WPF桌面程序中怎么打开文件，打开文件夹，和保存文件
如题

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跟winform里面一样，都是调用.net类库里面的这些类
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用法一样的，LZ
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http://blog.csdn.net/johnsuna/archive/2007/08/30/1765822.aspx
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http://www.cnblogs.com/pdfw/archive/2009/03/26/1422178.html
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http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/f91ba9d2-a8b5-46be-a37c-81d60bdc4291/
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和WinForm差不多，就那几个类

打开文件

C# code

OpenFileDialog dlg; = new OpenFileDialog();            dlg.FileName = "图片";            dlg.DefaultExt = "*.*";            dlg.Filter = "全部文件(.*)|*.*|bmp文件(.bmp)|*.bmp|jpg文件(.jpg)|*.jpg|gif文件(.gif)|*.gif|png文件(.png)|*.png|ico文件(.ico)|*.ico";            Nullable<bool> result = dlg.ShowDialog();            if (result == true)            {                filePath.Text = "图片路径：" + dlg.FileName;                sort.IsEnabled = true;            }
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一样操作
WPF 控件
按钮：Button 和 RepeatButton。
对话框：OpenFileDialog、PrintDialog 和 SaveFileDialog。
参考
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这是我最近做的，传输文件的时候，先打开窗口
C# code
        private void btnSendFile_Click(object sender, EventArgs e)        {            OpenFileDialog ofd = new OpenFileDialog();                        if (ofd.ShowDialog() == DialogResult.OK)            {                txtMessage.Text = ofd.FileName;                fullfilename = ofd.FileName;                filename = fullfilename.Substring(fullfilename.LastIndexOf("\\") + 1);                FileStream filestreamlength = new FileStream(fullfilename, FileMode.Open, FileAccess.Read);                string sendMessageFile = "receivefile|" + filename + "|" + filestreamlength.Length.ToString() + "|";                byte[] byteFile=new byte[1024];                byteFile = Encoding.Unicode.GetBytes(sendMessageFile);                clientSocket.BeginSendTo(byteFile, 0, byteFile.Length,                     SocketFlags.None, epServer, new AsyncCallback(OnSend), null);                filestreamlength.Close();                txtMessage.Text = string.Empty;            }        }
[解决办法]
项目中选择"引用"
找到:system.windows.forms即可.