Refresh DataGridView every 20 seconds?

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I am using Microsoft Visual Studio 2005

I have a datagridview with the following code:

VB

sqlSA = "SELECT * FROM Mas_Display"
DGVsa.DataSource = con.ReturnQuery(sqlSA)

it is my load_form
how do i refresh it every 20 seconds?

i created a timer but im not sure how to use it for refreshing a dgv every 20 seconds.
this is my only code for my timer:

VB

LBLdate.Text = DateTime.Now.ToLongDateString() & " | " & DateTime.Now.ToLongTimeString()

Super Help! Thanks in advance

Posted 2-Jun-14 18:01pm

charliedev

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Maciej Los 3-Jun-14 1:52am

refresh dgv every 20 seconds - Why?
WinForms or WebControls?

2 solutions

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Phanindra Baddula · Answer 1 · 2014-06-02T19:24:00

XML

<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

      <asp:Timer ID="Timer1" runat="server" Interval="20000" OnTick="Timer1_Tick"></asp:Timer>
 <asp:UpdatePanel runat="server">
          <ContentTemplate>
         <asp:GridView ID="DGVsa" runat="server"></asp:GridView>
          </ContentTemplate>
          <Triggers>
              <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
              
          </Triggers>

      </asp:UpdatePanel>

in .Cs

C#

protected void Timer1_Tick(object sender, EventArgs e)
       {
Gridbinding()

       }
public void Gridbinding()
{
        sqlSA = "SELECT * FROM Mas_Display"
        DGVsa.DataSource = con.ReturnQuery(sqlSA);
        DGVsa.DataBind();
}

korsakof · Answer 2 · 2014-06-02T21:24:00

Solution 2

Use a control that is called Timer. You place the code to refresh your datagrid in method Tick. (timer.tick)

VB

timer.interval=20000 'Time in miliseconds

timer.enable=true
timer.start()

I hope this is what you are looking for.

Posted 2-Jun-14 21:24pm

korsakof

Updated 2-Jun-14 21:25pm

v2