MVC 图像 - 在选项卡中显示而不是下载到文件

Question

我有以下从 web api 获取 PNG 的控制器方法。

        public async Task<ActionResult> RealTimeUpdate(string fundName)
        {
        string docPath = ConfigurationManager.AppSettings["RealTimeUpdate"].Replace("{fundname}",fundName).ToString();
        docPath = docPath.Replace("\\\\", "\\");
        docPath = docPath.Replace("\"", "");

        string url = ServiceUrl + "api/RealTime/" + fundName;
        HttpResponseMessage response = await client.GetAsync(url);
        if (response.IsSuccessStatusCode)
        {
            var dataStream = response.Content.ReadAsStringAsync().Result;
            if (dataStream == null)
                return HttpNotFound();
            var _buffer = JsonConvert.DeserializeAnonymousType(dataStream, new { _buffer = (byte[])null })._buffer;

            // If user decides to save the file, this will help...
            //Response.AddHeader("content-disposition", "filename=" + Path.GetFileName(path));
            return File(_buffer, "application/png");
        }
        return View("Error");
    }

我这样称呼它：

<a href="@Url.Action("RealTimeUpdate", "Documents", new { FundName = "RealTimeUpdate"})" class="btn rt-info rtBtn" target="_blank">Real Time Update</a>

如您所见，我有 target="_blank"，但是，它不会在新选项卡中显示图像，而是将其下载到我的文档文件夹中。如何让它显示在选项卡中？

Answer 1

你需要一个 ImageController 来渲染它。

一旦你有了一个控制器，你就可以如下渲染：

public class ImageController{

public ActionResult ShowImage(string path) 
{

    return File(path);
}

}

在你看来：

<img src="@Url.Action("Render","Image", new {id =1  // or path })" />

此答案取自https://stackoverflow.com/a/16142574/5586581