I have a series of groupboxes on a form, lets say 2 for this example. Each groupbox has an associated "Add" button located on the form, that when clicked will add the following dynamic controls inside the group box; Label, textbox and a Delete button aligned in a row.
I have button click handlers for the Add buttons on the form. I also have handlers for click events for the labels (the labels represent status green for good and red for not so good). I also have a handler for the dynamically created Delete button located in the groupbox.
Here is my question: Can I reference the groupbox where the delete button was clicked? I am trying to eliminate repetitive code.
I have:
Dim button As Button = CType(sender, Button).
.
.
and I want to change "groupbox1.Controls.Remove(groupbox1.Controls.Find(("txt_" & index), True)(0))" to the following:
button.parent.name.controls.remove(button.parent.name.controls.find(("txt_" & index),true)(0))
if I click the delete button in groupbox1 then the corresponding row will be removed from groupbox1, and if I click delete button in groupbox2 that row will be removed using the same code block..
The way its setup now, I'll need to have a nested if for every groupbox container on my form - which eventually will be five.
Some of the code is not mine but sourced from various sites on the interweb.. Any help would be greatly appreciated.
CODE:
Public Class Form1
Private Sub lbl_click(ByVal sender As Object, ByVal e As EventArgs)
Dim label As Label = CType(sender, Label)
'determine index of Label
Dim lblindex As Integer = Integer.Parse(label.Name.Split("_")(1))
label.Text = lblindex ' only for testing will be removed when final
' Flip the background color red <--> green
If label.BackColor = Color.FromArgb(170, 0, 0) Then
label.BackColor = Color.FromArgb(0, 255, 0)
Else
label.BackColor = Color.FromArgb(170, 0, 0)
End If
End Sub
Private Sub btnDelete_Click(ByVal sender As Object, ByVal e As EventArgs)
''Reference the Button which was clicked.
Dim button As Button = CType(sender, Button)
''Determine the Index of the Button.
Dim index As Integer = Integer.Parse(Button.Name.Split("_")(1))
Dim count As Integer = groupbox1.Controls.OfType(Of TextBox).ToList.Count
''Find the TextBox and Label using Index and remove it.
Groupbox1.Controls.Remove(Panel1.Controls.Find(("txt_" & index), True)(0))
Groupbox1.Controls.Remove(Panel1.Controls.Find(("lbl_" & index), True)(0))
Dim controlIndex As Integer = Integer.Parse(button.Name.Split("_")(1))
'Remove the Button.
Groupbox1.Controls.Remove(button)
'Rearranging the Location controls.
For Each btn As Button In groupbox1.Controls.OfType(Of Button)()
Dim controlIndex As Integer = Integer.Parse(btn.Name.Split("_")(1))
‘ do some stuff
Next
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
For Each Ctrl As Control In Controls
If TypeOf Ctrl Is Button Then
AddHandler DirectCast(Ctrl, Button).Click, AddressOf addbtnclick
End If
Next
End Sub
Private Sub addbtnclick(sender As Object, e As EventArgs)
Dim textbox As TextBox = New TextBox
Dim label As Label = New Label
If DirectCast(sender, Button).Name = "GB1addbtn" Then
Dim pmcount As Integer = Groupbox1.Controls.OfType(Of TextBox).ToList.Count
textbox.Location = New System.Drawing.Point(35, (35 * pmcount) + 30)
textbox.Size = New System.Drawing.Size(80, 20)
textbox.Name = "txt_" & (pmcount + 1)
label.Location = New System.Drawing.Point(5, (35 * pmcount) + 30)
label.Size = New System.Drawing.Size(25, 25)
label.Name = "lbl_" & (pmcount + 1)
label.BackColor = Color.FromArgb(170, 0, 0)
Groupbox1.Controls.Add(textbox)
Groupbox1.Controls.Add(label)
' 'Create the dynamic Button to remove the TextBox.
Dim button As Button = New Button
button.Location = New System.Drawing.Point(120, (35 * pmcount) + 30)
button.Size = New System.Drawing.Size(85, 30)
button.Name = "btnDelete_" & (pmcount + 1)
button.Text = "Delete"
AddHandler button.Click, AddressOf Me.btnDelete_Click
AddHandler label.Click, AddressOf Me.lbl_click
Groupbox1.Controls.Add(button)
ElseIf (DirectCast(sender, Button).Name) = "GB2addbtn" Then
Dim dcount As Integer = Groupbox2.Controls.OfType(Of TextBox).ToList.Count
textbox.Location = New System.Drawing.Point(35, (35 * dcount) + 30)
textbox.Size = New System.Drawing.Size(80, 20)
textbox.Name = "txt_" & (dcount + 1)
label.Location = New System.Drawing.Point(5, (35 * dcount) + 30)
label.Size = New System.Drawing.Size(25, 25)
label.Name = "lbl_" & (dcount + 1)
label.BackColor = Color.FromArgb(170, 0, 0)
Groupbox2.Controls.Add(textbox)
Groupbox2.Controls.Add(label)
' 'Create the dynamic Button to remove the TextBox.
Dim button As Button = New Button
button.Location = New System.Drawing.Point(120, (35 * dcount) + 30)
button.Size = New System.Drawing.Size(85, 30)
button.Name = "btnDelete_" & (dcount + 1)
button.Text = "Delete"
AddHandler button.Click, AddressOf Me.btnDelete_Click
AddHandler label.Click, AddressOf Me.lbl_click
Groupbox2.Controls.Add(button)
End If
End Sub
End Class
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