class to an HttpModule. It's job is to detect "http:/www." in the URL and redirect the user to the NON www. version
Protected Sub OnBeginRequest(ByVal sender As Object, ByVal e As EventArgs)
'Force Removal of WWW
Dim application As HttpApplication = TryCast(sender, HttpApplication)
[code]....
not something I want to do anyways since it's a hack, but it didn't work anyways.
I made a copy of a VB application project, to make a copy of it for testing.
But when I debug the test copy while the orginal is still running (debugging from Visual Studio), focus changes to the original's main form, and the test copy does not run.
If I try to single step the test copy, same thing, focus changes to original, and test copy does not even step.
I am using the following code in my program's save method:
aGuestsTableAdapter.Update(guestsDataSet)
This appears to update the .mdf file in the inDebug folder but the update does not make it all the way through to my original data source .mdf file in my Solution Explorer.
in school im making a dodge ball game but i cannot get the ball to return to its original position. My code and form are below
[Code]...
wizards of the web i have a problem with my computer i no long have windows xp i have a beta product that is no good an i would like to return my computer back to its original windows xp how do i do that for my computer?19slim69
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