fileupload控件简单例子
//该方法是按钮单击事件，完成上传文件到服务器
private void btnUpload_Click(object sender, System.EventArgs e)
{
if(fileUpload1.PostedFile!=null && fileUpload1.PostedFile.FileName!="" && fileUpload1.PostedFile.ContentLength!=0)
{
if(fileUpload1.PostedFile.ContentLength > 5 * 1024 )
{
lblError.Text = "上传文件过大";
lblError.Visible = true;
return;
}
string sFileName = Path.GetExtension(fileUpload1.PostedFile.FileName).ToUpper();
if(! (strFileName == ".BMP" || strFileName == ".GIF" || strFileName == ".JPG") )
{
lblError.Text = "文件格式不正确";
lblError.Visible = true;
return;
}
Random ran = new Random();
string sNewImg = DateTime.Now.ToString(@"yyyyMMddHHmmss") + ran.Next(100,999) + Path.GetExtension(fileUpload1.PostedFile.FileName) ;
string sPath = Server.MapPath( "~/Picture/" + sNewImg);
if( !Directory.Exists(Path.GetDirectoryName(sPath) ) )
{
Directory.CreateDirectory(Path.GetDirectoryName(strPath));
}
fileUpload1.PostedFile.SaveAs(sPath);
}
}
