FreeSpire.PDF for .NETis aCommunity Editionof theSpire.PDF for .NET, which is a totally free PDF component for commercial and personal use. As a standalone C#/VB.NET component, Free Spire.PDF for .NET enables developers to create, write, edit, convert, print, handle and read PDF files on any .NET applications.

本篇文章將介紹用e-iceblue插件開發簡單的pdf查看器。

e-iceblue提供包括處理office在內的所有插件，地址：http://www.e-iceblue.com/

http://www.e-iceblue.com/Introduce/free-pdf-component.html下載免費版的pdf插件安裝完成后，就可以看到下面的demo窗體。該窗體展示了所有操作pdf的樣例和代碼，你也可以直接運行demo

該pdf插件將處理附件、標注、導出、打開、分頁、打印、存儲等相關pdf操作。

新建vs2012 winform程序，將C:Program Files (x86)e-iceblueSpire.PdfViewer-FEBin下的相應版本dll導入vs2012工具欄，

將PfdViewer控件拖至新建窗體上，Spire.PdfViewer的引用就算完成了。

this.pdfDocumentViewer1.LoadFromFile函數是加載一個pdf文件，參數是文件路徑。

this.pdfDocumentViewer1.Print函數是打印當前文檔。

下面是獲取注解和轉到注解的代碼

/// <summary>
        /// 獲取pdf注解
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnAttachmentAnnotation_Click(object sender, EventArgs e)
        {
            this.tableLayoutPanel1.SetRowSpan(this.pdfDocumentViewer1, 1);
            this.m_isAttachmentAnnotation = true;
            this.listView1.Visible = true;
            this.listView1.Items.Clear();
            this.listView1.Columns.Clear();
            if (this.pdfDocumentViewer1.IsDocumentLoaded && this.pdfDocumentViewer1.PageCount > 0)
            {
                this.listView1.View = View.Details;
                this.listView1.Columns.Add("注解",200);
                this.listView1.Columns.Add("內容",180);
                this.listView1.Columns.Add("頁碼",80);
                this.listView1.Columns.Add("位置",160);
                //獲取pdf注解列表
                PdfDocumentAttachmentAnnotation[] annotations = this.pdfDocumentViewer1.GetAttachmentAnnotaions();
                if (annotations != null && annotations.Length > 0)
                {
                    //注解屬性
                    for (int i = 0; i < annotations.Length; i++)
                    {
                        PdfDocumentAttachmentAnnotation annotation = annotations[i];
                        ListViewItem item = new ListViewItem(annotation.FileName);
                        item.SubItems.Add(annotation.Text);
                        item.SubItems.Add(annotation.PageIndex.ToString());
                        item.SubItems.Add(annotation.Location.ToString());
                        item.Tag = annotation;
                        this.listView1.Items.Add(item);
                    }
                }

            }
        }
        /// <summary>
        /// 轉到注解
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void listView1_Click(object sender, EventArgs e)
        {
            if (this.m_isAttachmentAnnotation)
            {
                PdfDocumentAttachmentAnnotation annotation = (PdfDocumentAttachmentAnnotation)this.listView1.SelectedItems[0].Tag;
                this.pdfDocumentViewer1.GotoAttachmentAnnotation(annotation);
            }
        }

最后的效果：

缺點：經過無數個文檔加載測試發現某些pdf文檔加載問題,如下

某pdf軟件加載某文檔

Spire.PdfViewer加載的某文檔

源碼下載：http://download.csdn.net/detail/oyipiantian/8683459

總結

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