C# winform OpenFileDialog实例

OpenFileDialog fileDialog = new OpenFileDialog();
            //筛选
             fileDialog.Filter = "Word Documents|*.docx" +
                                         "|Excel Worksheets|*.xlsx" +
                                         "|PowerPoint Presentations|*.pptx" +
                                         "|Office Files|*.docx;*.xlsx;*.pptx" +
                                         "|All Files|*.*";
            if (fileDialog.ShowDialog().Equals(DialogResult.OK))
            {
                //显示选择文件
                MessageBox.Show(fileDialog.FileName);
            }