MDI - Childforms - Application - User Can Choose Which Modul He Wants To Use
Oct 4, 2010
Here is a simplified hierarchy of a application I want to create:
1. Mainform - here should be a navigation pane, where a user can choose which modul he wants to use.
2. Childform Reports, Childform Maintenance, Childform To Do, Childform Management, ... - depending on which modul of the program the user wants to work with, a proper childform will appear as the main working part of the application
3. Childform CostReport, Childform TurnoverReport, Childform EmployeesReport, ... - if user wants to work with Childform Reports (chosen in 2. paragraph) he can work with one of these childforms.
I wanted to do this with MDI childforms, but visual basic keeps telling me that a form can be a MDI container only as a toplevel, which Childform Reports isn't. So i can make the program till 2nd paragraph but when i want to make the 3rd, its a problem.
I put the error here: "Top-level style of a parented control cannot be changed.
Parameter name: value"
Is there a workaround?
Maybe i could use TabControl for the 3rd paragraph, but its not that convient, since I want to use more "tabs" or forms...
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I new in vb.net and i try to call a function that exist in a module[code]...
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another method of doing this while keeping the event?:
Dim WithEvents FRestoreDB As New FormRestoreDB()
Private Sub BtnOpenDB_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnOpenDB.Click
[Code].....
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I made a pop-up blocker in my Visual Basic browser. Here is my code:
WebBrowser1_NewWindow
e.cancel = true
msgbox "Pop-Up Blocked!"
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I want to create an arraylist from MDI childforms and I did it like this:
vb.net
Dim sl As New SortedList(Of Integer, Form)
Dim i As Integer
Dim form As Form
For Each form In Me.MdiChildren
[Code] .....
It's working great, that means that if I delete a childform for example number 2 from all 3 then it creats first number 2 again and then number 4. Now the problem is that It only shows the childformnumber in the parentformtext instead of the name and number of that childform,like this: parentform - childform 1
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Apr 7, 2011
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
'Creates a string that holds the path to your file.
'this path uses the Special Dir .MyDocuments
'so on my computer LogPath = "C:UsersTechNoHickDocuments"
'on your computer LogPath might = "C:UsersKirbyDocuments"
Dim LogPath As String = String.Format("{0} est", My.Computer.FileSystem.SpecialDirectories.MyDocuments)
Dim FileName As String = "test.txt"
[Code]...
I am using visual basic 2010 express and would like to know how i can use a text box of sorts or windows explorer function to allow a user to save a file to a location of their choosing.At the moment a folder and .txt file is created in the mydocuments folder of the user's computer using this code
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Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCheck.Click
Dim conn As New OleDbConnection("Data Source= D:LeeABC.xls ;Provider=Microsoft.ACE.OLEDB.12.0; Extended Properties=Excel 12.0;")
Dim da As New OleDbDataAdapter("Select * from [Sheet1$]", conn)
Dim dt As New DataTable
Dim Row1 As Single
Dim Column1 As Single
txtRow.Text = Row1
txtColumn.Text = Column1
da.Fill(dt)
MsgBox(mycell)
End Sub
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E.g.
black
white
dimgray
gray
darkgray
silver
etc.
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Aug 19, 2010
I am going to show you how to create a browsefolderdialog. All this does it popup to the user and let them choose a folder.
For this you need:
1 Button
1 Textbox
Double click your button and add in the
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim BrowseFolder As New FolderBrowserDialog
[CODE]........
This sets your textbox1.text to what ever folder is selected. After that you can do whatever you want with your selected folder. This is how it will work when you are done: [URL]
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'speed variables
Dim CruisingSpeed As Integer 'cruise speed - updown box
Dim FlankingSpeed As Integer 'Flanking speed - will be cruise * 1.5
[CODE]..................
It says that it cannot convert the up down box into an integer... I need it as an integer to calculate the other number...
Complete code just in case the above was not enough info...
'Imports Excel
'Imports System.IO
Public Class Form1
[CODE].............................
I have some stuff commented out because a variety of issues - some I will end up using and some I will end up taking out before it is done...
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the below statment is right 100% but what i need is to change the word mobinil when the user choose another item from the combobox
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cmd.CommandText =
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