winform打开Excel读取数据并显示到datagridview中



[c-sharp] view plain copy print ?

///
      /// 选择相应的Excel文件
      ///
      ///
      ///
      private void btn1_Click(object sender, EventArgs e)
      {
         try
         {
            //获取Excel文件路径和名称
            OpenFileDialog odXls = new OpenFileDialog();
            // 指定相应的打开文档的目录
            odXls.InitialDirectory = "C://";
            // 设置文件格式
            odXls.Filter = "Excel files (*.xls)|*.xls";
            odXls.FilterIndex = 2;
            odXls.RestoreDirectory = true;
            if (odXls.ShowDialog() == DialogResult.OK)
            {
               txtFilePath.Text = odXls.FileName;
               OleDbConnection oledbConn = null;
               string sConnString = "provider=Microsoft.Jet.OLEDB.4.0;data source=" + odXls.FileName + ";Extended Properties=Excel 5.0;Persist Security Info=False";
               oledbConn = new OleDbConnection(sConnString);
               oledbConn.Open();
               DataTable dt = oledbConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
               combox1.Items.Clear();
               foreach (DataRow dr in dt.Rows)
               {
                  combox1.Items.Add((String)dr["TABLE_NAME"]);
               }
               if (combox1.Items.Count > 0)
                  combox1.SelectedIndex = 0;
            }
         }
         catch (Exception Ex)
         {
            MessageProcess.ShowError(Ex.Message);
         }
      }
      ///
      ///  读取相应的表名的Excel文件中数据到当前DataGridview中显示
      ///
      ///
      ///
      private void btn2_Click(object sender, EventArgs e)
      {
         OleDbConnection ole = null;
         OleDbDataAdapter da = null;
         DataTable dt = null;
         string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;"
                          + "Data Source=" + txtFilePath.Text.Trim() + ";"
                          + "Extended Properties=Excel 5.0";
         string sTableName = combox1.Text.Trim();
         string strExcel = "select * from [" + sTableName + "]";
         try
         {
            ole = new OleDbConnection(strConn);
            ole.Open();
            da = new OleDbDataAdapter(strExcel, ole);
            dt = new DataTable();
            da.Fill(dt);
            this.xlsExpData.DataSource = dt;
            for (int i = 0; i < dt.Columns.Count; i++)
            {
               xlsExpData.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
            }
            ole.Close();
         }
         catch (Exception Ex)
         {
            MessageBox.Show(Ex.Message);
         }
         finally
         {
            if (ole != null)
               ole.Close();
         }
      }