閱讀後關閉Excel文件

Question

這裏是我打開Excel文件和讀取數據的代碼，一切正常，但我想要關閉一旦Excel文件被讀取，我該怎麼做？我嘗試Dispose的對象，但沒有幫助。

public static DataTable ExcelWorkbook(string workbookName) 
     { 
      string connectionString = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 8.0;HDR=YES;IMEX=1;""", FILENAME); 
      string query = String.Format("select * from [{0}$]", workbookName); 

      OleDbDataAdapter dataAdapter = new OleDbDataAdapter(query, connectionString); 
      DataSet dataSet = new DataSet(); 
      dataAdapter.Fill(dataSet); 

      dataAdapter.Dispose(); 

      DataTable myTable = dataSet.Tables[0]; 
      if (myTable != null) 
       return myTable; 

      return null; 
     } 

Answer 1

你的代碼應該看起來像某事是：連接被關閉

OleDbConnection connection; 
OleDbDataAdapter clientsAdapter new OleDbDataAdapter(); 
DataSet myDataSet = new DataSet(); 

connectionString = (@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0}.xlsx;Extended Properties=""Excel 12.0 Xml;HDR=YES""",FILENAME); 
connection = new OleDbConnection(connectionString); 
connection.Open(); 

clientsAdapter.SelectCommand = new OleDbCommand("SELECT * FROM [{0}$]", connection); 

DataTable data = new DataTable("MyTable"); 
clientsAdapter.Fill(data); 
myDataSet.Tables.Add(data); 

connection.Close(); 

後，Excel文件將被解鎖。

Answer 2

您正在配置讀取數據的數據適配器，而不是對Excel文件本身的引用。

在代碼中的某處，您將打開工作簿。你需要調用

workbook.Close(); 

http://msdn.microsoft.com/en-us/library/microsoft.office.interop.excel.workbookclass.close(v=office.14).aspx