winform项目导入数据

一、点击导入按钮，弹出文件选择框

这个方法的使用要引用下面两个命名空间：

using System.Windows.Forms;
using DevExpress.XtraEditors;

 private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Title = "选择文件";
            ofd.Filter = "Microsoft Excel文件|*.xls;*.xlsx";
            ofd.FilterIndex = 1;
            ofd.DefaultExt = "xls";
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                if (!ofd.SafeFileName.EndsWith(".xls") && !ofd.SafeFileName.EndsWith(".xlsx"))
                {
                    XtraMessageBox.Show("请选择Excel文件","文件解析失败!",MessageBoxButtons.OK,MessageBoxIcon.Error);
                    return;
                }
                if (!ofd.CheckFileExists)
                {
                    XtraMessageBox.Show("指定的文件不存在","请检查！",MessageBoxButtons.OK,MessageBoxIcon.Error);
                    return;
                }
                //DataTable dt = NpoiOperExcel.ExcelToDataTable(ofd.FileName,true);
                DataSet ds = NpoiOperExcel.DsExcel(ofd.FileName);
            }
        }

21行使用的方法，读取excel表格

public static DataSet DsExcel(string filePath)
        {
            string str = "Provider = Microsoft.Jet.OLEDB.4.0; Data Source = " + filePath + ";Extended Properties="Excel 8.0;HDR=Yes;IMEX=1"";//智能读取2003版本
            OleDbConnection con = new OleDbConnection(str);
            try
            {
                con.Open(); 
                DataTable dt = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                string tablename = "", sql = "";
                w_import_select_table wi = new w_import_select_table();//创建的一个窗体，用于选择工作表格
                wi.dt = dt;
                if (wi.ShowDialog() != DialogResult.Yes)
                {
                    return null;
                }
                tablename = wi.listBox1.Text.Trim();
                sql = "select * from [" + tablename + "]";
                OleDbDataAdapter da = new OleDbDataAdapter(sql, con);
                DataSet ds = new DataSet();
                da.Fill(ds, tablename);
                return ds;
            }
            catch (Exception ex)
            {
                XtraMessageBox.Show(ex.ToString());
                return null;
            }
            finally
            {
                if (con.State == ConnectionState.Open)
                {
                    con.Close();
                }
            }
        }

下面就是把table传到数据库，使用表类型接收