Value Not Saving Properly
Feb 15, 2012Value not saving properly [code]...
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Datagridview :: Saving Changes Not Working Properly?
Jan 25, 2010i have a windows forms app which displays a bunch of records from my sql database. when i modify records in the grid and click on save, all changes are saved EXCEPT the changes made to the currently highlighted row. they aren't written out the database until i exit the actual program, despite clicking on my save button.so for example, if i change 5 different records in the grid, and click on save, and then click on refresh to reload the data from the database, 4 out of the 5 are saved correctly, but the row that is currently highlighted (meaning, the last row i changed) still has the old data.My code for the save button look like:
Code:
Private Sub TerritoryBindingNavigatorSaveItem_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TerritoryBindingNavigatorSaveItem.Click
[code]....
Columnorder Saving Class Does Not Work Properly?
Feb 23, 2012I found a class that saves column order and column width for a list view but i cant get it to work properly.
Public Class cListviewHelper
Private Declare Function ListViewiColumnOrder Lib "user32" Alias "SendMessageA" (ByVal hwnd As Integer, ByVal Msg As Integer, ByVal wParam As Integer, ByRef lParam As Integer) As Integer[code].....
It saves the right number of columns but not in the order they are.It always saves them like this in the registry "0,1,2,3,4,5,6"
How To Properly Open A Image Using Bitmap Class And Dispose It Properly
Jun 22, 2010I am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
VS 2010 Saving Data From Applications By Saving A Text File Via A Stream Reader As A String
Feb 12, 2012Currently I am saving data from my applications by saving a text file via a stream reader as a string. I have come to a problem. In my current application, I have an array of the following structure:
[Code]...
Advanced WebBrowser Favorites Saving Saving A DropDownList?
Apr 16, 2011I have a problem. I'm working on this advanced web browser with my friend, and we made a favorites feature. So, it works and all that, but, after I close the executable file, it doesn't save anything!
Ex:Starting Up, adding Google as new favorites, then closing the browser. Starting up again, 1 hour later, but there's no Google Here's what I put for saving the favorites (please do not steal the code Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[Code]...
[2008] Rewrite Class (Saving TreeView Data) For Saving Listview Data
Mar 9, 2009rewriting a class I use for saving Treeview data to a XML file for use of saving ListView data I can't really figure out the rewrite, I'm stucked, unfortunately Listviews seems to be a big problem for me in general.
Option Strict On
''' <summary>
''' The TreeViewDataAccess class allows the nodes within a TreeView to be
''' persisted to xml for later retrevial.
''' </summary>
[Code]....
.net - How To Use Bitvector32 Properly
Dec 23, 2010I have
Dim bv As New Specialized.BitVector32(25)
Dim sb As String = "0b" 'I resisted the urge to use a stringbuilder
For i As Integer = 31 To 0 Step -1
[Code]....
I only wanted to use BitVector32 for bit flags and I wanted the output to be
0b00000000000000000000000000011001
How do I set this up properly?
Using The 'And' Operator Properly?
Apr 8, 2010In the project�s btnReadNumber click event handler, replace the code in the try section of the try/catch block � the two if statements and the unconditionally executed code � with one if-else statement that performs the same tasks. Use the And operator to write the if-statement�s condition.What I don't understand is how am I supposed to use the 'And' operator so that when I insert a number between 32-16384 in the text box it'll allow it to go through and at the same time not allow any numbers lower than 32(lower_bound) and higher than 16384(upper_bound) to go through.I've use the 'Or' operator and that was simple, but with 'And' I'm not understanding it.Remember it has to be with the 'AND' operator. I bold the area where my problem is at. It's obviously not the right answer, but that's where I was stumped.
Dim sum As Integer = 0
Const upper_bound As Integer = 16384
Const lower_bound As Integer = 32
[code]....
*.txt Filter Not Working Properly?
Mar 14, 2011In my word processor I have an 'Open' option on a menu strip. Here is the code for it:
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click
With ofdFile
.Title = "Select a file to open"[code]....
For some reason when I press the 'Open' item and open the ofdFile dialog box .txt files do not appear even when I have the 'Text Files' filter selected However, when I use the 'All Files' filter they appear. And the 'HTML Files filter is also working properly.Why are the .txt files not appearing when I use the Text Files filter?
.NET 2.0 .settings Not Working Properly?
Oct 18, 2011I don't even know where to begin describing this. I have a project, that uses settings, for some paths, settings that I retrieve with the My.Settings. function.In my laptop, when I change the .exe.config file, the settings are updated accordingly, but when I try that on the production server, it just shows the default value used while compiling.
I tried changing the solution configurations to debug and other custom configs with no effect.Tried to use the same folder copied and pasted without version control, still the same result.Tried a co-workers laptop, by using the last svn revision, it works there too. But on neither of the servers works.
ArrayList Indexes Not Set Properly?
Aug 25, 2010I have some basic code to fill items in an ArrayList as follows:
Dim intSteps As ArrayList = New ArrayList()
elect Case Session("type")
Case 1
[code]....
Asp.net - Boolean Not Setting Properly?
Mar 3, 2011I have the following code in an Asp.Net user control:
Me.pnlAddComment.Visible = MyBase.Associate.IsAgent()
Me.lblRating.Visible = Me.pnlAddComment.Visible
Me.Rating1.Visible = Me.pnlAddComment.Visible
Now when I run this code, the value of MyBase.Associate.IsAgent() is true. Yet at no point is Me.pnlAddComment.Visible evaluating to true. When I output the results as Response.Write statements, it shows IsAgent = True, pnlAddComment.Visible = False. When I run it in debug mode, placing the line break on the second line above to allow the set to occur: I put the mouse over IsAgent and it displays "True"; I put the mouse over pnlAddComment.Visible and it displays "False".
A Co-worker suggested that it's possible that it's Panel.Visible black box code in the getter that allows the assignment to occur but returns false because some parent object is set (at that point in the code execution) to False. I've reviewed the parent objects and at no time do any of them appear to be set to not visible.
If this were a reference type I might be convinced that some other process is modifying the reference between this assignment and when it is actually used (at Render), but this is happening right at this line of code.What would cause this boolean assignment to behave this way without throwing an exception?
Solution:The answer turned out to be a parent object in the control hierarchy located outside of the user control itself. Since nothing was explicitly set to false, and I agreed with @Shadow Wizard, @Damien_The_Unbeliever and @CodeMonkey1 that it had to be some outside control influencing the panel at that point, I decided to put a recursive while loop to test the parent of each user control in the hierarchy at that point:
Dim o as Object = Me.pnlAddComment.Parent
While o IsNot Nothing
Me.lblMessage.Text &= "<br />" & o.ID & ": " & o.Visible.ToString()
o = o.Parent
End While
Then I just ran this on the server and the output came back with the full visibility of each control in the chain. What ended up occurring is that this control was contained within a view control within a MultiView. This view control is expected to be visible as it is supposed to be the ActiveView for this particular call, but at the point in the life cycle when my code is run, the view has not been identified as the active view. Since it's not officially active, the view is implicitly false, and all child controls return a value of false when Visible is queried.
The rest of the assignments behave as expected from that point. The lblRating control is set to false (permanently) because at that moment the proper visibility setting for pnlAddComment is false. The lesson I've learned here is not to make control visibilities dependent on each other in this fashion when there is an alternative (and just as simple) method.
Assemblies Not Being Loaded Properly?
Sep 19, 2009I have a windows forms Application using DCOM to connect to another server in order to retrieve data from a database. The program works perfectly fine on my develeopment box both inside of and outside of the idea.However it throws an exception on my test box: System.Exception.... TYPE_E_CANTLOADLIBRARY. The error happens when accessing a property of on the the public DCOM classes. The property holds an instance of one of the private classes for the DCOM. I've compared the registries and all the relevant entries seem to be the same. When I compared the dumps I noticed that System.Config and System.XML werent loaded on the test machine, even though they are installed and appear to be in the GAC.
[Code]...
Calculations Not Working Properly?
Apr 17, 2012I cannot figure out why my calculation is not working. I am doing for 1 to 12 and it gives me 12 inputs but counts my entries as 13? What am I missing. If I change it to 0 to 11 same thing. I am not sure what the issue is, but I cannot see it, and am not sure where to look.I need to end up with 12 cycles through and intEntries to be 12.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'initialize accumulator
Dim decEntries As Decimal[code].......
Can't Order The Data Properly
Sep 15, 2010I have a VB.Net 2008/Access 2007 app that I can�t get to display data in an organized way on a listview. The listview displays the data in the order that the data was entered in the products table. In the SQL statement that loads the listview I put ORDER BY SupplierTbl.CompanyName but it doesn't do it. The listview shows the data in the order that the records were entered in the database. So then I was going to settle for if I can get the listview sorted by clicking on the column header.If I can get that to work then that would be acceptable. So I then implemented the sort routine. The sort works and it doesn't.If you click on a column header then all the rows show the information nicely. The database has an OLE object column for storing images. Customer wants images stored in the database not file paths. When you click the listview the image displays in a picturebox.
The proper images display when the listview is clicked when I use the SQL statement below without the ORDER BY. But when I click on a column header and reorder the display it's no good. If you click on a row in the listview the wrong image is being displayed. It displays them in the order as they were in before the sort. All the other columns look good and are behaving except for the Image column. So that then makes me wonder if my original problem with the ORDER BY is directly related with the OLE object column. Is there something about this data type that I need to know to manipulate it in SQL? My reaction is that maybe since this column is resource heavy it goes by different rules. Can someone please tell me what I need to do to make the end result have some order? This is the SQL statement without the ORDER BY:
command.CommandText = "SELECT ProductTbl.ProductID, ProductTbl.PartNumber, " & _
" ProductTbl.AltPartNumber, ProductTbl.Description, ProductTbl.SupplierID, " & _
" SupplierTbl.SupplierID, SupplierTbl.CompanyName, ProductTbl.Category, " & _
[code]....
Can't Resize Font Properly
May 29, 2010I have a timer program. Initially, the font for the time is the correct size, and when I click "start", the time is the right size too(I had set the initial size to 26 in the properties menu). When I click "break", once the time is up, it displays "Break Over!!" to fit the label(because I changed the font size). Then when I click "start" again, the font has shrunken, even though I set it back to the original size of 26. Why is the font size for the timer not back to it's original size when I click "start" after I have clicked "break"?[code]...
View 2 RepliesCannot Decrypt PDF Files Properly
Dec 26, 2011I'm joining several files and would like to encrypt them with AES. As a test I'm joining the exact same file twice, but I'm never able to properly decrypt the second file.
Steps to reproduce:
Make sure you have a file "C:Original.pdf" or change the filepath.
1) Click Button1 to encrypt the file. This will create an encrypted file named "Encrypted.bin"
2) Click Button2 to decrypt the file. This will create a decrypted file named "Decrypted.pdf"
Both "Original.pdf" and "Decrypted.pdf" are 100% the same.
3) Uncomment the code between the hash character lines.
4) Repeat the first two steps.
"Original.pdf" and "Decrypted.pdf" are now not the same.
vb.net
Private enc As New Encrypt
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Encrypt
enc.EncryptDecrypt("C:Original.pdf", "C:Encrypted.bin", True)
[Code] .....
Cannot Read A File Properly?
Feb 22, 2009I'm in need of a simple Regular Expression that will match all strings that start with the string "textures/". The problem probably is when to end the match.
Here is an example of the type of file I need to parse:
[Code]...
I have attached an example file (it's from a game, and it's a free game, so I don't think this is not allowed?). When opening that with Notepad I see loads of spaces and a few strange characters. When opening it with Wordpad, I see mostly strange characters (but the "textures/..." strings I need are still there). When reading it with VB (IO.File.ReadAllText or using a StreamReader) I cannot get it to show more than a few random characters, and the "textures/..." strings are no longer there...
Cannot Set Primary Key Properly For Table
May 8, 2012After days of labouring, debugging and researching, im on the 3rd to last line and im stuck. This isnt the full code, but the relevant parts.
Dim dbProvider As String
Dim dbSource As String
Dim con As New OleDb.OleDbConnection
[Code].....
I understand this means my table doesnt have a primary key, but i have set one.
Ctype Not Working Properly?
Nov 1, 2009dim testpanel as new panel
dim test as CType(testpanel, Control))
msgbox(typename(test)) ' it gives me "panel"
'i dun get it, how can typename of test give me Panel when i explicitly call it to be converted to a Control type?
E.KeyCode Not Working Properly?
Jul 4, 2011So I opened 2 forms, Form2.vb and Form3.vbNow I put this:
Private Sub Form1_PreviewKeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.PreviewKeyDownEventArgs) Handles Me.PreviewKeyDown
If e.KeyCode = Keys.F8 Then
[code].....
Exit An Application Properly?
Nov 25, 2010i will just use Environment.Exit(code) to exit an application. (usually through a button click) , but i would like to know is it the proper way to exit , ie, releasing memory etc etc...
View 3 RepliesForm Is Not Showing Properly
Oct 8, 2011Using VB.Net[code]...
When textbox1.focus() at that time i clicked Control + Enter key, the formid=55 is showing instead of formid=54.
Form Not Displaying Properly?
Mar 30, 2010I have a windows form with listboxes, buttons and a checkbox. It works fine at home but when I take it to school it doesn't display properly. I have been given full privileges and the .NET framework V3.5 is installed. I have all my buttons/checkboxes on the right hand side but they don't display like they aren't even there (there is no extra blank form space either). The form sized wasn't locked
View 3 RepliesGet Passedtext Properly Working?
Mar 25, 2012i am making a simultaneous equations program and cant figure how to get passedtext properly working, as i declare the amount questions the user wants to answer in the settings form, it then passes this over to the simultaneous equations form and i cant get it to keep spawning questions until the number is reached.
Public Class simultaneousequations
Dim Random As New Random
Dim typeofquestion As String = Random.Next(1, 3)
[code].....
How To Close Forms Properly
Aug 23, 2010I have couple of forms can be opened on the screen but how can close all forms properly when i click the "x" button from the main form?
View 1 RepliesHow To Declare Variables Properly
Jun 8, 2011I am needing help in understanding how to declare variables properly. I am needing to write as program that calculates the commission for a sales person. I keep getting a error listed below. I thought I declared the salestextbox, costtextbox as integers correctly to use them in the calculation. I Copied my code below also. I have reread the chapter again and I am still lose.[code]
View 3 RepliesHow To Properly Change SetLocaltime
Sep 13, 2009this is vb.net 2005, I have some issues I believe with time format.everytime when I try to change datetime on my local PC, I got 9/11/2009 8:00PM Here is my
Private Declare Function SetLocalTime Lib "kernel32" (ByRef lpSystemTime As SYSTEMTIME) As UInt32
Structure SYSTEMTIME
Public wYear As UInt16
Public wMonth As UInt16
Public wDayOfWeek As UInt16
[code].....
is it any trouble if I try to apply that date on some other machine, like any built in additional timer within Windows XP?
How To Properly Increment Progressbar
Mar 31, 2009As the above subject suggests, I need some ideas on how to properly increment a progress bar while iterating through records with the backgroundworker component. This is what I've done so far...
Code: Private Sub tsmnuitmRefresh_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tsmnuitmRefresh.Click
tvwFolders.Nodes.Clear()
bgwNodes.RunWorkerAsync()
End Sub
[Code]...