C#图片浏览器

2、实现过程
1）图片浏览器界面：界面简洁，功能明了。

（如图）
图片浏览界面展示1（指定文件打开方式）：
图片浏览界面展示2（目录树中打开选择图片文件夹）：
listView中可选择显示方式
private void ToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog openFile = new OpenFileDialog();
openFile.Filter = "*.jpg;*.bmp|*.jpg;*.bmp;";
if (openFile.ShowDialog() == DialogResult.OK)
{
Bitmap srcBitmap = new Bitmap(openFile.FileName);
myBitmap = new Bitmap(srcBitmap, this.pictureBox1.Width, this.pictureBox1.Height);
this.pictureBox1.Image = myBitmap;
//this.pictureBox1.Image = Image.FromFile(openFile.FileName); }
}
2.2双击listView选定项，展示选定图片
private void listView1_MouseDoubleClick(object sender, MouseEventArgs e)
{
ListViewItem item = listView1.SelectedItems[0];
index = item.ImageIndex;
pictureBox1.Load(arrPath[index]);
}
2.3图片变换
private void buttonLeftToRight_Click(object sender, EventArgs e)
{
if (pictureBox1.Image != null)
{
//左到右拉伸
g = this.pictureBox1.CreateGraphics();
g.Clear(this.BackColor);
for (int x = 0; x <= width; x++)
{
g.DrawImage(this.pictureBox1.Image, 0, 0, x, height);
}
g.Dispose();
}
}
private void buttonUptoDown_Click(object sender, EventArgs e)
{
if (pictureBox1.Image != null)
{
//上到下拉伸
g = this.pictureBox1.CreateGraphics();
//初始为灰色
g.Clear(Color.Gray);
for (int y = 0; y <= height; y++)
{
g.DrawImage(this.pictureBox1.Image, 0, 0, width, y);
}
g.Dispose();
}
}
private void buttonReversal_Click(object sender, EventArgs e)
{
if (pictureBox1.Image != null)
{
//反转
g = this.pictureBox1.CreateGraphics();
g.Clear(this.BackColor);
for (int x = -width / 2; x <= width / 2; x++)
{
Rectangle DestRect = new Rectangle(0, height / 2 - x, width, 2 * x);
Rectangle SrcRect = new Rectangle(0, 0, this.pictureBox1.Image.Width, this.pictureBox1.Image.Height);
g.DrawImage(this.pictureBox1.Image, DestRect, SrcRect,
GraphicsUnit.Pixel);
}
g.Dispose();
}
}
private void buttonMiddletoSide_Click(object sender, EventArgs e)
{
if (pictureBox1.Image != null)
{
//中间向两边拉伸
g = this.pictureBox1.CreateGraphics();
//初始为灰色
g.Clear(Color.Gray);
for (int y = 0; y <= width / 2; y++)
{
Rectangle DestRect = new Rectangle(width / 2 - y, 0, 2 * y, height);
Rectangle SrcRect = new Rectangle(0, 0, this.pictureBox1.Image.Width, this.pictureBox1.Image.Height);
g.DrawImage(this.pictureBox1.Image, DestRect, SrcRect,
GraphicsUnit.Pixel);
}
g.Dispose();
}
}
private void buttonExpand_Click(object sender, EventArgs e)
{
if (pictureBox1.Image != null)
{
//中间向四周扩散
g = this.pictureBox1.CreateGraphics();
g.Clear(this.BackColor);
for (int x = 0; x <= width / 2; x++)
{
Rectangle DestRect = new Rectangle(width / 2 - x, height / 2 - x, 2 * x, 2 * x);
Rectangle SrcRect = new Rectangle(0, 0, this.pictureBox1.Width,
this.pictureBox1.Height);
g.DrawImage(this.pictureBox1.Image, DestRect, SrcRect,
GraphicsUnit.Pixel);
}
g.Dispose();
}
}
private void button5_Click(object sender, EventArgs e)//右旋
{
if (pictureBox1.Image != null)
{
pictureBox1.Image.RotateFlip(RotateFlipType.Rotate90FlipNone);
pictureBox1.Refresh();
}
}
private void button7_Click(object sender, EventArgs e)//左旋
{
if (pictureBox1.Image != null)
{
pictureBox1.Image.RotateFlip(RotateFlipType.Rotate270FlipNone);
pictureBox1.Refresh();
}
}
2.4幻灯片播放
private void timer1_Tick(object sender, EventArgs e) //播放时展示下一张
{
if (index < arrPath.Length - 1)
{
pictureBox1.Load(arrPath[++index]);
}
else { index = 0; pictureBox1.Load(arrPath[index]); }
}
private void button3_Click(object sender, EventArgs e)//开始播放幻灯片
{
if (pictureBox1.Image != null)
{
timer1.Enabled = true;
}
}
private void button4_Click(object sender, EventArgs e)//停止播放幻灯片
{
if (pictureBox1.Image != null)
{
timer1.Enabled = false;
}
}
2.4浏览上一张和下一张（此功能不适用与指定文件打开方式）
private void button1_Click(object sender, EventArgs e)//查看上一张
{
if (pictureBox1.Image != null)
{
if (index > 0)
{
pictureBox1.Load(arrPath[--index]);
}
else { index = arrPath.Length; pictureBox1.Load(arrPath[--index]); } }
}
private void button2_Click(object sender, EventArgs e)//查看下一张
{
if (pictureBox1.Image != null)
{
if (index < arrPath.Length - 1)
{
pictureBox1.Load(arrPath[++index]);
}
else { index = 0; pictureBox1.Load(arrPath[index]); }
}
}。