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【Asp.Net】 asp.net上传判断文件类型

作者:Dezai.CN / 发布于2012/6/5/ 646

上传判断文件类型

<div>
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;
using System.IO;
public partial class Manage_Control_Upload_Images :  System.Web.UI.UserControl
{
public string ImageUrl
{
get { return Image1.ImageUrl; }
set { Image1.ImageUrl = value;  }
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Upload_Click1(object sender, EventArgs e)
{
if (FileUpload1.PostedFile.FileName != "")
{
if (FileUpload1.PostedFile.ContentLength < 1024 *  1024)
{
string filename =  DateTime.Now.ToString("yyyymmddhhmmss");
string year =  DateTime.Now.Year.ToString();
string month =  DateTime.Now.Month.ToString();
if  (FileUpload1.PostedFile.ContentType == "image/pjpeg")
{
if (Directory.Exists(Server.MapPath(@"~/Upfiles/" +  year + "/" + month + "/")))
{
FileUpload1.PostedFile.SaveAs(Server.MapPath(@"~/Upfiles/" + year + "/" + month  + "/" + filename + ".jpg"));
Image1.ImageUrl =  @"~/Upfiles/" + year + "/" + month + "/" + filename +  ".jpg";
}
else
{
Directory.CreateDirectory(Server.MapPath(@"~/Upfiles/" + year + "/" + month +  "/"));
FileUpload1.PostedFile.SaveAs(Server.MapPath(@"~/Upfiles/" + year + "/" + month  + "/" + filename + ".jpg"));
Image1.ImageUrl =  @"~/Upfiles/" + year + "/" + month + "/" + filename +  ".jpg";
}
}
else if  (FileUpload1.PostedFile.ContentType == "image/gif")
{
if (Directory.Exists(Server.MapPath(@"~/Upfiles/" +  year + "/" + month + "/")))
{
FileUpload1.PostedFile.SaveAs(Server.MapPath(@"~/Upfiles/" + year + "/" + month  + "/" + filename + ".gif"));
Image1.ImageUrl =  @"~/Upfiles/" + year + "/" + month + "/" + filename +  ".gif";
}
else
{
Directory.CreateDirectory(Server.MapPath(@"~/Upfiles/" + year + "/" + month +  "/"));
FileUpload1.PostedFile.SaveAs(Server.MapPath(@"~/Upfiles/" + year + "/" + month  + "/" + filename + ".gif"));
Image1.ImageUrl =  @"~/Upfiles/" + year + "/" + month + "/" + filename +  ".gif";
}
}
else
{
error.Text =  "您上传的文件格式不正确！";
}
}
else
{
error.Text =  "上传的文件不能超过1M！";
}
}
else
{
error.Text = "您未上传任何文件！";
}
}
}

</div>

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　上传判断文件类型　

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