找不到可安装的ISAM访问权限

Question

string path = System.IO.Path.GetFullPath(excelFileName);
string query = @"SELECT * FROM [" + textBox2.Text + "$]";
OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + ofd.FileName + ";Extended Properties= \"Excel 12.0 Xml;HDR=YES;IMEX=1\";";
OleDbDataAdapter adapter = new OleDbDataAdapter(query, conn);
DataSet dataSet = new DataSet();
adapter.Fill(dataSet);
DataTable dtExcel = new DataTable();
adapter.Fill(dtExcel);
//string strcon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\\DB.accdb;Persist Security Info=False;";
string strcon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\\DB.accdb;Persist Security Info=False;";Security=True;Connect Timeout=30;MultipleActiveResultSets=True;User Instance=True";
OleDbConnection conexao = new OleDbConnection(strcon);
conexao.Open();
...snip

conexao.Open（），给出了我试图修复所有表格的错误，所以我来这里寻求你的帮助我非常感谢那些帮助我的人