CODEWITHSUNDEEP
c#oopevent-handling
Thomas Robert Horn
Thomas Robert Horn

Reputation: 133

Using an object in a click event c#

I am using Visual Studio 2010 for C#, I am messing around with some classes and objects before building the application I want to build.

The form I have built has a form1_load event that creates an instance of an object I want to manipulate throughout the form.

When I click a button I want to be able to call one of the methods of my object to execute some statements. I cannot get this to work however, it tells me that the object doesn't exist in the current context, how to I pass this object along to the click event so I can manipulate it?

public void Form1_Load(object sender, EventArgs e)
    {
        MyPerson bozo = new MyPerson("bozo",48,23);
        textBox2.Text = bozo.name;
    }

    public void button1_Click(object sender, EventArgs e)
    {

        bozo.myMethod(); // c# is saying that this object doesn't exist in the current context.
    }

I understand class structures and objects ok, but I often get stuck on accessing them in different places.

Upvotes: 1

Views: 1274

Answers (1)

Tim Schmelter
Tim Schmelter

Reputation: 460340

Your object is a local variable in Form_Load, so it exists there only. You could make it a field or property in the form. For example:

private MyPerson bozo { get; set; }

public void Form1_Load(object sender, EventArgs e)
{
    bozo = new MyPerson("bozo",48,23);
    textBox2.Text = bozo.name;
}

public void button1_Click(object sender, EventArgs e)
{
    bozo.myMethod(); // now you can access it since it "lives" in the whole form
}

Upvotes: 4

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