I made a program which uses sample.dll. The program communicates with this .dll and does various tasks. Now, lets say I developed a new dll (an update, pretty much). Can I just give my users a new copy of the .dll or do I have to re-reference it in my project and then compile my programs all over and then give them a new copy of the entire program?
View 5 Repliesvs 2010, vb.net My program uses clickonce to automatically check my website for an updated publish, and then download and install if a newer version exists. I have been publishing my updates with the database excluded because if I include it, it overwrites the user's existing database with a new empty database.
My issue is that the new version of my software needs to have additional columns added to the existing database so that the user can save additional information. For example, the previous database table allowed saving client first name and last name, but the new version needs to have a new column for "address".
Is there a way for me to add a permanent database table or add a column to the user's existing database table without overwriting their current data?
I'm using the following code
' Visual Basic
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
[CODE]..........
Its straight off the Microsoft site found here: [URL]
When I add the required components and click on the button, my app simply disappears, closes, goes right back into a stopped state. No errors, No Warnings, No issues. Nothing. Its as-if there is a stray "END" just before the IF statement. (But there isn't) Its stopping right at the IF statement. My app (THEIR CODE) just makes it disappear and "Stop". The code was working about an hour ago, but now nothing, and thats the only code on the project.
part of my code is in below
[Code]...
I would expect to see the path.Path include the new record, however, I also notice that tempnextgen also include the new record. Can anyone help me out on this issue? Why the tempnextgen got updated as well, how to prevent this unexpected operation?
Finding the right way to code my program. I want to have the Now.DayOfWeek updated every 60 sec, as it only update on startup. I have been trying many diffident solutions but just can seem to find one which works.
Public Sub New()
'Opbygning af menuen
mnuDisplayForm = New ToolStripMenuItem("Vis bnings tider")
[CODE]...
Whenever I change a user setting in app.config (via running the program) the change doesn't appear in the app.config file (it stays the same). When re-running the program, however, the change is reflected in the program's behaviour. How can this happen if app.config wasn't altered when the program was last run?
View 2 RepliesI made an auto updater, it downloads the new version of my multi tool to the startuppath.I want it to replace with the old multi tool (which is still running).I asked some people, they don't know how to do it.So maybe you guys know how?
View 25 RepliesI got this form with 2 textboxes and 2 buttons, when clicking each button, the corresponding textbox should show 1, problem is none of these textboxes show anything
here's the code in form1
Imports System.Threading
Public Class Form1
Dim mc As New mycl
[Code]....
Currently I'm working on a retro-pong game using graphics. The problem is, my code keeps drawing new ellipses every time, and doesn't discard the old ones.
Current
Private Sub timeEngine_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tmeEngine.Tick
[Code].....
I have an issue with a data table that I have updated using the datatable.update command.The datatable is bound to the datagridview using dgv.datasource = datatable.I have used INSERT and UPDATE commands and the INSERT command writes the data back to the database ok. However my problem is that it the dgv is not updated with the primary key (ID field) from the database. So when I save a second time, instead of updating it just inserts the data again.
[Code]...
I have run into a problem with saving to database when running the program I am making.
I have an mdf file called prices.mdf and have set the "copy to output directory" to copy if newer setting and set this for the ldf file build action is set to content.. should it be compile or a different setting??
I access this database thru a dataset called pricelist dataset and when the program runs and you go to forms to update the prices, each form has a datagrid with the toolbar and the save icon. Mostly I followed tutorials to help me put it together.
When you run the change price menu for each part of the database, they appear to save each time u re run the program. But once you close down vb2010 and reopen it a day or so later and rerun, the new prices are gone and the old prices are being used.
I thought changing the setting on the mdf file to copy if newer is the usual fix for this, but as I said I have already got it set to copy if newer.
I can't figure out how to track what the dataset is accessing to make sure it is going to that database, or if i have made some sort of other database that it is accessing instead as well as the mdf database.
when I look at the dataset and the column entries for each part of the prices database, as to whether i need to check the dataset itself, or the forms the datagrids are on with the toolbar save icon, or whether there is another place to check to see if it needs to be changed to something like change if newer.
Obviously the program is working and doing the changes, but not storing them in the right place, so I am losing the changes once i shut down my project and reopen it.
also I have looked at the file propertiesand made sure they all set to copy if newer PricelistDataSet.xsd, pricelistdataset.designer.vb, and also the pricelist dataset.vb, xcs and xss ones are all set to copy if newer when I look in the solution explorer.butsome of the build part is set to compile on some and none for others As I am not experienced with VB 2010 or databases I am not sure how to track it down
Update: Just looked under each of the forms the data grids are on. and see the copy to output directorys on these are set to do not copy for each of the designer.vb, vb and resx. I am bit hesitant to change these without getting some advice from more experienced people if the forms also need to be set up to copy if newer.
This is what is shown in the coding on one of the forms if u double click on the save icon in toolbar
Private Sub TimberpricesBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TimberpricesBindingNavigatorSaveItem.Click
[Code]....
It was coded by dragging the things from the dataset as a datagrid onto the form. It is not coding I worked out, in case more needs to be added to the coding
I know that you can refer to a form "indirectly" by simply including "me" instead of "form1," for example.
Is there a way to do the same thing for form elements like text boxes or radio buttons?
Example:
CODE:
The following code writes some data on an xml file. If I want to write on the same file twice the code overwrites the old data with new ones. How do I update the data instead of overwriting them? (i.e., write at the end of the xml file instead of overwriting the data)
Dim XMLobj As Xml.XmlTextWriter
Dim enc As New System.[Text].UnicodeEncoding()
XMLobj = New Xml.XmlTextWriter("C:" & current_scen & ".xml", enc)[code].....
I am having a problem where when I save some text to an XML file it overwrites originally what was in there, I want to be able to add to the file. The file looks like this:
<Incident>
<name></name>
<Department></Department>
<Incident></Incident>
[code].....
I am having some troubles with a project of mine. Its a basic financial manager for windows mobile 5 using VB.net. Everything works fine, however, when a value is saved in xml, it will be overwritten when another is saved. I want it to add these values instead of overwriting them entirely.[code]
View 2 RepliesI am having some troubles with a project of mine. Its a basic financial manager for windows mobile 5 using VB.net. Everything works fine, however, when a value is saved in xml, it will be overwritten when another is saved. I want it to add these values instead of overwriting them entirely.
Private Sub MenuItem3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem3.Click
Dim writer As New XmlTextWriter("product.xml", Nothing)
[code].....
I have a database called NurseLocationI have a table called CoverList with two fields UserId and CoveringI can connect to the database fine and read the fields into variables that I can use in my program. w I want to take an existing variable called userFullName and put it into the Covering field where the UserId is = to "LHV"This is my code on button click to do that.But I was told I shouldn't use INSERT because it creates a new field
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Declare variables and get username from active directory
[code].....
the program im working on is a form with multiple controls (textboxes,combobox, etc.) and it goes out and reads in a text file called test2.txt and plugs in values to the controls. the user will be able to change text in the fields and when they hit apply, it needs to overwrite the file.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim theFile As String = "c:\temp\test2.txt"
Dim lines() As String = System.IO.File.ReadAllLines("c:\temp\test2.txt")
[code]....
with the given code, it errors out and tells me the file is already being used and can't be copied.how can i go about closing the file and THEN overwriting it?
ive managed to finally get it all working.if i click submit.. a file is then created in xml format but if i enter new data it will overwrite the same file how do i stop this.[code]how do i stop this from overwriting?
View 1 RepliesI have the following which searches the domain and lists out each user. I am writing them to a text file. The problem is each user name as it is found overwrites the other one.
I need them listed one under the other. Have I misplaced the Using statement?
Dim de As New DirectoryEntry()
'Name place to write file to
Dim strFile As String = "C:MyFile.txt"
[Code]......
i have made a program that takes info from your registry and uploads it so I can fix it and you can download the new version of a key that makes things work faster.... when someone uploads a file, it works good, and i can look at the ftp's text file and see it, but every time someone ELSE uploads something, it overwrites the previous text file and makes another one, which deletes the first one. i would like so that when another person uploads something, it will just be on the second line then third, so on so forth.
View 1 Replies[code]...
I checked the contents of the array at the end and it only held the last records within the text file, which suggest that it is overwriting the array, how can i prevent this?
I'm trying to edit an existing xls and just overwrite it without a prompt to overwrite. I thought it was something like Excel.DisplayAlerts = False but that's erroring with 'DisplayAlerts' is not a member of excel.
So this is my current closing code that doesn't work.
oBook.SaveAs(ExcelFilename)
Excel.DisplayAlerts = False
oBook.close()
oExcel.Quit()
Short and simple question. In Winforms you can bind a dataview to a combobox or some other control by simply:
combobox.DataSource = dataview
combobox.DisplayMember = "Something"
In WPF I've generally done databinding using an ObservableCollection and edits to the xaml. Is there a way to quickly do it, like the above? Edit: This seems to be the simplest/quickest thing I can come up with, anything inherently wrong with it?
[Code]....
I'm creating an app that will be run via scheduled task, it will save an XLS file with the following naming convention:'S14-PROORDEREXP-Thursday' (the Thursday will change depending on what day of the week it is)I have the following line of code to save this excel file:
VB
If gstrJob = "S11" Then
xlWorkSheet.SaveAs(gstrFilePathS11 & gstrFileNameS11 & gstrFileTypeS11)
Else
[code].....
this will work fine the first time this scheduled task runs and there are no existing files but at the end of 1 week when I will be overwriting the existing files, how do I tell the application to overwrite the existing files without waiting on a yes prompt from me which it does in debug mode?
I currently have two applications. The main app and the updater app. When the main app checks his version with the webservice and it is out of date, it will download a zip archive and then start the updater. The updater will extract the zip archive overwriting the old files of the main app.
Is it possible to do this without the need of a 2nd app, in this case the updater? Can you like, store your application in the computers memory and overwrite the files?
The program I am making uses a save dialog box and when I save a file it works fine. When I save and overwrite the file it seems to append the data. For some reason it keeps all previous data and just writes the data again. I'm using the XMLWriter to save the files. Is there any way of fixing this?
View 5 RepliesCan I use VB.Net's generics to simply Wpf notifiable bound controls?
View 1 RepliesI have a dataGridView and tied it to a button that saves every time you click it. and every time you click it, I want to write a line to a txtfile that displays how many records were changed and the date that they were changed. Everything works fine but every time a save has been made it over write the previous entry on the text file. Here is some of the code.
If changes > 0 Then
MessageBox.Show(changes & " changed rows were stored in the database.") ' changes shows how many entries were changed
swDate.WriteLine(changes & " record changes on " & entryDate) 'entryDate is formated as date with value of "Now"
Else
[code]....
I am getting the right results in the text file except it over writes previous entry's so there is only one entry saved in the text file at any given time. I want it to keep building the text file so every time something is streamWrited the previous things in the text file stay there and it add to it. Looking at my problem I cant really justify or implement a For Each..Next or a Do While..Loop. My vb knowledge is limited so go easy on me.
I am going to handle an event to write all files in a directory to a text file.But only the last file's context is saved successfully, I think that because of overwriting.
Private Sub ExtractButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ExtractButton.Click
Dim FileName As String
Dim FileItem As ListViewItem
[code]....