代碼如下：

            DataTable dt = new DataTable();
            DataColumn dc1 = new DataColumn("Id", typeof(string));
            DataColumn dc2 = new DataColumn("Name", typeof(string));
            dt.Columns.Add(dc1);
            dt.Columns.Add(dc2);
            DataRow dr = dt.NewRow();
            dr[
 
"Id"] = "1004125120";
            dr["Name"] = "丁鵬";
            dt.Rows.Add(dr);
            DataRow dr2 = dt.NewRow();
            dr2["Id"] = "1004125121";
            dr2["Name"] = "張樂";
            dt.Rows.Add(dr2);

            // 1. 類似sql的Where後面跟的條件的查詢語句 like、in 也可以
            DataRow[] drs = dt.Select("
 
Name = ‘張樂‘ and Id in (‘1004125121‘,‘1004125120‘)");//返回DataRow[]

            // 2. 位DT設置主鍵，Find(主鍵值)查詢
            //PrimaryKey是DT的一個屬性 類型是DataColumn[]
            dt.PrimaryKey = new DataColumn[] { dt.Columns["Id"] };
            DataRow drSelect = dt.Rows.Find("1004125120");//返回DataRow

DataTable查詢出DataRow數據