自写的上传自定义控件
控件类文件：
======================================================================================
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Collections;
using System.Collections.Specialized;
namespace PublicControls
{
///<summary>
/// UpLoadFile 的摘要说明。
///</summary>
[DefaultProperty("Text"),
ToolboxData("<PublicControls:UpLoadFile runat=server></PublicControls:UpLoadFile>")]
public class UpLoadFile : System.Web.UI.WebControls.WebControl,IPostBackDataHandler,IPostBackEventHandler
{
#region预定义
private string _url;
private string _type;
private string _uploadpagepath;
private string _uploadsavepath;
private string js;
///<summary>
///委托页面索引事件
///</summary>
public event EventHandler UrlChanged;
#endregion
#region属性
///<summary>
///关联的文件的Url地址
///</summary>
public string Url
{
get
{
if ((string)(ViewState["Url"]+"")!="")
{
_url = (string)ViewState["Url"];
}
return _url;
}
set
{
_url = value;
ViewState["Url"] = _url;
}
}
///<summary>
///上传类型,all为所有类型，自定义使用‘，’分割开，如：“jpg,gif,jpeg,png”
///</summary>
public string Type
{
get
{
if ((string)(ViewState["Type"]+"")!="")
{
_type = (string)ViewState["Type"];
}
else
{
_type = "all";
}
return _type;
}
set
{
_type = value;
ViewState["Type"] = _type;
}
}
///<summary>
///上传模态文件地址
///</summary>
public string UpLoadPagePath
{
get
{
if ((string)(ViewState["UpLoadPagePath"]+"")!="")
{
_uploadpagepath = (string)ViewState["UpLoadPagePath"];
}
else
{
_uploadpagepath = "UploadControl.aspx";
}
return _uploadpagepath;
}
set
{
_uploadpagepath = value;
ViewState["UpLoadPagePath"] = _uploadpagepath;
}
}
///<summary>
///上传的文件保存地址
///</summary>
public string UpLoadSavePath
{
get
{
if ((string)(ViewState["UpLoadSavePath"]+"")!="")
{
_uploadsavepath = (string)ViewState["UpLoadSavePath"];
}
else
{
_uploadsavepath = "Upload";
}
return _uploadsavepath;
}
set
{
_uploadsavepath = value;
}
}
#endregion
#region事件
///<summary>
///获取回发的数据
///</summary>
///<param name="postDataKey"></param>
///<param name="values"></param>
///<returns></returns>
public bool LoadPostData(String postDataKey, NameValueCollection values)
{
if(Url != values[this.UniqueID])
{
Url = values[this.UniqueID];
return true;
}
else
{
return false;
}
}
///<summary>
///数据回发事件
///</summary>
public void RaisePostDataChangedEvent()
{
OnUrlChanged(System.EventArgs.Empty);
}
///<summary>
///回送事件
///</summary>
///<param name="e"></param>
public void RaisePostBackEvent(string e)
{
}
///<summary>
///输出预处理
///</summary>
///<param name="e"></param>
protected override void OnPreRender(EventArgs e)
{
js = "";
js += "<script>";
js += "function OpenModal(){";
js += "var k = window.showModalDialog('"+UpLoadPagePath+"?type="+Type+"&savepath="+UpLoadSavePath+"','','dialogHeight:120px;status:no');";
js += "if(k!=null)";
js += "{ document.all."+this.UniqueID+".value = k;}";
js += "}";
js += "</script>";
}
///<summary>
///引发事件方法
///</summary>
///<param name="e"></param>
protected void OnUrlChanged(EventArgs e)
{
if(UrlChanged!=null)
{
UrlChanged(this,e);
}
}
#endregion
#region输出
///<summary>
///将此控件呈现给指定的输出参数。
///</summary>
///<param name="output">要写出到的 HTML 编写器 </param>
protected override void Render(HtmlTextWriter output)
{
string outputstring = "";
outputstring += js;
outputstring += "<input name = "+this.UniqueID+" type = 'text' value = '"+this.Url+"'>";
outputstring += "<input type = 'button' value='上传' onclick='OpenModal()'>";
output.Write(outputstring);
}
#endregion
}
}
模态加载文件：
====================================================================================
<%@ Page language="c#" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>UpLoadControl</title>
<script language="C#" runat="server">
private void Page_Load(object sender, System.EventArgs e)
{
if(!Page.IsPostBack)
{
string type = Request.QueryString["type"];
if (type=="all")
{
er.ValidationExpression = ".*";
}
else
{
string[] types;
types = type.Split(',');
string typestr = "";
for(int i = 0;i<types.Length;i++)
{
typestr += "//."+types[i];
if(i<types.Length-1)
{
typestr += "|";
}
}
er.ValidationExpression = ".*("+typestr+")";
}
}
}
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>UpLoadControl</title>
<script language="C#" runat="server">
private void Page_Load(object sender, System.EventArgs e)
{
if(!Page.IsPostBack)
{
string type = Request.QueryString["type"];
if (type=="all")
{
er.ValidationExpression = ".*";
}
else
{
string[] types;
types = type.Split(',');
string typestr = "";
for(int i = 0;i<types.Length;i++)
{
typestr += "//."+types[i];
if(i<types.Length-1)
{
typestr += "|";
}
}
er.ValidationExpression = ".*("+typestr+")";
}
}
}
private void btnClick(object sender,System.EventArgs e)
{
Page.Validate();
if(Page.IsValid)
{
string savepath = Request.QueryString["savepath"];
string url=savepath+"/"+ UpLoad(savepath);
Response.Write("<script>window.returnValue = '"+url+"'</");
Response.Write("script>");
Response.Write("<script>window.close()</");
Response.Write("script>");
}
}
{
Page.Validate();
if(Page.IsValid)
{
string savepath = Request.QueryString["savepath"];
string url=savepath+"/"+ UpLoad(savepath);
Response.Write("<script>window.returnValue = '"+url+"'</");
Response.Write("script>");
Response.Write("<script>window.close()</");
Response.Write("script>");
}
}
string UpLoad(string Path)
{
string msg = null;
if(UpfileBox.PostedFile.ContentLength>0)
{
try
{
Path = Server.MapPath(Path)+"/";
string fileName = DateTime.Now.ToString("yyyMMddhhmmss")+DateTime.Now.Millisecond.ToString(); //生成时间文件名
string fileSub = UpfileBox.PostedFile.FileName; //获得上传文件路径和文件名
int i = fileSub.Split('.').Length; //以‘.’为分割，分割文件本地路径
fileSub = "."+fileSub.Split('.')[i-1].ToString(); //最后一个‘.’以后的部分作为文件的后缀
UpfileBox.PostedFile.SaveAs(Path+fileName+fileSub); //保存文件
msg = fileName+fileSub; //将文件名赋予msg变量准备返回
}
catch
{
msg = "";
}
finally
{
}
}
else
{
msg = "";
}
UpfileBox.Dispose();
return msg;
}
</script>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
<base target="_self">
</HEAD>
<body>
<form id="Form1" method="post" encType="multipart/form-data" runat="server">
<P align="center"><BR>
<INPUT id="UpfileBox" type="file" name="File1" runat="server">
<asp:button id="btn" onclick="btnClick" runat="server" Text="上传"></asp:button><asp:regularexpressionvalidator id="er" runat="server" ValidationExpression=".*" Display="Dynamic" ControlToValidate="UpfileBox"
ErrorMessage="上传的文件错误"></asp:regularexpressionvalidator></P>
</form>
</body>
</HTML>
{
string msg = null;
if(UpfileBox.PostedFile.ContentLength>0)
{
try
{
Path = Server.MapPath(Path)+"/";
string fileName = DateTime.Now.ToString("yyyMMddhhmmss")+DateTime.Now.Millisecond.ToString(); //生成时间文件名
string fileSub = UpfileBox.PostedFile.FileName; //获得上传文件路径和文件名
int i = fileSub.Split('.').Length; //以‘.’为分割，分割文件本地路径
fileSub = "."+fileSub.Split('.')[i-1].ToString(); //最后一个‘.’以后的部分作为文件的后缀
UpfileBox.PostedFile.SaveAs(Path+fileName+fileSub); //保存文件
msg = fileName+fileSub; //将文件名赋予msg变量准备返回
}
catch
{
msg = "";
}
finally
{
}
}
else
{
msg = "";
}
UpfileBox.Dispose();
return msg;
}
</script>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
<base target="_self">
</HEAD>
<body>
<form id="Form1" method="post" encType="multipart/form-data" runat="server">
<P align="center"><BR>
<INPUT id="UpfileBox" type="file" name="File1" runat="server">
<asp:button id="btn" onclick="btnClick" runat="server" Text="上传"></asp:button><asp:regularexpressionvalidator id="er" runat="server" ValidationExpression=".*" Display="Dynamic" ControlToValidate="UpfileBox"
ErrorMessage="上传的文件错误"></asp:regularexpressionvalidator></P>
</form>
</body>
</HTML>
