这节我们主要实现缩小、旋转、打印、分割、合并、放大等功能

1、 放大功能

单击放大按钮，实现PDF放大预览，效果如下：

设计代码：

 System.Windows.Forms.ToolStripButton FangDaBT_Tool;
 FangDaBT_Tool = new System.Windows.Forms.ToolStripButton();
 // 
            // FangDaBT_Tool
            // 
            FangDaBT_Tool.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
            FangDaBT_Tool.Image = ((System.Drawing.Image)(resources.GetObject("FangDaBT_Tool.Image")));
            FangDaBT_Tool.ImageTransparentColor = System.Drawing.Color.Magenta;
            FangDaBT_Tool.Name = "FangDaBT_Tool";
            FangDaBT_Tool.Size = new System.Drawing.Size(29, 25);
            FangDaBT_Tool.Text = "放大页面";
            FangDaBT_Tool.Click += new System.EventHandler(this.FangDaBT_Tool_Click);

实现功能代码：

 private void FangDaBT_Tool_Click(object sender, EventArgs e)
        {
            ViewerPdf.Renderer.ZoomIn();
        }

2、 缩小功能

单击缩小按钮，实现PDF缩小预览，效果如下：

设计代码：

private System.Windows.Forms.ToolStripButton SuoXiaoBT_Tool;
this.SuoXiaoBT_Tool = new System.Windows.Forms.ToolStripButton();
        // 
            // SuoXiaoBT_Tool
            // 
            this.SuoXiaoBT_Tool.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
            this.SuoXiaoBT_Tool.Image = ((System.Drawing.Image)(resources.GetObject("SuoXiaoBT_Tool.Image")));
            this.SuoXiaoBT_Tool.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.SuoXiaoBT_Tool.Name = "SuoXiaoBT_Tool";
            this.SuoXiaoBT_Tool.Size = new System.Drawing.Size(29, 24);
            this.SuoXiaoBT_Tool.Text = "缩小页面";
            this.SuoXiaoBT_Tool.Click += new System.EventHandler(this.SuoXiaoBT_Tool_Click);

实现功能代码：

  private void SuoXiaoBT_Tool_Click(object sender, EventArgs e)
        {
            ViewerPdf.Renderer.ZoomOut();
        }

3、 宽度100%显示

单击宽度100%显示按钮，实现PDF宽度100%显示，效果如下：

设计代码：

private System.Windows.Forms.ToolStripButton HengBT_Tool;
this.HengBT_Tool = new System.Windows.Forms.ToolStripButton();
// 
// HengBT_Tool
 // 
this.HengBT_Tool.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
this.HengBT_Tool.Image = ((System.Drawing.Image)(resources.GetObject("HengBT_Tool.Image")));
this.HengBT_Tool.ImageTransparentColor = System.Drawing.Color.Magenta;
this.HengBT_Tool.Name = "HengBT_Tool";
this.HengBT_Tool.Size = new System.Drawing.Size(29, 24);
this.HengBT_Tool.Text = "横向100%";
this.HengBT_Tool.Click += new System.EventHandler(this.HengBT_Tool_Click);

实现功能代码：

 private void HengBT_Tool_Click(object sender, EventArgs e)
        {
            FitPage(PdfViewerZoomMode.FitWidth);
        }
 /// <summary>
        /// 适时显示页面
        /// </summary>
        /// <param name="zoomMode"></param>
        private void FitPage(PdfViewerZoomMode zoomMode)
        {            
            int page = ViewerPdf.Renderer.Page;
            ViewerPdf.ZoomMode = zoomMode;
            ViewerPdf.Renderer.Zoom = 1;
            ViewerPdf.Renderer.Page = page;
        }

4、 高度100%显示

单击高度100%显示按钮，实现PDF高度100%显示：

设计代码：

private System.Windows.Forms.ToolStripButton ShuxiangBT_Tool;
this.ShuxiangBT_Tool= new System.Windows.Forms.ToolStripButton();
// 
            // ShuxiangBT_Tool
            // 
            this.ShuxiangBT_Tool.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
            this.ShuxiangBT_Tool.Image = ((System.Drawing.Image)(resources.GetObject("ShuxiangBT_Tool.Image")));
            this.ShuxiangBT_Tool.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.ShuxiangBT_Tool.Name = "ShuxiangBT_Tool";
            this.ShuxiangBT_Tool.Size = new System.Drawing.Size(29, 24);
            this.ShuxiangBT_Tool.Text = "竖向100%";
            this.ShuxiangBT_Tool.Click += new System.EventHandler(this.ShuxiangBT_Tool_Click);

实现功能代码：

 private void ShuxiangBT_Tool_Click(object sender, EventArgs e)
 {
            FitPage(PdfViewerZoomMode.FitHeight);
 }

FitPage函数上面有显示。

5、 顺时针旋转

单击顺时针旋转按钮，实现PDF旋转功能：

设计代码：

private System.Windows.Forms.ToolStripButton ShunBT_Tool;
this.ShunBT_Tool= new System.Windows.Forms.ToolStripButton();
  // 
            // ShunBT_Tool
            // 
            this.ShunBT_Tool.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
            this.ShunBT_Tool.Image = ((System.Drawing.Image)(resources.GetObject("ShunBT_Tool.Image")));
            this.ShunBT_Tool.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.ShunBT_Tool.Name = "ShunBT_Tool";
            this.ShunBT_Tool.Size = new System.Drawing.Size(29, 24);
            this.ShunBT_Tool.Text = "顺时针旋转Pdf";
            this.ShunBT_Tool.Click += new System.EventHandler(this.ShunBT_Tool_Click);

实现功能代码：

  /// <summary>
        /// 顺时针旋转PDF
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ShunBT_Tool_Click(object sender, EventArgs e)
        {
            ViewerPdf.Renderer.RotateRight();
        }

6、 逆时针旋转

单击向逆时针旋转按钮，实现PDF旋转功能：

设计代码：

private System.Windows.Forms.ToolStripButton NiBT_Tool;
this.NiBT_Tool= new System.Windows.Forms.ToolStripButton();
 // NiBT_Tool
            // 
            this.NiBT_Tool.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
            this.NiBT_Tool.Image = ((System.Drawing.Image)(resources.GetObject("NiBT_Tool.Image")));
            this.NiBT_Tool.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.NiBT_Tool.Name = "NiBT_Tool";
            this.NiBT_Tool.Size = new System.Drawing.Size(29, 24);
            this.NiBT_Tool.Text = "逆时针旋转Pdf";
            this.NiBT_Tool.Click += new System.EventHandler(this.NiBT_Click);

实现功能代码：

/// <summary>
        /// 逆时针旋转PDF
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void NiBT_Click(object sender, EventArgs e)
        {            
            ViewerPdf.Renderer.RotateLeft();
        }

相关连接

1. 【c#系列】PDF进行操作-浏览、分割、合并、插入、删除（1）