在C＃中的方法之間共享字符串

Question

有沒有人知道在C＃中的方法之間共享字符串的方法？

這是一段代碼，我需要讓我的字符串：

private void timer1_Tick(object sender, EventArgs e) 
    { 
     // The screenshot will be stored in this bitmap. 
     Bitmap capture = new Bitmap(screenBounds.Width, screenBounds.Height); 

     // The code below takes the screenshot and 
     // saves it in "capture" bitmap. 
     g = Graphics.FromImage(capture); 
     g.CopyFromScreen(Point.Empty, Point.Empty, screenBounds); 

     // This code assigns the screenshot 
     // to the Picturebox so that we can view it 
     pictureBox1.Image = capture; 

    } 

在這裏需要得到「捕獲」字符串：

 Bitmap capture = new Bitmap(screenBounds.Width, screenBounds.Height); 

，並把「捕獲」從這個方法：

private void pictureBox1_MouseMove(object sender, MouseEventArgs e) 
    { 
     if (paint) 
     { 
      using (Graphics g = Graphics.FromImage(!!!Put Capture in Here!!!)) 
      { 
       color = new SolidBrush(Color.Black); 
       g.FillEllipse(color, e.X, e.Y, 5, 5); 
      } 
     } 

    } 

在這裏：

 using (Graphics g = Graphics.FromImage(!!!Put Capture in Here!!!)) 

我希望有人能幫忙！ PS：如果你不明白整個事情，我是14歲，來自荷蘭，所以我不是最好的英文作家:-)。

Answer 1

您正在查看範圍的變量。

您的變量capture在方法級別定義，因此僅適用於該方法。

您可以在類級別（方法外部）定義變量，並且類中的所有方法都可以訪問它。

Bitmap capture; 
private void timer1_Tick(object sender, EventArgs e) 
{ 
    // The screenshot will be stored in this bitmap. 
    capture = new Bitmap(screenBounds.Width, screenBounds.Height); 

    // The code below takes the screenshot and 
    // saves it in "capture" bitmap. 
    g = Graphics.FromImage(capture); 
    g.CopyFromScreen(Point.Empty, Point.Empty, screenBounds); 

    // This code assigns the screenshot 
    // to the Picturebox so that we can view it 
    pictureBox1.Image = capture; 

} 

private void pictureBox1_MouseMove(object sender, MouseEventArgs e) 
{ 
    if (paint) 
    { 
     using (Graphics g = Graphics.FromImage(capture)) 
     { 
      color = new SolidBrush(Color.Black); 
      g.FillEllipse(color, e.X, e.Y, 5, 5); 
     } 
    } 

}