如何在asp：Image对象中使用.ashx处理程序？-HowdoIusean.ashxhandlerwithanasp:Imageobject?

You are printing out the path to the image instead of the actual image contents. Use

您正在打印图像的路径而不是实际的图像内容。使用

context.Response.WriteFile(context.Server.MapPath(imagePath));

method instead.

Make sure you restrict the path to some safe location. Otherwise, you might introduce security vulnerabilities as users would be able to see contents of any file on the server.

确保将路径限制在某个安全位置。否则,您可能会引入安全漏洞,因为用户可以看到服务器上任何文件的内容。

This code help to Viewing image by File name From Specified Path.
ex. http://onlineshoping.somee.com/Fimageview.ashx?FImageName=FrozenToront.Jpg

And You may use .ashx in your ASPX html body.

Example:

此代码有助于按文件名从指定路径查看图像。恩。 http://onlineshoping.somee.com/Fimageview.ashx?FImageName=FrozenToront.Jpg你可以在你的ASPX html体内使用.ashx。例:

    <%@
        WebHandler Language="C#"
        Class="Fimageview"
    %>

    /// 

    /// Created By Rajib Chowdhury Mob. 01766-306306; Web: http://www.rajibs.tk
    /// Email: mysuccessstairs@hotmail.com
    /// FB: https://www.facebook.com/fencefunny
    /// 
    /// Complete This Page Coding On Fabruary 12, 2014
    /// Programing C# By Visual Studio 2013 For Web
    /// Dot Net Version 4.5
    /// Database Virsion MSSQL Server 2005
    /// 

    using System;
    using System.IO;
    using System.Web;

public class Fimageview : IHttpHandler {

    public void ProcessRequest(HttpContext context)
    {

        HttpResponse r = context.Response;
        r.COntentType= "image/png";
        string file = context.Request.QueryString["FImageName"];
        if (string.IsNullOrEmpty(file))
        {
            context.Response.Redirect("~/default");//If RequestQueryString Null Or Empty
        }
        try
        {
            if (file == "")
            {
                context.Response.Redirect("~/Error/PageNotFound");
            }
            else
            {
                r.WriteFile("/Catalog/Images/" + file); //Image Path If File Name Found
            }
        }
        catch (Exception)
        {
            context.Response.COntentType= "image/png";
            r.WriteFile("/yourImagePath/NoImage.png");//Image Path If File Name Not Found
        }
    }
    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}

I'm the original poster and I finally figured out the problem. All I had to do was change:

我是原始海报,我终于找到了问题所在。我所要做的就是改变:

to:

Punctuation needs to be changed to its HTML equivalent, so backslashes become %5C, etc..., or else it won't work.

标点符号需要更改为其等效的HTML,因此反斜杠变为%5C等等,否则它将无效。

Oh, I forgot to mention, this is in a DataList. Using Image1.ImageUrl = "Thumbnail.ashx?image=blahblah"; outside of a DataList works perfectly fine, strangely.

哦,我忘了提,这是在DataList中。使用Image1.ImageUrl =“Thumbnail.ashx?image = blahblah”;在DataList之外的工作非常精细,奇怪。