C# WinForms: How to set Main function STAThreadAttribute

Question

I get the following exception when calling saveFileDialog.ShowDialog() in a background thread:

Current thread must be set to single thr

Answer 1

Add following code on FormLoad

private void Form1_Load(object sender, EventArgs e)
{
    Thread myth;
    myth = new Thread(new System.Threading.ThreadStart(CallSaveDialog)); 
    myth.ApartmentState = ApartmentState.STA;
    myth.Start();
}

Here CallSaveDialog is a thread and here you can call ShowDialog like this

void CallSaveDialog(){saveFileDialog.ShowDialog();}