Question

所以我的aspx文件中有一些ASP.NET文件上传控件 -

 <asp:FileUpload ID="fulNature" class="form-control summer" runat="server" /><asp:Labe ID="lblNature" runat="server" Text="Label" Visible="false"></asp:Label>
 <asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="fulNature" Display="Dynamic"
                        ErrorMessage="File size should not be greater than 1 MB." ForeColor="#FF3300" OnServerValidate="ValidateFileSize"></asp:CustomValidator>

<asp:FileUpload ID="fulIndustrial" class="form-control summer" runat="server" /><asp:Label ID="lblIndustrial" runat="server" Text="Label" Visible="false"></asp:Label>
<asp:CustomValidator ID="CustomValidator2" runat="server" ControlToValidate="fulIndustrial" Display="Dynamic"
                        ErrorMessage="File size should not be greater than 1 MB." ForeColor="#FF3300" OnServerValidate="ValidateFileSize"></asp:CustomValidator>

我正试图用一个C＃验证器限制文件大小 -

protected void ValidateFileSize(object source, ServerValidateEventArgs args)
{
    var validator = (source as CustomValidator);
    string controlToValidate = validator.ControlToValidate;
    FileUpload SubmittedUpload = validator.NamingContainer.FindControl(controlToValidate) as FileUpload;

    if (SubmittedUpload.FileBytes.Length > 1048576) //  A little padding added.
    {
        args.IsValid = false;
    }
    else
    {
        args.IsValid = true;
    }
}

问题是验证器永远不会触发，无论文件大小如何。我必须在这里遗漏一些简单的东西，但我只是没有看到它。

Answer 1

您可以直接获取上传文件的大小：

long size=fulNature.FileContent.Length;

Answer 2

尝试：

long filesize = SubmittedUpload.FileContent.Length;

ASP.NET文件大小验证程序未验证

2 个答案: