用于访问路径“/Image/Uploaded/Panorama.jpg”的 HTTP 动词 POST不允许
我有一个链接按钮：
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" Text="View" PostBackUrl='<%# Eval("Name", "../Image/Uploaded/{0}") %>'>
Eval 值基于加载到表单视图的图像。
例如，我想查看 Panorama.jpg 图像，当我单击该链接按钮时，错误显示：
The HTTP verb POST used to access path '/Image/Uploaded/Panorama.jpg' is not allowed.
我已尝试使用此代码来解决，但结果是相同的：
Dim imgUplPath As String = Request.PhysicalApplicationPath & "../Image/Uploaded/"
Dim f2 As New FileIOPermission(FileIOPermissionAccess.Read, imgUplPath)
Try
f2.Demand()
Catch s As SecurityException
Console.WriteLine(s.Message)
End Try
任何人都可以帮助我吗？多谢
I've a link button:
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" Text="View" PostBackUrl='<%# Eval("Name", "../Image/Uploaded/{0}") %>'>
The Eval value is based on what image is loaded to the formview.
For example, I want to view the Panorama.jpg image and while I am clicking that linkbutton, the error shows:
The HTTP verb POST used to access path '/Image/Uploaded/Panorama.jpg' is not allowed.
I've tried using this code to solved but it is the same:
Dim imgUplPath As String = Request.PhysicalApplicationPath & "../Image/Uploaded/"
Dim f2 As New FileIOPermission(FileIOPermissionAccess.Read, imgUplPath)
Try
f2.Demand()
Catch s As SecurityException
Console.WriteLine(s.Message)
End Try
Anyone can help me, please? Thanks a lot
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您正在尝试对图像资源 -
jpg执行POST请求。这是无效的；没有针对jpg资源的POST请求的处理程序。也许您正在寻找的是直接链接到图像 URL，而不是使用
LinkButton的PostBackUrlYou are trying to do a
POSTrequest to an image resource -jpg. That's not valid; there's no handler forPOSTrequests forjpgresources.Perhaps what you are looking for is to link right to the image URL, instead of using the
PostBackUrlof aLinkButton在标头中，您需要允许 POST
Response.AddHeader("Access-Control-Allow-Methods", "POST,GET,OPTIONS")
In your header , you will need to allow POST
Response.AddHeader("Access-Control-Allow-Methods", "POST,GET,OPTIONS")
在我看来，您正在尝试使用 < code>ImageButton 控件而不是
LinkButton控件，您可能正在寻找ImageUrl而不是PostBackUrl。ImageUrl最终在 htmlimg元素上呈现为src。PostBackUrl是单击图像按钮时用于回发的 URL。Looks to me that you are trying to use the
ImageButtoncontrol as opposed to theLinkButtoncontrol and you are probably looking forImageUrlinstead ofPostBackUrl.ImageUrlends up being rendered assrcon the htmlimgelement.PostBackUrlis the URL that will be used to post back when the image button is clicked.