像google,QQ,163那样一次上传多个文件

前台页面

<form id="frmUpload" runat="server" enctype="multipart/form-data">
    
<div>
     
<table width="100%" border="0px" cellpadding="0px" cellspacing="2">
                    
<tr height="80">
                        
<td align="right" bgcolor="#EAEAEA">
                            上传图片:
</td>
                        
<td bgcolor="#f7f7f7" valign="top">
                            
<table cellspacing="0" cellpadding="0" width="100%" align="left" border="0">
                                
<tr height="30">
                                    
<td class="tab_font_left" align="left" width="100%">
                                        
<div>
                                            
<table width="100%" border="0" cellpadding="2" cellspacing="1" id="SignFrame">
                                                
<tr id="trHeader" align="center">
                                                    
<td width="60" height="25px;" align="center" bgcolor="#1C5E55" style="color: #FFFFFF">
                                                        序号
</td>
                                                    
<td bgcolor="#1C5E55" align="center" style="color: #FFFFFF">
                                                        上传文件
</td>
                                                
</tr>
                                            
</table>
                                        
</div>
                                        
<div>
                                            
<input type='file' style="display: none;" size='50' id="file1" runat="server" />
                                            
&nbsp;<input type="button" name="Submit" value="添加上传文件" onclick="AddSignRow()" />
                                            
&nbsp;
                                            
<input type="button" name="Submit2" value="清空" onclick="ClearAllSign()" />
                                            
<input name='txtTRLastIndex' type='hidden' id='txtTRLastIndex' value="1" />
                                            
<br />
                                            
<span class="notetext">注:最多只能上传三个图片,如果需要更新,请先删除原图片</span>
                                        
</div>
                                    
</td>
                                
</tr>
                            
</table>
                        
</td>
                    
</tr>
                
</table>
    
</div>
    
<div>
    
<table width="100%" border="0" cellpadding="0" cellspacing="0" align="center">
    
<tr height="30">
        
<td align="center" colspan="2" bgcolor="#f7f7f7">
            
<asp:Button ID="btnInsert" Text="确认添加" runat="server" OnClick="btnInsert_Click" />&nbsp;&nbsp;<asp:Button ID="btnBack" Text="放弃返回" runat="server" />
        
</td>
    
</tr>
</table>
    
</div>
    
    
</form>
 

 脚本:

<script type="text/javascript" language="javascript">
<!--
var TempCount=1;//不可删除!downmoon 20071025
    // Example: obj = findObj("image1");
    function findObj(theObj, theDoc)
    {
          
var p, i, foundObj;
          
if(!theDoc) theDoc = document;
          
if( (p = theObj.indexOf("?")) > 0 && parent.frames.length)
          {
            theDoc 
= parent.frames[theObj.substring(p+1)].document;
            theObj 
= theObj.substring(0,p);
          }
          
if(!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];
          
for (i=0!foundObj && i < theDoc.forms.length; i++)
            foundObj 
= theDoc.forms[i][theObj];
          
for(i=0!foundObj && theDoc.layers && i < theDoc.layers.length; i++)
            foundObj 
= findObj(theObj,theDoc.layers[i].document);
          
if(!foundObj && document.getElementById) foundObj = document.getElementById(theObj);
         
          
return foundObj;
    }
    
function AddSignRow()
    {
                
if(TempCount>3return;
                 
var txtTRLastIndex = findObj("txtTRLastIndex",document);
                 
var rowID = parseInt(txtTRLastIndex.value);
                 
var signFrame = findObj("SignFrame",document);
                 
var newTR = signFrame.insertRow(signFrame.rows.length);
                 newTR.id 
= "SignItem" + rowID;
                 
var newNameTD=newTR.insertCell(0);
                 newNameTD.innerHTML 
= newTR.rowIndex.toString();
                 
var newNameTD=newTR.insertCell(1);
                  newNameTD.innerHTML 
= "<input name='MyFile" + rowID + "' id='MyFile" + rowID + "' type='file' size='50' />";
                 txtTRLastIndex.value 
= (rowID + 1).toString() ;
                 TempCount
=TempCount+1;
    }
    
function DeleteSignRow(rowid)
    {
         
var signFrame = findObj("SignFrame",document);
         
var signItem = findObj(rowid,document);
         
var rowIndex = signItem.rowIndex;
         signFrame.deleteRow(rowIndex);
         
for(i=rowIndex;i<signFrame.rows.length;i++){
          signFrame.rows[i].cells[
0].innerHTML = i.toString();
         }
    }
    
function ClearAllSign()
    {
         
if(confirm('确定要清空所有上传的文件吗?')){
          
var signFrame = findObj("SignFrame",document);
          
var rowscount = signFrame.rows.length;
          
for(i=rowscount - 1;i > 0; i--){
           signFrame.deleteRow(i);
          }
          
var txtTRLastIndex = findObj("txtTRLastIndex",document);
          txtTRLastIndex.value 
= "1";
          TempCount
=1;
          AddSignRow();
         }
    }
//-->
</script>

 后台代码: 

 protected void btnInsert_Click(object sender, EventArgs e)
    {
         HttpFileCollection files 
= HttpContext.Current.Request.Files;
        
for (int iFile = 1; iFile  < = Request .Files.Count; iFile++)
        {    
///'检查文件扩展名字
            HttpPostedFile postedFile  = files[iFile  - 1];
            
if (postedFile ! = null  && postedFile.ContentLength  >  0)
            {
                
//UploadFile
            }
        }
    }
 
posted @ 2008-07-23 11:58  邀月  阅读(3315)  评论(4编辑  收藏  举报