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AllBase/Base64Encode.cs

@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Text;
 
 namespace AllBase
@@ -72,5 +73,54 @@ namespace AllBase
         {
             return DecodeBase64(Encoding.UTF8, result);
         }
+
+        /// <summary>
+        /// 文件转Base64编码
+        /// </summary>
+        /// <param name="fileName">文件全路径</param>
+        /// <returns></returns>
+        public static string DocumentToBase64Str(string fileName)
+        {
+            FileStream filestream = new FileStream(fileName, FileMode.Open);
+
+            byte[] bt = new byte[filestream.Length];
+            //调用read读取方法
+            filestream.Read(bt, 0, bt.Length);
+            string base64Str = Convert.ToBase64String(bt);
+            filestream.Close();
+            return base64Str;
+        }
+
+        /// <summary>
+        /// Base64字符串转文件并保存
+        /// </summary>
+        /// <param name="base64String">base64字符串</param>
+        /// /// <param name="fileFullPath">保存的文件路径 </param>
+        /// <param name="fileName">保存的文件名</param>
+        /// <returns>是否转换并保存成功</returns>
+        public static bool Base64StringToFile(string base64String, string fileFullPath, string fileName)
+        {
+            bool opResult = false;
+            try
+            {
+
+                if (!Directory.Exists(fileFullPath))
+                {
+                    Directory.CreateDirectory(fileFullPath);
+                }
+                MemoryStream stream = new MemoryStream(Convert.FromBase64String(base64String));
+                FileStream fs = new FileStream(fileFullPath + "\\" + fileName, FileMode.OpenOrCreate, FileAccess.Write);
+                byte[] b = stream.ToArray();
+                fs.Write(b, 0, b.Length);
+                fs.Close();
+
+                opResult = true;
+            }
+            catch (Exception e)
+            {
+
+            }
+            return opResult;
+        }
     }
 }