在上传按钮的事件里:
//文件上传
protected void btn_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)//判断是否存在文件
{
string FilePath = Server.MapPath("/Images/");//获取图像存的路径
string Extension = Path.GetExtension(FileUpload1.PostedFile.FileName);//获取文件的类型
if (Extension == ".jpg" || Extension == ".png" || Extension == ".jif")//判断格式 {
string NewFilePath = DateTime.Now.ToString("yyyyMMddHHmmss") + Extension;//重命名图片
FileUpload1.SaveAs(FilePath + NewFilePath);//图片存到对应路径
string ImgPath = "../Images/" + NewFilePath;
//Image1.ImageUrl = "../Images/" + FileUpload1.FileName;
Image1.ImageUrl = ImgPath;//图片显示
return;
}
else
{
this.Page.ClientScript.RegisterStartupScript(Page.GetType(), "提示!", "<script>alert('请选择图片格式!')</script>");
}
}
}