OpenFileDialog openFileDlg = new OpenFileDialog();
openFileDlg.Title = "选择文件";
openFileDlg.Multiselect = false;
openFileDlg.InitialDirectory=Environment.GetFolderPath(Environment.SpecialFolder.Desktop);//设置默认路径为桌面
openFileDlg.Filter = "(*.jpg,*.png,*.jpeg,*.bmp,*.gif)|*.jgp;*.png;*.jpeg;*.bmp;*.gif|All files(*.*)|*.*"; //设置多文件格式
if (openFileDlg.ShowDialog() == DialogResult.OK)
{
String filePath = openFileDlg.FileName;
this.pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
this.pictureBox1.ImageLocation = filePath;//选择照片后在PictureBox中显示
}