摘要：
DataTable dt = new DataTable("Datas"); DataColumn dc = null; //dt新增列 dc=dt.Columns.Add("id", Type.GetType("System.Int32")); //课件id dc = dt.Columns.Add 阅读全文
摘要：
private List<string> FindFile(string Path) { List<string> list=new List<string>(); DirectoryInfo di = new DirectoryInfo(@"C:\Users\Administrator\Deskt 阅读全文