<asp:FileUpload>上传一张图片并且重命名
aspx
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Label ID="lblImg" runat="server" Text=""></asp:Label>
cs
using System.IO;
public void getDataa()
{
Boolean fileOK = false;
//获取上传的文件名
string fileName = this.FileUpload1.FileName;
//获取物理路径
String path = Server.MapPath("~/upload/");
//获取文件的类型
string Extension = Path.GetExtension(FileUpload1.PostedFile.FileName);
//判断上传控件是否上传文件
if (FileUpload1.HasFile)
{
//判断上传文件的扩展名是否为允许的扩展名".gif", ".png", ".jpeg", ".jpg" ,".bmp"
String fileExtension = Path.GetExtension(fileName).ToLower();
String[] Extensions = { ".gif", ".png", ".jpeg", ".jpg", ".bmp", ".JPG" };
for (int i = 0; i < Extensions.Length; i++)
{
if (fileExtension == Extensions[i])
{
fileOK = true;
}
}
}
//如果上传文件扩展名为允许的扩展名,则将文件保存在服务器上指定的目录中
if (fileOK)
{
try
{
string NewFilePath = DateTime.Now.ToString("yyyyMMddHHmmssffff") + Extension; //重命名图片,也可以用图片原有的名字
this.FileUpload1.PostedFile.SaveAs(path + NewFilePath);
//string ImgPath = "../upload/" + NewFilePath; //获取上传好的图片的路径
//将字符串存入数据库对应的字段即可
lblImg.Text = "../upload/" + NewFilePath;
}
catch (Exception ex)
{
Response.Write("<script> alert('文件不能上传,原因:" + ex.Message+"');window.location.href=window.location.href; </script> ");
}
}
else
{
Response.Write("<script> alert('不能上传这种类型的文件');window.location.href=window.location.href; </script> ");
}
}