Sisony的专栏

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data ;using System.Data.OleDb

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;  namespace

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace TreeView{    public partial

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace TestTreeView{    public partia

用OLEDB进行Excel文件数据的读取，并返回DataSet数据集。其中有几点需要注意的：1.连接字符串中参数IMEX 的值： 0 is Export mode 1 is Import mode 2 is Linked mode (full update capabilities)IMEX有3个值：当IMEX=2 时，EXCEL文档中同时含有字符型和数字型时，比如第C列有3个值，2个

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace TestFile{    public partial cl