출처 :&nbsp;<a href="http://stackoverflow.com/questions/9770771/c-sharp-thread-and-a-waiting-form#9773081" target="_blank" class="tx-link">http://stackoverflow.com/questions/9770771/c-sharp-thread-and-a-waiting-form#9773081</a> using System;using System.Threading;using System.Windows.Forms;&nbsp;public partial class LoadingForm : Form{&nbsp;&nbsp;&nbsp; //http://stackoverflow.com/questions/9770771/c-sharp-thread-and-a-waiting-form#9773081&nbsp;&nbsp;&nbsp; public Action Function { get; set; }&nbsp;&nbsp;&nbsp;&nbsp; public LoadingForm()&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; InitializeComponent();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this.Shown += new EventHandler(Form_Loaded);&nbsp;&nbsp;&nbsp;&nbsp; }&nbsp;&nbsp;&nbsp; private void Form_Loaded(object sender, EventArgs e)&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; var thread = new Thread(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; () =&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Function?.Invoke();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this.Invoke(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (Action)(() =&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this.Close();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }));&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; });&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; thread.Start();&nbsp;&nbsp;&nbsp; }}



























































&nbsp; 해당 폼의 화면에는 loding gif 파일을 하나 넣어둔다. 사용 방법은 아래와 같다. LoadingForm f = new LoadingForm();f.Function
= (() =&gt; { Console.WriteLine("테스트 출력!"); });



f.CenterParent(this).ShowDialog();

Winform에서 작업하는 동안 로딩화면 띄우기