private void btnUploadPicture_Click(object sender, System.EventArgs e) { //检查上传文件的格式是否有效 if(this.UploadFile.PostedFile.ContentType.ToLower().IndexOf("image") < 0) { Response.Write("上传图片格式无效！"); return; } //生成原图 Byte[] oFileByte = new byte[this.UploadFile.PostedFile.ContentLength]; System.IO.Stream oStream = this.UploadFile.PostedFile.InputStream; System.Drawing.Image oImage = System.Drawing.Image.fromStream(oStream); int oWidth = oImage.Width; //原图宽度 int oHeight = oImage.Height; //原图高度 int tWidth = 100; //设置缩略图初始宽度 int tHeight = 100; //设置缩略图初始高度 //按比例计算出缩略图的宽度和高度 if(oWidth >= oHeight) { tHeight = (int)Math.Floor(Convert.ToDouble(oHeight) * (Convert.ToDouble(tWidth) / Convert.ToDouble(oWidth))); } else { tWidth = (int)Math.Floor(Convert.ToDouble(oWidth) * (Convert.ToDouble(tHeight) / Convert.ToDouble(oHeight))); } //生成缩略原图 Bitmap tImage = new Bitmap(tWidth,tHeight); Graphics g = Graphics.fromImage(tImage); g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; //设置高质量插值法 g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //设置高质量,低速度呈现平滑程度 g.Clear(Color.Transparent); //清空画布并以透明背景色填充 g.DrawImage(oImage,new Rectangle(0,0,tWidth,tHeight), new Rectangle(0,0,oWidth,oHeight),GraphicsUnit.Pixel); string oFullName = Server.MapPath(".") + "/" + "o" + DateTime.Now.ToShortDateString().Replace("-","") + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString() + ".jpg"; //保存原图的物理路径 string tFullName = Server.MapPath(".") + "/" + "t" + DateTime.Now.ToShortDateString().Replace("-","") + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString() + ".jpg"; //保存缩略图的物理路径 try { //以JPG格式保存图片 oImage.Save(oFullName,System.Drawing.Imaging.ImageFormat.Jpeg); tImage.Save(tFul
Asp.net网站发布到IIS上，操作文件的时候发生‘System.UnauthorizedAccessException:对路径“***”的访问被拒绝’。
说明没有授予Asp.net对文件的写访问权，网上找了一下:
若要授予 ASP.NET 对文件的写访问权，请在资源管理器中右击该文件，选择“属性”，然后选择“安全”选项� ......
using System;
using System.Collections.Generic;
using System.Text;
namespace Common
{
/// <summary>
/// 转换人民币大小金额。
/// </summary>
public class Rmb
{
/// <summary>
/// 转换人民币大小金额
/// </summary>
/// <param name="num">金额</ ......
asp.net字符串截取实现代码，需要的朋友可以参考下。
1，把代码放在sqlhelper中。
复制代码 代码如下:
#region 截取字符串
/// <summary>
/// 截取字符串
/// </summary>
/// <param name="str_value"></param>
/// <param name="str_len"></param>
/// <returns&g ......
