程序中的任何更改都不會影響數據庫

-3

問題是 - 程序運行時，我更改，添加和刪除datagrid中的數據。但是，當我重新啓動我的程序 - 它從數據庫加載所有數據沒有任何改變（只添加數據）。程序中的任何更改都不會影響數據庫

哪裏有問題？

public partial class StudentsTable : Window 
{ 
    public StudentsTable() 
    { 
     InitializeComponent(); 
    } 
    CourseWorkFinal.University0DataSet university0DataSet; 
    CourseWorkFinal.University0DataSetTableAdapters.StudentsTableAdapter university0DataSetStudentsTableAdapter; 
    private void Window_Loaded(object sender, RoutedEventArgs e) 
    { 

     university0DataSet = ((CourseWorkFinal.University0DataSet)(this.FindResource("university0DataSet"))); 
     university0DataSetStudentsTableAdapter = new CourseWorkFinal.University0DataSetTableAdapters.StudentsTableAdapter(); 
     university0DataSetStudentsTableAdapter.Fill(university0DataSet.Students); 
     System.Windows.Data.CollectionViewSource studentsViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("studentsViewSource"))); 
     studentsViewSource.View.MoveCurrentToFirst(); 
     university0DataSet.Students.StudentsRowChanged += new University0DataSet.StudentsRowChangeEventHandler(Modify); 
     university0DataSet.Students.StudentsRowDeleted += 
      new University0DataSet.StudentsRowChangeEventHandler(Modify); 

    } 
    void Modify(object sender, University0DataSet.StudentsRowChangeEvent e) 
    { 
     university0DataSetStudentsTableAdapter.Update(university0DataSet.Students); 
    } 

    private void button1_Click(object sender, RoutedEventArgs e) 
    { 
     AddStudent x = new AddStudent(); 
     x.Show(); 
    } 

    private void button2_Click(object sender, RoutedEventArgs e) 
    { 
    // university0DataSetStudentsTableAdapter.Update(university0DataSet.Students); 
    } 
}

來源

2011-12-05 Артём Царионов

發佈一些代碼來說明問題。 –

任何數量的地方。很可能，您沒有運行任何命令返回數據庫來更新數據庫。發佈你的代碼，我們可以幫忙。 – AllenG

發佈你的代碼和詳細說明可能會得到一些消極的否定。 –