asp中如何显示磁盘及文件图标
例如如下效果:不使用外部图片
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帮顶
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呵呵 不使用外部图片可以使用系统图标不..这个黑白的画出来太麻烦了.
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记得我也做过一个类似的东西，就是列出本机的文件，跟“我的电脑”中的是一样的，我当时是用图片（省事，省时），HTML的<img src = ""></img> LZ有别的办法的发分享下啊 --------------------编程问答--------------------
using System;
using System.Data;
using System.Collections.Generic;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using System.Data.SqlClient;
using System.Xml;
using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
System.IO.DriveInfo[] _DriveList = System.IO.DriveInfo.GetDrives();
int _SizeWidth = 80;
Bitmap _Bitmap = new Bitmap(_DriveList.Length * _SizeWidth, _SizeWidth);
Graphics _Graphcis = Graphics.FromImage(_Bitmap);
_Graphcis.Clear(Color.White);
for (int i = 0; i != _DriveList.Length; i++)
{
_Graphcis.DrawImage(GetFileIcon(_DriveList[i].Name).ToBitmap(), _SizeWidth * i + ((_SizeWidth - 32) / 2), 0);
StringFormat _Format = new StringFormat();
_Format.Alignment = StringAlignment.Center;
_Format.LineAlignment = StringAlignment.Center;
switch(_DriveList[i].DriveType)
{
case System.IO.DriveType.Fixed:
_Graphcis.DrawString("本地磁盘", new System.Drawing.Font("宋体", 10), Brushes.Black, new Rectangle(_SizeWidth * i, 32, _SizeWidth, _SizeWidth - 32), _Format);
break;
case System.IO.DriveType.CDRom:
_Graphcis.DrawString("CD 驱动器", new System.Drawing.Font("宋体", 10), Brushes.Black, new Rectangle(_SizeWidth * i, 32, _SizeWidth, _SizeWidth - 32), _Format);
break;
}
_Graphcis.DrawString(_DriveList[i].Name.Replace("\\", ""), new System.Drawing.Font("宋体", 10), Brushes.Black, new Rectangle(_SizeWidth * i, 52, _SizeWidth, _SizeWidth - 52), _Format);
}
_Graphcis.Dispose();
this.Response.Clear();
_Bitmap.Save(this.Response.OutputStream, ImageFormat.Jpeg);
_Bitmap.Dispose();
this.Response.End();
}
}
[StructLayout(LayoutKind.Sequential)]
public struct SHFILEINFO
{
public IntPtr hIcon;
public IntPtr iIcon;
public uint dwAttributes;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string szDisplayName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
public string szTypeName;
}
/// <summary>
/// 返回系统设置的图标
/// </summary>
/// <param name="pszPath">文件路径 如果为"" 返回文件夹的</param>
/// <param name="dwFileAttributes">0</param>
/// <param name="psfi">结构体</param>
/// <param name="cbSizeFileInfo">结构体大小</param>
/// <param name="uFlags">枚举类型</param>
/// <returns>-1失败</returns>
[DllImport("shell32.dll")]
public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbSizeFileInfo, uint uFlags);
public enum SHGFI
{
SHGFI_ICON = 0x100,
SHGFI_LARGEICON = 0x0,
SHGFI_USEFILEATTRIBUTES = 0x10
}
/// <summary>
/// 获取文件图标 zgke@sina.com qq:116149
/// </summary>
/// <param name="p_Path">文件全路径</param>
/// <returns>图标</returns>
public static Icon GetFileIcon(string p_Path)
{
SHFILEINFO _SHFILEINFO = new SHFILEINFO();
IntPtr _IconIntPtr = SHGetFileInfo(p_Path, 0, ref _SHFILEINFO, (uint)Marshal.SizeOf(_SHFILEINFO), (uint)(SHGFI.SHGFI_ICON | SHGFI.SHGFI_LARGEICON | SHGFI.SHGFI_USEFILEATTRIBUTES));
if (_IconIntPtr.Equals(IntPtr.Zero)) return null;
Icon _Icon = System.Drawing.Icon.FromHandle(_SHFILEINFO.hIcon);
return _Icon;
}
}
看看这个效果.
补充：.NET技术 , ASP.NET
