Got ObjectDisposedExceptionerror after opening

Question

I get ObjectDisposedException  after opening of the program.

 

The program is a form app and uses sqlite. I think it happens because I try to access form elements. I read some articles about this issue but I could not resolve.

 

 

 Form(){

 

CheckForIllegalCrossThreadCalls = false;

// other codes 

 

}

 

 

private void button1_Click(object sender, EventArgs e)

{

panel1.Visible = false;

panel2.Visible = true;

List products = new DbOperations().getAllProducts();

BindingSource source = new BindingSource();

source.DataSource = products;

dataGridView1.DataSource = source;

}

 

at this point, I got that error.