使用c#2015 我已经通过实体框架创建了到SQL SERVER的连接。我添加了对象数据源并加载了bindingnavigator。一切正常,但是当我单击ADD(+)键时,它会移动到新记录,但只需单击SAVE。它不会保存新记录
private void Form1_Load(object sender, EventArgs e)
{
_context = new proveEntities();
var query = _context.Master.Where(c => c.IdMaster>0);
this.tab_MasterBindingSource.DataSource = query.ToList();
}
private void BindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
tab_MasterBindingSource.EndEdit();
_context.SaveChanges();
}