I am fresher in Vb.net 2008, but I am going to develop a inventory programme where i have a main form which contain menustrip and toolbar, In this case I am using MDI Form is it ok ?
2nd Query is I want to use Windows API Funciton for creating form's size and form's background image so that it can be adjusted with any size of computer screen.
how to call a function from a different form. Like the button click event. i have this scenario. I have a main form and a child form in the main form there is a navigation panel on the left side controlling the child form. What i want is if clicking the add record in my navigation panel will call a function in the child form to execute.
View 1 RepliesI want to make an numerical integration method with takes in an analytic function and integrate it over a specific interval. For the numerical integration procedure I want to use some procedures in nr.com. The problem is that these are programmed in C++ and they uses functors to pass a function to the integration method. How can I do this in VB 2010?
I want to initialize the function (i.e. set a=1,b=0 for function y(x)=a*x+b) and then pass the function to the integration method. Then when the integration method call the function it only calls the function with one parameter (i.e. x since a,b is already set)
What is the best way to do this in VB2010?I want to make a general integration method where I can pass any single valued function and integration limits.
I have just started using VB, and from what I have found so far it seems like the tools you have is
- to us a delegate for the function
- to use a lambda expression for the function
- send a pointer/adressOf
- to create a function class/structure and submit this to the function
As for now I am most inclined to create a function-class. But I am not really sure how.F.ex. I make different classes for each "uniqe function" I want to integrate, but how can I pass them to the integration function when I need to specify the argument type in the integration-function-call?This seems like a basic problem which applies to many Math operations, so I think it would be very useful to clarify this.
I'm trying to undersatnd the syntax of calling a funciton and it seem confusing when I'm using a web service in ASP.net. Maybe this question should be in an ASP forum, but it is a VB question. This simple web service allows you to type in your name and it response with an alert box with you name.
My question is, How can you call a function with 2 arguments when the function is only defined for one. I understand that the second argument is actually a method that handling the respons, but how can you interchange function arguments for methods and how do you know that there are methods for
Here's my call:
<script type="text/javascript">
function HelloWorld()
{
var yourName = $get('txtYourName').value;
[CODE]...
I am having some problems with my code as I cant do this following in VB.NET or C# because there is no form1.submit() function in VB.NET or C#?
CODE:
Why is this or how would I be able to do this in VB.NET or C#?
I have defined a function on one form. I need to call that function again on another form. is there any way i can do it without redefining the function again and again?
View 12 RepliesIs it advisable to call a function from another form?Does it have any side effects on the system while running, like more process will consume?I have a function that will set the background in a form, it will make the image stretch, backcolor transparent and will set the picture. If I will use that function in other 15 FORMS I can minimize my code.
View 9 RepliesHow do I let the function in a form run in the background without slowing down/stopping my entire application until it has finished?
View 7 RepliesI have a MDI form where I have a status bar at the bottom of the form. It has a literal representation of several Function Keys. When I first load the MDI form and press any of the function keys, they all work like they're supposed to. However, if I have a Child form active and then try and press one of the function keys...nothing happens. What do I need to do to overcome that?
View 2 Replieswritten a generic "LaunchForm" function? For all the menu items I have that open a form, I would like to write one function that will launch the form as opposed to writing the same code several times.
View 2 RepliesI downloaded VB Express 2010 and trying to access a variable array I created in the main form1 private section in another form / function. [code]...
View 3 RepliesI have a class inhert ToolStripButton. it builds a new toolstrip button. the button will be added to the toolstrip which is on main form.
I will need call function in the main form. what's the right way to do this?
now, I pass the main form when create the class. but I guess the right way is to raise the event in main form.
but, how about the properties in main form?
if I raise the event, will it run the event first, then go to the next line of the class? or, just raise event, then go to the next line in the class immediately?
I have defined a function on one form. I have to call that function again on another form. Is there any way I can do it without redefining the function again and again?
View 2 RepliesI have a form that displays a graph. From the appropriate toobar button click frmGraph.show is called and it works. But when I call it from the assigned F6 function key the graph hardly ever displays. Sometimes it does display properly, sometime it flickers a one time display of the graph then it's gone, but mostly the form just draws the background but no graph. In debugging this i discoverd that putting a message box just before the call to frmGraph.show the graph will display properly everytime after i click ok in the messagebox. Anyone know how to cure this or at least a workaround that doesn't involve displaying the messagebox? This is the code with the messagebox("here") just above the call.
View 8 RepliesActually I am trying to get a function to validate all the textboxes in my form. At the moment, my code look like:
Private Sub Textbox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Textbox1.textchanged
If Textbox1.Text.Length = 0 Then
MsgBox("TextBox1 is empty. Please enter something", msgboxstyle.okonly)
Textbox1.Focus()
Endif
End Sub
I have to write the same line of code for each textbox to check if it is not empty and was thinking of using a function that will be called and check each textbox in my form.
How hard would it be to graph a curve of a function in a VB form.
Attached is a graph from excel which is exactly what I need to do.
I have the function of some fluid properties and I'd like to choose a min and max temp then have the function graphed, with temp as the x and the fluid property as the y which would auto scale to fit the curve.
Actually now the program i have to return the properties at one temp is just a GUI front end to call a fortran program to return the properties so actually if I just use that it'd be graphing points and not directly from the function. I can always make it completely VB based if graphing from a function is easier than points. It'd be a slight pain to rewrite all the code for the functions though.
How can I call function of the form_Load? I have tried this code but it is not working. [code]
View 13 RepliesI have a form that the user must enter some important information and the only way of leaving of that form is to enter the correct info. By mistake I close that form from the X on the upper right side realizing that my code restrictions on that form was not enough. How can I disable close (X) of that form? I checked the form properties but I couldn't find anything about that just to disable maximize and minimize.
View 7 RepliesCan I pass a form as a parameter in a sub like public Sub GetData(Byval Frm as form) and access its controls?I have few forms (you can say: FrmAccounting, FrmEngineering, FrmIT) with almost the same controls in each of them (txtEmployeeID, txtEmployeeName, optMale, optFemale etc), where no two forms are open at same time, and each of those forms have a Button which opens a new Form (you can say FrmCollectData) now I want to fetch data in FrmCollectData depending on which form it was opened from.. like if user was on FrmEngineering and it clicks button to open FrmCollectData.. form collectData fetches data from FrmEngineering Controls and if user was on FrmAccounting and it opens FrmCollectData, form Collectdata fetches data from FrmAccounting..
earlier, in VB6.. In one of the Sub written in frmCollectData I checked which form is opened by setting flags in each of forms (frmEngineering, frmAccounting etc) and then I passed the same form in a sub which writes data in frmCollectData controls.. but am not able to do the same in VB.NET.
I have a Function for checking the input in a textbox and only allowing Numeric & Backspace; everything works fine so far. My form is for financials and it has about 20 textboxes; they all receive Numeric only data; there is NO alpha data on the entire form required. Note in the snippet below that I don't even need a decimal point as well.
Is there a way to handle ALL textboxes on this form without having to place the Function call in each textbox KeyPress event. took a long (5 year) hiatus from developing VB6
Public Function TrapKey(ByVal KCode As String) As Boolean
If (KCode >= 48 And KCode <= 57) Or KCode = 8 Then
TrapKey = False
[Code].....
Using VB.Net
I am having the form name as "Employee Entry"
User want to open a Employee Entry from in 5 tabs...
For Example
When the user open a Employee Entry form, while entering the details at that same time, user again open a employee entry form (2nd Employee entry form show like a new employee entry from with out any details)[code]....
Is there a way that I can use like F1, F2, F3, etc to open a specific form? I would like to have an options form but not have it to where anyone can access it unless they know the Function key to use.
View 1 Replies[Code]...
i have a function that i have in my data access class now i want to access it then declare and assign parameters and then insert data into database.
how to use the timer to control the blinking? Cuz i tried to stop one timer, it did stop this timer but if i didnt stop the timer 1, both timer 1 and timer 2 will begin although the data is in different entity. By right if the alarm comes in from block 2, only block 2 button will blink, like wise if the alarm comes in from block 1, only block 1 button will blink
the below is my code:
Imports System.Data.SqlClient
Imports System.data
Imports System.Drawing.Image
[Code]....
I am using Visual Basic 2005. The program I am creating can either bring up a form (with a bunch of buttons, listboxes and a picturebox) and the user can enter file names onto the form OR the user can drag file names from Windows Explorer and drop the names on the program icon to start the program. During the execution of the program, messages are displayed in one of the listboxes.
All this works fine except for part of the drag/drop scenario. When the drag/drop is done, the form is not fully loaded when the code function starts to put out messages. This means the user may not see any of the messages until all is complete. I have tried putting my executable code in the Form1_Shown() and even added a timer to slow things down a little, but nothing seems to work consistently.
I guess, I am in some kind of trivial problem. Here is the scenario, I have a Form which has 3 main control two buttons "Button1" and "Button2" and 1 tab page control with two tab pages "Tab1" & "Tab2". Now Tab1 has one textbox controlled say "TextBox1" and one check box "chkBOX". What I am trying to do is, when I click Button1, only one tab page i.e Tab1 should be visible. Which I done using ".Clear" and ".Add" and is working fine. And now when I click on Button2, it should display the text in TextBox1, for this I have used:
msgbox(TextBox1.Tex)
Till now it is working fine. But when ever I use msgbox (chkBOX.checkstate), it displays 0, irrespective of control being checked or not.
Just had a small doubt.Say i use something like this
vb Dim ownr as New Form1Dim Dlg as New Form2ownr.Showdlg.showdialog(ownr)
how should i call an public function of form1 in the form2 if form1 is owner of form2, and also if form1 is not the owner of form2 should i use FormName.FunctionName in both the cases.
Dim img As New Windows.Forms.PictureBox
img.Location = New System.Drawing.Point(newx, newy)
img.BackgroundImageLayout = ImageLayout.Zoom
img.Size = New System.Drawing.Size(100, 100)
img.Name = "img" & t
I need a mousedown function to cover all the images that are produced by the above code.The following code only affects the areas that aren't covered by the images. I just need something that covers the whole form
Private Sub main_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyClass.MouseDown
MsgBox(Me.GetChildAtPoint(e.Location))
End Sub
For a small project I need the possibility to "trigger" a function in a Window-form-application from a Service. So there are 2 program's. One is the visible Form application with textboxes and buttons and so on... The other is a sort of service program that runs on the Windows Service account.
Actually the second program is a command-line tool that gets fired by a PHP script from the Apache server. Because the command-line tool runs in another "environment" then the Windows-form-App, it is NOT possible to communicate (trigger) with both apps.
I know I have to use IPC (InterProcess Communication) and I have download the dozens of sample apps, but I still can't get it to work.
PLEASE can someone give me some sample code, or perhaps sample program(s) to help me out?
I think it's really easy to build what I want, but for me it's a no-go :-(
So for example it has to work like this:
PHP script (running at Apache server) runs a "console/service" app (already working) which "triggers" (via IPC) a already running Windows-Form-app (also already working app) that for example shows a MsgBox with the text in it that is sended by the "console/service" app.
I need drop one item from one panel to another using a drag and drop feature. These items move from different cycles so need to drag and drop it into new cycle/column.
View 2 Replies