C# 彈出視窗顯示進度條實作（二）

主視窗欄位與委派

private frmProcessBar myProcessBar = null;
private delegate bool IncreaseHandle(int nValue);
private IncreaseHandle myIncrease = null;

開啟進度條視窗

private void ShowProcessBar() {
    myProcessBar = new frmProcessBar();
    myIncrease = new IncreaseHandle(myProcessBar.Increase);
    myProcessBar.ShowDialog(); // 模態顯示，阻塞直到關閉
    myProcessBar = null;
}

委派連結

將進度條視窗的 Increase 方法包裝為委派，供背景執行緒透過 Invoke 呼叫。