RequiredFieldValidation for FileUpload

本文关键字：FileUpload for RequiredFieldValidation | 更新日期: 2023-09-27 18:12:02

我的代码是这样的:

 <asp:Label ID="importLabel" runat="server" Text="Update Prices" CssClass="fieldlabel" />
                <asp:FileUpload ID="importFileUpload" runat="server" />

我需要添加一个必需的字段验证器，只接受.csv文件。我该怎么做呢?

谢谢!

RequiredFieldValidation for FileUpload

<asp:RegularExpressionValidator ID="uplValidator" runat="server" ControlToValidate="importFileUpload" ErrorMessage="Only .csv files are allowed" 
                            ValidationExpression="(.+'.([Cc][Ss][Vv]))" />

添加此REV以使其工作!