Question

我正在将基地64的代码转换成图像,我正在以下列方式挽救和展示这一形象。

var kpin = Base64ToImage(TextBox1.Text);
kpin.Save(@"e:myim.png");
Image1.ImageUrl = @"e:myim.png";

并且

public Image Base64ToImage(string base64String)
{
    byte[] imageBytes = Convert.FromBase64String(base64String);
    MemoryStream ms = new MemoryStream(imageBytes, 0,
      imageBytes.Length);
    ms.Write(imageBytes, 0, imageBytes.Length);
    Image image = Image.FromStream(ms, true);
    return image;
}

而这一过程是很出色的,但我不需要在硬盘中保存形象。如何直接展示这种形象,而不节约硬盘和检索。

Answer 1

而不是制定《形象》。形象与你形象的道路相去,你可以做几个事情:

Use an img tag with the Base64 data in it directly - http://www.sweeting.org/mark/blog/2005/07/12/base64-encoded-images-embedded-in-html Not all browsers support this.
Create an Action or Webform (depending on whether you re using ASP.NET MVC or not) that takes as input whatever you need to either retrieve or generate the Base64 encoded data, and then set the response headers to serve the correct content type (image/png or something) and write the image directly to the Response.OutputStream (or use ContentResult in ASP.NET MVC). Tons of examples via Stackoverflow on how to do either.

-

Answer 2

a. 完全用图像标的双向双向,仅指:

public void Base64ToResponse(string base64String)
{
    Response.ContentType = "text/png"; //or whatever...
    byte[] imageBytes = Convert.FromBase64String(base64String);
    Response.OutputStream(imageBytes, 0, imageBytes.Length);
}

友情链接