使用OleDB读取C＃中的Excel文件？

我正在build立一个程序来读取excel文件到dataGridView中。

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Data; using System.Data.OleDb; namespace pro1._0 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { string sConnecStr = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=c:\\Copy_of_Acute_HCV_2008.xls" + ";" + "Extended Properties=Excel 8.0;"; OleDbConnection conObj = new OleDbConnection(sConnecStr); conObj.Open(); OleDbCommand sqlCommand = new OleDbCommand("SELECT * FROM [Sheet1$]",conObj); OleDbDataAdapter adaObj = new OleDbDataAdapter(); adaObj.SelectCommand = sqlCommand; DataSet setObj = new DataSet(); adaObj.Fill(setObj); conObj.Close(); dataGridView1.DataSource = setObj.Tables[0]; dataGridView1.Refresh(); } } } 

该程序运行良好，当我使用一个小的Excel文件，但是当我使用一个大的Excel文件，它给了我这个错误

在System.Data.dll中发生未处理的types“System.Data.OleDb.OleDbException”exception

附加信息：“Sheet1 $”不是有效的名称。 确保它不包含无效字符或标点符号，并且不会太长。

谢谢

编辑：我总是使用.xls文件不是.xlsx

Answer 1

 protected void btnUpload_Click(object sender, EventArgs e) { try { if ((txtFilePath.HasFile)) { OleDbConnection conn = new OleDbConnection(); OleDbCommand cmd = new OleDbCommand(); OleDbDataAdapter da = new OleDbDataAdapter(); DataSet ds = new DataSet(); string query = null; string connString = ""; string strFileName = DateTime.Now.ToString("ddMMyyyy_HHmmss"); string strFileType = System.IO.Path.GetExtension(txtFilePath.FileName).ToString().ToLower(); if (strFileType == ".xls" || strFileType == ".xlsx") { txtFilePath.SaveAs(Server.MapPath("~/UploadedExcel/" + strFileName + strFileType)); } string strNewPath = Server.MapPath("~/UploadedExcel/" + strFileName + strFileType); if (strFileType.Trim() == ".xls") { connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strNewPath + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\""; } else if (strFileType.Trim() == ".xlsx") { connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + strNewPath + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\""; } conn = new OleDbConnection(connString); if (conn.State == ConnectionState.Closed) conn.Open(); string SpreadSheetName = ""; DataTable ExcelSheets = conn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" }); SpreadSheetName = ExcelSheets.Rows[0]["TABLE_NAME"].ToString(); query = "SELECT * FROM [" + SpreadSheetName + "]"; cmd = new OleDbCommand(query, conn); da = new OleDbDataAdapter(cmd); ds = new DataSet(); da.Fill(ds, "tab1"); } } }