[C#/COMMON] BASE64 문자열 구하기

using System;
using System.IO;

#region BASE64 문자열 구하기 - GetBase64String(filePath)

/// <summary>
/// BASE64 문자열 구하기
/// </summary>
/// <param name="filePath">파일 경로</param>
/// <returns>BASE64 문자열</returns>
public string GetBase64String(string filePath)
{
    FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);

    byte[] bufferByteArray = new byte[fileStream.Length];

    fileStream.Read(bufferByteArray, 0, (int)fileStream.Length);

    MemoryStream memoryStream = new MemoryStream(bufferByteArray);

    string base64String = Convert.ToBase64String(memoryStream.ToArray());

    memoryStream.Close();

    return base64String;
}

#endregion