While recently working on a program, I've run into two problems.Firstly, let me state my purpose of this program.The users enter a 'script' into the VB program, the program then saves the scripts as a '.java' file, then attempts to compile it using java
View 3 RepliesI am using a com object to maniplate data inside an external program using VB.NET. One of the methods this com object provides requires 1 string parameter.The external program, however, requires a sting of a specified length, regardless of the number of characters used. The string to be passed to the function (length 36) is a combination of the below key fields.[code]I have tried the VB6 compatability's VBFixedString type but the com object's method throws an exception due to a type mismatch.If I convert the VBFixedString back to a .NET string before passing it to the method, the first null character is again interpreted as a string terminator and the rest of my string is chopped.
View 1 Repliesbytes ( 00 00 00 ) I'm trying to remove from a specific set of locations within a byte stream. The following code is what I'm using. I tried using the Trim function as listed in the code at the bottom but that had no effect. I'm extracting from a fixed byte range and there are null values after the end of valid ascii characters. Dim temp() As Byte = GetByteArray(FrameData, 3, 32)
Private Function GetByteArray(ByVal MyArray As System.Array, ByVal Start As Integer, ByVal Length As Integer) As Byte()
[Code]...
So I want my program to read a file, but sadly there are null characters in the text file. The program searches for strings and I want it, when searching, to ignore all of the null values and just the actual characters. Is this possible?
View 4 RepliesHave read most of the null value posts here, and I have managed to get things working as far as a "next record" button for my database application form (there's some awesome advice on this forum!). I have just one question, though. How do you manage saving of blank text box values from a form? I am using JET, but when I try to save an updated file that has a null value, it is not letting me. I got around it by forcing the text boxes with null values to contain " ", but obviously this is not the bext solution!
View 1 RepliesI'm trying to save a TimeSpan variable from VB into a SQL database, into a non-null column.It works fine for other values, but when I try to save 00:00:00 I am told that I cannot save NULL into a non-null column...Is there a way to get it to actually save this rather than think that it's NULL?
Note: This code is a method in a class, which has a property:
Private mCommand As New SqlCommand
Dim Param As New SqlParameter
Param.ParameterName = "@" + ParameterName[code]......
rewriting 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]....
Essentially I am trying to replicate the Windows 7 (In-Windows) activation key TextBox form. The Form where it will auto capitalize letters, remove or deny all non alphanumeric characters except dashes every 5 characters that will be auto-input.I assume this can be done with a fairly complicated replacement Regular Expression but I cannot seem to create one to fit the needs.
This is an Example of what I have right now, but it creates an infinite loop as it removes all characters including dashes, than adds a dash, which changes the text and removes the dash again.
[Code]...
i have been trying to remove special characters. i am not able to remove many crlf in middile of the string.
View 3 RepliesI have a fairly simple piece of code:
Private _PurchaseDelivery as PurchaseDelivery
Protected Overrides Sub InsertItem(ByVal index As Integer, ByVal item As PurchaseDeliveryItem)
[Code]....
Which is inside a class which overrides a custom list base. The code is occassionaly throwing an unhandled exception, System.NullReferenceException, on this line when used in production:
If _PurchaseDelivery IsNot Nothing AndAlso _PurchaseDelivery.DefaultSKUBinID.HasValue Then
DeafultSKUBinID is declared as an Integer? (Nullable Int) in the PurchaseDelivery class. I cannot see what might be causing this error, why would this be returning an error?
I need to create a console program that allows you to enter a string, of which is then outputted in reverse.
Sample:
Input: Diewas
Output: saweiD
Apparently I need to find out about strings and will also need to use a loop.
Not sure if too many people know this, but the following line will cause an error:
GroupName.Substring(0, 3) = "jt_"
....if the length of GroupName is less than 3 characters. I always thought it would simply return whatever characters in GroupName, but no, it errors. I must be thinking of the old VB6 days.So, I now have to change the code to:
If (GroupName.Length > 2) Then
If (GroupName.Substring(0, 3) = "jt_") Then
Note that the two comparisons need to be on separate lines. If they are on the same line, such as:
If (GroupName.Length > 2) and (GroupName.Substring(0, 3) = "jt_") Then then the code will still fail as the length command is executed at the same time as the substring command- which will cause the error when the GroupName length is less than 3.Just thought that those of us not aware of this should be!
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('9844f9bfb55449e6a786fa62aaadfa20')
dp.SyntaxHighlighter.HighlightAll('f6d554fd98464bdba9159b319e51b381')
dp.SyntaxHighlighter.HighlightAll('93bf4ca63ad8447abdf084d8a9991e15')
I have two textboxes. I type in one of them and the text gets copied in real time into another textbox. There is one catch. I need to replace specific character with something else.
If I enter a quote " in textbox1, it has to be replaced with " in textbox2.
I started with something like the below code, but obviously this does not work (tried different stuff - this is for demonstration only). In the example below 'a' represents " , and 'b' represents "
Private Sub TextBox1_KeyUp(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.KeyUp
TextBox2.Text = TextBox1.Text
[Code]....
With the shape of really large characters such as numbers and alphabetic characters + others, is there a way to get that shape as a REGION please?Imagine a really fat snake forming the letter S or two rectangles placed together to form a large letter L or a T like the shapes in TETRIS.
1) Does anyone know of anything in VB.Net that can translate such shapes into a System. Drawing.Region or know of a project elsewhere that achieves this please?
2) While I'm on the subject, how would you SCALE UP / DOWN a System.Drawing.Region please? How would you work out the Transform Matrix required please?
I'm making an application that will change position of two characters in Word.
[Code]...
Program works good, it is mixing characters good, but it doesn't write text to the file. It will write text in console, but not in file. Note: Program is working only with words that are divisible by 2, but it's not a problem. Also, it does not return any error message.
I'm making a custom control suited for handling passwords. I have created a control that inherits from a text box and I have implemented a lot of things so far. But what i want to do now is create a system so that when a user types It will display his last character typed for a X amount of time. Is there a way to turn only selected characters into password characters and still be able to get the password text from the Text property ?
View 4 RepliesHow to check whether a column is null i use the following code but I got this error "Input string was not in a correct format."
[Code]....
When I put a break point to the last if clause in the sub ("If (backOrder < 0) Then", see below) it runs until the break point, if I put the break point further below, I get the following error:
Cannot insert the value NULL into column 'OrderID', table 'WHM.dbo.OrderDetails'; column does not allow nulls. INSERT fails. The statement has been terminated.
I've discovered first hand that it only happens when prodqty is bigger then qtyOnStock, thus executing the if clause.
The code:
Private Sub NCOSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NCOSubmit.Click
Dim sqlText As String = ""
[Code]....
I installed: Visual Studio 2008 Shell Isolated Mode Redistributable package
But for some reason, since it is a "2008" application I am getting this message:
Quote:
Value cannot be null.Parameter name: serviceInstance
Everytime I use a visual studio product, I get that error message, I have tried with:
- VB.net
- IronPython
- C++
When ever I try to open something in "Design" view, I get that message,
VS 2008 Add some characters in a string?
View 1 RepliesI have an app to send SMS (developed using vb 2008) The characters allowed for the texts sms are them of "iso-8859-1" When the user writes in the textbox I do not want to allow him to write not allowed characters. Is there some instruction or function in VB 2008 to do it automatically?
I might create an "a bit "manual" function but before I prefer knowing if it exists something more automatic.
In the line below i need to remove the last two characters from a string.
51385_poster2000.jpg_1
53279_poster2000.jpg_2
56049_poster2000.jpg_3
The last charaters can range from 1 to 100 This is the code that i am using to remove unwanted characters which is working how i want it to do but when i pass each file to OrigName to get the original name
i am getting the above and i can not see where the '_1' are getting added. I don't want to mess too much with it incase it stops working the way i need it too. The lines in bold are the ones that write the results to a .tmp text, see below.
[Code]...
I am testing a program, and I am getting a null reference error at this line. oParent.Invoke(oParent.cUpdatingSolidWorks, iSolidWorksItem). I have stepped through the program, and all the items are created. A watch window with the three objects all have data in them. I am wondering what would cause this error if the objects exist. [Code]
View 5 RepliesI have built my project successfully but when I run App. I get error message:value cannot be nullParameter name: activationContext
View 3 RepliesI am still a newbie with VB. If I return a number the if statement works fine, with opening the new form and updating it as needed. Id the if statement returns a Null from the database it crashes.
[code]...
I have in my DB a few number fields, but I would like put null values or empty values in some of this fields...
I had try this but without results:
If valorcolocardebito = 0 Then
valorcolocardebito = Nothing
End If
[Code].....
Basically, when you set an Integer to "Nothing" it seems to equal the same value as if you were to set it to 0. So, in a function that returns an Integer how can I return something that will show that the function failed? In most cases I would use -1 or something but in this case I need to allow for negative values too.
Here's some more detailed information: I'm using the GetValue method of the Microsoft.Win32.RegistryKey class to read a numeric value from the registry. The GetValue method has an optional argument that you can pass in that specifies what should be returned if the value did not exist, normally I would use Nothing but in this case because I am storing the returned value in an Integer then it is just the same as if the GetValue method returned 0 (which is a valid value in this case).
Example:
vb.net
Dim Reg As Microsoft.Win32.RegistryKey = My.Computer.Registry.LocalMachine
Dim SubKey As Microsoft.Win32.RegistryKey = Reg.OpenSubKey("SYSTEMCurrentControlSetControlTimeZoneInformation", False)
[Code].....
I am using the following code to get search results from The Movie Database.org using their api.
Dim xmltempdir As String = My.Computer.FileSystem.SpecialDirectories.MyDocuments.ToString & "cwbrowser emp"
Dim stylesheetlocation As String = xmltempdir & "searchresults.xslt"
Dim request As HttpWebRequest
Dim response As HttpWebResponse = Nothing
Dim reader As StreamReader
Dim result As String = vbNullString
[Code] .....
The line which is coloured red is the problem line. 'htmpath is shown as "C:UsersColinDocumentscwbrowser empsres.htm" which is correct.
Why I get the Illegal Characters In Path error.
I'm trying to insert a - after ever 5 chars. I made this code.
Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
If TextBox1.Text.Length = "5" Then
TextBox1.Text += "-"
End If
[Code] .....
But the mouse returns always to the left after it enters a -.
So I have this
Dim a as string = "Hello"
Dim b as string()
now I want b(0) to have "H", b(1) "e", b(2) "l", and so on.
btw a changes everytime, so don't just say do b(0) = "H"