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下面我有一個從數據庫中刪除記錄的方法。它在同一個對話框中時效果很好。問題是我想在另一個窗口，窗體對話框而不是DataGrid上使用此方法。一旦我移動它，它就不再起作用。如何從另一個類調用DataGrid的「選定項」？
public partial class ProjectsTable : Window
{
public ProjectsTable()
{
InitializeComponent();
}
//populates a DataGrid called "ProjectData" on the "ProjectsTable.xaml"
private void Window_Loaded(Object sender, RoutedEventArgs e)
{
BillableProjectsDataContext project = new BillableProjectsDataContext();
List<Project> projects = (from p in project.Projects
select p).ToList();
ProjectData.ItemsSource = projects;
}
// deletes the selected project
private void btnDeleteProject_Click(object sender, RoutedEventArgs e)
{
//this is the most important part, it tells the method which record to delete
Project selected = ProjectData.SelectedItem as Project;
//calls another class called "Menu_SQL" and uses it's DeleteProject method
Menu_SQL.DeleteProject(selected);
Window_Loaded(null, null);
}
}
上述方法工作得很好，問題是，我希望有我的形式，這是另一個窗口 一旦我移動它的這種方法，它不再起作用。
具體錯誤是「名稱'ProjectData'在當前上下文中不存在」。
但它確實存在，它是DataGrid的名稱。
public partial class DataForm : Window
{
public Project project;
public DataForm(Project project)
{
InitializeComponent();
this.project = project;
}
public DataForm()
{
InitializeComponent();
}
// deletes the selected project, the same exact method as before, just in another window
private void btnDeleteProject_Click(object sender, RoutedEventArgs e)
{
//this is the most important part, it tells the method which record to delete
// the problem is that this line will error because "The name 'ProjectData' does not exist in the current context"
Project selected = ProjectData.SelectedItem as Project;
Menu_SQL.DeleteProject(selected);
}
}