public Form1()
{
InitializeComponent();
CheckForIllegalCrossThreadCalls = false;
}
or
public Form1()
{
InitializeComponent();
TextBox.CheckForIllegalCrossThreadCalls = false;
}
{
InitializeComponent();
CheckForIllegalCrossThreadCalls = false;
}
{
InitializeComponent();
TextBox.CheckForIllegalCrossThreadCalls = false;
}