I'm trying to do a visitor control program and save the visitor info as well their signature to a SQL db. The PictureBox code is working great but I can't save the image, I've searched and I saw that it can also be saved as binary. I don't want to save it locally 'cause it's never the same visitor and my goal is to real put everything on the database. Any ideas on how to solve this?
The code used to draw a signature comes from this SO question:
How to draw a signature and save it to disc as a Bitmap?
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Imaging
Imports System.IO
Public Class registrovisitas
Private signatureObject As New Dictionary(Of Integer, List(Of Point))
Private signaturePen As New Pen(Color.Black, 4)
Private currentCurvePoints As List(Of Point)
Private currentCurve As Integer = -1
Private Sub pBoxSignature_MouseDown(sender As Object, e As MouseEventArgs) Handles pBoxSignature.MouseDown
currentCurvePoints = New List(Of Point)
currentCurve += 1
signatureObject.Add(currentCurve, currentCurvePoints)
End Sub
Private Sub pBoxSignature_MouseMove(sender As Object, e As MouseEventArgs) Handles pBoxSignature.MouseMove
If e.Button <> MouseButtons.Left OrElse currentCurve < 0 Then Return
signatureObject(currentCurve).Add(e.Location)
pBoxSignature.Invalidate()
End Sub
Private Sub pBoxSignature_Paint(sender As Object, e As PaintEventArgs) Handles pBoxSignature.Paint
If currentCurve < 0 OrElse signatureObject(currentCurve).Count = 0 Then Return
DrawSignature(e.Graphics)
End Sub
Private Sub DrawSignature(g As Graphics)
g.CompositingQuality = CompositingQuality.HighQuality
g.SmoothingMode = SmoothingMode.AntiAlias
For Each curve In signatureObject
If curve.Value.Count < 2 Then Continue For
Using gPath As New GraphicsPath()
gPath.AddCurve(curve.Value.ToArray(), 0.5F)
g.DrawPath(signaturePen, gPath)
End Using
Next
End Sub
Private Sub registrovisitas_Load(sender As Object, e As EventArgs) Handles MyBase.Load
dtp_FECHA.Format = DateTimePickerFormat.Custom
dtp_FECHA.CustomFormat = "dd/MM/yyyy"
End Sub
Private Sub Nuevo_ID_VISITA()
Dim rs As New ADODB.Recordset
Dim strconsultamax As String = "Select max(ID_RegistroVisitas)+1 as Nuevo_ID_VISITA from [Registro Visitas]"
rs.Open(strconsultamax, BdSQL, 1, 3)
lbl_ID.Text = rs("Nuevo_ID_VISITA").Value.ToString
rs.Close()
rs = Nothing
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Nuevo_ID_VISITA()
Dim bmp As New Bitmap(pBoxSignature.Width, pBoxSignature.Height)
pBoxSignature.DrawToBitmap(bmp, New Rectangle(0, 0, pBoxSignature.Width, pBoxSignature.Height))
Dim rs As New ADODB.Recordset
rs.Open("Select * from [Registro Visitas]", BdSQL, 1, 3)
rs.AddNew()
If rs.EOF = True Then rs.AddNew()
rs("ID_RegistroVisitas").Value = lbl_ID.Text
rs("Fecha_RegistroVisitas").Value = dtp_FECHA.Value
rs("Visitante_RegistroVisitas").Value = txt_VISITANTE.Text
rs("DNI_RegistroVisitas").Value = txt_DNI.Text
rs("hentrada_RegistroVisitas").Value = txt_hE.Text
rs("NTarjeta_RegistroVisitas").Value = txt_mE.Text
rs("Motivo_RegistroVisitas").Value = txt_MOTIVO.Text
rs("Destinatario_RegistroVisitas").Value = txt_DEST.Text
rs("FirmaDest_RegistroVisitas").Value = bmp
rs("Tipo_de_Registro").Value = "1"
rs.Update()
MessageBox.Show("S'han guardat els canvis")
rs.Close()
rs = Nothing
End Sub
End Class
Related
I'm developping a modular dashboard in Visual Basic that starts as an empty container than i can add modules to populate it.
The parent form is an MDI container and every module is a child MDI form that have fixed size.
I'd like to snap all of that child form to a grid both when the user creates a new one and when moves one of it inside the container (like they are magnetized to that grid).
How can i do that? Thanks
If I well understand you need something like this:
Private Class ImaginaryGrid
' You can change Columns and Rows as you want
Shared Rows As Integer = 3
Shared Cols As Integer = 3
Private Shared Function SnapToGrid(target As Form) As Point
Dim AllW As Integer = Screen.PrimaryScreen.WorkingArea.Width
Dim AllH As Integer = Screen.PrimaryScreen.WorkingArea.Height
Dim parent = target.MdiParent
If parent IsNot Nothing Then
AllW = target.MdiParent.ClientSize.Width
AllH = target.MdiParent.ClientSize.Height
End If
Dim currentPoint As Point = target.Location
Dim stepW As Integer = CInt(AllW / Cols)
Dim stepH As Integer = CInt(AllH / Rows)
Dim targetCol As Integer = CInt(currentPoint.X \ stepW)
Dim targetRow As Integer = CInt(currentPoint.Y \ stepH)
Dim newX As Integer = targetCol * stepW
Dim newY As Integer = targetRow * stepH
target.Location = New Point(newX, newY)
target.Width = stepW
target.Height = stepH
End Function
Shared Sub AttachFormToStayInGrid(frm As Form)
AddHandler frm.ResizeEnd, Sub()
SnapToGrid(frm)
End Sub
SnapToGrid(frm)
End Sub
End Class
Usage:
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles Me.Load
ImaginaryGrid.AttachFormToStayInGrid(Me)
End Sub
Take changes (if needed) as comments below shows:
Here's a beefed up version based on the same idea as G3nt_M3caj's suggestion:
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
ImaginaryGrid.Client = Me.Controls.OfType(Of MdiClient).FirstOrDefault
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim frm As New Form
ImaginaryGrid.AttachFormToStayInGrid(frm)
End Sub
Private Class ImaginaryGrid
Public Shared WithEvents Client As MdiClient
Public Shared FixedChildSize As New Size(250, 150)
Private Shared Function SnapToGrid(target As Form) As Rectangle
Dim colX As Integer = target.Location.X / FixedChildSize.Width
Dim colY As Integer = target.Location.Y / FixedChildSize.Height
Dim newX As Integer = colX * FixedChildSize.Width
Dim newY As Integer = colY * FixedChildSize.Height
Return New Rectangle(New Point(newX, newY), FixedChildSize)
End Function
Shared Sub AttachFormToStayInGrid(frm As Form)
frm.Size = FixedChildSize
frm.FormBorderStyle = FormBorderStyle.FixedSingle
frm.MdiParent = Client.Parent
frm.Show()
SnapChild(frm)
AddHandler frm.ResizeEnd, Sub()
SnapChild(frm)
End Sub
AddHandler frm.LocationChanged, Sub()
If frm.WindowState = FormWindowState.Normal Then
snapRectangle = SnapToGrid(frm)
Client.Refresh()
End If
End Sub
End Sub
Private Shared Sub SnapChild(ByVal frm As Form)
If frm.WindowState = FormWindowState.Normal Then
Dim rc As Rectangle = SnapToGrid(frm)
frm.Bounds = rc
snapRectangle = Nothing
Client.Refresh()
End If
End Sub
Private Shared snapRectangle? As Rectangle
Private Shared Sub Client_Paint(sender As Object, e As PaintEventArgs) Handles Client.Paint
If snapRectangle.HasValue Then
e.Graphics.DrawRectangle(Pens.Black, snapRectangle)
End If
End Sub
End Class
End Class
I am trying to write (type) directly onto a bitmap. I need to be able to type at the mouse position, so where ever on the screen i click the mouse, I can start typing text with the keyboard.
Here is a working VS 2017 VB Win Form code that will print "Hello World" at the mousedown position. But it only works with predetermined text. I would like to be able to just type at that spot. I feel I am so close, just can't get it to work.
Imports System.IO
Imports System.Windows.Forms.DataVisualization.Charting
Public Class Form1
Dim WithEvents Chart1 As New Chart
Private Structure TextPoints
Dim MPos As Point
Dim Txt As String
End Structure
Private TextList As New List(Of TextPoints)
Private TempPoint As Point
Private FirstPoint As Point
Dim xcnt As Integer = -1
Dim ycnt As Integer = -1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles Me.Load
Me.Size = New Size(1100, 700)
Me.Location = New Point(10, 10)
MakeBackImage()
With Chart1
.Name = "Chart1"
.Location = New System.Drawing.Point(40, 40)
.Size = New System.Drawing.Size(1010, 610)
.BackImage = "BackImg.jpg"
.Parent = Me
End With
End Sub
Private Sub Chart1_MouseDown(ByVal sender As Object,
ByVal e As System.Windows.Forms.MouseEventArgs) _
Handles Chart1.MouseDown
FirstPoint = New Point(e.X, e.Y)
TempPoint = New Point(e.X, e.Y)
Me.Refresh()
End Sub
Private Sub Chart1_MouseUp(ByVal sender As Object,
ByVal e As System.Windows.Forms.MouseEventArgs) _
Handles Chart1.MouseUp
Dim T As New TextPoints With {
.MPos = TempPoint,
.Txt = "Hello World"}
TextList.Add(T)
Me.Refresh()
End Sub
Private Sub MakeBackImage()
Dim x, y As Integer
Dim img As Image = New Bitmap(1020, 620)
Dim graphics As Graphics = Graphics.FromImage(img)
graphics.Clear(Drawing.Color.White)
For x = 0 To 1000 Step 20
graphics.DrawLine(Pens.Black, x, 0, x, 600)
xcnt += 1
Next
For y = 0 To 600 Step 20
ycnt += 1
graphics.DrawLine(Pens.Black, 0, y, 1000, y)
Next
img.Save("BackImg.jpg", Imaging.ImageFormat.Jpeg)
End Sub
Private Sub Chart1_Paint(ByVal sender As Object,
ByVal e As System.Windows.Forms.PaintEventArgs) _
Handles Chart1.Paint
Dim drawString As String = "Hello World"
Dim drawFont As New Font("Arial", 14)
Dim drawBrush As New SolidBrush(Color.Black)
For Each t As TextPoints In TextList
e.Graphics.DrawString(t.Txt, drawFont,
drawBrush, t.MPos.X, t.MPos.Y)
Next
End Sub
End Class
This is a simplified code. Actually, the background image is only created once, but I added code to dynamically create it here to make the demo better.
I Try to save all the items from a list box with MY.SETTINGS
And Retrieved again on load
But it seems i made an error but i cannot figure out what.
its give 2 error
This is the errors
Error 3 'itemmd5' is not a member of 'MediaAdsAntivirus.My.MySettings'.
Error 2 'myitems' is not a member of 'MediaAdsAntivirus.My.MySettings'.
For this errors i just figure out i forgot to add it on settings
but now i just have a new error
This Is My New Error
Error 2 Value of type 'System.Windows.Forms.ListBox.ObjectCollection' cannot be converted to 'String'.
And i need to load them on loadfrom
How Can I List All Items Again In To It
This Is My Code:
Imports System.IO
Imports System.Security
Imports System.Security.Cryptography
Imports System.Text
Imports System.Net
Public Class form15
Dim md5hashindexer = 1
Dim md5namesave = "Hashes"
#Region "Atalhos para o principal hash_generator função"
Function md5_hash(ByVal file_name As String)
Return hash_generator("md5", file_name)
End Function
Function sha_1(ByVal file_name As String)
Return hash_generator("sha1", file_name)
End Function
Function sha_256(ByVal file_name As String)
Return hash_generator("sha256", file_name)
End Function
#End Region
Function hash_generator(ByVal hash_type As String, ByVal file_name As String)
Dim hash
If hash_type.ToLower = "md5" Then
hash = MD5.Create
ElseIf hash_type.ToLower = "sha1" Then
hash = SHA1.Create()
ElseIf hash_type.ToLower = "sha256" Then
hash = SHA256.Create()
Else
MsgBox("Type de hash inconnu : " & hash_type, MsgBoxStyle.Critical)
Return False
End If
Dim hashValue() As Byte
Dim fileStream As FileStream = File.OpenRead(file_name)
fileStream.Position = 0
hashValue = hash.ComputeHash(fileStream)
Dim hash_hex = PrintByteArray(hashValue)
fileStream.Close()
Return hash_hex
End Function
Public Function PrintByteArray(ByVal array() As Byte)
Dim hex_value As String = ""
Dim i As Integer
For i = 0 To array.Length - 1
hex_value += array(i).ToString("X2")
Next i
Return hex_value.ToLower
End Function
Private Sub BT_Parcourir_Click(sender As System.Object, e As System.EventArgs) Handles BT_Parcourir.Click
If OpenFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
Dim path As String = OpenFileDialog1.FileName
TB_path.Text = path
LB_md5.Text = md5_hash(path)
LB_sha1.Text = sha_1(path)
LB_sha256.Text = sha_256(path)
ListBox1.Items.Add(LB_md5.Text)
ListBox1.SelectedIndex += 1
Dim itemmd5 = LB_sha256.Text
Dim itemname = md5namesave + md5hashindexer
For Each line As String In ListBox1.Items
itemmd5 = My.Settings.myitems
My.Settings.itemmd5 = ListBox1.Items
Next
End If
End Sub
Private Sub LB_sha256_Click(sender As Object, e As EventArgs) Handles LB_sha256.Click
End Sub
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs)
End Sub
Private Sub form15_Load(sender As Object, e As EventArgs) Handles MyBase.Load
End Sub
End Class
I finally decide to save in txt file and load The data again from it
This Is The Working Code
Imports System.IO
Imports System.Security
Imports System.Security.Cryptography
Imports System.Text
Imports System.Net
Public Class form15
Dim md5hashindexer = 1
#Region "Atalhos para o principal hash_generator função"
Function md5_hash(ByVal file_name As String)
Return hash_generator("md5", file_name)
End Function
Function sha_1(ByVal file_name As String)
Return hash_generator("sha1", file_name)
End Function
Function sha_256(ByVal file_name As String)
Return hash_generator("sha256", file_name)
End Function
#End Region
Function hash_generator(ByVal hash_type As String, ByVal file_name As String)
Dim hash
If hash_type.ToLower = "md5" Then
hash = MD5.Create
ElseIf hash_type.ToLower = "sha1" Then
hash = SHA1.Create()
ElseIf hash_type.ToLower = "sha256" Then
hash = SHA256.Create()
Else
MsgBox("Type de hash inconnu : " & hash_type, MsgBoxStyle.Critical)
Return False
End If
Dim hashValue() As Byte
Dim fileStream As FileStream = File.OpenRead(file_name)
fileStream.Position = 0
hashValue = hash.ComputeHash(fileStream)
Dim hash_hex = PrintByteArray(hashValue)
fileStream.Close()
Return hash_hex
End Function
Public Function PrintByteArray(ByVal array() As Byte)
Dim hex_value As String = ""
Dim i As Integer
For i = 0 To array.Length - 1
hex_value += array(i).ToString("X2")
Next i
Return hex_value.ToLower
End Function
Private Sub BT_Parcourir_Click(sender As System.Object, e As System.EventArgs) Handles BT_Parcourir.Click
If OpenFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
Dim path As String = OpenFileDialog1.FileName
TB_path.Text = path
LB_md5.Text = md5_hash(path)
LB_sha1.Text = sha_1(path)
LB_sha256.Text = sha_256(path)
ListBox1.Items.Add(LB_md5.Text)
ListBox1.SelectedIndex += 1
Dim itemmd5 = LB_sha256.Text
'For Each line As String In ListBox1.Items
'My.Settings.itemsmd5 = itemmd5
'md5hashindexer += 1
'Next
End If
Dim sb As New System.Text.StringBuilder()
For Each o As Object In ListBox1.Items
sb.AppendLine(o)
Next
System.IO.File.WriteAllText("c:\checkedfilesmd5.txt", sb.ToString())
End Sub
Private Sub LB_sha256_Click(sender As Object, e As EventArgs) Handles LB_sha256.Click
End Sub
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs)
End Sub
Private Sub form15_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim lines() As String = IO.File.ReadAllLines("c:\checkedfilesmd5.txt")
ListBox1.Items.AddRange(lines)
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim sb As New System.Text.StringBuilder()
For Each o As Object In ListBox1.Items
sb.AppendLine(o)
Next
System.IO.File.WriteAllText("c:\checkedfilesmd5.txt", sb.ToString())
MsgBox("Dados Guardados")
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim lines() As String = IO.File.ReadAllLines("c:\checkedfilesmd5.txt")
ListBox1.Items.AddRange(lines)
End Sub
Private Sub Label6_Click(sender As Object, e As EventArgs) Handles Label6.Click
ListBox1.Items.Clear()
End Sub
Private Sub Label7_Click(sender As Object, e As EventArgs) Handles Label7.Click
MsgBox("Atençao Voce Vai Apagar Todos Os Dados Ja Escaneados")
ListBox1.Items.Clear()
System.IO.File.Delete("c:\checkedfilesmd5.txt")
End Sub
End Class
I got asked a couple of days ago how to save number of clicks you have done to each button in a program to a small file, to keep track of what is most used. Since it was ages ago i dabbled with visual basic i said i would raise the question here, so here goes.
There are 5 buttons labels Button1-Button5. When a button is clicked it should look for the correct value in a file.txt and add +1 to the value. The file is structured like this.
Button1 = 0
Button2 = 0
Button3 = 0
Button4 = 0
Button5 = 0
So when button1 is clicked it should open file.txt, look for the line containing Button1 and add +1 to the value and close the file.
I have tried looking for some kind of tutorial on this but have not found it so i'm asking the collective of brains here on Stackoverflow for some guidance.
Thanks in advance.
delete file first
new ver ..
Imports System.IO.File
Imports System.IO.Path
Imports System.IO
Imports System.Text
Public Class Form1
Dim line() As String
Dim strbild As StringBuilder
Dim arr() As String
Dim i As Integer
Dim pathAndFile As String
Dim addLine As System.IO.StreamWriter
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim fileName As String = "myfile.txt"
Dim appPath As String = My.Application.Info.DirectoryPath
pathAndFile = Path.Combine(appPath, fileName)
If System.IO.File.Exists(pathAndFile) Then
'line = File.ReadAllLines(pathAndFile)
Else
Dim addLineToFile = System.IO.File.CreateText(pathAndFile) 'Create an empty txt file
Dim countButtons As Integer = 5 'add lines with your desired number of buttons
For i = 1 To countButtons
addLineToFile.Write("Button" & i & " = 0" & vbNewLine)
Next
addLineToFile.Dispose() ' and close file
End If
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
writeToFile(1)
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
writeToFile(2)
End Sub
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
writeToFile(3)
End Sub
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
writeToFile(4)
End Sub
Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click
writeToFile(5)
End Sub
Public Sub writeToFile(buttonId As Integer)
Dim tmpButton As String = "Button" & buttonId
strbild = New StringBuilder
line = File.ReadAllLines(pathAndFile)
Dim f As Integer = 0
For Each lineToedit As String In line
If InStr(1, lineToedit, tmpButton) > 0 Then
Dim lineSplited = lineToedit.Split
Dim cnt As Integer = lineSplited.Count
Dim newVal = addCount(CInt(lineSplited.Last()))
lineSplited(cnt - 1) = newVal
lineToedit = String.Join(" ", lineSplited)
line(f) = lineToedit
End If
f = f + 1
Next
strbild = New StringBuilder
'putting together all the reversed word
For j = 0 To line.GetUpperBound(0)
strbild.Append(line(j))
strbild.Append(vbNewLine)
Next
' writing to original file
File.WriteAllText(pathAndFile, strbild.ToString())
Me.Refresh()
End Sub
' Reverse Function
Public Function ReverseString(ByRef strToReverse As String) As String
Dim result As String = ""
For i As Integer = 0 To strToReverse.Length - 1
result += strToReverse(strToReverse.Length - 1 - i)
Next
Return result
End Function
Public Function addCount(ByVal arr As Integer) As Integer
Return arr + 1
End Function
End Class
Output in myfile.txt
Button1 = 9
Button2 = 2
Button3 = 4
Button4 = 0
Button5 = 20
Create a vb winform Application
Drag on your form 5 buttons (Button1, Button2, ... etc)
copy that :
Imports System.IO.File
Imports System.IO.Path
Imports System.IO
Imports System.Text
Public Class Form1
Dim line() As String
Dim strbild As StringBuilder
Dim arr() As String
Dim i As Integer
Dim pathAndFile As String
Dim addLine As System.IO.StreamWriter
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim fileName As String = "myfile.txt"
Dim appPath As String = My.Application.Info.DirectoryPath
pathAndFile = Path.Combine(appPath, fileName)
If System.IO.File.Exists(pathAndFile) Then
line = File.ReadAllLines(pathAndFile)
Else
Dim addLineToFile = System.IO.File.CreateText(pathAndFile) 'Create an empty txt file
Dim countButtons As Integer = 5 'add lines with your desired number of buttons
For i = 1 To countButtons
addLineToFile.Write("Button" & i & " = 0" & vbNewLine)
Next
addLineToFile.Dispose() ' and close file
End If
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
writeToFile(1)
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
writeToFile(2)
End Sub
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
writeToFile(3)
End Sub
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
writeToFile(4)
End Sub
Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click
writeToFile(5)
End Sub
Public Sub writeToFile(buttonId As Integer)
Dim tmpButton As String = "Button" & buttonId
strbild = New StringBuilder
line = File.ReadAllLines(pathAndFile)
i = 0
For Each lineToedit As String In line
If lineToedit.Contains(tmpButton) Then
Dim lineSplited = lineToedit.Split
Dim newVal = addCount(CInt(lineSplited.Last()))
'lineToedit.Replace(lineSplited.Last, newVal)
lineToedit = lineToedit.Replace(lineToedit.Last, newVal)
line(i) = lineToedit
End If
i = i + 1
Next
strbild = New StringBuilder
'putting together all the reversed word
For j = 0 To line.GetUpperBound(0)
strbild.Append(line(j))
strbild.Append(vbNewLine)
Next
' writing to original file
File.WriteAllText(pathAndFile, strbild.ToString())
End Sub
' Reverse Function
Public Function ReverseString(ByRef strToReverse As String) As String
Dim result As String = ""
For i As Integer = 0 To strToReverse.Length - 1
result += strToReverse(strToReverse.Length - 1 - i)
Next
Return result
End Function
Public Function addCount(ByVal arr As Integer) As Integer
Return arr + 1
End Function
End Class
Have fun ! :)CristiC777
try this on vs2013
change If confition
line = File.ReadAllLines(pathAndFile)
i = 0
For Each lineToedit As String In line
If InStr(1, lineToedit, tmpButton) > 0 Then
'If lineToedit.Contains(tmpButton) = True Then
Dim lineSplited = lineToedit.Split
Dim newVal = addCount(CInt(lineSplited.Last()))
lineToedit = lineToedit.Replace(lineToedit.Last, newVal)
line(i) = lineToedit
End If
i = i + 1
Next
The TabLoad() function doesn't seem to be working on clicking of this dynamic button. The aim of this button click event is that it deletes text from a text file and loads the form again.
Below is the complete code. The TabLoad() function is in the NextDelbtn_Click sub at the end.
Also any suggestion regarding change of code is appreciated.
Imports System.IO
Public Class Form1
Dim str As String
Dim FILE_NAME As String = "D:\1.txt"
Dim file_exists As Boolean = File.Exists(FILE_NAME)
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
If TextBox1.Text = "" Then
MsgBox("Please enter text that you want to save", MsgBoxStyle.Information, "TOCC Error")
Else
str = TextBox1.Text
Dim fs As FileStream = Nothing
If (Not File.Exists(FILE_NAME)) Then
fs = File.Create(FILE_NAME)
Using fs
End Using
End If
If File.Exists(FILE_NAME) Then
Dim sw As StreamWriter
sw = File.AppendText(FILE_NAME)
sw.WriteLine(str)
sw.Flush()
sw.Close()
TabLoad()
TextBox1.Text = ""
End If
End If
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
TabControl1.SelectedIndex = TabControl1.TabIndex + 1
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
TabLoad()
End Sub
Private Sub Nextbtn_Click(sender As Object, e As EventArgs)
Dim s As String = DirectCast(DirectCast(sender, Button).Tag, Label).Text
Clipboard.SetText(s)
End Sub
Private Sub TabLoad()
Dim i As Integer = 1
For Each line As String In System.IO.File.ReadAllLines(FILE_NAME)
Dim NextLabel As New Label
Dim Nextbtn As New Button
Dim NextDelbtn As New Button
NextLabel.Text = line
Nextbtn.Text = "Copy"
NextDelbtn.Text = "Delete"
NextLabel.Height = 22
Nextbtn.Width = 55
Nextbtn.Height = 22
NextDelbtn.Width = 55
NextDelbtn.Height = 22
Nextbtn.BackColor = Color.WhiteSmoke
NextLabel.Tag = Nextbtn
Nextbtn.Tag = NextLabel
NextDelbtn.Tag = NextLabel
NextDelbtn.BackColor = Color.WhiteSmoke
NextLabel.BackColor = Color.Yellow
TabPage2.Controls.Add(NextLabel)
TabPage2.Controls.Add(Nextbtn)
TabPage2.Controls.Add(NextDelbtn)
NextLabel.Location = New Point(10, 10 * i + ((i - 1) * NextLabel.Height))
Nextbtn.Location = New Point(120, 10 * i + ((i - 1) * Nextbtn.Height))
NextDelbtn.Location = New Point(180, 10 * i + ((i - 1) * NextDelbtn.Height))
AddHandler Nextbtn.Click, AddressOf Me.Nextbtn_Click
AddHandler NextDelbtn.Click, AddressOf Me.NextDelbtn_Click
i += 1
Next
File.WriteAllLines(FILE_NAME,
File.ReadAllLines(FILE_NAME).Where(Function(y) y <> String.Empty))
End Sub
Private Sub NextDelbtn_Click(sender As Object, e As EventArgs)
Dim btn As Button = CType(sender, Button)
Dim s As String = (btn.Tag).Text
Dim lines() As String = IO.File.ReadAllLines(FILE_NAME)
Using sw As New IO.StreamWriter(FILE_NAME)
For Each line As String In lines
If line = s Then
line = ""
End If
sw.WriteLine(line)
Next
sw.Flush()
sw.Close()
TabLoad()
End Using
End Sub
End Class
Your problem appears to be that you're initializing new controls but you're not changing the controls on the form or even creating a new form.