C# 读取Excel
直接添代码:
public void connExcel(string strPath) { //string strConn = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strPath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1';"; string strConn = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + strPath + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1';"; OleDbDataReader myDataReader = null; OleDbConnection myOleDbConnection = new OleDbConnection(strConn); OleDbCommand myOleDbCommand = new OleDbCommand("SELECT * FROM [Sheet1$]", myOleDbConnection); try { myOleDbConnection.Open(); myDataReader = myOleDbCommand.ExecuteReader(); while (myDataReader.Read()) { Console.WriteLine("序号:" + myDataReader.GetValue(0));//列1 Console.WriteLine("标题:" + myDataReader.GetValue(1));//列2 Console.WriteLine("预期结果:" + myDataReader.GetValue(2));//列3 } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } finally { // Always call Close when done reading. if (myDataReader != null) myDataReader.Close(); // Close the connection when done with it. if (myOleDbConnection != null) myOleDbConnection.Close(); } }
遇到问题:
1.open时,报“找不到可安裝的ISAM解決方法”
解决方法:'Excel 8.0;HDR=Yes;IMEX=1;'这个要用单引号引起来
2.报错:外部表不是预期的格式错误
错误原因1: 由于Excel 97-2003的连接格式与Excel 2010 的 不同造成。
解决方法:
//2003(Microsoft.Jet.Oledb.4.0)
string strConn = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'", excelFilePath);
//2007 , 2010(Microsoft.ACE.OLEDB.12.0)
string strConn = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 12.0;HDR=Yes;IMEX=1;'", excelFilePath);
3.Access有密碼設置時,當用C#連接Access Database時可能會出現"找不到可安裝的ISAM"。
解决方法:string dsn = "Provider=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:DataBase Password=123;Data Source=C:\\...\\*.mdb";