asp.net-mvc - 如何将字节数组图像/png从控制器方法（id）显示到 Asp.net 视图

Question

public ActionResult Overview(int subId, string countrycod)
{
    byte[] objByteArray =(byte[]) objResponse.Data;
    //return View();
    System.IO.MemoryStream imagestream = new System.IO.MemoryStream();
    imagestream.Write(objByteArray, 0, objByteArray.Length);
    //return new FileStreamResult(new System.IO.MemoryStream(objByteArray,true),"image/png");
    return new FileStreamResult(imagestream, "image/png");
}

Answer 1

你不需要内存流，你可以直接返回字节数组：

public ActionResult Overview(int subId, string countrycod) 
{
    byte[] objByteArray = (byte[])objResponse.Data;
    return File(objByteArray, "image/png");
}

然后在视图内部使用一个<img>标签，您将指向Overview控制器操作：

剃刀：

<img src="@Url.Action("Overview", "SomeController", new { subId = 123, countrycod = "en-US" })" />

网络表单：

剃刀：

<img src="<%= Url.Action("Overview", "SomeController", new { subId = 123, countrycod = "en-US" }) %>" />