Question

当我必须用一个表填充dgv时，没关系，我知道怎么做（List＆lt; Entity＆gt;来自数据库到数据源）。但是当我有一个FK与另一个表的表时，我不知道如何显示该表的另一个属性（而不是用户不会理解的ID）。我认为我对LINQ的所作所为非常糟糕（顺便说一下，我是LINQ的新手，我不知道我是否需要它，至少在这里）。当我尝试从DGV获取所选ID时，我的解决方案出现问题。

private void LoadDGV()
    {
        BuildingLogic oBuildingLogic;
        try
        {
            oBuildingLogic = new BuildingLogic();
            SocietyLogic oSocietyLogic = new SocietyLogic();
            List<Building> listBuildings = oBuildingLogic.GetAll();
            List<Society> listSocieties = oSocietyLogic.GetAll();


            this.dgvBuildings.DataSource = (from building in listBuildings
                                            join society in listSocieties
                                            on building.IDSociety equals society.ID
                                            select new { building.ID, FullName = building.FullName, ShortName = building.ShortName, Society = society.Name, Date = building.Date, City = building.City, Address = building.Adress }).ToList();
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        finally
        {
            oBuildingLogic = null;
        }
    }

    private int ItemSelectedID()
    {
        if (this.dgvBuildings.SelectedRows.Count > 0)
        {
            //something like this?
            //this.dgvBuildings.SelectedRows[0].DataBoundItem;
        }
        else
        {
            return 0;
        }
    }

Answer 1

return Convert.ToInt32(this.dgvBuildings.SelectedRows[0].Cells[0].Value);

C＃WinForms：使用来自两个不同表的数据源填充datagridview

1 个答案: