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網上多的是：using?System;

using?System.Collections.Generic;

using?System.ComponentModel;

using?System.Data;

using?System.Drawing;

using?System.Text;

using?System.Windows.Forms;

using?System.IO;

using?System.Drawing.Imaging;

namespace?base64_img

{

public?partial?class?Form1?:?Form

{

public?Form1()

{

InitializeComponent();

}

//圖片62616964757a686964616fe4b893e5b19e31333335326163?轉為?base64編碼的文本

private?void?button1_Click(object?sender,?EventArgs?e)

{

OpenFileDialog?dlg?=?new?OpenFileDialog();

dlg.Title?=?"選擇要轉換的圖片";

dlg.Filter?=?"Image?files?(*.jpg;*.bmp;*.gif)|*.jpg*.jpeg;*.gif;*.bmp|AllFiles?(*.*)|*.*";

if?(DialogResult.OK?==?dlg.ShowDialog())

{

ImgToBase64String(dlg.FileName);

}

}

//圖片?轉為?base64編碼的文本

private?void?ImgToBase64String(string?Imagefilename)

{

try

{

Bitmap?bmp?=?new?Bitmap(Imagefilename);

this.pictureBox1.Image?=?bmp;

FileStream?fs?=?new?FileStream(Imagefilename?+?".txt",?FileMode.Create);

StreamWriter?sw?=?new?StreamWriter(fs);

MemoryStream?ms?=?new?MemoryStream();

bmp.Save(ms,?System.Drawing.Imaging.ImageFormat.Jpeg);

byte[]?arr?=?new?byte[ms.Length];

ms.Position?=?0;

ms.Read(arr,?0,?(int)ms.Length);

ms.Close();

String?strbaser64?=?Convert.ToBase64String(arr);

sw.Write(strbaser64);

sw.Close();

fs.Close();

MessageBox.Show("轉換成功!");

}

catch?(Exception?ex)

{

MessageBox.Show("ImgToBase64String?轉換失敗/nException:"?+?ex.Message);

}

}

//base64編碼的文本?轉為?圖片

private?void?button2_Click(object?sender,?EventArgs?e)

{

OpenFileDialog?dlg?=?new?OpenFileDialog();

dlg.Title?=?"選擇要轉換的base64編碼的文本";

dlg.Filter?=?"txt?files|*.txt";

if?(DialogResult.OK?==?dlg.ShowDialog())

{

Base64StringToImage(dlg.FileName);

}

}

//base64編碼的文本?轉為?圖片

private?void?Base64StringToImage(string?txtFileName)

{

try

{

FileStream?ifs?=?new?FileStream(txtFileName,?FileMode.Open,?FileAccess.Read);

StreamReader?sr?=?new?StreamReader(ifs);

String?inputStr?=?sr.ReadToEnd();

byte[]?arr?=?Convert.FromBase64String(inputStr);

MemoryStream?ms?=?new?MemoryStream(arr);

Bitmap?bmp?=?new?Bitmap(ms);

bmp.Save(txtFileName?+?".jpg",?System.Drawing.Imaging.ImageFormat.Jpeg);

//bmp.Save(txtFileName?+?".bmp",?ImageFormat.Bmp);

//bmp.Save(txtFileName?+?".gif",?ImageFormat.Gif);

//bmp.Save(txtFileName?+?".png",?ImageFormat.Png);

ms.Close();

sr.Close();

ifs.Close();

this.pictureBox1.Image?=?bmp;

MessageBox.Show("轉換成功！");

}

catch?(Exception?ex)

{

MessageBox.Show("Base64StringToImage?轉換失敗/nException："+ex.Message);

}

}

}

}

總結

以上是生活随笔為你收集整理的c#图片base64去转义字符_C# 将图片转成Base64字符串，再将字符串转成图片，然后将图片存储到服务器文件夹中，求代码。感激不尽...的全部內容，希望文章能夠幫你解決所遇到的問題。

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