为什么点击两次上传按钮才能上传(后台代码完全没有问题,最大的可能就是js的问题)<script language=javascript>
function a()
{
Form1.upfile1.click();
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<INPUT id="upfile1" type="file" style="WIDTH: 488px; HEIGHT: 22px;DISPLAY: none;" size="62" runat="server">
<asp:Button id="Button1" style="Z-INDEX: 101; LEFT: 632px; POSITION: absolute; TOP: 224px" runat="server"
Text="Button"></asp:Button>
<INPUT type="button" value="打开上传窗口" onclick="a();">
</form>
</body>
</HTML>
后台;
private void Button1_Click(object sender, System.EventArgs e)
{
for(int i=0;i<Request.Files.Count;i++)
{
if(Request.Files[i].ContentLength >0)
{
string filename = System.IO.Path.GetFileName(Request.Files[i].FileName);
Request.Files[i].SaveAs(Server.MapPath("img\\"+filename));
} Response.Write("1");
Response.Write("保存成功!");
}
}现象非常怪,点击两次才上传文件,点第一次时上传控件的值就变成空的了,点第二次时才上传。
function a()
{
Form1.upfile1.click();
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<INPUT id="upfile1" type="file" style="WIDTH: 488px; HEIGHT: 22px;DISPLAY: none;" size="62" runat="server">
<asp:Button id="Button1" style="Z-INDEX: 101; LEFT: 632px; POSITION: absolute; TOP: 224px" runat="server"
Text="Button"></asp:Button>
<INPUT type="button" value="打开上传窗口" onclick="a();">
</form>
</body>
</HTML>
后台;
private void Button1_Click(object sender, System.EventArgs e)
{
for(int i=0;i<Request.Files.Count;i++)
{
if(Request.Files[i].ContentLength >0)
{
string filename = System.IO.Path.GetFileName(Request.Files[i].FileName);
Request.Files[i].SaveAs(Server.MapPath("img\\"+filename));
} Response.Write("1");
Response.Write("保存成功!");
}
}现象非常怪,点击两次才上传文件,点第一次时上传控件的值就变成空的了,点第二次时才上传。
不过,那个客户端的事件应该是绑定在Button1上的
function a()
{
Form1.Button1.click();}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="lianxi.aspx.cs" Inherits="lianxi" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /></div>
</form>
</body>
</html>后台
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;public partial class lianxi : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{ }
protected void Button1_Click(object sender, EventArgs e)
{
for(int i=0;i<Request.Files.Count;i++)
{
if(Request.Files[i].ContentLength >0)
{
string filename = System.IO.Path.GetFileName(Request.Files[i].FileName);
Request.Files[i].SaveAs(Server.MapPath("img\\"+filename));}Response.Write("1");
Response.Write("保存成功!");} }
}