I'm currently working on a program to store files and information. I'm wanting the program to be able to have multi-user logins i.e. there are numerous combinations of usernames and Passwords. I've created a program that will create new accounts and save them in a .bin file (in the form Username Password). However, now I need to use the user accounts to grant access to a form.
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How to create and save screenshot to PNG file? Lang:VB or C# (VS2008)
View 2 RepliesI am trying to use the BGW to save a DGV to excel file, but don't know how to do it correctly, specifically setting the savefile name this code doesn't work gives me:
'System.Runtime.InteropServices.COMException' occurred
- Make sure the specified folder exists.
- Make sure the folder that contains the file is not read-only.
- Make sure the file name does not contain any of the following characters:
Ensure that your Main function has STAThreadAttribute marked on it. This exception is only raised if a debugger is attached to the process. I also tried doing the Save in the BGW RunWorker Completed event but then there is no file name. It seems I need to pass the file name the user inputs in the SaveFileDialog to the BWG WorkerCompleted event somehow
Private Sub excelexp_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles excelexp.Click
ProgressBar2.Visible = True
Saving.Visible = True
Dim saveFileDialog1 As New SaveFileDialog()
[Code] .....
i am trying to create a form in VS using ASP that when upon submitting a form the details will get automatically stored in an xml file which can be accessed later on a chosen file save path.i have 2 files ... "Contact.aspx" and "Contact.aspx.vb".i have created the form in the "Contact.aspx" and when trying to enter the fields in the "contact.aspx.vb" i keep getting several errors such as for example...
Error 5 'Formatting' is not a member of 'System.Web.UI.WebControls.XmlBuilder'
Error 6 'WriteStartDocument' is not a member of 'System.Web.UI.WebControls.XmlBuilder'.
Error 7 'WriteComment' is not a member of 'System.Web.UI.WebControls.XmlBuilder'.
Error 8 'WriteStartElement' is not a member of 'System.Web.UI.WebControls.XmlBuilder'.
Error 10 'WriteAttributeString' is not a member of 'System.Web.UI.WebControls.XmlBuilder'.
there is like 30 errors in total... im literally stuck out my head been trying for 2 days now and can't grasp what im doing wrong ive tried even some of the tutorials online but loads of errors...
This is my first attempt at creating a Winforms application, and I have been developing in the .Net Framework (Silverlight, ASP.Net, WPF) for about 6 months. So, my appologies if this is a newbie question.
Basically what I am doing right now is taking the drawings of a stylus-based input, and storing them into an image field in a SQL Server database. Then, in another form, I go and get that image out of the database, and load it into a picture box. It works, but it is rather "sloppy" how it got there.When the user clicks save, it stores that image into a temporary folder, then converts it to a byte array and throws it into the database that way. Then, it deletes the file from the temporary folder. When retrieving it, it pulls it out of the database in a byte array, then converts it to an image in a temporary folder, thus displaying it on the form.
Is there a way that I can just bypass the storing of the file onto the user's harddrive both times, and go from byte array to picturebox?
When you reach a captcha while creating accounts on some sites, is there code that would make the program pause and a message box pop up that would ask for input for the captcha code?
View 24 RepliesI would like to know if it is possible to make my application be able to save the file as the current date. the idea is to have it where the staff login to the application and the application opens the file with the current day.
This means that in the morning before staff open the program the office staff can put up the information, i.e. like briefing sheet, daily notes. etc
Using VS2005. The code below saves a datagrid (datagridview1) to XML file and works well. But if newPat is true then I want to save the extra data in the XML file as well. But it doesn't work for some reason. When newPat is true it just saves the XML file as normal but without the extra row.
It seems this code is not working what so ever. I tried replacing
dr("patientName") = gridrow.Cells("patientName").Value
with
dr("patientName") = "test"
And it didn't work, it still saved the names that were in the grid.
newPat = true
For Each gridrow In DataGridView1.Rows
Dim dr As DataRow
[Code] .....
Well, in my previous thread i needed help deleting arrays, for the codes i use its here[url]...
[code]...
Well, i want to save my array to a file that will be encrypted and then i could read it, example when i have my arrays in the application and i save it, i close my application and then i open it again i would like to load all the arrays and all the items in the "DomainUpDown" with a button, which will be read from the file, but i don't want the file to be seen from the users for secure reasons, i would like it to be encrypted.
What i had in mind was saving it as ini file, encrypting the file to another extension, and encrypt it to binary, but to do that i would use the special folder in the AppData, is there a better way for me to save the arrays and encrypt it and be able to read it again and load it in my application ?
I'm trying to make a simple program that stores my accounts in a .txt file. Each account has 3 properties, account, password, and source. I know there are alot of better ways to do this, but I'd really rather use a text file because I'm working with PhP also.
testacc1 password1 source1
testacc2 password2 source2
testacc3 password3 source3
I can easily write this to a .txt file, but how can I go through it?
Currently, I've encountered a problem where I do not how I can store the variable of my battery level in a text file. I tried .xml and .txt file and it returns me text which can't be read.The code related:
vb.net
[code]Dim psBattery As PowerStatus = SystemInformation.PowerStatus
Dim perFull As Single = psBattery.BatteryLifePercent
[code]....
The place where I do not know what to insert is the "Insert Battery Percentage Here" part so I guess that's the problem.For your info, if you were to use a MsgBox to display, the code which displays that would be <MsgBox("Total battery power remaining: " & perFull * 100 & "%")>
I have a piece of software that can be used either on an admin account or a standard user account of a completely stand-alone, Windows XP machine.
I have also set up some log files that the system uses when it either performs an admin function or if an error occurs. the location of these files is a C: location - not (from what I can see) associated with the admin account in any way.
When running the software from the admin machine, the log file is appending fine. When running the software from the standard user machine, the log file causes an error, suggesting that "Access to the path 'C:HNP MTWP Log FilesAdministrative ToolsAdmin.log' is denied.
This error occurs when first setting up the FileStream. Here is my code.
Imports System.IO
Public Class Log
Private Const cnDirectory as String = "C:HNP MTWP Log FilesAdministrative Tools"
[Code]....
By this code i am creating a folder at a desired location:
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
[code]....
Now i want to create a .txt file in that folder.so how to proceed wirth this?
[Code]...
In the database i am saving the enitre path of the newly created folder along with the folder name..... but i want to save only the folder name in the database.... How to do this?
The user will enter a folder name in the combobox1 and clicking the create folder button the folder will be created in the applications bin folder; For doing this, i did this
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If ComboBox1.Text = "" Then
[Code]....
Now when the user enters a file name in the combobox2 and clicks the save button(Save button is not shown in the snapshot) then a .txt file with the name entered by the user in the combobox2 will be created in the folder whose name is specified in the combobox1.
I have create setup for my project, when i tried to open the form which contain datagridview on it. It give me this error. Here is the attachment screen shot of the error.How to solve this error.
View 12 RepliesI need my app to create a excel file, but I am getting a error running this code. While running this in debug, on the line "xlWorkSheet.SaveAs("C:vbexcel.xlsx")" there is a error saying "ComException was unhandled" and "Exception from Hresult 0x800A03EC"
Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object,_
ByVal e As System.EventArgs) Handles Button1.Click
[code]....
I'm getting this error 'column' argument cannot be null. Parameter name: column at the bold character instruction. Also I would like to know how to relate two tables with two key columns in each table
Dim connection As New OleDb.OleDbConnection(strTextoConn)
Dim EnPartesdataSet As DataSet = New DataSet("Enpartes")
Dim strsql As String
[Code].....
Currently 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]...
I need a full VB .Net example of how to start with a 24 bit color bitmap, change i to a paletted 8 bit color PNG, and save it. The Microsoft documentation I have found iincomprehensible and has no good working examples.
View 3 Replieshow to create a bitmap image of a specified size? then how to save and reload such a bitmap to and from a file?VB2005 starter
View 1 RepliesCurrently, I am try to get the email addresses that have been saved or stored by the user of the computer. This isn't the emails that the user has sent or received, or the contacts he/she has in his address book. Just simply the email accounts that have been accessed from the computer.I know that there are some locations stored in the registry that have the email account. The email addresses that are used on the current computer. I just can't seem to find them on my computer.I am not sure if the registry is the only place to find it or if it stored on the web browser such as internet explorer or google chrome.
View 1 RepliesI'm trying to save files in a new folder that get created and then copy 2 other files that are in my resources to that folder. I get this error:
Quote:
UnauthorizedAccessException was unhandled: Access to the path 'C:UsersMike.Mike-PCDesktopJava IDE' is denied.
This is my code:
Code:
Dim desktopPath As String = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory)
Dim sdlg As New SaveFileDialog
[Code].....
I would like to use code to create a checkbox with default properties and place it at a certain position in a groupbox. For example, i would like to do this by pressing a button and that i can give in the name and tag by use of an imputbox. Also, i have noticed that if something like this is done, these changes aren't permanent and don't apply to the designer nor the code in VB. Is there a way to let the newly created checkboxes appear in the designer? And what about permanently deleting checkboxes by pressing a button. With "Dispose()" it isn't deleted from the designer...
View 2 RepliesI'm drawing a chart in a pictruebox with a sub called Techart. After that I'm trying to turn the drawing into a bitmap, so that it will be persistant and also so that I'll be able to save it. This is what I've got from searching the forum:
[Code]...
I have a VB.net applications that runs on XP and creates a directory and creates an Excell workbook and saves it. But when I do the same in Vista , when it tries to create a directory to save the excel workbook, it gives me an error that the directory does not exist. If I create the directory manually, it still gives me the same error. Is there a COM call for office 2007 on Vista other than worksheet.SaveAs(FileName:=path). All else works on Vista apart from creating a directory and Saving Excell Worksheet.
Public Function createDirectory(ByVal path As String) As String
Dim new_path As String
Try
[code].....
Is it possible to create web games in VB 2005? If so, how does the process work?
I'm also looking for a tutorial to assist me in creating a tic-tac-toe game for my web site.
I have a DatagridView which displays the following: IDNo, SubjectName, FirstName,MI, LastName, YearLevel, Address, Gender. I want to save whatever is displayed in it to my database...My code below does not save the SubjectName all the rest are saved.
Private Sub btnRegister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRegister.Click
Try
[code].....
I have a table in SQL Server with a field defined as Varbinary (MAX). In VB I am trying to save an image to the table. The file I'm using is 139kB in size and I get no errors but when I look at the record, the Attachment column where my image stream should be is empty. The rest of the information is saved. I checked the buffer and it grabs the correct size of the file (141475) so I'm very sure it's found and loaded the image.
Could the parameter from the SQL not be passing the binary value to the parameter properly?
[Code]...
I am trying to learn XML, for which i have created a simple Employees Program. I want to save the records of the employee in an xml file, so far i have the following code:
vb
Private Sub SaveRecord(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim XMLSettings As New XmlWriterSettings
XMLSettings.Indent = True
XMLSettings.IndentChars = " "
XMLSettings.NewLineOnAttributes = True
[Code] .....
This is only working for a single record, How should I insert more employees records within this xml file?
