TextBox Not Updating?
Nov 23, 2010I'm trying to update a text field... in this manner:The main form (where I have the design)
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Textbox Not Updating Between Functions
Oct 17, 2011I have a progress bar for each function, but I would like a textbox to show the user what stage of the update they are on. The textbox becomes visible but the text does not display the text.
Private Sub btnUpdateAll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdateAll.Click
txtUpdating.Visible = True
txtUpdating.Text = "Updating ALPS Data..."
UpdateALPS_Data()
[Code] .....
Updating A Record From A Textbox
Aug 20, 2010i try to create a windows form that act something smilar to a cash machine i managed to enter a mount with my first button then my second button is for withdrawing money it checks the amount in the text amount if it is higher than the amount the small dat hold in the amount it will throw an error message if it is less or equal it write the amount in the text box my goal is to deduct that amount in the textbox amount from the amount already at the database.[code]
View 2 RepliesUpdating A Textbox From Another Thread?
Feb 7, 2010I have been trying to update a textbox on the main form of my program using a different thread, however the changes are not relected in the textbox.I am using MS Dev studio 2010 beta 2.0 .NET 4.0. Here's my code....
The main form
Code:
Public Class frmMain
Private Engine As New clsEngine
Private txtMessage As String
[Code]...
Interface And Graphics :: TextBox Not Updating?
Nov 23, 2010I'm trying to update a text field... in this manner:The main form (where I have the design):
Code:
Public Class Form1
Public Sub ChangeTextBox(ByVal vVal As String)
TextBox1.Text = TextBox1.Text & vVal
[code].....
First I click on the button to open the port. Then I do this code so whenever I receive data from a serial port connection, "Hello" string is written in the text field.. I debugged it, made sure COM Port is open, and data seems to pass to the textbox.. because when I put my mouse over to display the values inside the textbox it shows that "Hello" is stored.. and I tried doing the textbox1.refresh() but still nothing happens.. the textbox remains empty!
Progress Bar / Updating TextBox During Event
Apr 26, 2010I am writing my first app in VBEE and require your expert assistance.Once a button is clicked in my app, a number of queries in Access 2007 are run. I would like to display the progress of these queries and send text to a text box informing the user of the progress, i.e.[code]I have entered the Text I want to display but it does not update it as it progresses through the code, instead it updates all of the text at the end, once all of the queries have been run.I would also like a progress bar to display the progress of the queries [code]
View 1 RepliesTextbox.Text Property Not Updating?
Apr 19, 2010I have a windows form which contains a textbox.I have a loop in my code doing some farly intensive work. In the middle of the loop I want to update my text box.text property on the form to let my users see some simple progress.
View 7 RepliesUpdating Output With A Keypress In A Textbox?
Nov 2, 2009I have a form thats an invoice generator. You type numbers into the text box and it displays totals in the listbox at the bottom. I was trying to make it so that as you typed into the textbox it would update the listbox.
Private Sub txtWBQuantity_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtWBQuantity.KeyPress
'This section makes it so that you can not type a letter into the txtWBQuantity textbox
[Code]....
It works kind of, after I hit the next key it calculates the total of the first number I typed then writes the next number, how can I make it calculate the total after I hit the key?
VS 2010 Updating A Textbox On Itemselect?
Oct 28, 2010This is my prob:I have a textbox in which I have a path where a certain document has to be saved. Now when I select something from combobox1 I want the textbox to be updated so the new path becomes: (Old path & "" & Combobox1.text)
View 9 RepliesWPF Trouble Updating A Textbox From A Variable
Jun 15, 2012Using WPF, and VB.net, I want to update a textbox in a textblock with the current date and time. I use a timer, and it seems to be firing, and setting an object property to "Now".And I am using iNotifyPropertyChanged.All I get is an empty textbox with no data in it. Can you help? Maybe my context is off? [code]
View 4 RepliesRead Textbox And CheckBox For Updating Database
Mar 9, 2011Read Textbox and CheckBox for Update Access 2003 Database
My Code is:
Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=ChemiBas.mdb;Jet OLEDB:Database Password=1"
Dim con As OleDbConnection = New OleDbConnection(cnString)
Dim command As New OleDbCommand
command.Connection = con
[Code] .....
Scroll The Textbox (txt_folderactivity) After Updating The Text Box?
Jan 17, 2012I have a simple Sub:
[code]...
It's job is to scroll the textbox (txt_folderactivity) after I update the text box with a new entry. The textbox is multi-line, so this keeps us at the bottom so we can see the new stuff. This sub gets called whenever any of the other subs add a line for things like file rename, deletion, etc. based on file system events (using Public watchFolder as FileSystemWatcher).I had a crossthread issue with just updating the textbox, but I wrote in a Delegate /Invoke for that and it works fine (something I found online earlier this morning), but now I have another issue and I'm not sure how to work it.
I'm getting a crossthread issue with this specific Sub specifically at the SelectionLength, and I'd like to set it up with a Delegate and Invoke and such, but I don't know how specifically. I've searched and read, but I don't get it. Do I need a seperate invoke on each of the 3 lines, or is there an overarching Invoke for the whole bit I'm still new-ish to VB and I don't know how to proceed. I've read some MSDN pages and stuff, but they aren't explaining what the problems is really and what I need to do (or prehaps I'm just not getting it).
Searching Database And Updating Textbox In A Form?
Apr 27, 2011I am developing a Point of Sale application and I have a form for the selling interface where i would like the user to enter an Item code (stock code) and based on the entry search for the record in the database. After Searching i would like the data of Item Code, Item Description and Unit price displayed on the form using textbox control.
(I am using Visual Studio 2010 - Express Edition)
I have tried using the following code but its not working
Private Sub txtItemCode_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtItemCode.TextChanged
Dim db As DataRow
[Code]....
Textbox Text Not Updating While For Each Loop Running?
Mar 8, 2012Windows Forms, VB application... Forgive me in advance for this very elementary question but I am overlooking something really simple here. I would like to have a label show the current value of a variable as the for each loop runs.. I created a very simple Button Click event to figure out where its failing. As it is right now the value does not display until after the for each loop finishes running, which it should actually display the counter value each time it runs through... I know this is possible and really simple because I did it years back but for the life of me cant figure out why I am missing the bar as it should constantly update the label to reflect that?Test Sub is as follows:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim counter As Integer = 0
For x As Integer = 1 To 200000
[code]....
VS 2010 - Stop Textbox From Updating After Backspace
Nov 25, 2011I have 3 text boxes that update with each other. One the user inputs the text, two the text is used for translation and instantly deleted, and three displays the translated text. If I need to backspace the code updates the translation adding double of each letter I delete. I need a way to skip all of the application code every time the backspace key is held. My current code here (full dictionary cut to save space).
Public Class Form1
Public Sub RichTextBox3_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles RichTextBox1.KeyDown
If e.KeyCode = Keys.Back Then
[Code] .....
Grid Data Not Updating Based On Text Typed In TextBox?
Dec 11, 2009I have this lambda expression Me.SubcriperGrd.ItemsSource source.Where(Function(p As subscripers) p.Navn Like navn)
where i should filter the grid data based on the typed input in a txtbox
It returns the result when i type the full name but it doesn't filter the data as i type along in the txt field
Updating Child Collection Of POCO (adding/updating/deleting) In Entity Framework 4.1?
Jan 25, 2012I have a webpage with a form that is used to edit some object. This object contains a Collection of other objects defined like this: Public Overridable Property Employees As List(Of Employee)
On a form I can delete an employee, add a new one or modify existing one. When I click save new values are sent to the server. On a server I check if the user exists. If exists then I modify its values, if it does not exist then I add it. All employees that exist on the server and were not sent are marked as deleted (State changed to EntityState.Deleted). I try to use the following code (dbCollection = database entities, newCollection = collection sent from the form):
[Code]...
This code does not work, because changing to EntityState.Deleted removes the object from collection, and for each loop breaks, since the collection is modified...I know that I can overcome this problem by using a for loop or adding objects to delete to some other list first, but I hope maybe there is a pattern that would make my code nicer.
Security - Textbox On Form - User Inputs Data ( During Runtime ) Data Remains In Textbox For Good And Textbox Becomes Read Only ?
Jan 8, 2010Is it possible to have a Textbox on a form that when the user inputs data, ( during Runtime )that data remains in the Textbox for good and the Textbox then becomes read only ? Is it also possible to make it so that the CD with the programme on, is in the PC when the programme is being used. Perhaps writing the Textbox data back onto the CD ?
View 1 Replies.net - WP7 - Updating A Listbox?
May 15, 2012I've finally got around to starting windows phone dev. I'm not very good at it yet, but anyway, I hope you guys understand what I want to do here.From what I've learnt from other programmers, an ObservableCollection can be updated in live time whilst it is databound to an object, such as a listbox. All changes to the ObservableCollection will cause the UI of the object it's databound to update it's items.
So what I'm trying to do, is download a file from my server, parse it with json, then update the ObservableCollection with the new data. However, the webclient doesn't seem to be downloading the new data until the app is re opened!
[Code]...
.NET Progressbar Not Updating?
Apr 19, 2011I am using a progressbar control in a splash screen.
In my code I am updating the progress bar value with each step -
In Form_Load of the main (hidden) form:
frmProg.UpdateProgress(10, "Checking Connection String")
CheckConnectionString()
frmProg.UpdateProgress(20, "Checking Crystal Reports OCX Files")
CheckOCXVersions()
[Code]....
Is there some event I can use to find out when the progress bar has finished redrawing?
Database Is Not Updating?
Feb 14, 2012There is something wrong with my codes. I don't know why it isn't updating the records.If I activated the line dt.Rows.Add(newrow) it will just create an error on da.update(dt) line QuoteThe changes you requested to the table were not successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again.But if I deactivate that line, no errors will be occurred but the record won't update.
Here is my code
Dim dt As New DataTable
Dim ds As New DataSet
ds.Tables.Add(dt)
Dim da As New OleDbDataAdapter
[code]....
DataGridView Not Updating SQL
Jan 31, 2011I have a data grid view bound to a sql server table. What I am trying to do is have changes made in the dgv update in the sql table. I tried to use the Update method of the table adapter but get the following error.[code]....
View 4 RepliesDataGridView Not Updating?
Jul 26, 2011I have a datagridview with a datatable as datasource. If I add a row to the datatable, then the datagridview is not showing the contents.
grdChannel1.DataSource = CreateTable(colChannel)
Private Function CreateTable(ByVal colChannel As MyCollection(Of Channel)) As DataTable
'Create table and add collection into
[code]....
I have 2 row counts if I check the the row counts of the datagridview in the debugging mode.
Dictionary Keeps Updating Even When I Don't Want It To?
Mar 15, 2010I have a dictionary of key=string and value=datatable. I use a key to retrieve a datatable and assign that datatable to a new variable. Then I make some updates to the variable. However, I find that the dictionary itself is being updated even though I'm only updating the variable. This causes significant issues when I try to reference the dictionary later. How can I set up my dictionary so that it won't update when I use a value?
dim dt1 as datatable
dt1=dictionary(key)
For row=0 to dt1.rows.count
dt1.Rows(row)(4)=dt1.rows(row)(4)/2
Next row
'at this point, when I look up dictionary(key), the value I get shows all of the original values divided by 2.
DSN Checking / Updating?
Apr 24, 2009I just want to add a DSN if it does not already exist. I am looking at the registry and I know the DSN exists but this code returns False consistently.If(not isnothing(My.Computer.Registry.CurrentUser.OpenSubKey("SOFTWAREODBCODBC.INISQL_Finance", True)),True, False) Once I get past this the next step is to add the DSN if needed.
View 4 RepliesIDE :: Possible To Updating Datagridview?
Jul 18, 2009I have a datagridview which i filled with this code:
Dim daProd As New SqlDataAdapter
m dsProd As New DataSet
cmd = New SqlCommand
[code].....
IDE :: Progress Bar Isn't Updating
Oct 4, 2011I'm using VS2010 (VB), Framework 4.0 and although I'm incrementing my progress bar value between steps, the progress bar only shows the initial value. I've set the minimum and maximum properties and the initial value, but no luck. Here's a brief summary:
[Code]...
LINQ To SQL Not Updating Db?
Aug 31, 2011I've read through the posts here and can't find any eureka answers so here's what I have.Linq to SQl not propagating a change back to the db.Here's my code. Does anything stand out?The call to dc.GetChangeSet shows 0 changes. What am I missing? I can see the new values from "setting" being set to the cs object properties. SettingID is a primary key in my table and shows as PK in the dbml so that's not an issue.
[Code]...
My BindingSource Not Updating
Jun 6, 2010I'm trying to display a DataTable using a DataGridView and a BindingSource as such: (assuming the DataGridView1 and BindingSource1 has been added using the IDE)[code]...
View 3 RepliesMy Database Not Updating
Jul 27, 2011Whenever I try to update a row in my database, it works, but as soon as I restart the application, the changed information resets.[code]....
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