You really need to learn how to initialise your variables. You need an As and an intial value like: dim num as integer= 0 or dim str as string= " " If it is areference type you need to use the New keyword as in: Dim bottomLabel As New System.Windows.Forms.Label Here is a good reference to start you off: https://msdn.microsoft.com/en-us/library/7ee5a7s1.aspx In your case I think it just means that you have to put the as clause at the enf of your function like: Public Function getFolderNameGD(ByVal fullyQualifiedFolderName As String, ByVal searchPattern As String) As String
Well the first line tells you: System.NullReferenceException: Object reference not set to an instance of an object. Which means you are referring to an object without having it declared. HAve you got option strict on and infer off? This will mostlike flag the error, depending on the error meg settings for your project.
It is not very clear what you attempt to do. In your example you replace a single word, in your for each loop you replace all(?) text. Also you should use something like:
For Each lbItem As string In ListBox1.Items
TextBox1.Text = Replace(TextBox1.Text, lbItem, "{HIDDED}")
Next
If you can see the form in the taskbar it is not hidden but minimized. So check all of your code for the word minimized using quick find from your edit menu.
I can't see where you open or close your database. So I suggest you check your select statement and check that your database is open etc. On second thoughts you might want to validate the string that comes from the textbox.
Well he is writing it as a console program as he states in his first sentence. So, yes you can use vb.net to create a vb.net console project. In my previous post as just missed the (?) to complete my sentence.
In vb6 you can't use declaration= dadada but you need to seperate these.
Private Sub cmdLogout_Click()
Dim reply As String
reply = MsgBox("Are you sure you want to Logout?", vbYesNo, "Confirmation")
If reply = vbYes Then
Unload Form1
frmAuthentication.Show
End Sub
This makes me always question is it vb6 or vb.net?
It's hard to understand what exactly you want to do. However, to put a fframe around the chart you use: Chart1.BorderSkin.SkinStyle = BorderSkinStyle.FrameThin1 and you can play around with different frames.
O.K. another way is to use the properties of the chart. Set BorderlineColor to black, BorderlineDashStyle to solid and than you can change the line thickness of the border
Yes you need to assign your value properly. Otherwise start your loop at the top and go down. That should work. For i As Integer = dt.Rows.Count - 1 To 0 step -1
Set your form's KeyPreview property to True and test for the key combinations you want to prevent in its KeyDown event, then set e.SuppressKeyPress = True
You need two textboxes and a button. Add a module to your project and copy:
Option Explicit
Public Function HexIt(sText As String) As String
Dim A As Long
For A = 1 To Len(sText)
HexIt = HexIt & Hex$(Asc(Mid(sText, A, 1))) & Space$(1)
On Error Resume Next
DoEvents
Next A
HexIt = Mid$(HexIt, 1, Len(HexIt) - 1)
End Function
and in the command button on the form you need to put:
Private Sub Command1_Click()
Dim txtAscii As String
txtAscii = Text1
If Len(txtAscii) > 0 Then
txtHex = HexIt(txtAscii)
Text2 = txtHex
End If
End Sub
Well if you want the form to fit into A4 you need to find the size of the form on screen and print to preview. Trial and error. These are good starting values to put into the form load event:
O.K so you want to print the whole form to A4 or part of it? So how big is the form -whole screen, part of the screen? How much space should it occupy on A4? The difficulty with using print form is that your screen resolution is different to the printer resolution. The easiest way is to change the size of the form to fit exactly what you want, but is maybe not possible. So without knowing exactly what you want it is hard to give any advice.
You are aware that you let the compiler do your conversions from text to decimal. Put option strict on and you will get some errors.Why? because you are multiplying text as in:
txtEur.Text = txtDollar.Text * 0.89
It is much better to declare variables correctly like: Dim DecDollar as Decimal =0 etc.
