C#新建打开文件对话框

这是Winform直接封装好的打开文件对话框 

using System.Windows.Forms;
public static string OpenFile(string path)
{OpenFileDialog openFileDialog = new OpenFileDialog();// 设置对话框属性openFileDialog.Title = "选择文件";openFileDialog.InitialDirectory = path; // 设置初始目录openFileDialog.Filter = "TXT 文件|*.txt|所有文件|*.*"; //过滤器类型openFileDialog.FilterIndex = 1; // 默认选择第一个过滤器openFileDialog.RestoreDirectory = true; // 对话框关闭后恢复当前目录openFileDialog.CheckFileExists = false;  // 允许文件不存在openFileDialog.CheckPathExists = true;   // 但路径必须存在if (openFileDialog.ShowDialog() == DialogResult.OK){return   openFileDialog.FileName;}return "";
}