Drag From Windows Forms Textbox To .NET Code Window?
Oct 6, 2009
I have written a little helper app that mostly does various text operations on a paragraph of text. I am able to select a block of text from the Code Window and drop it onto my VB.NET apps TextBox and complete the text operation. However I am unable to drag and drop the altered text back to the VB Code window Via the DoDragDrop method.
If e.Button = MouseButtons.Left Then
Dim d As New DataObject
d.SetText(Me.TextBox3.Text)
Me.TextBox3.DoDragDrop(d, DragDropEffects.Move)
End If
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Jan 5, 2010
I have a border-less window made by this function:
Private Sub MiniWin()
Me.Visible = False
Me.Text = ""
[Code]....
and when is in this state I can't move it... so how can I move the form when is in this condition?
Second Q: how can I forbid the window form not to be re-size-ble and stay within the given dimensions?
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Jul 12, 2011
I have the following sub in a windows form:
Private Sub BTNC_storeclientdata_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BTNC_storeclientdata.Click
' Update Clientdata[code].....
This performs an update in the SQL Database via a stored procedure. When I add '; insert into codeinjection(test) values ('CodeInjected!'); select ' in the last textbox (TBC_phone.Text) the value 'codeinjdected' is inserted into the table codeinjection as well. How can I avoid this?
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May 8, 2009
will give me information if the foregroundwindow is being draggedor not something for example GetDragState(Foregroundwindow)does any API of this kind even exists?
Also, I'm working with this code to get all main window handles:
For Each proc As Process In Process.GetProcesses
If (Not proc.MainWindowHandle = 0) And (proc.MainWindowHandle <> ExceptWin) And
[code].....
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Mar 31, 2011
same errors or something related to System.windows.forms. Unable to cast object of type 'Public_Information_System_Remake.PIS' to type 'System.Windows.Forms.TextBox'.
[Code]...
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Jan 19, 2010
I'm porting code that I wrote for use in a Windows Forms application to a Windows Service, but for some reason, the code that worked in the Windows Forms application is now throwing errors in the Service
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Apr 13, 2011
I have an application developed in VB.net with 3.5 framework. I have disabled close (X) button on the main form of the application while doing some processing. I have achieve disabling by "Overriding ReadOnly Property CreateParams()" of the form. This is working fine as both control button on form and close option on right click in the taskbar shows disabled. This fulfill my needs on the Windows XP OS but not on Windows 7 OS. As in Windows 7 right click on application icon in taskbar shows a different menu, which has a new "Close window" option.
The close in original menu still shows disabled (this old menu is hidden but can be shown by holding Shift key and right click on the application icon in taskbar). Now I need to disable this "Close window" option as well and only for my application.Is there a method through which I can do this programmatically.
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Oct 12, 2010
So in my window onLoad method I am pre-populating a grid with values retrieved from a database. Here is the method below for the window load:
Private Sub winMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
''#Load Grid
Dim dt As New DataTable
With dt
[code].....
What happens is, when I press F5 to debug, the program loads, and the grid is still empty, just as it is without a datasource. When I try to step through the code, it actually reaches down to the line that reads
Budgets = BudgetManager.Process.Budget.GetAllBudgets()
and then stepping over this line...the window loads and it doesn't go any further in the method. What the line of code above does is eventually make a execution call of some SQL to a SQLite database, and the code gets to the point at which it calls the execute method, but doesn't even make the query yet. All the objects up until that point in the code are set properly as well (found through debugging and checking locals.)Edit:Exception is this:
"Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.
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Apr 28, 2009
I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..
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Oct 4, 2011
"TEXTBOX is not a member of SYSTEM.WINDOWS.FORMS.TEXTBOX"
Why it is that the text boxes have errors like this even they are in the tax forms..
Label13.Text = sss.Text - philhealth.Text - pagibig.Text
Label18.Text = semiSalary.Text - Label13.Text
[CODE]...
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Aug 19, 2009
I am trying to add a line of text to a TextBox component in VB.net, but I cannot figure out for the life of me how to force a new line. Right now it just adds onto what I have already, and that is not good.I have tried copying the actual linebreaks, didn't work. I tried AppendText(), didn't work.
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Jun 9, 2011
I can't seem to get input focus on a textbox when a tab page first comes up (I'm using Windows Forms, VB.NET 3.5). I have a textbox on a panel on a tab page, and I want the focus to be on the textbox when the tab page comes up. I want the user to be able to start typing immediately in the focused textbox without having to click on the textbox. I have tab stops set in the order I want and the textbox is the first tab stop. The tab stops work except that when the tab page comes up the focus is not on the textbox, i.e. the one that's first in the tab order.
In the Enter event handler of the tab page I call the Focus method of the text box, but it returns False and does nothing, no error messages. I know I can access the text box because at the same point in the code I can set the text of the text box.If it matters, the layout of the tab page is a little complicated:[URL]..I want to set the focus on TextBox1.
What's the best way to get the focus on the desired textbox? If setting focus is the best way, why is the textbox.Focus() method failing?
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Sep 19, 2011
I am looking to put the end value of this code below in the TextBox.
Imports System
Imports System.Management
Imports System.Windows.Forms
Namespace WMISample
[Code]...
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Nov 2, 2009
How do I make a connection between a button and textbox when using windows form applications. In other words, if a button is clicked on, how do I assign it to read that certain textbox where the information was entered?
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Apr 5, 2012
I am creating a program that shows two random numbers on two separate labels then I have to add / subtract them and the answer should be entered in a textbox
How can I add or subtract the numbers and enter the answer on a textbox?
I am creating it in Visual Basic Windows Forms Application
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Oct 5, 2011
I've got a Windows Forms with some Textbox's and I'm trying to make a one of them which can automaticly (or if you press Enter) change letter D to today's date, to make user life easier.
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Mar 5, 2009
I'm using the following code to validate the text entered by user. It works perfectly fine. But I want to add the backspace feature so as to allow the user to delete the wrongly entered number.I have tried a couple of things and they worked but before last digit (after the decimal point) i.e. it does not allows to delete after the number has been completely entered.number is being entered in the format: 12313213.45
What shall I do?Private Sub TextBox5_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox5.KeyPress
[Code]...
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Sep 16, 2009
I work in IT in a firm that are rolling out a time management application on all PCs. In order to clock in/out a user must log into the application and click clock in/out. I want to build a very simple application that when a user goes to shut down or log out of their PC, a windows form will pop up asking them if they they want to clock out of the time management software (a reminder if they have forgotten to clock out and are heading home). On the form there will be two buttons, 'yes' and 'no'. If they click yes, the system shutdown or log off will be halted and the time management software application will open automatically. If they click no, the shutdown/logoff will proceed as normal. I just need to know what i need to do to get the system shutdown/logoff to stop until either button is pressed and to stop totally if the 'yes' button is pressed. I am able to get the Time Management software to run on a button click but just not able to halt the shutdown or logoff?
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Mar 26, 2012
Private Sub OK_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles OK.Click
Dim con As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;data source=C:UsersChristopherDesktopCanalside Theatre.accdb")
[code]....
As a part of a booking system I need to produce for my module, I have to create a login form that connects to a Microsoft Access Database. So far, I've created one that works without error, but it lacks certain functionality I can't wrap my head around.
I have a 'Login table' in my database with three fields: 'Username', 'Password' and 'Manager?', the last of which uses a 'Yes/No' datatype. Currently, the system can check whether or not the details are held in the database, and if so, it will direct the user to a different form.However, is it possible to have it so that the system can check what the database record has for the 'Manager?' field, and to direct the user to a different form accordingly?
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Jan 7, 2012
I started making an application that would perform matrix multiplication. For that I need to take in the matrix data(row,column, elements). I've asked the user about number of rows and columns in a form. I then send him to another form which will contain row*column number of textboxes used to enter the elements.After reading a bit about the TextBox Class I used the following code to create the variable number of textboxes.[code]How do I get the data that the user enters into these boxes ? Using the usual textbox.text gives me a build error.
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Feb 17, 2010
I am new to Win Forms, I have a scenario here..When User enter ID in a textbox, I want to check that value in database and get the name for that ID before submitting the Submit Button.
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Mar 18, 2009
I am using vb.net 2008,how to create a misc properties for a textbox in windows forms?
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Apr 28, 2010
ERROR:Error'Value' is not a member of 'System.Windows.Forms.TextBox'.
My Code:
Private Sub TextBox2_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox2.TextChanged
If TextBox3.Value > TextBox2.Value Then
[Code].....
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Oct 6, 2009
I use the code about video capture of this site, it ran very well ! VB Helper: HowTo: Capture video from a video device such as a Webcam with VB .NET But I want to change the interface of form then after I customize my new one with button, picturebox (with the right name), copy the code again except this paragraph #Region " Windows Form Designer generated code "
[Code]...
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Jan 23, 2010
Private Sub wb_Scrape(ByVal sender As System.Object, ByVal e As
[Code]...
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Jan 27, 2012
OK, so my project is like this:The user selects a folder from their computer that holds a list of subfolders. The program then dynamically inserts a check boxes per subfolder within a seperate cell of a Table Layout Panel.I want to and a simple Click event to each checkbox control so that when a control is clicked, it counts all of the check boxes on the form that are checked.How do I go about adding the event handler to the checkboxes when they are created. Here is the code that adds the checkboxes:
Dim iCol As Integer = 1
Dim objFolder As Object = Nothing
For j = 0 To rCount - 1 '0 to dynamic number of rows
[code].....
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Feb 11, 2009
I'm trying to count characters in a textbox, which includes newline characters and tabs. How do we know if the textbox contains only newline characters? ie or if the user types in one or more characters, then a bunch of "newline" characters (CR followed by LF) and then goes back and deletes the original one or more characters leaving only the leading "newline" characters. I don't want to count the characters in textbox only if new line exists..
If String.IsNullOrEmpty(TextBox1.Text) Then
Label5.Text = 0
Else
[CODE]...
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Apr 18, 2010
I'm an absolute newb to vb (less than a week) and I'm trying to convert a console app to a windows form.In the console app, I have this code
Public Sub rconPacketReceive(ByVal fromserver As Boolean, ByVal isresponse As Boolean, ByVal seq As Integer, ByVal words() As String) Handles rconObj.packetIncoming
Dim w As String = Nothing
For Each word In words
[code]....
What I want is to have this Console.WriteLine displayed in a text box on the form but don't have any idea on how to do it.
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Jan 28, 2012
Assuming that I have a Windows Forms textbox and want to reduce the maximum amount of characters that can be allowed in via user entry, how would I do that?
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Feb 11, 2009
Ive been working on this project of mine for some time now... though im not involved in IT in my current company, im just trying to help to at least have their system computerized (they are still doing it manually by paper & calculator)... I have one problem though which made me stick for 2 days (and still counting) without progress...How To Drag & Drop Between 2 Datagrids Between 2 similar MDI Child Forms
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