希望這段程式碼可以幫到有需求的人！！！

          DataTable dt = new DataTable();
            Hashtable ht = New Hashtalbe()

                           ht["a"]="aa";

                           ht["b"]="ab";

                           ht["c"]="ac";

            foreach (DictionaryEntry e in ht)
            {
                dt.Columns.Add(e.Key.ToString(), Type.GetType("System.String"));
            }

///上面這段程式碼是產生表的列；

///下面的程式碼是向行中新增具體的資料

///這樣寫可能會清楚一點

            DataRow dr = dt.NewRow();
                foreach (DictionaryEntry e in ht)
                {
                    dr[e.Key.ToString()] = e.Value.ToString();
                }

                dt.Rows.Add(dr);