Question

我们有一份Winform客户数据,即我们撰写的网络服务。该客户提供XML档案中的文件,一般是一份PDF文件,在XML档案中写到64个编码的双手领域。

客户成功地下载、编码和正确开出99%的文件。

然而,当客户发出这一呼吁时,我们开始碰到一些失败的档案:

 byte[] buffer = Convert.FromBase64String(xNode["fileIMAGE"].InnerText);

系统。

Message="Invalid character in a Base-64 string."
Source="mscorlib"

We ve written out the base64 blob from the XML file to a text file. I don t see any "" characters. I could post the whole blob, but it s quite large.

任何想法?

Answer 1

Issue Resolved

为了将档案从服务器上流出,我们利用反馈功能阅读/填写档案。我们是每座nk64的基底。 EPAONG。

第-号决议向全球记忆流标出的所有空白。在呼吁结束时,第64号基则正在编码。

In the callback function:

 if (brData.ChunkNo == 1)
    {

        // Set the Content-type of the file
        if (brData.MimeType.Length < 1)
        {
            mimeType = "application/unknown";
        }
        else
        {
            mimeType = brData.MimeType;
        }

        msbase64Out = new MemoryStream();
    }


    if (brData.bytesJustRead > 0)
    {
        fileMS.WriteTo(msbase64Out);

    }


   if (brData.bytesRemaining < 1)
    {
        byte[] imgBytes = msbase64Out.ToArray();

        string img64 = Convert.ToBase64String(imgBytes);

        viewdocWriter.WriteString(img64);
    }

msbase64Out is a global memory stream that gets written to each time the callback is called. viewdocWriter is a global XML writer that is responsible for writing out the XML stream that gets sent to the client app.

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