打开和保存文件

打开文件：

            Microsoft.Win32.OpenFileDialog open = new Microsoft.Win32.OpenFileDialog();
            open.Multiselect = false;
            open.Filter = "表格(*.CSV)|*.CSV";
            Nullable<bool> flag = open.ShowDialog();
            if (flag == true)
            {
                string filename = open.FileName;
            }

 

保存文件：

            Microsoft.Win32.SaveFileDialog save = new Microsoft.Win32.SaveFileDialog();
            save.Filter = "表格(*.CSV)|*.CSV";
            Nullable<bool> flag = save.ShowDialog();
            if (flag == true)
            {
                string filename = save.FileName;
            }