刪除圖片框周圍的白色框？

Question

我正試圖將一個groupBox2容器中的pictureBox2移動到另一個groupBox1。 問題是，在該容器中，有另一個pictureBox1，當我將pictureBox2移動到pictureBox1上時，pictureBox2會在其周圍獲得一個白色框。

總而言之，我想將pictureBox2融合到pictureBox1。

這裏是我的代碼結合了鼠標移動，向上和向下的功能：

private void pictureBox2_MouseDown(object sender, MouseEventArgs e) 
    { 
     downPoint = e.Location; 
     pictureBox2.Parent = this; 
     pictureBox2.BringToFront(); 

    } 

    private void pictureBox2_MouseMove(object sender, MouseEventArgs e) 
    { 
     if (e.Button == MouseButtons.Left) 
     { 

      pictureBox2.Left += e.X - downPoint.X; 
      pictureBox2.Top += e.Y - downPoint.Y; 
     } 
    } 

    private void pictureBox2_MouseUp(object sender, MouseEventArgs e) 
    { 
     Control c = GetChildAtPoint(new Point(pictureBox2.Left - 1, pictureBox2.Top)); 

     if (c == null) c = this; 
     Point newLoc = c.PointToClient(pictureBox2.Parent.PointToScreen(pictureBox2.Location)); 
     pictureBox2.Parent = c; 
     pictureBox2.BackColor = Color.Transparent; 
     pictureBox2.Location = newLoc; 

     this.Refresh(); 
     pictureBox2.BringToFront(); 
    } 

我可以在任何地方移動pictureBox2併爲其分配一個父，但我不能把它分配pictureBox1作爲其父母，因爲它只檢測到groupBox2作爲其父母。

任何幫助將不勝感激。 謝謝。 Vincent

Answer 1

嘗試將PictureBox1.BorderStyle屬性設置爲None。