I need to pass a reference of a class instance to a new form; the newform obtains data from the user to be added to the class instance. How might I do this? Is there a way to pass it as a parameter via the ShowDialog call?
View 2 RepliesI have maintain a common data table for 3 forms.[code]...
View 5 RepliesI am trying to create a application scripting environment for my VB .Net application. I have a form type in the application called Project. What I want to do is dynamically compile (i.e Eval) VB .Net code on a Project form. This dynamic code always has a Main function. One of the arguments to Main is a reference to the calling Project form. Here is the Eval code:
Public Function Eval(ByVal vbCode As String, ByRef MyAssembly As System.Reflection.Assembly, ByRef ProjectForm As Project) As ArrayList
Dim Provider As VBCodeProvider = CodeDomProvider.CreateProvider("VisualBasic")
[code].....
I pass this class i created a variable by reference and i want that reference to be assigned to m_Text so that when i change m_Text it changes the TextValue variable i passed. Example:
Dim test2 as String = "ok"
Dim test as New GeneTextBox(test2)
'then some one changes the text in the GeneTextBox and i want it to change the test2 string...
Public Class GeneTextBox
Inherits Windows.Forms.TextBox
Private m_Text As String
Public Sub New(ByRef TextValue As String)
[code]....
trynig to pass data between form in first form [code]the problem is when i select "Yes" next form is not showing .i tried directly to run the last form. but its not added in the startup form list.i am getting error form2 is an type under windowsapplication1 and cannot be used as expression in application design.vb.
View 2 RepliesI have a form that holds dynamically created pictureboxes. I have a ContextMenuStrip that is opened when the user right-clicks an individual picturebox that allows them to change the Tag of that specific image. When they click the "Change Tag" item from the ContextMenuStrip, a new form is brought up allowing them to change the Tag in a Textbox.
My problem is, I can't figure out how to pass the specific picturebox's (that was right-clicked) Tag into the new form so that the user can edit it and set when they click the "set" button. (Named "Button1" below)
Here's what I have so far:
Form 1:
Private Sub ChangeURLToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ChangeURLToolStripMenuItem.Click
Dim myItem As ToolStripMenuItem = DirectCast(sender, ToolStripMenuItem)
[Code]....
I am converting some VB6 code which passed an unknown form object to a class, which then used the passed form object to reference the calling form and direct the data from the class as follows:
The Called Class in the class clsGetRecord
Public Function Execute(ByRef FRMForm as form) as booleanFRMForm.List1.Additem(SomeData)....Execute = SomeBool End Function
The clsGetRecord is used by many different forms which receive data all have objects called List1 as: The Calling Form for the form
frmThisFormPrivate function() as booleanDim objRecord as new clsGetRecordbRet = objRecord.Execute(frmThisForm)
The passed form object which will receive dataEnd function. Is there any simple way to do this since the calling form object is unknown at design time?
How to pass data from one page to another page in vb.net window form with database value?
View 3 RepliesI'm currently working on a form with a data grid that is bind to my database [ materials table ]
basically, the data grid is being used as inventory view of the materials
what i would like to do is when the user clicks/double clicks the data entry in the datagrid
the data would be pass to another form [ i would be using this as my edit/update and delete data ] [code]....
Just started VB programming this week and have found a wealth of information about what I'm trying to do. Problem is, some of it is more complete than others.Here's what I'm trying to do:In Form1 (my main form), I want to instantiate a class that contains a couple of properties (speed setpoint and position setpoint). When I click a button, I want to pass this data to Form2 and populate two textboxes on Form2 with the properties of this object. I want to manipulate the property values on Form2 and click an OK button which closes the dialog and returns the manipulated data, updating the property values of the object. Here's the algorithm I'm following:1) On Form1, instantiate the class2) On Form1's "Pass Data" button click event handler, instantiate a Form2 object and invoke the ShowDialog method, passing the object as a parameter.
3) On Form2, overload the ShowDialog method to accept the object as a parameter and modify the method so that it returns the manipulated class data.4) On Form2, in the ShowDialog method, populate the textboxes with the class data that was passed in.Here's where I get stuck. If I press the OK button on Form2 (DialogResult.OK), it returns me to Form1, but what hook do I have in Form1 to receive the manipulated class data that the ShowDialog method is returning?Here's an example of what I'm thinking about:
Code:
Public Class Form1
Dim clsController1 As New MotionController
[code].....
I'm sure it's probably a very elementary question, but every explanation I've found seems to be incomplete.
This seems valid (at least VB isn't complaining):
[code]...
My question/problem is how to do you pass the key into MyRef from the MyDict reference? Basically I'm wanting "NUMBERS" -> "1" output "One", "NUMBERS" -> "2" output "Two".
C++ DLL MiFare.h has
MIFAREAPI_API unsinged short MIFAREAPICC MF_ReadCardBlock( DWORD dwBlkAdr, DWORD dwRdrKey, DWORD dwKeyAB, DWORD dwRspBufSz, BYTE *pRspBuf );
my decalre in VB is
<DllImport("MifareAPI.dll")> _
Private Shared Function MF_ReadCardBlock(ByVal BlkAdr As ULong, _
ByVal RdrKey As ULong, _
[code]....
but i can't get the correct data?
Implementing a simple MVC in vb. The controller instance creates and holds instances of the model and view:
Public Class Controller
Public Property myModel As Model
Public Property myView As View
[code].....
I've been trying implement Constructor method in passing variable between two forms.Just a rough user interface guide - issue Invoice. User would type in all the Customer Name, Document Number. Once he reached Item Details, a Child Form would pop-up for the User to select/search the Invoice's Item; Once selected, the selected item would showed in the primary Form.
What I had tried is, the Constructor method worked perfectly when it is self-contain in a new project, yet to be implement in my application.But when I implemented, there is an error: Reference to a non-shared member requires an object reference.
[Code]...
So strings are reference types right? My understanding is a reference to the string in the heap is passed even when you pass the string ByVal to a method.
String myTestValue = "NotModified";
TestMethod(myTestValue);
System.Diagnostics.Debug.Write(myTestValue); /* myTestValue = "NotModified" WTF? *[code].....
And what is going on under the hood? I would have bet my life that the value would have changed....
I am working on a application that has quite a few functions involved and have been thinking of the following: If I have a function that has a few paramaters, is it more efficient to pass the objects to the function(Example 1) or reference the objects in the parent(Example 2)? Does it matter if the objects are large or not?
Example:
Class mainform
Public myGenericList As New List(Of String)
Public myDatarowArray() As DataRow
[Code].....
I am trying to click on certain rows in a datagridview and have the information in the rows sent to a textbox. It does not append each row to the textbox though, which is what I want it to do. it just replaces it with the row I click on. What's wrong with my code. I have tried cell click too.
Private Sub dgProducts_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles dgProducts.Click
Dim i As Integer
[Code]....
I�d like to pass data from my VB 2008 project to data fields set in Word. Can it be done and if so
View 10 Replieshow to pass value from one form into another form...? for example if i have 1 mdiform and 2 form (form1, and form2) for load form1 i'm using system.reflection.assembly here is the code for load form1 :
Imports System.Reflection
Private Asm As Assembly
Private FrmNama As Form
Public Function GetForm(ByVal FormName As String) As Form
[code]....
after form1 load i call form2 from form1 and from form2 i want pass value, here is the code from form2 to pass value into form1 :
form1.textbox1.text = textform2.text
why value from form2 can't fill into textbox1 in form1?
how to pass a value from an Independent form to a Child form...
here whis is the data from..
the indenpendent data is selected from the datagridview by just double clicking the cell the selected data will pass into the combox of child form (Note: this is combobox not textbox)...
i'm done with textbox it work fine..
look:
Independent form when user duble click the datagridview
Private BoxToUpdate As TextBox
Public Sub Start(ByRef DescItem As TextBox)
' Me.Close()
[Code]....
how could i able the value into combobox from independent form into child form...
I have one form, which the user enters upto 5 websites then clicks go - I have on the second form, the one with the webbrowser. timer which checks if the web browser is busy then either a green light or black image will be shown along side the assocaited input box on the first form. I am finding it impossible to feed variables into the clock through ByVal, like I would a subroutine or function.
[Code]...
i had no idea how to pass a value from one form to a database in another form...i was using the vb 2008...
View 2 Replieshow could i pass the value from Independent form to a child form..in my declaration from MDIParent form i declared child form as frmSMRP then in the frmSMRP i have declare one new form as form1
here is my code below.declaring child form under MDIParent form
[Code]...
Is it possible to pass a variable set in one form to another?
View 12 RepliesMy app has a main form (it's the startup form). It includes a number of menu items which typically open modal sub forms. However there are 2 menu items which just need to open an Outlook Explorer calendar for the user to manipulate appointments. My VB6 version used hidden sub forms to do this and handle the subsequent interaction between the user and the Outlook objects in the Calendar. I need to stop the user interacting with the main form while the Outlook Explorer is open, ie as if the Explorer window were a modal sub-form to the main form. So I manually disable the main form while the Outlook activity is going on, then (try to) enable it when the user closes the Outlook Explorer window. Problem is I can't seem to get a reference to the main form from the sub form to do this, nor pick up an event in the main form which I could use to trigger the enabling of the main form.An alternative might be to delete the hidden sub forms & put all the code in the main form, but this would be quite ugly; I think I would need to maintain two parallel sets of Outlook objects at the top level in the main form for each of the two functions (a number of the Outlook objects are declared With Events). I would have to have for example mobjOutlookExplorerFunction1 and mobjOutlookExplorerFunction2.
View 5 RepliesI need to pass data between a vb6 app and a .net app. This data will either be written or read every second. It is about 30 fields. Both apps reside on the same machine. I am currently passing this data via the registry and it works great but it makes me a little nervous. I would do it with a text file but I am worried about data loss.
View 4 RepliesAssuming that I have a datagridview or a listview populated by value (form 1), then here I have a command button to edit (form 2, details in text boxes) a selected record from the grid or listview, now, the edit process is done, how can I then, pass these values to datagridview from the other form (form 1) and update or refresh the grid then close the form 2 as if it is not been opened?
View 6 RepliesI have a problem with passing the value from a Form that "user should choose a start date and end date" to a Form that display the result in a Crystal Report Form[code]...
View 1 RepliesHow to pass a textbox value in one form to a variable in another form. i want to store "UserName"(textbox value) from the "UserAccount" Table to a variable in the "invoice" form.
View 15 RepliesI have one form Form1, which opens another form Form2 from within one of its procedures.Now Form2 needs to do some processing of data, and populate a list. The user selects a value in this listthe value back to the already open Form1 (not to a new instance of Form1). How do I accomplish this?I think I will need to define and raise events for this, but I don't know how to go about it.
View 1 Replies