1.界面上拖個.pictureBox(pictureBox1)

//上傳點擊按鈕

private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog fileDialog = new OpenFileDialog();
DialogResult result = fileDialog.ShowDialog();
if (result == DialogResult.OK)
{
this.pictureBox1.Image = Image.FromFile(fileDialog.FileName);
}
}

//清楚圖片按鈕

private void button2_Click(object sender, EventArgs e)
{
this.pictureBox1.Image = null;
}

C#--程序背景圖片設置

public Form1()
{
InitializeComponent();
this.pictureBox1.BackgroundImage = Image.FromFile(@"C:\Users\admin\Desktop\logo.png");
this.BackgroundImageLayout = ImageLayout.Stretch;//自動伸展
}

轉載于:https://www.cnblogs.com/macT/p/9288936.html

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