C＃DataTable更新訪問數據庫

Question

如何將DataTable保存到文件中。 accdb（Access）現有的一個？我用下面的代碼，它不工作：

using (OleDbConnection oledbConnection = new OleDbConnection(connection)) 
{ 
    oledbConnection.Open(); 
    string query = "SELECT * FROM Student"; 
    using (OleDbCommand oledbCommand = new OleDbCommand(query, oledbConnection)) 
    { 
     using (OleDbDataAdapter oledbDataAdapter = new OleDbDataAdapter(oledbCommand)) 
     { 
     using (OleDbCommandBuilder oledbCommandBuilder = new OleDbCommandBuilder(oledbDataAdapter)) 
     { 
      oledbDataAdapter.DeleteCommand = oledbCommandBuilder.GetDeleteCommand(true); 
      oledbDataAdapter.InsertCommand = oledbCommandBuilder.GetInsertCommand(true); 
      oledbDataAdapter.UpdateCommand = oledbCommandBuilder.GetUpdateCommand(true); 
      oledbDataAdapter.Update(dataTable); 
     } 
     } 
    } 
    oledbConnection.Close(); 
} 

變量數據表上初始化文件的原始內容，然後將其修改通過添加行，我現在有更新的表數據庫。

我嘗試使用下面的代碼，但是，這並不工作:(

OleDbDataAdapter da = new OleDbDataAdapter("SELECT * FROM Student", connection); 
OleDbCommandBuilder cmdBuilder = new OleDbCommandBuilder(da); 
da.InsertCommand = cmdBuilder.GetInsertCommand(true); 
// create and insert row in the DataTable 
da.Update(dataTable); 

Answer 1

假設你已經在數據表中的一些變化，那麼你可以通過生成的更新/插入/刪除命令到適配器以這種方式

oledbDataAdapter.DeleteCommand = oledbCommandBuilder.GetDeleteCommand(); 
oledbDataAdapter.InsertCommand = oledbCommandBuilder.GetInsertCommand(); 
oledbDataAdapter.UpdateCommand = oledbCommandBuilder.GetUpdateCommand(); 
oledbDataAdapter.Update(datatable); 

適配器現在知道如何如果發出`dataTable.GetChanges（更新表格