PictureBox C＃中没有图像

Question

我有PictureBox的代码但是当我想要启动我的表格时，我的图片框没有图像。

public Form1()
{
    PictureBox pictureBox1 = new PictureBox();

    pictureBox1.Image = Image.FromFile(@"C:\\obrazki\bat2.jpg");
    pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
    pictureBox1.Visible = true;

    pictureBox1.Left = 100;
    pictureBox1.Top = 100;

    InitializeComponent();
}

Answer 1

您的PictureBox确实有图片，但不可见。您尚未将其添加到控件中。

public Form1()
{
    PictureBox pictureBox1 = new PictureBox();

    pictureBox1.Image = Image.FromFile(@"C:\\obrazki\bat2.jpg");
    pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
    pictureBox1.Visible = true;

    pictureBox1.Left = 100;
    pictureBox1.Top = 100;

    // missing line
    Controls.Add(pictureBox1);

    InitializeComponent();
}

将Visible设置为true是没有意义的。它是PictureBox的默认值。