使用 C# 中的 OLEDB 连接读取 Excel 文件

Question

I am trying to read a excel file and put data into a datatable in C#.When I try with Excel 97-2003 file format (.xls ) it is working fine.But when I try with Excel workbook format (.xlsx ) it is收到如下错误，

“外部表不是预期的格式。”

这是我的代码段。

string file_name = null;

OpenFileDialog file_d = new OpenFileDialog();
file_d.Filter = "Excel Files (*.xlsx)|*.xlsx|Excel Files (*.xls)|*.xls";
file_d.Title = "Select Attendance Record";

if (file_d.ShowDialog() == DialogResult.OK)
{
    file_name = file_d.FileName;
}

String ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + file_name + ";Extended Properties=Excel 8.0;";

try
{
    System.Data.OleDb.OleDbConnection MyConnection;
    System.Data.DataSet DtSet;
    System.Data.OleDb.OleDbDataAdapter MyCommand;

    MyConnection = new System.Data.OleDb.OleDbConnection(ConnectionString);
    MyCommand = new System.Data.OleDb.OleDbDataAdapter("select * from [Sheet1$]", MyConnection);
    MyCommand.TableMappings.Add("Table", "TestTable");
    DtSet = new System.Data.DataSet();
    MyCommand.Fill(DtSet);
    dataGridView1.DataSource = DtSet.Tables[0];
    MyConnection.Close();
}
catch (Exception ex)
{
    MessageBox.Show(ex.ToString());
}

请帮助我解决错误。在此先感谢。

Answer 1

自Office 2007起，“。xlsx”和其他Office文件均为XML格式。 您可以使用OpenXML对其进行读取或写入。

Answer 2

试试这个连接字符串

String ConnectionString = $"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={filePath};Extended Properties=\"Excel 12.0;HDR=YES;\"";

这个对我有用。