asp.net2.0实现文件上传,控制上传文件大小,类型

protected void Button1_Click(object sender, EventArgs e)

{

if (FileUpload1.HasFile)

{

Label2.Text = FileUpload1.FileName;

Label3.Text = FileUpload1.PostedFile.ContentLength.ToString() + "字节";

Label4.Text = FileUpload1.PostedFile.FileName;

//获得扩展名

string extension = System.IO.Path.GetExtension(FileUpload1.FileName);

if (extension == ".rar" || extension == ".doc" || extension == ".xls")

{

if (FileUpload1.PostedFile.ContentLength < 10000000)//文件小于10M

{

FileUpload1.SaveAs(Server.MapPath("~/upLoad/" + FileUpload1.FileName));

Label1.Text = "恭喜你，上传成功!";

}

else

{

Label1.Text = "上传失败，不是管理员，上传文件不能大于10M！";

}

}

else

Label1.Text = "上传失败，只能上传扩展名是rar、doc、xls的文件！";

}

else

{

Label1.Text = "上传失败，或没指定正确的文件!";

}

}