需要在asp.net的图像控件中显示注释附件中的图像. [英] Need to display the image from annotation attachment in the image control in asp.net.

问题描述

ColumnSet cols1 = new ColumnSet();
        cols1.Attributes = new string[] { "filename", "mimetype", "documentbody"};

        annotation annotationAttachment = (annotation)myCRMService.Retrieve(EntityName.annotation.ToString(), annotationId, cols1);

        String strfilecontent = annotationAttachment.documentbody.Replace(" ","+");
        String strfilename = annotationAttachment.filename;
        String strfiletype = annotationAttachment.mimetype
        img1.Src = "Handler.ashx?id="+strfilecontent+"&filename="+strfilename+"&filetype="+strfiletype;

推荐答案

在Handler.ashx中，创建一个BitMap对象，并从通过QueryString给定的路径中加载图像，并将其保存在您的内存流中，并将其转换为字节数组，并将这些字节数组作为字节内容发送到aspx页. .如下所示:

在Handler.ashx文件中

Hi,
In Handler.ashx, create a BitMap Object and Load the image from the path given through the QueryString and save it in you memory stream and convert it in to a byte array and send these byte array as the byte content to your aspx page... as shown here:

In Handler.ashx file

Bitmap objBmp = new Bitmap("[Valid File Path]");
MemoryStream ms = new MemoryStream();
objBmp.Save(ms, ImageFormat.Png);
byte[] bmpBytes = ms.GetBuffer();
context.Response.ContentType = "image/png";
context.Response.BinaryWrite(bmpBytes);

在您的Aspx页面中

In your Aspx Page

img1.ImageUrl = "~/Handler.ashx";

就这样...希望对您有帮助...

That''s It... Hope it is helpfull to you...

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