WinForm中实现picturebox自适应图片大小的方法

848 阅读 0 评论 560 点赞

我是靠谱客的博主自信跳跳糖，这篇文章主要介绍WinForm中实现picturebox自适应图片大小的方法，现在分享给大家，希望可以做个参考。

本文实例讲述了WinForm中实现picturebox自适应图片大小的方法。分享给大家供大家参考，具体如下：

picturebox控件共有两种载入图片方式，分别为：

pictureBox1.BackgroundImage = Image，pictureBox1.load(url)

为使加载的图片自使用控件尺寸，可以分别对pictureBox控件设置BackGroundImageLayout=Stretch，SizeMode=StretchImagewinform中picturebox自适应图片大小

做了一个示例，代码如下，后面附完整项目源码下载：

复制代码

using System;
using System.Windows.Forms;
namespace HoverTreePictureBox
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
      WindowState = FormWindowState.Maximized;
    }
    private void button_getPicture_Click(object sender, EventArgs e)
    {
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.StretchImage;
      pictureBox_HoverTree.BackgroundImageLayout = ImageLayout.Stretch;
      try
      {
        pictureBox_HoverTree.Load("http://hovertree.com/hvtimg/bjafjc/rgevo2ea.jpg");
      }
      catch (Exception ex){ MessageBox.Show("何问起",ex.Message); }
    }
    private void button_hovertreeZoom_Click(object sender, EventArgs e)
    {
      //图像大小按其原有的大小比例被增加或减少 by 何问起
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.Zoom;
    }
    private void button_HovertreeStretch_Click(object sender, EventArgs e)
    {
      //PictureBox 中的图像被拉伸或收缩，以适应PictureBox的大小。 by 何问起
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.StretchImage;
    }
    private void s_Click(object sender, EventArgs e)
    {
      //调整PictureBox的大小，使其等于所包含图像的大小 by 何问起
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.AutoSize;
    }
  }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
using System;
using System.Windows.Forms;
namespace HoverTreePictureBox
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
      WindowState = FormWindowState.Maximized;
    }
    private void button_getPicture_Click(object sender, EventArgs e)
    {
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.StretchImage;
      pictureBox_HoverTree.BackgroundImageLayout = ImageLayout.Stretch;
      try
      {
        pictureBox_HoverTree.Load("http://hovertree.com/hvtimg/bjafjc/rgevo2ea.jpg");
      }
      catch (Exception ex){ MessageBox.Show("何问起",ex.Message); }
    }
    private void button_hovertreeZoom_Click(object sender, EventArgs e)
    {
      //图像大小按其原有的大小比例被增加或减少 by 何问起
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.Zoom;
    }
    private void button_HovertreeStretch_Click(object sender, EventArgs e)
    {
      //PictureBox 中的图像被拉伸或收缩，以适应PictureBox的大小。 by 何问起
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.StretchImage;
    }
    private void s_Click(object sender, EventArgs e)
    {
      //调整PictureBox的大小，使其等于所包含图像的大小 by 何问起
      pictureBox_HoverTree.SizeMode = PictureBoxSizeMode.AutoSize;
    }
  }
}