Getting String Value From Form Into Class( Not Another Form)?
Apr 13, 2010This is my code in my class
Public Class DrawableTextBox
Inherits Drawable
Dim i_testString As Integer
[code]....
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.net - Getting String Value From Form Into Class?
Apr 13, 2010I have a question regarding the some data which is being transfered from one form to my class. It's not going quite the way i'd like to , so I figured maybe there is someone who could help me.
This is my code in my class
Public Class DrawableTextBox
Inherits Drawable
Dim i_testString As Integer
Private s_InsertLabel As String
Private drawFont As Font
[Code]...
I've got a form with a textbox( form1) in which the text is being inserted and passed through a buttonclick (al via properties).As you can see I've placed several traces and in the property of the class my trace works fine , however if I look in my Draw function it is already gone.
Form Result To Another Form - Class Contains A Form That Have Buttons
Apr 9, 2010I designed a class contains a form that have buttons. When i click any button this function runs
Public Sub BtnClick(ByVal sender As Object, ByVal e As EventArgs)
result = CType(sender, Button).Text
[CODE]...
In another project I imported this class. I called the method that shows the form in my class. I need to store the 'result' variable in another variable in the new project. How can It be done.
Object Passed ByRef To Form, But Not Accessible Throughout Form Class
Feb 18, 2010Hi
I've got a pretty general question about the best practice in passing an object reference to a Form in VB.NET. My form is a dialog and I've created an overload ShowDialog method, where I pass an Object into it ByRef.
The trouble is, I want to be able to refer to that Object throughout my dialog Class and not just in the ShowDialog method. For instance, some of my Events for controls on the form, need to reference that object.
I know I could create a local Private variable in the Class and assign it to the passed value, and then use that value. However I'm thinking this isn't very efficient because it would (I believe) create a new copy of the Object (which is a complex, large class in itself).
Threading - Access A Value Of A Control Within A Form Outside Of The Form Class
Jun 3, 2009What is the best way to access a value of a control within a form outside of the form class. I have a lot of functions defined in a module, one of these functions requires a series of values from controls in my main form such as the FolderBrowserDialog.SelectedPath element. I understand that these cannot be accessed in the format form.FolderBrowserDialog1.SelectedPath and that they need to be accessed using a delegate. This is the part I am stuck with.
[Code]...
Form Inheritance - Error1Base Class 'MenuStrip' Specified For Class 'Lesson2' Cannot Be Different From The Base Class
Apr 15, 2010I have put this code in the global form Inherits System.Windows.Forms.Form. And then in the form that will inherit this from the global Inherits MenuStrip. "MenuStrip" is what the global form is called. But keep getting this error: Error1Base class 'MenuStrip' specified for class 'Lesson2' cannot be different from the base class 'System.Windows.Forms.Form' of one of its other partial types.
View 5 RepliesVS 2005 Moving Rich Text Box String From Form To Form?
Apr 15, 2009simple problem Basically in form1 i have a line of SQL code in a rich text box called rtb_select
what i would like..This code to run under a connection string called strSQLSelectQuery in form2
I have been told someting like strSQLselectQuery = rtb_select.text would work however because rtb_select is in a different form in the same project it does not recognise rtb_Select
Getting A String From A Child Form To A Parent Form
Feb 27, 2009I am fairly new to visualbasic. A little background from me, I've programmed before in C++, Java, and PHP so I know programming. But I am new when it comes to GUI development too. My question is that I have a main form and I've created another small form. In the main form I show the small form when they click a button, like this:
[Code]...
Create A New Class That Inherits From The Base Form Class And Define A New() Method With Parameters?
Oct 1, 2008I've been creating short test apps repeatedly to try to understand some of the concepts in VB.NET.For the most part it has been illuminating.I read Bucky's .NET knowlegebase tutorial on passing objects as parameters to newly created forms. He shows how to create a new class that inherits from the base form class and define a New() method with parameters Extending the concept I thought about doing the same thing with a form that was created at design-time (In this case Form2).
[Code]...
VS 2010 - Et The ATM Class To Instantiate On The Form Class?
Nov 22, 2011I'm trying to get the ATM Class to Instantiate on the Form class.
[code]...
ISSUE = " 'ThisATM' is used before it has been assigned a value. A Null reference exception could result at runtime"
The Other problem i am having is with a class in the program called CardReader. What am i supposed to type to let the code below be able to "read" the read function on the Form1?
[code]...
Get Form Click Or Form Control Mouse Events To Fire DURING Form LOADing
Aug 26, 2011Im Using VB 2008. I have MsgBox() statements in all Mouse & Form Click events to TEST & NOTHING FIRES during Form Load when I click on Form or Button Controls !!! The Form Load event contains code for Displaying the Label.Text control many times with changes in the Text to simmulate annimation.
[Code]...
Use Form In Class?
Sep 6, 2011How can i use a form in these application..
View 2 RepliesForm In A Form - Manipulate The App's Properties Place Inside Child Form?
Dec 23, 2008The following code does create a form within a form and does place NotePad inside the child form. You have to manually start NotePad prior to execution (I work on that later) but the code does workŠ My problem is now I want to manipulate the properties of notepad i.e. focus, size, location, etc. but I cannot figure out how to reference notepad and its properties.
[Code]...
Get A Button On Form A To Open Form B And Then Close (not Hide) Form A When Clicked?
Jun 12, 2009get a button on form A to open form B and then close (not hide) form A when clicked?Background: I am coding a VSTO application for Excel in VB2008.
Private Sub FormAButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles FormAButton.Click
Dim FormB As New FormB
[code]....
Inter-form Communication - Form Being Called Form Several Forms Using ShowDialog()
Mar 28, 2011I have a form being called form several forms using ShowDialog().
1. Is there a way for called form to know which form called it by receiving a code or key from the calling form?
2. The calling form has a gridview. How can the called form pick up a column's value from the currently highlighted row in gridview in the calling form?
Mdi Child Form Order - Move The New Form Behind The Main Form While It Loads
Aug 5, 2010i have my main child form open. then i show the new form:
[Code]...
but when the form opens it flickers a lot. so i want move the new form behind the main form while it loads so the user does not see the flicker. once it is done loading i will set the form to topmost. how do i move the new form behind the main form?
Get The Form Name When The Class Is Initialized?
Jul 28, 2010Public Class MyClass
Property Form as Form
Public Sub Mysub1
[code].....
How To Draw On Form From Within Class
Jun 18, 2012I am basically teaching my students about OO programming and want them to be able to see the outcomes to methods visually. I want to draw shapes on a form but cant for the life of me get it to work - no errors but no actual shapes are being drawn. So I have created a method called drawFace which is run when a new instance of the object is created. This method has the following code in it
Form1.CreateGraphics.DrawEllipse(Pens.Black, 100, 100, 100, 50)
It doesn't cause any errors, but it doesn't seem to do anything. Also tried adding a picture box to the stage and ammending the code as such
Form1.PictureBox1.CreateGraphics.DrawEllipse(Pens.Black, 100, 100, 100, 50)
But still no joy.
How To Make Class To Use In Form
Aug 20, 2009I made this class:
Imports System.IO.Ports
Public Class Controller
Dim Serial As New SerialPort
Dim CurrentAzimuth As String
Dim CurrentElevation As String
Public Function Open(ByVal COMPORT As String)
[Code] .....
And I want to use it in a form. How do I call this class "controller" and then what code do I need to use it in a windows form?
Using Enumeration Of Class From Form?
Aug 10, 2011I have a form event that calls a public function in a class. I am trying to use an enumeration that is in the class from my form, but I'm getting a green squiggly line under clRS.enmProcedure.SetReady.
The error says this:
"Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated."
Private Sub dgvResults_CellContentClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvResults.CellContentClick
If clRS.pubfnc_UpdateResults_M(dtResultID, Me.dgvResults, clRS.enmProcedure.SetReady) = "Failed" Then
Exit Sub
End If
End Sub
Search For A String In A Textbox On Form And If String Found?
Mar 20, 2010how can I search a textbox for a string within a string and if certain word (string) found enable a timer?
View 3 Replies.NET - Startup Class Before The Logon Form?
Feb 24, 2010I have a VB.NET project and I want to know how I can call a class called StartUp.vb BEFORE my logon form.
Here below is the coding of Startup.vb class
[Code]...
The problem is: I couldn't find a way to call this StartUp.vb file and therefore I am unable to call my LogonUI form, I also try to "right click" the vb project and select "properties" and go to "Startup form", couldn't see the class of "Startup.vb" showing up
Access Functions In The Class Within Another Form
Feb 18, 2011I am new to .NET 4 and VS 2010. I am using VB 2010 and have made a class and need to know how i can access those functions in the class within another form. So there is a function say of XYZ in the class named classes.vb and need to get to it from form1.vb
View 9 RepliesBuild A Class That Works With A Form?
Sep 7, 2010I am trying to build a class that works with a form, but I keep getting the dreaded "Object reference not set to an instance of an object" Error.The form basically collects test grades and assigns them to a collection.My class code is as follows:
Public Class Scores
Private colScoreCollection As New Collection
Public mintSum As Integer
Public mdecAverage As Decimal
Public mintMinimum As Integer
[Code]...
I had a similar project I was working on that had a collection in it, but now that one is giving me the same error. It there something with my version of Visual Studio that is causing this error possibly?
Control Form With Class Library
Oct 27, 2009I have trouble to control my form using with the class library. I am trying to set the form to maximum and set the form border to none. There is an error in come to the end of the statement next to the test.myform.[code]The error I have received is Object reference not set to an instance of an object.
View 6 RepliesCreating A Partial Class For A Form?
Nov 30, 2010I would like to create a partial class for my form. I have a lot of events, and it gets messy, so I would like to break up sections into their own files. The problem: When I create a partial class of my form, say:
Partial Public Class Form1
End Class
Visual Studio decides I need another form for this partial class.
1. How do I create a partial class for a form?
2. If I cant do that, how can I break up all the events in my form into different files?
Delete A Module , Class / Form?
May 9, 2009I wonder how do I delete a Module or Class or a Form.[code]...
View 10 RepliesForm Control And Class Libraries?
Jan 14, 2010I want to create a library (.dll) of custom dialog forms. Which type of project do i make? Class Library, Windows Forms Control Library, other? Whats the difference between the two?
View 3 RepliesGet Code From Class To Update Form?
Feb 14, 2011I know this is probably a common one, its also quite tricky to know how to get around it (I find anyway).I have a seperate thread, within that thread I have defined an object (of my own class).Obj.UpdateMyForm is called, but how do I get the code from my class to update the form?[code]I found this code online a while back, and it seems to work if I call the sub routine directly from another thread, however, calling it from one of my class sub routines doesn't seem to work.
View 6 RepliesHow To Call A Class From A Main Form
Mar 5, 2010How would you call a class from a main form? In VB6 you would call a module by just simply calling the module name.
View 2 Replies