每 3 秒动态自动刷新 datagridview vb.net
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Dynamically auto refresh datagridview every 3 seconds vb.net
提问by wwrwer
In my form I have a datagridview which needs to be automatically refreshedevery 2 seconds without me having to close the application. I have used the following timer code to try and achieve that. I have placed this code in my form load which is also where my datagridview code is:
在我的表单中，我有一个 datagridview，它需要每 2 秒自动刷新一次，而不必关闭应用程序。我已经使用以下计时器代码来尝试实现这一目标。我已将此代码放在我的表单加载中，这也是我的 datagridview 代码所在的位置：
Dim timer As New Timer()
timer.Interval = 2000
AddHandler timer.Tick, AddressOf timer_Tick
timer.Start()
Private Sub timer_Tick(ByVal sender As Object, ByVal e As EventArgs)
Me.DataGridView1.Refresh()
End Sub
However, all it does is flicker and doesn't actually refresh the datagridview. My datagrid is connected to a Access database and is not binded, I did with SQL. What am I doing wrong?
但是，它所做的只是闪烁，实际上并没有刷新 datagridview。我的数据网格连接到 Access 数据库并且没有绑定，我用 SQL 做到了。我究竟做错了什么？
回答by OneFineDay
DGV.Refreshtell the the program to redraw the control. You need to rerun the process that gets your data and recall it.
DGV.Refresh告诉程序重绘控件。您需要重新运行获取数据并调用它的过程。
Private Sub timer_Tick(ByVal sender As Object, ByVal e As EventArgs)
UpdateDGV()
End Sub
Private Sub UpdateDGV()
'run sql stuff in here
End Sub
