单击FileUpload按钮时的OnClick事件

Question

单击 asp：FileUpload 按钮是否可以触发OnClick事件？

Answer 1

根据w3schools，类型文件的输入可以支持所有标准events。 所以你可以做的是控制点击的javascript事件：

YOURCONTROL.Attributes.Add("onclick","YourLogic");

Answer 2

你可以使用flash代码将文件上传者作为可点击的按钮。但为此你需要下载swfupload.swf文件。

    <input type="file" id="uplaodExcel" name="uplaodExcel" />

以下是javascript代码：

Sys.Application.add_init(function () {
    HideError();
    $("#uplaodExcel").makeAsyncUploader({
        upload_url: 'EventName',//Event you want to occur on click
        flash_url: '../Scripts/swfupload.swf',//flash file path that you download
        button_image_url: '@Url.Content("~/Content/blankButton.png")',// for button style
        file_size_limit: "10MB",
        file_types: "*.XLS; *.xlsx", //File extension you can provide any
        disableDuringUpload: 'INPUT[type="submit"]',
        upload_success_handler: function (file, server_data, receivedResponse) {
            var data = "";
            try {
                // you can add your code here
            } catch (e) { }

        }
    });
});