Retaining Value Of A Variable After Application Is Closed And Reopened?
Aug 6, 2009how do you save the value of a variable for later if the application is closed and reopened in winforms, vb.net?
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Preserve State Of Textbox And Checkbox When Application Is Closed And Reopened?
Oct 19, 2011Using VB.Net, how can I save values from a textbox and checkbox when the application is closed? When the user opens the application again, the textbox and checkbox should be filled in with the same values as before.Do I have to save these values in a database, or what other options are there?
View 3 RepliesVariable Not Retaining Value When Exiting Sub
Jul 14, 2011Why a public variable is not retaining it's value when exiting a subroutine.
I want to search through an array and if a condition is hit then the subroutine exited (thereby holding the index value of a variable named MarkerNo)[code]...
[VB 2010] Destroying Objects And Retaining Application?
May 22, 2012I have written a program to add a timestamp to a data sheet which had the time in seconds at which a sample was taken. The sampling was done every 0.1 seconds i.e 10 Hz sampling rate.The code I wrote enables one to select a file to which the time stamp must be added, and then runs a macro from excel when you click "Add Timestamp".
I am having a problem destroying the objects though so that they don't end up hanging around in the background. If Excel is already open I do not want it to close at the end of the program, I want Excel to simply return to its state before the application was run in order to prevent losing data on another unrelated excel task which may be open. The macro which is called closes any sheets which it opens. The other problem I am having is that if the program encounters an error there are a number of Excel objects floating in the background. My code is posted below.
Imports Microsoft.Office.Interop.Excel
Imports System.Runtime.InteropServices
Public Class Form1
[code]....
Pass A Variable Even When The Form Is Closed?
Dec 15, 2011I have two forms with a variable (x) that is set by a trackbar on the second form.
View 3 RepliesSaving The Value Of A Variable When Program Is Closed?
Feb 8, 2012I am looking for an easy way to save the value of a variable when a program is closed. And then when it is reopened the variable has the same value as what it was previously when the program was closed. The variable has an integer value.
View 2 RepliesMDI Application Getting Closed?
Feb 21, 2012I have the following snippet in the load event of a MDI child:
Try
foApplRole =
New ApplRole
ugRegionUser.DisplayLayout.Bands(0).Columns(
"User_ID_C").ValueList = uddUser
[Code]...
C# - Calling A Method In A FACTORY Class When Application Is Closed / Disposed Without Using Application's Dispose() Method
Mar 28, 2012I am indifferent if you are a VB.NET or C# or other .NET developer. I have a FACTORY class like the following:
[Code]...
Close Application When Any Form Is Closed?
Jun 8, 2009I have multiple forms in my VB.NET application. How do I make it so that any form I close will terminate the application?
View 3 RepliesGet A Message On The Screen That X Application Is Closed?
Feb 16, 2009I want to develop an application that gathers event messages of windows and show them on the screen as messages. For example I want to get a message when I receive a new email or when I close an application I want to get a message on the screen that x application is closed.
View 1 RepliesIcon To Disappear After Application Is Closed
Jul 31, 2009My winforms app puts a little icon in the taskbar next to the clock while it's running. how do i make it disappear when i close the program in vb.net?
after the application is closed and i put my mouse over it, it disappears.
Keep Data When Reopened?
Oct 9, 2009Does anyone know if it is possible for data which a user has typed into a text box can remain when the application has been completely close and reopened again, and if all of the new windows can also reopen with the user inputted text.
I have been spending hours trying to work out how to do it but can't find a way!
Perform Some Work When An Application Is Closed From Taskmanager?
Dec 5, 2011In my application i want to perform some work when an application is closed from taskmanager.
View 11 RepliesStore/save Permanently, Even After The Application Is Closed?
May 17, 2009I'm trying to figure out how to do this as I'm not sure what's the proper way of doing this.
I've got several strings that I want to store/save permanently, even after the application is closed. How should I proceed? Do I read or write from a textfile?
Can't Add New Records To A Reopened Dataset
Jul 16, 2009I'm following a tutorial using serialization/saving records.I can make records, display them ok in a datgridview and then save them ok using serialization. Then I can reopen the programme and reload the dataset from the deserialised file, and show the records ok [code]....
View 1 RepliesCan't Add Records To A Reopened Dataset
Jul 16, 2009I'm following a tutorial using serialization/saving records. I can make records, display them ok in a datgridview and then save them ok using serialization. Then I can reopen the programme and reload the dataset from the deserialised file, and show the records ok - but I cannot add any more records to the datagridview.
Here is my code:
Imports System.IO
Imports System.Runtime.Serialization
Imports System.Runtime.Serialization.Formatters.Binary
[Code].....
Prevent The Application Is Closed, When Close The Server Socket
Jan 12, 2012I created a server-client application using the asynchronous socket. I found the problem when closing a socket on the server, applications so closed. The procedure that I do to close the socket server is:
Terminate the listening thread. Close the client socket is still connected to the server. Close the server socket.
How to prevent the application is closed, when I close the server socket?
Protected Friend Sub CloseServerSocket(ByVal IPAddress As IPAddress, ByVal socketPort As Integer)
' Terminate the listening thread.
[Code].....
VS 2008 Check If All Forms Of An Application Has Been Closed/disposed?
Jan 20, 2010How do you check if all instances of forms (or simply all forms of an application) has already been closed?
View 10 Replies.net - DataReader Not Closed When Connection Is Closed, Consequences?
May 31, 2011for example i have this code :
Sub Month()
Dim Conn As New Data.OracleClient.OracleConnection
Conn.Open()
Try
Dim Cmd As New Data.OracleClient.OracleCommand
With Cmd
[Code]...
What will happen to the datareader when the Connection is closed ( Conn.close)
Will the Cursor that is used by the datareader be freed ? or will it stay open ?
If the cursor that is used by the datareader is still open , when will it be automatically closed ? or should i just closed it manually ?
Will it cause the dreaded "ORA-01000: maximum open cursors exceeded" ?
Textboxes And Labels Contain Wrong Text After Saved And Reopened
Aug 8, 2009Hi,
I have a program that has over 100 labels and over 40 textboxes. I was using the code below to save the text. However, when I open it, some of the text is in the wrong spot (for a label or textbox) and some of the text that shouldn't have been saved is. Is there a way that I can get all these labels' and textboxes' data saved? I would like to stick to the code somewhat if thats possible. I may be looking in the wrong direction too as I am very new. Thank you.
Private Sub SaveAsToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveAsToolStripMenuItem.Click
Dim myStream As Stream
Dim saveFileDialog1 As New SaveFileDialog()
saveFileDialog1.Filter =
"txt files (*.txt)|*.txt|All files (*.*)|*.*"
saveFileDialog1.FilterIndex = 2
saveFileDialog1.RestoreDirectory =
True
If saveFileDialog1.ShowDialog() = DialogResult.OK Then
myStream = saveFileDialog1.OpenFile()
If (myStream IsNot Nothing) Then
Dim myStreamWriter As StreamWriter = New StreamWriter(myStream)
myStreamWriter.WriteLine(txtName1.Text.ToString)
myStreamWriter.WriteLine(txtName2.Text.ToString)
myStreamWriter.Flush()
myStream.Close()
End If
End If
Private
Sub OpenProjectToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenProjectToolStripMenuItem.Click
Dim myStream As Stream = Nothing
Dim openFileDialog1 As New OpenFileDialog()
openFileDialog1.Filter =
"txt files (*.txt)|*.txt|All files (*.*)|*.*"
openFileDialog1.FilterIndex = 2
openFileDialog1.RestoreDirectory =
True
If openFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
Try
myStream = openFileDialog1.OpenFile()
If (myStream IsNot Nothing) Then
Dim myStreamReader As StreamReader = New StreamReader(myStream)
txtName1.Text = myStreamReader.ReadLine()
txtName2.Text = myStreamReader.ReadLine
myStream.Close()
End If
Catch Ex As Exception
MessageBox.Show(
"Cannot read file from disk. Original error: " & Ex.Message)
Finally
If (myStream IsNot Nothing) Then
myStream.Close()
End If
End Try
End If
Textboxes And Labels Contain Wrong Text After Saved And Reopened?
Nov 3, 2011I have a program that has over 100 labels and over 40 textboxes. I was using the code below to save the text. However, when I open it, some of the text is in the wrong spot (for a label or textbox) and some of the text that shouldn't have been saved is. Is there a way that I can get all these labels' and textboxes' data saved? I would like to stick to the code somewhat if thats possible.
View 25 RepliesState Is Not Retaining In Checkbox?
Sep 8, 2009There is a check box in my webform. whenever i tick it ..and click on back button it will not retain its state ..when i comeback using the next button to the same page.Note: view state is enabled in the control There is no code in the page load event
Code below:
Protected Sub chkBx_SR_wu_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles chkBx_SR_wu.SelectedIndexChanged
[code].....
.net - Datalist Not Retaining Values On Postback
May 20, 2009I have a datalist control that is not retaining it values during postback when the control causing the postback is outside of the update panel that the Datalist resides in. I have verified that viewstate is on for that usercontrol as well as all its parent controls. My basic situation is that I have a Datalist that contains a user control on a page. When the user selects several rows in a grid and presses a button, a datatable is filled on the backend and assigned to the Datalist which has its item template set to the UserControl.
On ItemDataBound I set specific properties in the control which customize the messages on that control to the specific item. This is then popped up using the AJAX Control Toolkit Modal Popup[ Extender. When the user presses Save the whole page posts back. Data is collected from the user controls and saved to the DB and the popup disappears. The issue I am currently having is that the DataList has 0 items when the save button is pressed instead of the appropriate number. THis issue just started appearing after we upgraded from .NET 2.0 to .NET 3.5.
Forms Retaining Values After Closing
Jan 4, 2011Throughout our program, forms are opened like this[code]...
The problem is that when forms are closed, they seem to not really be closed, only hidden - if I add some text to a textbox and close/reopen the form, the text is still there, rather than the textbox being cleared like normal. This is presumably because the form always uses the same instance.
Is there any easy way to fix this other than going through the entire program and creating a new form instance for every ShowDialog() call (there are hundreds)?
Retaining All Selected Items In All Cases
Jan 25, 2009I can't remember very well the instances where my selected items has disappeared as if I did a "Reset ToolBox", the last time I remember was when I installed the Service Pack early this year. But last year I think it has been reset frequently and I find it bothersome to reselect all those items again and again.Is there any configuration that I could set so that my selected items are safeguarded, that is they won't be removed no matter what?
View 4 RepliesArray In Structure Apparently Not Retaining Data?
May 6, 2012I have a structure with 6 arrays inside it that is serializable so I can save the arraylist of them to a file and load them from the file. This part works.
When loaded from the file the data from a single specific record is populated to a listview control, this works on form load. The user can then select different records and in theory display the data in them (specifically the stuff in the arrays).
Displaying the data works as I'm editing the data, and on first load of the form and displaying the "default" record from the structures. Any other time (trying to switch between records during editing or after loading) the record is pulled (as shown by stepping through the code line by line) but the data in the arrays in the structure and only the data in the arrays is missing.
I've gone through all the code that runs and there is nothing that overwrites the array data in the records between displays so I'm at a complete loss as to why this data is going missing.
Below is the structure and the code.
Defined in a Module so as to be accessible when needed in several places through the program:
Public JBonus As New JobBonuses
Public JBonuslist As New ArrayList
On load to set dimensions to the arrays:
JBonus.Str = New Integer(999) {}
JBonus.Agi = New Integer(999) {}
JBonus.Vit = New Integer(999) {}
[Code].....
Asp.net - Checkbox Within Datagrid Retaining Checked Value On Postback?
Feb 24, 2011I have a project in VB.NET which is working fine which essentially has a Datagrid that has a TemplateColumn included which is a column of Checkboxes. The code to declare the datagrid is here...
<asp:datagrid id="dgDates" OnItemCommand="gridEventHandler" BorderColor="Black" BorderWidth="1px"
CellPadding="3" runat="server" AutoGenerateColumns="False" HorizontalAlign="Left" AllowSorting="True"
[Code]....
everything you see sbove is working perfectly fine...in the sense that when I click one of the checkboxes, the page_load fires, the gridItemDataBound fires on DataBind() and when all is done, the checkbox retains the value that the user clicked the checkbox.
With all this exact same code converted to C#....the events all fire in the same order, but the checkbox selected value always clears...
Change Colors While Retaining The Look Of A Windows 7 Progress Bar
May 16, 2011how I can make a progress bar change colors while retaining the look of a Windows 7 Progress Bar. What I mean is, default it show the green. However, setting backcolor and forecolor does not affect the progress bar while XP styles is enabled.
What I am trying to do is make the progress bar the red progress bar if an error is encountered. I have the error solution set up, I just need it where the progress bar turns to red if the event of the download is stopped by internet connection being disconnected.
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Dataset Not Retaining Columns Added To It Vb2008?
Jul 29, 2009I add columns to my dataset but when start my application again columns are not there
[Code]...
Excel - Retaining Array Values Between Procedures
Feb 17, 2012How do I effectively declare a Global Array which I can access the values of that array from any procedure? I have a Userform from which I will call various sub procedures depending on the actions performed on the useform. I have one procedure (Procedure1) where I have set up a multidimensional array and input values to it. I have another procedure (Prodedure2) where I want to access the values in the array - I DO NOT want to pass the array values directly from Procedure1 to Procedure2.
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