Question

我在更新到数据库后重新加载数据时遇到一些问题我从表单加载BindGrid（）事件加载我的gridview我在这里包含了我的代码。

我的Delcarations如下我在这里尝试过所有东西但是不能强迫它刷新网格

  Dim dbContext As New R3Delivery
   Dim threeContext As New skechersDeliveryEntities1
   Dim bs As New BindingSource


   Private Sub frmConfirmDeliverys_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

        BindGrid()
        dgDeliverys.Columns(0).ReadOnly = True
        dgDeliverys.Columns(1).ReadOnly = True
        dgDeliverys.Columns(2).ReadOnly = True

    End Sub
    Public Sub BindGrid()
        Dim cfglocation As Int16
        cfglocation = cfb.StoreLocation

        bs.DataSource = (From u In threeContext.R3Delivery Where u.isprocessed = True AndAlso u.location = 1
                          Select u)


        bs.ResetBindings(True)
        dgDeliverys.DataSource = bs
    End Sub

我的保存按钮如下

Private Sub btnSave_Click(sender As System.Object, e As System.EventArgs) Handles btnSave.Click
       threeContext.SaveChanges()

    BindGrid()
End Sub

我认为我应该展示我的表单声明以及上面的代码在我的编辑表单中，以下是我的来自

Dim frmConfirmDeliverys As New frmConfirmDeliverys
    frmConfirmDeliverys.ShowInTaskbar = False

    frmConfirmDeliverys.ShowDialog()

Answer 1

你试过这个吗？

dgDeliverys.Datasource=Nothing
dgDeliverys.DataSource = bs

或

dgDeliverys.Refresh

也像 jmcilhinney 所说，检查查询是否返回了您期望的数据。

实时更新winforms visual studio 2010 .net

1 个答案: