如何从asp.net服务器控件使用jQuery传递价值？ [英] how to pass value from asp.net server control using jQuery?

问题描述

我更新了code。与code后面。我在做一些动态与标签contrtol。

我有以下的jQuery code的工作，因为它是（合格的检验值），但我想要做的是通过标签控制（lblNames）的价值。我使用的标签控制收集上传的文件名。有什么办法？

jQuery的：

  $（文件）。就绪（函数（）{
    $（＃btnUpload）。点击（函数（）{
        $（＃注意事项，top.document）.VAL（'测试'）;
    }）;
}）;
 

ASPX code：

 ＆LT; ASP：标签ID =lblNames=服务器可见=真＆GT;＆LT; / ASP：标签＆gt;
 

code背后：

 保护小组btnUpload_Click（BYVAL发件人为对象，BYVAL E上System.EventArgs）把手btnUpload.C​​lick
    昏暗fileExt作为字符串
    fileExt = System.IO.Path.GetExtension（FileUpload1.FileName）    如果（fileExt＆LT;＆gt;中的.exe），然后
        昏暗的文件名作为新的列表（串）        尝试
            昏暗的HFC作为HttpFileCollection = Request.Files
            lblFiles.Text =的String.Empty
            lblNames.Text =的String.Empty            对于我作为整数= 0〜hfc.Count  -  1
                DIM HPF作为HttpPostedFile = HFC（I）
                如果hpf.ContentLength＆GT; 0，则
                    fileNames.Add（hpf.FileName）
                    hpf.SaveAs（使用Server.Mappath（/目录）及\\＆放大器; System.IO.Path.GetFileName（hpf.FileName））
                    lblFiles.Text + =＆LT; B＆GT;文件：LT; / B＆gt;中＆安培; hpf.FileName＆安培; 与＆amp; 上传成功＆LT;！BR /＆gt;中
                    lblNames.Text + = hpf.FileName＆安培; ，
                其他
                    lblWarning.Text =请选择要上传的文件。
                万一
            接下来，我
        抓住EX为例外        结束Try
 

解决方案

您可以轻松地插入该ID到脚本，将其拉出这种方式：

  $（文件）。就绪（函数（）{
    $（＃btnUpload）。点击（函数（）{
        $（＃注意事项，top.document）.VAL（$（＃＆LT;％= lblNames.ClientID％GT;）文本（））;
    }）;
}）;
 

I UPDATED the code with code behind. I'm doing something dynamic with the label contrtol.

I have the following jQuery code working as it is (passing the value of 'test") but what I want to do is to pass the value of the label control (lblNames). I'm using the label control to collect the uploaded file names. Is there a way?

jQuery:

$(document).ready(function () {
    $("#btnUpload").click(function () {
        $("#Notes", top.document).val('test');
    });
});

ASPX code:

<asp:Label ID="lblNames" runat="server" visible="true" ></asp:Label>

Code Behind:

    Protected Sub btnUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs)    Handles btnUpload.Click
    Dim fileExt As String
    fileExt = System.IO.Path.GetExtension(FileUpload1.FileName)

    If (fileExt <> ".exe") Then
        Dim fileNames As New List(Of String)

        Try
            Dim hfc As HttpFileCollection = Request.Files
            lblFiles.Text = String.Empty
            lblNames.Text = String.Empty

            For i As Integer = 0 To hfc.Count - 1
                Dim hpf As HttpPostedFile = hfc(i)
                If hpf.ContentLength > 0 Then
                    fileNames.Add(hpf.FileName)
                    hpf.SaveAs(Server.MapPath("/directory") & "\" & System.IO.Path.GetFileName(hpf.FileName))
                    lblFiles.Text += "<b>File: </b>" & hpf.FileName & "     " & "    Uploaded Successfully! <br />"
                    lblNames.Text += hpf.FileName & ", "
                Else
                    lblWarning.Text = "Please choose a file to upload."
                End If
            Next i
        Catch ex As Exception

        End Try

解决方案

You can easily insert the ID into your script and pull it out that way:

$(document).ready(function () {
    $("#btnUpload").click(function () {
        $("#Notes", top.document).val( $("#<%= lblNames.ClientID %>").text() );
    });
});

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