Question

我要读取docx文件的字节，我有这个方法：

public ActionResult Create(Model myModel, HttpPostedFileBase fileUpload)
        {

                        MemoryStream ms = new MemoryStream();
                        byte[] bin = new byte[100]; 
                        long rdlen = 0;              
                        long totlen = fileUpload.InputStream.Length;    
                        int len;

                        while (rdlen < totlen)
                        {
                            len = fileUpload.InputStream.Read(bin, 0, 100);
                            ms.Write(bin, 0, len);
                            rdlen += len;
                        }
}

文件的总长度是11338，但它只读到11326然后它会陷入无限循环，因为当它到达11326时，这个len = fileUpload.InputStream.Read(bin, 0, 100);只会返回0作为值。奇怪的是，如果我上传一个txt文件，它就可以正常工作。

由于

Answer 1

        byte[] myFile;
        using (var memoryStream = new MemoryStream())
        {
            httpPostedFileBase.InputStream.CopyTo(memoryStream);
            myFile = memoryStream.ToArray();// or use .GetBuffer() as suggested by Morten Anderson
        }

Answer 2

这是有效的，我自己使用它上传的图像。

public ActionResult Create(Model myModel, HttpPostedFileBase fileUpload)
{ 
    byte[] Data = null;

    using (var binaryReader = new BinaryReader(fileUpload.InputStream))
    {
        Data = binaryReader.ReadBytes(fileUpload.ContentLength);
    }
}

MVC 4从HttpPostedFileBase读取字节

2 个答案: