Pass Data To Dialog - Manipulate And Pass Back?
Jan 15, 2010
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.
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Jul 9, 2011
Trying to find some code to assist with accessing a web service. I am a newbie when it comes to web services and don't quite get the whole how to submit the request and then read the results. I know from searches that people request a copy of the WSDL file so I have attached (SystemManagementService.wsdl)
[Code]...
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Apr 27, 2009
I have created a class with a function in it. I have a collection of data I want to pass back. I tried an arraylist first. Now I am trying to use a dictionary. My problem is that it creates the dictionary ok, but I am only get the last row of data from my
Function GetWeldAuditInfo(ByVal ResourceId
As
String,
ByVal VendorId
[CODE].........................
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Mar 4, 2009
I've been pulling my hair out on this issue, and I can't find any topics that seem to help on this one.
I have a 3rd party unmanaged C++ DLL function which takes a string (char *) as one of its parameters then modifies that string internally.[code]...
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Mar 4, 2009
I have a 3rd party unmanaged C++ DLL function which takes a string (char *) as one of its parameters then modifies that string internally.[code]...
Currently this code runs without exception, but desc shows 40 spaces when displayed to the messagebox. I've tried StringBuilders, but they don't seem to work. I've also tried changing the 2nd parameter to be ByRef but this causes a read/write memory exception.
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Aug 9, 2009
I have the following [code]...
I thought make this would make my ada.myString have "working!" on the main appdomain, but it doesn't. I thought that by inhering from MarshalByRefObject any changes made on the 2nd appdomain would reflect also in the original one(I thought this would be just a proxy to the real object on the main appdomain!)?
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Mar 24, 2010
I have a form and from this I call
dialogPrintDiet.ShowDialog()
which launchs my dialog. I need to pass a string value and need the easiest way to do this in VB.NET .
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Aug 14, 2009
Is there a way to pass variables into a form that is shown as a dialog?Dim frmCreateCSVFile As New CreateCSVFile Dim returnValue As DialogResultreturnValue = frmCreateCSVFile.ShowDialog()
It doesn't seem to find the variables when I use the form name.
dtpFirstEndDate.Value = ControlChartsCSV.dtpFirstEndDate.Value
dtpLastEndDate.Value = ControlChartsCSV.dtpLastEndDate.Value
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Apr 13, 2011
What's the simplest way to pass a variable back and forth between 2 forms?Let's say I have form1 and form2. Form2 has textbox2 and button2. When button2 is pressed I need the text in textbox2 to display in textbox1 on form1.
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Aug 29, 2011
Can I pass parameters back and forth between a Windows Service and .NET program? For ex: I want to pass a compressed/encrypted byte paramater to the Windows Service, who then decompress/decrypt it and return back the decompressed/decrypted bytes.
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Jun 8, 2012
I have two tables:
table1
case_no flow result
tc_1 001 pass
tc_1 002 pass
tc_1 003 pass
tc_2 001 pass
tc_2 002 fail
tc_2 003 pass
table2"
case_no result
tc_1 pass
tc_2 fail
Table2 should be updates from table based on the results... If all results is PASS then the table2 should be updated as pass... if any result is FAIL then the entire case_no should be updates a s fail..
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Jun 19, 2009
This code was working consistently, but now...This code works on the first pass.Then second pass it just hangs on Code:Dim tcpClient As TcpClient = tcpListener.AcceptTcpClient() for about 2 minutesThen the code will fork for another pass, then fail.....
Code:Imports SystemImports System.TextImports System.Collections.GenericImports System.XmlImports System.Xml.LinqImports System.Net.Sockets
[CODE]....
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Aug 10, 2010
I have an MVC application where all the data is tied together by VisitDate table in my database. The home page is a strongly typed view of type VisitDate, all it does is pull up some simple data. Now, here's where I'm having a problem. I need a link that passes the current model in the view back to a separate controller action so I can render a different page with different data. Here are my two controller actions. I'm going from News.aspx to FrontPage.aspx and hopefully passing SchoolVisit. [Code]
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Oct 6, 2010
I am in the process of prototyping a small sockets application, which monitors IT infrastructure (due to in-house financial and deployment restrictions, I am unable to utilise an existing commercial or open-source solution). Basically, I have a server application and associated agent process for communicating heart-beat data to the server. The server application implements a TCP socket class (TCPDevice), which is called from a WinForm. I am aware of the restriction on updating the UI from processes running on separate threads, and that the preferred technique for acheiving this is via the use of Delegates in conjunction with the Invoke method. Having had very little need previously for using Delegates (apart from of course std windows events and the BackGroundWorker control), I am at a loss as to how to do this in the context of my application, and would appreciate some assistance, although it has occurred to me that I could use the backgroundworker for marshalling updates to the UI.
Eventually the application will need to update a grid of devices via feeds from the defined agents, however for the purpose of this exercise simply updating a status bar on the UI will suffice. The section of the code which I believe is relevant to propogating the code to the form is contained in the OnDataReceived method.Below is a code excerpt from the protoype app which should put the above into appropriate context:
Code from the form:
[code]...
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Apr 25, 2012
I have a popup aspx page that receives data from a parent page gridview Edit click. There is a great deal of parsing of data from parent page to pop up as the data is being translated in pop up, then sent back to parent page to be reassembled in the original text block before update.
When the popup passes the data back or is canceled, the parent page gridview is still in Edit mode.I would like to pass the Cancel or Update button click from the popup to the parent page gridview so it can complete the update or cancel event without asking the user to click the corresponding command button link from the gridview edit mode, to Update or Cancel.
UPDATE: There is also a jquery UIBlocker on the Parent page to prevent the user from returning to the page until the PopUp page processing has been completed. Below is the critical code:
PARENT Page:
function parentFunc(a) {
// Unblocks on return from popup page.
$.unblockUI({});
[code]...
Had a problem with preventing the popup from reloading. So there is an if condition in the load event. A dynamic number of controls are built on the popup as literals. So the Page Init event and Page Load event fire on non Postback to rebuild the controls.
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Jan 27, 2012
I 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.
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Apr 28, 2011
I have been trying to pass selected data from two dropdownlist (page1.aspx) to (page2.aspx) I am not having any luck as it seems the data is not being passed when selected. Please help, this doesn't seem that difficult, but I can not get it work. On (page2.aspx) the data from the dropdownlists will be passed to a stored procedure and all results will be in a gridview.
Here is my code:
Page1.aspx
<asp:DropDownList ID="ddlState" runat="server" AutoPostBack="True" DataSourceID="SqlDataSource1" DataTextField="ST_Code" DataValueField="ST_Code" />
[code].....
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Oct 3, 2011
Is this way a "right" way to pass data between two forms?[code]...
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Apr 13, 2011
I have some code that works in winforms, but not in WPF apparently, the code is as follows: This is set globally:
Private Property avar As Object
Public main As MainWindow
Public charchoice As Char
And then in the Window Loaded sub, this is placed:
charchoice = main.charchoice
Thing is, the next window doesn't pick up this variable, so how can I make it recognise and use it?
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Apr 7, 2011
I'm still trying to develop p2p chat application from this thread. I have 2 applications, server and client. A client has: Form1.vb, BB_Client.vb, and RTS_SocketClient.vb. Dataflow is Form1 creates new object of BB_Client, BB_Client calls RTS_SocketClient.[code]...
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Dec 17, 2010
I have this [code]...
1. Create a global SQL instance and call .Write from within .ReadData
2. Create a new SQL instance within .ReadData and call .Write
3. Pass the data back to the code above and call .Write from the main code i.e. [code]...
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Nov 19, 2009
I have a form for end user (EU) to search for a certain code to check if it is an active code or not, i have the search bit working but i want to be able to have a message box saying "the code (code) is an active (product) code!"
So far i have:
Sub UpdateGrid(ByVal sqlStr As String)
Dim var As String
[code].....
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Feb 3, 2009
I'm sure this is possible but I've got no clue of what I'm looking for to even start to learn this. Basically I want to create a form that can load data from one software application and feed it to another.
Is it possible to change settings in other forms by another piece of software like if there was a flag = True and I wanted to change it to flag = False or instead of loading Dim processorID As String = String.Empty I can input Dim processorID As String = 1234
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Mar 10, 2010
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.
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Sep 13, 2010
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]....
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Dec 10, 2009
I�d like to pass data from my VB 2008 project to data fields set in Word. Can it be done and if so
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Apr 16, 2009
I am looking for some input. I am helping with a web application that is fairly large. We have some logic factored out into classes, not a true business logic layer (yet ). The classes are setup to pull values directly from the QueryString or Session variables and I'm not sure that that mehtod is proper or even a
The reason I would like some input is, there may be a chance to rewrite or at least refactor the code.
[Code]...
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May 17, 2010
I've created a MAPI Wrapper in VB6 and compiled it as an ActiveX.exe so I can use it in my VB.NET project. The project is a windows service that takes data from a webservice passes data to activex.exe and it creates public folder records in exchange 2003. I was wondering if anyone know how I could pass a collection to my activex.exe?
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Jul 25, 2011
I've never used a List(Of) before and I'm not sure how to pass it to the Data Layer of my application. The ColResCategory is a property within the Business Layer (See below) and it needs to be passed to the Data Layer. ReplaceResCategory (See 2nd Code view) is another class file within my Business Layer and the ColResCategory references it.
Public Property ColResCategory() As List(Of ReplaceResCategory)
Get
If IsNothing(mColResCategory) Then
mColResCategory = New List(Of ReplaceResCategory)
End If
Return mColResCategory
[Code] .....
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Dec 5, 2011
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?
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