Make A Data Refresh / Reload Work
Aug 4, 2009
I've spent several hours reading through posts trying to make a data refresh/reload work and I can't.After adding a new record to the underlying table (using MSSQL) I need the datasource for that table to show this new record. My understanding is that using BindingSource.ResetBindings(False) is supposed to fetch a ew set of records and also update any control bound to it (ie ComboBox).Neither of this is happening. The new record is not there when using the navigator. The ComboBox does not show the new values either.It seems that this would be a simple basic command in VB, alas, I can't find a way to do this cleanly.I'm using SQLSERVER 2005 and VB.NET 2005. Controls are all bound to datasources...
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Jan 10, 2010
How can i reload/refresh the same form again without losing the data stored along with the form?
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Aug 6, 2010
When I create a new record by submitting an .aspx page the new record is not showing up. I have to navigate away from the page and back to it for the new data to show.
How do I refresh the data up reload??
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Mar 11, 2010
How can i reload/refresh the same form again without losing the data stored along with the form?
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Feb 16, 2012
I have a windows form with a DataGridView control.I bound it into an attached DB file (.mdf).I perform insertion by generating a dynamic Insert statement. I then pump this sql statement into a SqlCommand object and perform ExecuteNonQuery() method. All of these is performed by handling a Button click event. The button and the gridview is located on the same form.
Public Sub InsertRow(ByVal param1 As String, ByVal param2 As String, ByVal param3 As String)
Dim strConn As String = (the connection string)
Dim sqlConn As New SqlConnection(strConn)
[code]....
After the code execution, the DataGridView is not updating (remains intact). I have to exit the form and reload it to have the updated gridview.For certain reasons, I can't use DataTable object.But I would like to have this gridview updated everytime I run the insertion.
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Mar 2, 2011
I have several labels that bind to my query adapter and I need to update (not TO the database but FROM the database) as data changes on database by another application.I only need to either check data on my database that changed or reload the data.I'm using data set, table adapters and tableadapter.queryadapter to query data (tantalization) from my database.all I want is to refresh/ update this values on my controls in my windows form I'm using VB.NET on VS2010.
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Jul 25, 2009
Not sure if this is the rite place for this cause im new but i wanted to now how to automatic reload a page every 2sec and make it to a button (ex: hit start then every 2sec page reloads).
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Mar 3, 2009
In my SW there is a main form, inside this form there is a several controls (user controls), in any given time only one control is visible to the user, all others controls are: visible = false.
My question is how I execute several code lines when the control is shown again?
the only method I know is on the load event, but since the control is allready loaded I cant do that
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Apr 14, 2011
I have a long running process running in a backgroundworker, and want it to report progress to the user, and update a checked listbox as the items are discovered. The reportprogress is called, and the statements executed (placing a break in the reportprogress routine), I can see the control valuse change, but the change is not reflected in the dialog. Here is the reportprogress routine I'm using:
Private Sub BackgroundWorker2_ProgressChanged(ByVal sender As System.Object,
ByVal e As System.ComponentModel.ProgressChangedEventArgs) Handles BackgroundWorker2.ProgressChanged
Me.newlabel.ForeColor = Color.Cyan
[code]....
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Apr 12, 2009
I would like to know that how am i going to validate the data inside a currency field to see whether its format is correct or not ?How am i going to reload the data when an action is canceled ? For example, when i click the cancel button, a message box will pop up and ask the user whether he/she want to cancel the action. When the user click yes, the action will be cancel and the data inside a database will automatically display inside the text boxes, as if everything is start from the beginning
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Sep 22, 2010
As you read this, though I have pretty good experience in C++ and Java, eep in mind that I am a complete beginner when it comes to VB. :)Here is one idea of what I want to do:
Option Strict Off
Option Explicit Off
Imports System
[code]......
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Apr 18, 2012
I'm still playing with my program that has multiple RichTextBoxes. What I want to do is to be able to save the data in all these boxes (only about 10 characters max in each box) to a simple text file and then reload the saved data into the exact boxes they came from at a later date.
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Oct 26, 2011
I have a bit of a tricky scenario. It consists of some partial problems for which I have individually found solutions, but I couldn't find anything that makes it all work together smoothly.
-Upon selecting an item in a datagrid, a new page loads with the details regarding that entity.
-The entity represents a product that can have any amount of variants (such as a t-shirt's color or size)
-I dynamically add dropdownlists to this detail-page that represent these variants (there can be any amount of variants, and each variant can have any amount of different values, each value or combination or values from different variants representing a unique product entity)
-Upon selecting a different variant in a dropdown, a delegate is called that will change the session variable to the productId associated with the selected variant and a postback is fired that will reload the page with new data based on this productId
The problem: the postback is fired BEFORE the dropdownlist's (OnSelectedIndexChanged) delegate is called. Since this delegate defines the productId in the session, the new to-be-used productId isn't known at the time of postback.
Result: loading the correct data in the page is always delayed by one postback. Each time I change the selected index of any of the dropdowns, the page is loaded with data based on the session variable that the PREVIOUS OnSelectedIndexChanged delegate of the dropdown set.
I have a LoadData() method that sets the values of all textboxes, fields, labels etc. based on the productId stored in the current session. This method is called on Page_Load.
Private Property CurrentProduct As Product
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
LoadData()
[Code] .....
It seems that I haven't been completely clear on what does and doesn't apply to this scenario regarding Page Lifecycle.
1) My dropdownlists are added dynamically, which works fine on the first page_load.
2) The content of the dropdownlists is defined by what entity's details i'm loading on the page.
3) What entity's details I'm loading on the page is at first(not-postback) defined by the product I selected in a gridview in the previous page.
4) At postback, this entity is based on a sessionvariable containing the id of the entity.
5) This session variable is defined by what item in the dropdownlist I select.
6) This dropdownlist dissapears after postback since it's not defined on the page, but dynamically. So is the event.
So my guess would go towards some clientside script that stored the selected value before postback, but then I would be clueless on how to get that variable to the server since the logic that retrieves the entity is in the business logic layer which is far away from this page..
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Feb 2, 2011
I have an application that requires data be entered, and after entering, a button is clicked to process that data. Clicking the button works just as it should--the data is processed properly. In constructing a test module, I provide a set of data values, followed by:
btnWhatever.PerformClick()
Nothing happens. I have used this syntax for years, and it has always worked flawlessly. I have triple checked everything else and isolated the problem to the failure of the PerformClick(). The PerformClick() is in a test subroutine that does nothing but fill textboxes and labels with default data, then calls the PerformClick() on the button to begin processing. Again, the button works fine, the data is entered as it should be, but the PerformClick() does not fire the click event.
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Nov 13, 2011
'Declare the price rate per night
Const decNightly_Rate As Decimal = 350D
Private Sub btnCalculateCharges_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculateCharges.Click
[code]...
I am trying to make a hospital form where the user inputs data for a hospital bill. I have to create three functions: CalcStayCharges, CalcMiscCharges, and CalcTotalCharges. I do not know why this code won't work.
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Aug 15, 2011
'Informs you forgot email.
If TextBox1.Text = "" Then MsgBox("Forgot E-Mail")
If TextBox1.Text = "" Then Me.(PLEASE TELL ME WHAT TO PUT!
[code].....
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Dec 26, 2010
I am writing an ap that monitors a website for changes. The website is for reserving campsites and I need to know when they change the date we can book a reservation. The date can change at midnight or any time during the day. It is completely random.I start the program launching a webbrowser with the URL. I have an inputboxbutton that prompts for the text to track for change. You paste the text in there and then the ap is supposed to wait for x minutes then refresh.I have a refresh button that works perfectly. Here is the code for it:
Private Sub Button_Refresh_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button_Refresh.Click
WebBrowser1.Refresh()
[code]....
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Sep 1, 2009
I execute a stored procedure which updates data. Is there a way to refresh the data in a datagridview to match the database's data.
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Apr 29, 2010
got question on using windows forms in visual
what i have going on is on one form i have a calendar that is for the month of may. when you click on may 1...it opens a form with some combo boxes and a gridview that displays the choices from the combo boxes.
my question is this..
can I just link all of the other 30 days in may to go to the same form or do I have to make 30 duplicate forms LOL...i know it is a kinda silly question but I really dont know.
It would be a travesty if the user were to click on may 2...and get a form all filled out from may 1...*blush*
Secondly if i were to have a calendar control on the form that may 1 is pointing to (at the moment I dont) how do I get the calendar contol to reflect that it is may 2 and not may 1??
this is not for a web site it is for a tire shop here in town, and it is the first project that I am doing..so it is kind of important to me.
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Jun 15, 2012
I want to have a button on my form that will close the form itself and then reopen itself essentially refreshing the form. i have read several posts about this topic and most people say use the hide and show functions but i don't want to hide the form i want to close it. I have also tried to use the form1.refresh thing and that doesn't work either.
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Jan 27, 2011
I have to Repositon many TextBox in a form, but when I use Refresh() to invalidate its client area, that TextBox's Text will be disappeared until I focus to that TextBox. Are there any way to make the Text appear immediately after Refresh?
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Jun 4, 2010
Im trying to make a frame on a website refresh with a new src.
This is my function in a seperate module PHP
Public Function StatusRead()
If Form1.WebBrowser1.ReadyState = WebBrowserReadyState.Complete Then
Dim theStatusCollection As HtmlElementCollection = Form1.WebBrowser1.Document.GetElementsByTagName("frame")
[Code]....
The flag is declared at class level in my form1.vb and the reason for the flag is to stop the frame endlessly refreshing
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Jun 5, 2012
How do I make webbrowser1 refresh a certain amount of times?
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Feb 11, 2012
I have a simple translating program i working on in vb 2010.I have a combobox and a textbox and a button. What i have so far is when you select the option in the combobox the textbox and button will appear. then when you type something it replaces each letter with something new, in the same textbox.what i cant figure out is how to make it so where if i click the button again it translates the replaced letters back to the original ones.
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Nov 25, 2008
how i can make the WebBrowser1 refresh an infinite amount of times really fast and with a click of a button?This is the code i have right now:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
WebBrowser1.Refresh()
End SubThe above code only makes the webBrowser1 refresh 1 time, but i want it to refresh infinite times with a click of a button.
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Aug 13, 2010
There is a button called "Data Refresh". Once user clicks it, a few jobs will start:truncate 5 tables in local SQL server, insert data into 5 tables in local server from remote SQL server. It will take about 15 seconds.How to add progress bar with data refresh?
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Jan 24, 2011
my exce'sl file has some data.i can open file from vb
how can i refresh data all 30 minutes from vb
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Oct 28, 2009
I have a program that has a main form, that stays on all the time.It does not get closed at all, it's the main form for the program. I have this procedure running on loadup of the form.[code]...
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Feb 3, 2012
I have combobox binded to binding source (NastavniciBindingSource). I wan't to refresh combobox when I add new data.
Dim str As String = InputBox("Enter name:")
Me.NastavniciTableAdapter.Insert(str, "", "", "", "")
Me.Validate()
Me.NastavniciBindingSource.EndEdit()
Me.NastavniciTableAdapter.Update(Me.StudentDSET.Tables("Nastavnici"))
' here I need the code to refresh combobox
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Oct 13, 2011
I'm not sure if this is a simple problem or not but it's frustrating me to no end.
I'm using the following code to add my data to the database, and then this to refresh. [code]...
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