基于C#實(shí)現(xiàn)PDF文件合并工具
更新時間：2025年01月20日 10:00:54 作者：StevenChen85
這篇文章主要為大家詳細(xì)介紹了如何基于C#實(shí)現(xiàn)一個簡單的PDF文件合并工具,文中的示例代碼簡潔易懂,有需要的小伙伴可以跟隨小編一起學(xué)習(xí)一下
界面
主要用于發(fā)票PDF文件的合并。經(jīng)常出差要報銷的很有用。
代碼
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;
//using PdfSharp.Pdf;
//using PdfSharp.Pdf.IO;
namespace PdfMergeApp
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
btnOpenDir.Enabled = false;
}
private List<string> pdfList;
private string outputPdfDir;
private void bntSelectDir_Click(object sender, EventArgs e)
{
FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog();
DialogResult dialogResult = folderBrowserDialog.ShowDialog();
if (dialogResult == DialogResult.OK)
{
string selectedFolderPath = folderBrowserDialog.SelectedPath;
//Console.WriteLine("選擇的目錄是: " + selectedFolderPath);
txtFileDir.Text = selectedFolderPath;
pdfList = Directory.GetFiles(selectedFolderPath, "*.pdf").ToList();
if (pdfList != null && pdfList.Count > 0)
{
pdfList = pdfList.OrderBy(t => t).ToList();
}
addPdfList();
}
}
private void addPdfList()
{
this.listViewWorkLogs.Items.Clear();
int no = 1;
foreach (var item in pdfList)
{
ListViewItem lvItem = new ListViewItem();
lvItem.ForeColor = Color.Blue;
lvItem.Text = no.ToString();
lvItem.StateImageIndex = 0;
lvItem.Tag = no - 1;
lvItem.SubItems.Add(item);
this.listViewWorkLogs.Items.Add(lvItem);
no++;
}
}
/// <summary>
/// 合并多個PDF文件為一個PDF文件
/// </summary>
/// <param name="inputFolderPath"></param>
/// <param name="outputFolderPath"></param>
/// <param name="outputPdfName"></param>
public void MergePDFs(string outputFilePath, params string[] inputFilePaths)
{
// 獲取輸入文件夾中所有的PDF文件
//string[] inputFiles = Directory.GetFiles(inputFolderPath, "*.pdf");
// 創(chuàng)建輸出PDF文件路徑
//string outputPdfPath = Path.Combine(outputFolderPath, outputPdfName);
// 檢查新輸出文件是否已存在
if (File.Exists(outputFilePath))
{
// 如果已存在，則刪除舊文件并創(chuàng)建新文件
File.Delete(outputFilePath);
}
// 創(chuàng)建輸出PDF文件
using (FileStream stream = new FileStream(outputFilePath, FileMode.Create))
{
Document pdfDoc = new Document();
PdfCopy pdf = new PdfCopy(pdfDoc, stream);
pdfDoc.Open();
foreach (string file in inputFilePaths)
{
// 讀取每個PDF文件并將其頁面添加到輸出PDF中
PdfReader reader = new PdfReader(file);
int n = reader.NumberOfPages;
for (int i = 1; i <= n; i++)
{
pdf.AddPage(pdf.GetImportedPage(reader, i));
}
reader.Close();
}
if (pdfDoc != null) pdfDoc.Close();
stream.Close();
}
}
/// <summary>
/// 合并多個PDF文件為一個PDF文件
/// </summary>
/// <param name="inputFolderPath"></param>
/// <param name="outputFolderPath"></param>
/// <param name="outputPdfName"></param>
public void MergePDFs(string inputFolderPath, string outputFolderPath, string outputPdfName)
{
// 獲取輸入文件夾中所有的PDF文件
string[] inputFiles = Directory.GetFiles(inputFolderPath, "*.pdf");
// 創(chuàng)建輸出PDF文件路徑
string outputPdfPath = Path.Combine(outputFolderPath, outputPdfName);
outputPdfPath.CreateDirectoryByPath();
// 創(chuàng)建輸出PDF文件
using (FileStream stream = new FileStream(outputPdfPath, FileMode.Create))
{
Document pdfDoc = new Document();
PdfCopy pdf = new PdfCopy(pdfDoc, stream);
pdfDoc.Open();
foreach (string file in inputFiles)
{
// 讀取每個PDF文件并將其頁面添加到輸出PDF中
PdfReader reader = new PdfReader(file);
int n = reader.NumberOfPages;
for (int i = 1; i <= n; i++)
{
pdf.AddPage(pdf.GetImportedPage(reader, i));
}
reader.Close();
}
if (pdfDoc != null) pdfDoc.Close();
stream.Close();
}
string newOutputPdfPath = Path.Combine(outputFolderPath, "AllPDF_Merged.pdf");
//string newOutputPdfPath = Path.Combine(outputFolderPath, outputPdfName);
// 檢查新輸出文件是否已存在
if (File.Exists(newOutputPdfPath))
{
// 如果已存在，則刪除舊文件并創(chuàng)建新文件
File.Delete(newOutputPdfPath);
}
// 重命名輸出PDF文件
File.Move(outputPdfPath, newOutputPdfPath);
}
/// <summary>
/// 合并多個PDF文件為一個PDF文件
/// </summary>
/// <param name="inputFolderPath"></param>
/// <param name="outputFolderPath"></param>
/// <param name="outputPdfName"></param>
public bool MergePDFs(string outputFolderPath, string outputPdfName)
{
var isOk = false;
try
{
// 獲取輸入文件夾中所有的PDF文件
//string[] inputFiles = Directory.GetFiles(inputFolderPath, "*.pdf");
// 創(chuàng)建輸出PDF文件路徑
string outputPdfPath = Path.Combine(outputFolderPath, outputPdfName);
outputPdfPath.CreateDirectoryByPath();
// 創(chuàng)建輸出PDF文件
using (FileStream stream = new FileStream(outputPdfPath, FileMode.Create))
{
Document pdfDoc = new Document();
PdfCopy pdf = new PdfCopy(pdfDoc, stream);
pdfDoc.Open();
foreach (string file in pdfList)
{
// 讀取每個PDF文件并將其頁面添加到輸出PDF中
PdfReader reader = new PdfReader(file);
int n = reader.NumberOfPages;
for (int i = 1; i <= n; i++)
{
pdf.AddPage(pdf.GetImportedPage(reader, i));
}
reader.Close();
}
if (pdfDoc != null) pdfDoc.Close();
stream.Close();
}
string newOutputPdfPath = Path.Combine(outputFolderPath, "AllPDF_Merged.pdf");
//string newOutputPdfPath = Path.Combine(outputFolderPath, outputPdfName);
// 檢查新輸出文件是否已存在
if (File.Exists(newOutputPdfPath))
{
// 如果已存在，則刪除舊文件并創(chuàng)建新文件
File.Delete(newOutputPdfPath);
}
// 重命名輸出PDF文件
File.Move(outputPdfPath, newOutputPdfPath);
isOk = true;
}
catch (Exception ex)
{
MessageBox.Show("合并異常:" + ex.Message);
}
return isOk;
}
private void btnMergePDF_Click(object sender, EventArgs e)
{
if (pdfList != null && pdfList.Count > 0)
{
var outputFilePath = txtFileDir.Text + "\\MergePDF_" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".pdf";
//MergePDFs(outputFilePath, pdfList.ToArray());
var outputPdfName = "MergePDF_" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".pdf";
var outputPdfNameAll = txtFileDir.Text + "\\MergePDF\\" + outputPdfName;
outputPdfDir = txtFileDir.Text + "\\MergePDF";
//MergePDFs(txtFileDir.Text, txtFileDir.Text+ "\\MergePDF", outputPdfName);
var isOk = MergePDFs(outputPdfDir, outputPdfName);
if (isOk)
{
lblResult.Text = "合并完成。輸出文件目錄:" + outputPdfNameAll;
btnOpenDir.Enabled = true;
MessageBox.Show("合并完成");
}
}
else
{
MessageBox.Show("你沒有要合并的PDF文件");
}
}
private void btnOpenDir_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(outputPdfDir))
{
OpenDirectory(outputPdfDir);
}
else
{
MessageBox.Show("合并文件沒有生成");
}
}
static void OpenDirectory(string path)
{
ProcessStartInfo startInfo = new ProcessStartInfo
{
Arguments = path,
FileName = "explorer.exe"
};
Process.Start(startInfo);
}
private void listViewWorkLogs_ItemCheck(object sender, ItemCheckEventArgs e)
{
var listViewItem = sender as ListViewItem;
var index = listViewItem.Tag;
var a = 0;
}
private int selectIndex;
private int newIndex;
//private string selectFileName;
private void listViewWorkLogs_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewWorkLogs.SelectedItems.Count > 0)
{
var listViewItem = listViewWorkLogs.SelectedItems[0];
selectIndex = (int)listViewItem.Tag;
newIndex = selectIndex;
}
}
private void btnMoveUp_Click(object sender, EventArgs e)
{
if (pdfList != null && pdfList.Count > 0)
{
newIndex--;
if (newIndex >= 0 && newIndex < pdfList.Count)
{
var selectFileName = pdfList[selectIndex];
pdfList[selectIndex] = pdfList[newIndex];
pdfList[newIndex] = selectFileName;
selectIndex = newIndex;
addPdfList();
}
else
{
newIndex = 0;
}
}
}
private void btnMoveDown_Click(object sender, EventArgs e)
{
if (pdfList != null && pdfList.Count > 0)
{
newIndex++;
if (newIndex < pdfList.Count)
{
var selectFileName = pdfList[selectIndex];
pdfList[selectIndex] = pdfList[newIndex];
pdfList[newIndex] = selectFileName;
selectIndex = newIndex;
addPdfList();
}
else
{
newIndex = pdfList.Count - 1;
}
}
}
}
}UI代碼
namespace PdfMergeApp
{
partial class Form1
{
/// <summary>
/// 必需的設(shè)計器變量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的資源。
/// </summary>
/// <param name="disposing">如果應(yīng)釋放托管資源，為 true；否則為 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗體設(shè)計器生成的代碼
/// <summary>
/// 設(shè)計器支持所需的方法 - 不要修改
/// 使用代碼編輯器修改此方法的內(nèi)容。
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.txtFileDir = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.bntSelectDir = new System.Windows.Forms.Button();
this.btnMergePDF = new System.Windows.Forms.Button();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.listViewWorkLogs = new System.Windows.Forms.ListView();
this.columnHeader1 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader2 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.lblResult = new System.Windows.Forms.Label();
this.btnOpenDir = new System.Windows.Forms.Button();
this.btnMoveUp = new System.Windows.Forms.Button();
this.btnMoveDown = new System.Windows.Forms.Button();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(12, 9);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(75, 15);
this.label1.TabIndex = 0;
this.label1.Text = "選擇目錄:";
//
// txtFileDir
//
this.txtFileDir.Location = new System.Drawing.Point(90, 6);
this.txtFileDir.Name = "txtFileDir";
this.txtFileDir.ReadOnly = true;
this.txtFileDir.Size = new System.Drawing.Size(491, 25);
this.txtFileDir.TabIndex = 1;
//
// button1
//
this.button1.Location = new System.Drawing.Point(120, 141);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(8, 8);
this.button1.TabIndex = 2;
this.button1.Text = "button1";
this.button1.UseVisualStyleBackColor = true;
//
// bntSelectDir
//
this.bntSelectDir.Location = new System.Drawing.Point(600, 6);
this.bntSelectDir.Name = "bntSelectDir";
this.bntSelectDir.Size = new System.Drawing.Size(118, 35);
this.bntSelectDir.TabIndex = 3;
this.bntSelectDir.Text = "選擇目錄";
this.bntSelectDir.UseVisualStyleBackColor = true;
this.bntSelectDir.Click += new System.EventHandler(this.bntSelectDir_Click);
//
// btnMergePDF
//
this.btnMergePDF.Location = new System.Drawing.Point(724, 7);
this.btnMergePDF.Name = "btnMergePDF";
this.btnMergePDF.Size = new System.Drawing.Size(94, 32);
this.btnMergePDF.TabIndex = 3;
this.btnMergePDF.Text = "合并PDF";
this.btnMergePDF.UseVisualStyleBackColor = true;
this.btnMergePDF.Click += new System.EventHandler(this.btnMergePDF_Click);
//
// groupBox1
//
this.groupBox1.Controls.Add(this.listViewWorkLogs);
this.groupBox1.Location = new System.Drawing.Point(15, 49);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(764, 589);
this.groupBox1.TabIndex = 4;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "文件列表";
//
// listViewWorkLogs
//
this.listViewWorkLogs.BackColor = System.Drawing.SystemColors.InactiveCaption;
this.listViewWorkLogs.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
this.columnHeader1,
this.columnHeader2});
this.listViewWorkLogs.Dock = System.Windows.Forms.DockStyle.Fill;
this.listViewWorkLogs.FullRowSelect = true;
this.listViewWorkLogs.GridLines = true;
this.listViewWorkLogs.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
this.listViewWorkLogs.HideSelection = false;
this.listViewWorkLogs.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.listViewWorkLogs.LabelWrap = false;
this.listViewWorkLogs.Location = new System.Drawing.Point(3, 21);
this.listViewWorkLogs.MultiSelect = false;
this.listViewWorkLogs.Name = "listViewWorkLogs";
this.listViewWorkLogs.Size = new System.Drawing.Size(758, 565);
this.listViewWorkLogs.TabIndex = 2;
this.listViewWorkLogs.UseCompatibleStateImageBehavior = false;
this.listViewWorkLogs.View = System.Windows.Forms.View.Details;
this.listViewWorkLogs.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.listViewWorkLogs_ItemCheck);
this.listViewWorkLogs.SelectedIndexChanged += new System.EventHandler(this.listViewWorkLogs_SelectedIndexChanged);
//
// columnHeader1
//
this.columnHeader1.Text = "序號";
this.columnHeader1.Width = 50;
//
// columnHeader2
//
this.columnHeader2.Text = "文件名";
this.columnHeader2.Width = 580;
//
// groupBox2
//
this.groupBox2.Controls.Add(this.lblResult);
this.groupBox2.Controls.Add(this.btnOpenDir);
this.groupBox2.Location = new System.Drawing.Point(15, 644);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(809, 68);
this.groupBox2.TabIndex = 5;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "合并結(jié)果";
//
// lblResult
//
this.lblResult.AutoSize = true;
this.lblResult.Location = new System.Drawing.Point(17, 34);
this.lblResult.Name = "lblResult";
this.lblResult.Size = new System.Drawing.Size(55, 15);
this.lblResult.TabIndex = 0;
this.lblResult.Text = "label2";
//
// btnOpenDir
//
this.btnOpenDir.Location = new System.Drawing.Point(709, 24);
this.btnOpenDir.Name = "btnOpenDir";
this.btnOpenDir.Size = new System.Drawing.Size(94, 32);
this.btnOpenDir.TabIndex = 3;
this.btnOpenDir.Text = "查看文件";
this.btnOpenDir.UseVisualStyleBackColor = true;
this.btnOpenDir.Click += new System.EventHandler(this.btnOpenDir_Click);
//
// btnMoveUp
//
this.btnMoveUp.Location = new System.Drawing.Point(785, 141);
this.btnMoveUp.Name = "btnMoveUp";
this.btnMoveUp.Size = new System.Drawing.Size(33, 42);
this.btnMoveUp.TabIndex = 6;
this.btnMoveUp.Text = "上移";
this.btnMoveUp.UseVisualStyleBackColor = true;
this.btnMoveUp.Click += new System.EventHandler(this.btnMoveUp_Click);
//
// btnMoveDown
//
this.btnMoveDown.Location = new System.Drawing.Point(785, 224);
this.btnMoveDown.Name = "btnMoveDown";
this.btnMoveDown.Size = new System.Drawing.Size(33, 42);
this.btnMoveDown.TabIndex = 6;
this.btnMoveDown.Text = "下移";
this.btnMoveDown.UseVisualStyleBackColor = true;
this.btnMoveDown.Click += new System.EventHandler(this.btnMoveDown_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(836, 724);
this.Controls.Add(this.btnMoveDown);
this.Controls.Add(this.btnMoveUp);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.btnMergePDF);
this.Controls.Add(this.bntSelectDir);
this.Controls.Add(this.button1);
this.Controls.Add(this.txtFileDir);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "PDF文件合并";
this.groupBox1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.groupBox2.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtFileDir;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button bntSelectDir;
private System.Windows.Forms.Button btnMergePDF;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.ListView listViewWorkLogs;
private System.Windows.Forms.ColumnHeader columnHeader1;
private System.Windows.Forms.ColumnHeader columnHeader2;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Label lblResult;
private System.Windows.Forms.Button btnOpenDir;
private System.Windows.Forms.Button btnMoveUp;
private System.Windows.Forms.Button btnMoveDown;
}
}到此這篇關(guān)于基于C#實(shí)現(xiàn)PDF文件合并工具的文章就介紹到這了,更多相關(guān)C# PDF文件合并內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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