Interface And Graphics :: Automatically Changes Value Within Textbox?
Feb 17, 2009
how can i automatically update my value when a user changs the combobox item. At the moment i have a button click when the user changes the combobox item and press the button the values get updated, everytime the combobox item get changed i have to repeat it click the button to update the value. I want something where automitically as soon as the combobox item selected the total value in the text box to change without clicking the button:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If ComboBox1.SelectedItem = "Seafood" Then
TextBox1.Text = 3.5 * ComboBox2.SelectedItem
End If
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Jan 24, 2010
I have a standard DataGridView. One of the columns is a DataGridViewComboBoxColumn. When I select one of the ComboBox items, I want to trap the change and add additional columns based on the item selected in the ComboBox. I've tried using CellValueChanged for the DataGridView column, and a bunch of other events, but none of them is fired when the DataGridViewComboBox value is changed. What event can I trap to make this happen?
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Nov 23, 2010
I'm trying to update a text field... in this manner:The main form (where I have the design):
Code:
Public Class Form1
Public Sub ChangeTextBox(ByVal vVal As String)
TextBox1.Text = TextBox1.Text & vVal
[code].....
First I click on the button to open the port. Then I do this code so whenever I receive data from a serial port connection, "Hello" string is written in the text field.. I debugged it, made sure COM Port is open, and data seems to pass to the textbox.. because when I put my mouse over to display the values inside the textbox it shows that "Hello" is stored.. and I tried doing the textbox1.refresh() but still nothing happens.. the textbox remains empty!
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Mar 9, 2010
i need plenty of textboxes in my program..i have already succeeded to create them easily
for y=1 to 9
for x=1 to 9
Dim square As New TextBox
[code].....
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Sep 1, 2010
my interface is like this, i've put 4 text boxes above, followed by a Generate Button in the middle and a multiline text box below the Generate button (please see the attachment)
so all i want is when i click the Generate Button, i want the data entered inside the above 4 text boxes to display in the multiline text box at the bottom in 4 seperate lines and not in 1 row. Also i would like to have some line spaces.
this is the code i used
Code:
' This is used to display in Bold
OutputTextBox.Text = "" & TextBox1.Text & ""
' This is used to display TextBox2.Text
[Code]....
Just wondering, is it possible to put some tabs above the big multiline text box at the bottom, say like 4 tabs and each tab consists of a big multiline text box inside it. And then when clicked the Generate Button which displays different data ...
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Sep 13, 2009
I have a problem setting focus to a textbox...My code is realy simple:
textbox1.visible = true
textbox1.focus()
But this dos not work...I am pretty sure it is because when calling focus(), textbox1 is not visible yet, ant thous, focus has no effect?
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Apr 12, 2010
Is there a way to enter text in a text box programatically, without the "changed" event being fired? Or do I have to use a flag to indicate that nothing should be done when the text is changed by the program?
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Oct 17, 2008
I'm working with adding some user-friendly options to a program that I've developed. A lot of these require handling painting the control myself. So far this hasn't been an issue except for this case.In a context menu, I have a text box that a user can type into. However, the context menu doesn't seem to let me input a label next to it so that the user knows what the text box is for. So, I wanted to paint the text box myself but I can't get the routine to work.I have tried to put the following code in the paint event for both the context menu and the text box itself. In the paint method for the context menu, the string and the text box show up at the top of the menu. Not 3 items down like it should. Also, I don't think the end result is truly a text box.[code]I believe that txtRect is set to the rectangle for the context menu and not for the text box itself. If you run this code, "Filter By:" should show up at the top of the context menu.
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Feb 21, 2010
I'm running Windows 7 x 64 and the latest version of VS 2008.I have spent forever trying to get the following VB6 code snippet to work in a VB 2008 Windows Forms application. The VB6 application works like a charm, even on Win 7 x64.Here is the relevant (I hope) VB6 code. It allows me to select text in IE8's browser window and then drag and drop it onto a TextBox called txtLink in a very simple VB6 application.
Code:
Private Sub txtLink_OLEDragDrop(Data As DataObject, Effect As Long, Button As Integer, Shift As Integer, X As Single, Y As Single)
[code]....
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Nov 16, 2011
I frequently use TextBoxes that expect date values. I do a tedious job every time to handle the Validating event. The Validation event ensures that the value is a valid date value according to the current thread's Calendar, and if so, formats the date to "dd-MM-yyyy".
I want a TextBox (e.g. DateTextBox) that automatically runs validation and formats its Text property. All I have to do is dropping it to the form.
I know I should use inheritance; but I do not know where to put the auto-validation code; and I do not know how to save the inherited class as a control in the ToolBox.
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Nov 19, 2010
Im working on a project that needs to print a report of one client.Everything went smooth untill i came across my multiline input text data.When i display it in the PrintPagePreview the text go's outside my page. Even when im printing it only the halve of my text is displayed. I googled and looked everywhere but i can't get a clear fix for it.
[Code]...
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Jan 22, 2011
I used to program with Visual Basic 6, so I have alot of old programs that I'm updating, plus I'm learning the new VB2008 methods. I'm writing a program that replaces the old "BitBlit" function which is no longer supported by Visual Basic 2008. It involves three picture boxes, one holds the sprite bitmap, a second holds the mask (silhouette) of the sprite bitmap, and a third has a background image.
[Code]...
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Aug 14, 2009
drawing text on a window which is not the current form's window.I remember doing this in Win32 api with getwindowdc(handle) to obtain a DC for the Window, then textout() on the DC.
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Jan 12, 2010
how to create a user interface in a game such as the application XFire using Visual Basic?
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Oct 19, 2008
I'm working on a design project where I have to use a Graphical User Interface that contains a drag and drop form. It consists of having a window dropped on a wall. Both of them are images to scale. I would like to know what kind of code I would have to use to show the x and y coordinates of one of the points of my window when dragged so when I drop it, I'm dropping in it on the desired coordinate of the wall.
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Jan 12, 2011
Ok, I want to create a class that will handle a special rectangle graphic.In my form, I want to have two of these special rectangles. So, basically, I need two instances of that class in my form, right?I manage to initialize two, alright. But, how exactly am I supposed tomanage drawing/graphics etc in a class, and the results to be displayed in my form?
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Oct 29, 2008
Using graphics paths for designing...but am getting an error when trying to add a shape to : _shapelist.add(createshape())
It says : Value of type 'system.drawing.drawing2d.graphicspath' cannot be converted to '1-dimensional array of system.drawing.drawing2d.graphicspath'
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May 18, 2012
I was wondering if I could elicit some tips on how to procede with an interface design approach.That is. What is a good way to go about establishing a "work area" where one can have multiple "floating forms" in this area.Can you have a form which occupies the entire windows desk top and the other forms "float" in this space? the "floating" forms would need to interact with each other where pressing buttons etc on them would affect other forms on the "workspace") Or what would be a good way to start accomplishing that? Or is there a better way to get the same effect?
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Apr 21, 2010
I'm trying to make a .dll that contains a lot of basic functionality that a program can use. Currently i am trying to use interfaces to make a lot of this functionallity independend of the program using it but i hit a snag. The Basic idea is that a programmer will create his own object using the interface discribed in my .DLL file. Then implements those functions as he likes. He can then instanciate a controller (found in the same DLL) and sends his custom object implementing the interface to that Controller. The controller can then be started and will take over all the work. I do not know what type of object is send to the controller and idealy i want to program it in such a fashion that i shouldn't care as long as the object send implements that interface.In code I am trying to achieve the following: (quite simplyfied)
.Dll:
Code:
Public Interface MyInterface '<----Decleration of the interfaceFunction GetData() As Integer
Function SetData(Data As Integer)
end interface
[code]....
this propperly. I know that the second i set the interface adaptor in the Controller VS comes nagging that it can not be converted to a "MyInterface" Class. Obviously i am doing something wrong. I can change the datatype that the controller expects to the "MyController" type but that would completely ruin the whole idea of flexibillity. I am hoping someone sees what i am trying to do and can point out where i made the thinking error.
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May 21, 2012
Is this where i would post a picture of my interface and get feedback on changes for easier use? If not is there someplace on this forum or any other forum to do this?
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Jan 19, 2011
So I decided to make my famous tile selector project, but instead of drawing in a form's graphics, do it inside a tabpage.Well, I managed to get it working, but it seems to... flicker.Normally, setting the form's DoubleBuffered property to True would help a lot there, but apparently, the tabpage has no such property.
When I invalidate the tabpage, I draw two images and fill one rectangle.Following past advice, those two images were created before, just once, and are stored in a variable so I don't create them every time I invalidate the tabpage.
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Aug 1, 2010
Ok I have this: This makes a sub called 'graphicspaint' then writes "demo version" to a picturebox1
Code:
Imports System.Drawing
Imports System.Windows.Forms
[code]......
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Dec 5, 2011
i whant do my own shadow effect. i can do the shandow. but how can i plus 2 bitmap images(1 above the other)?
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Oct 28, 2011
I load my picturebox with a jpeg. If I put my DrawObjects() sub into picturebox paint event.When ever a picturebox.refresh or picturebox.visible = true (vb.net seems to draw my DrawObjects() first, then load the jpeg Image over my drawing - erasing drawing) Is there a way to get the picturebox to redraw the jpg image first then draw on it, in picturebox paint event?
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Apr 4, 2011
Just want to know if it is possible to do an image mapping in VB2010?..
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Jan 5, 2010
I have a few class with public function and I want to know if someone know a program that can create automatically Interface solution from the class?
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Feb 16, 2012
I am using Visual Basic 2005 for an Operator Interface in an industrial setting. Where should I be looking to help make my Operator Interface even more eye pleasing and practical?
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Oct 4, 2010
I am having a datagrid in WPF application and I need to show the text wrapped in the cells. Basically I am reading from SQL server and displaying them in the Datagrid. Some of the fields having more than 255 character length and I want to show them as wrapped. To do this, I created my own style and trying to apply that to a data grid cell, but it is not working. [Code]
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Apr 11, 2009
I'm considering working on a video encoding framework. Essentially a program to re-encode a video file from one format to another, using codecs which are widely distributed. (Codecs commonly found on the average PC.)Emphasis would be on reformatting - rescaling, cropping - in a visual environment. Is vb.NET a good environment for such an application or would it be wiser to look elsewhere?
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Jun 18, 2009
I'd like to be able to graphically represent a position in a 3D graph and be able to rotate the grid to match a certain perspective. I've looked for tutorials online, but they all mention how to import or create common file types. I don't want or need to do this. I just need to know where to begin. I have the DirectX SDK, but I'm not sure where to start with it and need some direction.
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