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 = ;
             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