使用asp.net mvc打开字节流文件

发布于 2024-11-28 19:43:44 字数 1247 浏览 1 评论 0原文

在我的 asp.net mvc 应用程序中，我将

文件的缩略图包含在 iframe 中加载的 aspx 页面中。我想使用“打开/保存”对话框打开该文件。文件以图像数据类型上传到数据库。我的 aspx 页面中有以下 html：


                        <%=Html.Hidden("attachmtId", item.ILDAttachmentId) %>
                        
                        
                            <%=item.ILDAttachmentName %>

jquery部分如下

$(文档).ready(function() {

        $(".thumpimage").click(function() {
            var attchmtId = $("#attachmtId").val();
            警报（attchmtId）；
            $.post('/Instruction/OpenInstnDoc', { attchId: attchmtId });
        });
    });

控制器中的函数是

 public ActionResult OpenInstnDoc(int attchId)
    {

        附件 objAttach = new Attachment();
        objAttach = objAttach.GetAttachmentById(attchId);

        byte[] theData = objAttach.BinaryFile;
        Response.AddHeader("内容长度", theData.Length.ToString());
        Response.AddHeader("content-disposition", "inline; filename=" + objAttach.AttachmentName + "");
        返回文件（theData，objAttach.MineType）；
    }

我无法打开该文件。谁能帮我解决这个问题吗？

原文

Im my asp.net mvc application I have a

enclosing the thumb image of the file in an aspx page loaded in an iframe. I want to open the file with an Open/Save dialogbox. The file is uploaded to the database in image datatype.
My aspx page has the following html in it:

<li class="thumpimage">
                        <%=Html.Hidden("attachmtId", item.ILDAttachmentId) %>
                        <img src="<%=imgurl %>" alt="test" height="81" width="76" />
                        <span class="thumb_descrp">
                            <%=item.ILDAttachmentName %></span></li>

The jquery part is as follows

$(document).ready(function() {

        $(".thumpimage").click(function() {
            var attchmtId = $("#attachmtId").val();
            alert(attchmtId);
            $.post('/Instruction/OpenInstnDoc', { attchId: attchmtId });
        });
    });

And the function in the controller is

 public ActionResult OpenInstnDoc(int attchId)
    {

        Attachment objAttach = new Attachment();
        objAttach = objAttach.GetAttachmentById(attchId);

        byte[] theData = objAttach.BinaryFile;
        Response.AddHeader("content-length", theData.Length.ToString());
        Response.AddHeader("content-disposition", "inline; filename=" + objAttach.AttachmentName + "");
        return File(theData, objAttach.MineType);
    }

I am not able open the file. Can anyone help me on this?

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找个人就嫁了吧 2024-12-05 19:43:45

您无法使用 ajax 将文件内容流式传输到浏览器并期望收到文件打开/保存对话框的提示。不要调用 $.post，而是尝试

$(document).ready(function() {

    $(".thumpimage").click(function() {
        var attchmtId = $("#attachmtId").val();
        alert(attchmtId);
        //$.post('/Instruction/OpenInstnDoc', { attchId: attchmtId });
        window.location.href = "/Instruction/OpenInstnDoc/" + attchmtId;
    });
});

You cannot use ajax to stream file content to the browser and expect to be prompted with a file open/save dialog. Instead of the call to $.post, try

$(document).ready(function() {

    $(".thumpimage").click(function() {
        var attchmtId = $("#attachmtId").val();
        alert(attchmtId);
        //$.post('/Instruction/OpenInstnDoc', { attchId: attchmtId });
        window.location.href = "/Instruction/OpenInstnDoc/" + attchmtId;
    });
});

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