winform打开Excel读取数据并显示到datagridview中

/// <summary> /// 选择相应的Excel文件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> 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); } } /// <summary> /// 读取相应的表名的Excel文件中数据到当前DataGridview中显示 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> 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(); } }