如何使用C#将byte []转换为HttpPostedFileBase [英] how to convert a byte[] to HttpPostedFileBase using c#

问题描述

如何使用c#将byte []转换为HttpPostedFileBase.在这里，我尝试了以下方式.

how to convert byte[] into HttpPostedFileBase using c#. here i have tried the following way.

byte[] bytes = System.IO.File.ReadAllBytes(localPath);
HttpPostedFileBase objFile = (HttpPostedFileBase)bytes;

我遇到了一个无法隐式转换的错误.

I am getting an cannot implicitly convert error.

推荐答案

如何创建自定义发布文件? :)

What about creating a custom postedfile? :)

public class MemoryPostedFile : HttpPostedFileBase
{
    private readonly byte[] fileBytes;

    public MemoryPostedFile(byte[] fileBytes, string fileName = null)
    {
        this.fileBytes = fileBytes;
        this.FileName = fileName;
        this.InputStream = new MemoryStream(fileBytes);
    }

    public override int ContentLength => fileBytes.Length;

    public override string FileName { get; }

    public override Stream InputStream { get; }
}

您可以像这样简单地使用:

That you can simply use like this:

byte[] bytes = System.IO.File.ReadAllBytes(localPath);
HttpPostedFileBase objFile = (HttpPostedFileBase)new MemoryPostedFile(bytes);

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