如何渲染视图图像。图像值=字节[]。 asp.net的MVC [英] how to render image in view. value of image = byte[]. asp.net mvc

问题描述

我有类型的数据库映像值图像。
鉴于下保存的类型字节[]
我想它显示在我的asp.net mvc的视图图像。最好的一样的形象。
如果图像是在 Model.ImageData保存的值。

i have image value in database of type "image". in view saved under type byte[] i want to show it as image in my asp.net mvc view. the best its just as image. value if image is saved under Model.ImageData.

我试图解决这个问题是这样的：

i tried to solve it like this:

<img height="450px" width="330px" src="<%= historyItem.ImageData %>" alt="image" />

但它不工作。
怎么做？

but it doesnt work. how to do that?

推荐答案

你的方法的问题是，你已经包含了图像数据的视图模型的一部分​​，但在＆LT; IMG＆GT; 标记预计将在的src 属性的URL。有些浏览器支持的base64嵌入图像，从而HTML里面放，但我会建议你避免这种方法，因为您的标记的量可能会增长。

The problem with your approach is that you have included the image data as part of your view model but the <img> tag expects an URL in the src attribute. Some browsers support base64 embedded images to be put inside the HTML but I would recommend you to avoid this approach as the volume of your markup might grow.

所以，你需要一个控制器动作走秀图片：

So you will need a controller action which serves the image:

public ActionResult Image()
{
    byte[] imageData = ...
    return File(imageData, "image/png");
}

然后 IMG 标签的的src 属性指向这个控制器动作：

and then point the src attribute of the img tag to this controller action:

<img height="450px" width="330px" src="<%= Url.Action("Image") %>" alt="image" />

这篇关于如何渲染视图图像。图像值=字节[]。 asp.net的MVC的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！