PDF转base64,图片转base64,base64转PDF,base64转图片C#源代码
PDF转base64,图片转base64,base64转PDF,base64转图片C#源代码
一.效果图：
二.源代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace base64Convert
{
public partial class Form1 : Form
{
/// <summary>
/// [功能描述: <br>PDF转base64,图片转base64,base64转PDF,base64转图片C#源代码</br>
/// [创 建 者: 51jrft.com]<br>C# framwork 3.5 </br>
/// [创建时间: 2023-12-15]<br> </br>
/// </summary>
#region 方法
public Form1()
{
InitializeComponent();
}
/// <summary>
/// pdf转base64
/// </summary>
private void pdfConvertbase64()
{
string strBase64 = string.Empty;
using (FileStream fs = new FileStream(this.textBox1.Text, FileMode.Open))
{
byte[] bt = new byte[fs.Length];
fs.Read(bt, 0, bt.Length);
fs.Close();
strBase64 = Convert.ToBase64String(bt);
}
Logs(strBase64, textBox2.Text, false);
// richTextBox1.Text = strBase64;
}
/// <summary>
/// base64转pdf
/// </summary>
private void base64Convertpdf()
{
string strBase = string.Empty;
using (StreamReader read = new StreamReader(this.textBox1.Text, Encoding.Default))
{
strBase = read.ReadToEnd();
read.Close();
}
byte[] bytes = Convert.FromBase64String(strBase);//richTextBox1.Text.Trim()
//保存数据到磁盘
string location = this.textBox2.Text;
System.IO.FileStream stream = new System.IO.FileStream(location, System.IO.FileMode.CreateNew);
System.IO.BinaryWriter writer = new System.IO.BinaryWriter(stream);
writer.Write(bytes, 0, bytes.Length);
writer.Close();
}
/// <summary>
/// base64转Pic
/// </summary>
private void base64ConvertPic()
{
string base64 = string.Empty;
using (StreamReader read = new StreamReader(this.textBox1.Text, Encoding.Default))
{
base64 = read.ReadToEnd();
read.Close();
}
// base64 = richTextBox1.Text.Trim();
base64 = base64.Replace("data:image/png;base64,", "").Replace("data:image/jgp;base64,", "").Replace("data:image/jpg;base64,", "").Replace("data:image/jpeg;base64,", "");//将base64头部信息替换
byte[] bytes = Convert.FromBase64String(base64);
MemoryStream memStream = new MemoryStream(bytes);
Image mImage = Image.FromStream(memStream);
Bitmap bp = new Bitmap(mImage);
MemoryStream ms = new MemoryStream();
bp.Save(this.textBox2.Text, System.Drawing.Imaging.ImageFormat.Jpeg);//注意保存路径
}
/// <summary>
/// Pic转base64
/// </summary>
private void PicConvertbase64()
{
FileInfo file = new FileInfo(this.textBox1.Text);
var stream = file.OpenRead();
byte[] buffer = new byte[file.Length];
//读取图片字节流
stream.Read(buffer, 0, Convert.ToInt32(file.Length));
//将base64字符串保存到base64.txt文件中
StreamWriter sw = new StreamWriter("base64.txt", false, Encoding.UTF8);
//将字节流转化成base64字符串
//sw.Write(Convert.ToBase64String(buffer));
sw.Close();
Logs(Convert.ToBase64String(buffer), textBox2.Text, false);
}
/// <summary>
/// 校验
/// </summary>
private void valid()
{
if (comboBox1.Text.Trim() == "PDF转BASE64" && !textBox1.Text.ToUpper().EndsWith(".PDF"))
{
label3.Text = "请选择PDF 文件";
return;
}
else if (comboBox1.Text.Trim() == "BASE64转PDF" && !textBox1.Text.ToUpper().EndsWith(".TXT"))
{
label3.Text = "请选择TXT 文件";
return;
}
else if (comboBox1.Text.Trim() == "BASE64转图片" && !textBox1.Text.ToUpper().EndsWith(".PDF"))
{
label3.Text = "请选择TXT 文件";
return;
}
else if (comboBox1.Text.Trim() == "图片转BASE64" && !textBox1.Text.ToUpper().EndsWith(".JPG") && textBox1.Text.ToUpper().EndsWith(".PNG"))
{
label3.Text = "请选择图片【jpg|png】 文件";
return;
}
}
/// <summary>
/// 写日志
/// </summary>
/// <param name="str"> 文件内容</param>
/// <param name="FileName">文件名</param>
/// <param name="ifAdd">是否增量</param>
public static void Logs(string str, string FileName, bool ifAdd)
{
System.IO.TextWriter output;
System.IO.FileInfo errLogFs = new System.IO.FileInfo(FileName);
try
{
if (ifAdd == true)
{
output = File.AppendText(FileName);
output.WriteLine(str + "\r\n");
output.Close();
}
else
{
File.Delete(FileName);
output = File.AppendText(FileName);
output.WriteLine(str + "\r\n");
output.Close();
}
}
catch (Exception ex)
{
}
}
#endregion
#region 变量
#endregion
#region 事件
private void Form1_Load(object sender, EventArgs e)
{
comboBox1.Text = "BASE64转PDF";
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
label3.Text = "-";
string fullFileName = textBox1.Text;
if (!string.IsNullOrEmpty(fullFileName))
{
if (comboBox1.Text.Trim() == "PDF转BASE64")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".txt";
}
else if (comboBox1.Text.Trim() == "BASE64转PDF")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".pdf";
}
else if (comboBox1.Text.Trim() == "BASE64转图片")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".jpg";
}
else if (comboBox1.Text.Trim() == "图片转BASE64")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".txt";
}
}
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = "";
if (string.IsNullOrEmpty(this.comboBox1.Text.Trim()))
{
textBox1.Text = "请选择生成类别";
}
OpenFileDialog dialog = new OpenFileDialog();
if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
string fullFileName = dialog.FileName;
textBox1.Text = fullFileName;
if (comboBox1.Text.Trim() == "PDF转BASE64")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".txt";
}
else if (comboBox1.Text.Trim() == "BASE64转PDF")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".pdf";
}
else if (comboBox1.Text.Trim() == "BASE64转图片")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".jpg";
}
else if (comboBox1.Text.Trim() == "图片转BASE64")
{
textBox2.Text = fullFileName.Substring(0, fullFileName.IndexOf(".")) + ".txt";
}
}
}
private void button2_Click(object sender, EventArgs e)
{
if (comboBox1.Text.Trim() == "PDF转BASE64")
{
valid();
pdfConvertbase64();
}
else if (comboBox1.Text.Trim() == "BASE64转PDF")
{
valid();
base64Convertpdf();
}
else if (comboBox1.Text.Trim() == "BASE64转图片")
{
valid();
base64ConvertPic();
}
else if (comboBox1.Text.Trim() == "图片转BASE64")
{
valid();
PicConvertbase64();
}
label3.Text = "转换完成";
}
#endregion
}
}
原文链接：http://www.jxszl.com/biancheng/C/556419.html
