C# ref Confusion
- by Rahat
I have a confusion that when i pass a variable by refrence in the constructor of another class and after passing that object by refrence i recreate the refrence object with the new keyword.
Now the class in which i have passed the refrenced object dosen't reflect the updated data.
An exabple of the above problem is shown below:
Object to be passed by Refrence:
public class DummyObject
{
public string Name = "My Name";
public DummyObject()
{ }
}
Class which is passing the Refrence:
public partial class Form1 : Form
{
// Object to be passed as refrence
DummyObject dummyObject = new DummyObject();
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
// assigning value
dummyObject.Name = "I am Dummy";
// Passing object
Form2 frm = new Form2(ref dummyObject);
frm.Show();
}
private void button2_Click(object sender, EventArgs e)
{
// Displaying Name
MessageBox.Show(this.dummyObject.Name);
}
private void button3_Click(object sender, EventArgs e)
{
// Assigning new object
this.dummyObject = new DummyObject();
// Changing Name Variable
this.dummyObject.Name = "I am Rechanged";
// Displaying Name
MessageBox.Show(this.dummyObject.Name);
}
}
Class to which Object is passed by Reference:
public partial class Form2 : Form
{
private DummyObject dummyObject = null;
public Form2(ref DummyObject DummyObject)
{
InitializeComponent();
this.dummyObject = DummyObject;
this.dummyObject.Name = "I am Changed";
}
private void button2_Click(object sender, EventArgs e)
{
MessageBox.Show(this.dummyObject.Name);
}
}
whn i reaasign the object in Form 1 and cdisplay its value in form 2 it still displays "I am Changed" instead of "I am Rechanged".
How to keep the data synchronized?
