Question

C# access checkbox from class

Asked by: tim_cs

I have a windows app with a mainForm.  The mainForm creates an instance of a class called process.  I would like to be able to access a checkbox on mainForm from process but I'm having some issues with this.  I will need to be able to check the value of the checkbox and change it's value from the process class.  What is the best way of doing this?

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Asked On
2009-09-11 at 07:42:44ID24724719
Tags

C#

,

.Net

,

Windows Forms

Topics

C# Programming Language

,

Microsoft Visual C#.Net

,

.NET

Participating Experts
2
Points
125
Comments
5

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Answers

 

by: daryalPosted on 2009-09-11 at 07:53:42ID: 25310129

 

by: rakeshjaiminiPosted on 2009-09-11 at 07:53:53ID: 25310131

check this below code is for textbox you can change it to checkbox as per your need

How to access textbox on parent form
http://social.msdn.microsoft.com/Forums/en-US/winforms/thread/384ce39d-7d5b-4920-95e1-e99876b6f852


First, set the modifier of your textBox to internal (or public if the child form you are showing is from a different assembly) of your parent form to expose it, so other forms can have access to it by using the parent form's instance.

Then, from your ShowDialog call, do it this way:


   Form fRoom = new RoomAllocator();
   fRoom.ShowDialog(this);


To access the exposed textbox from RoomAllocator, all you have to do is, cast the Owner property value to the type of your parent form:


   TextBox parentTextBox = ((ParentForm)this.Owner).textBox1;
   parentTextBox.Text = "Textbox is updated from the child form";

 

by: tim_csPosted on 2009-09-11 at 08:45:12ID: 25310691

Ok, it appears to be working I just want to make sure I'm doing this correctly.

In mainForm I code snippet 1.

In Process I have code snippet 2.

I can then access the checkbox with parentForm.  Is this a correct way of doing this now and is what I have set up a normal process?  

CODE SNIPPET 1
 public partial class mainForm : Form
    {
        private Process process;
 
        public mainForm()
        {
            InitializeComponent();
            process = new Process(this);
           // more code below
        }
 
CODE SNIPPET 2
class Process
    {
        private mainForm parentForm;
     
     public ProcessFiles(mainForm obj)
        {
            parentForm = obj;
            // more code below
        }

                                              
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by: rakeshjaiminiPosted on 2009-09-11 at 10:28:35ID: 25311652

yes you are in right direction :D

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