/// <summary>
/// 准备数据源用于表格显示，主要功能：自动生成显示图标。
/// </summary>
public void DoPrepareDataSource()
{
if (_attachmentStorage == null)
{
return;
}
//临时显示字段
if (_attachmentStorage.Columns.IndexOf(tb_sys_AttachFile.IconLarge) < 0)
{
_attachmentStorage.Columns.Add(tb_sys_AttachFile.IconLarge, typeof(byte[]));
}
if (_attachmentStorage.Columns.IndexOf(tb_sys_AttachFile.IconSmall) < 0)
{
_attachmentStorage.Columns.Add(tb_sys_AttachFile.IconSmall, typeof(byte[]));
}
Icon large;
Icon small;
foreach (DataRow R in _attachmentStorage.Rows)
{
if (R.RowState == DataRowState.Deleted)
{
continue;
}
if (R[tb_sys_AttachFile.IconSmall] != DBNull.Value)
{
continue;
}
AttachTool.CreateFileIcon(R, out large, out small, true); //创建图标,用于表格显示
}
}
/// <summary>
/// 获取文件的ICO图标
/// </summary>
/// <param name="fileType">文件类型(*.exe,*.dll)</param>
/// <param name="large">大图标</param>
/// <param name="small">返回小图标</param>
public static void CreateFileIcon(string fileType, out Icon large, out Icon small)
{
string des;
if (fileType.Trim() == "") //预设图标
{
AttachTool.GetDefaultIcon(out large, out small);
}
else if (fileType.ToUpper() == ".EXE") //应用程序图标单独获取
{
IntPtr l = IntPtr.Zero;
IntPtr s = IntPtr.Zero;
AttachTool.ExtractIconExW(Path.Combine(Environment.SystemDirectory, "shell32.dll"), 2, ref l, ref s, 1);
large = Icon.FromHandle(l);
small = Icon.FromHandle(s);
}
else //其它类型的图标
{
AttachTool.GetExtsIconAndDescription(fileType, out large, out small, out des);
}
if ((large == null) || (small == null)) //无法获取图标,预设图标
{
AttachTool.GetDefaultIcon(out large, out small);
}
}
public void AddFile(string fileFullName)
{
FileStream fs = null;
try
{
string ext = Path.GetExtension(fileFullName); //扩展名
string fileName = Path.GetFileName(fileFullName); //显示文件名称
fs = new FileStream(fileFullName, FileMode.Open);
byte[] bs = new byte[fs.Length]; //文件内容
fs.Read(bs, 0, (int)fs.Length); //读取文件内容
decimal size = decimal.Round((decimal)(fs.Length / 1024.00), 2); //文件大小 kb
fs.Close();
//显示文件的图标
Icon large;
Icon small;
AttachTool.CreateFileIcon(ext, out large, out small); //获取文件的图标
TAttachFile file = new TAttachFile(); //附件对象
file.FileName = fileName;
file.FileTitle = fileName; //文件标题
file.FileType = ext; ////扩展名
file.FileSize = size;
file.FileBody = bs;
file.IconLarge = AttachTool.ImageToByte(large.ToBitmap()); //大图标
file.IconSmall = AttachTool.ImageToByte(small.ToBitmap()); //小图标
this.AddFile(file); //保存数据
}
catch
{
if (fs != null)
{
fs.Close();
}
}
}