How to refresh an ASP.NET GridView automatically at regular intervals

A common requirement is to refresh the GridView after regular intervals. ASP.NET contains the Timer control which comes in very handy to achieve such requirements. Here's how to do so:

Add the GridView and the Timer control inside an ASP.NET AJAX UpdatePanel as shown below :

<asp:UpdatePanel ID="UpdatePanel1" runat="server">


<asp:Timer ID="Timer1" runat="server" Interval="3600" ontick="Timer1_Tick"></asp:Timer>

<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataKeyNames="CustomerID"

DataSourceID="SqlDataSource1" AllowPaging="True" AllowSorting="True">


<asp:BoundField DataField="CustomerID" HeaderText="CustomerID" ReadOnly="True" SortExpression="CustomerID" />

<asp:BoundField DataField="CompanyName" HeaderText="CompanyName" SortExpression="CompanyName" />

<asp:BoundField DataField="ContactName" HeaderText="ContactName" SortExpression="ContactName" />

<asp:BoundField DataField="Address" HeaderText="Address" SortExpression="Address" />

<asp:BoundField DataField="City" HeaderText="City" SortExpression="City" />





Then in the code behind, add the following code which refreshes the GridView after every minute


protected void Timer1_Tick(object sender, EventArgs e)





Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As EventArgs)


End Sub

About The Author

Suprotim Agarwal
Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.


Anonymous said...

Thank you and best of luck with the book.

Anonymous said...

sank youu

Rickson Menezes said...

Gives me an error, Update Panel requires ScriptManager

Rickson Menezes said...

I added a script Manager tag just above the Update Panel and it worked. It was updating my gridview every x seconds

Anonymous said...

Hello, im getting a PageRequestManagerParseErrorException, i have the code just like you suggest, what might be going wrong?

Thank you.

Suprotim Agarwal said...

For the PageRequestManagerParseErrorException error, try this link

Anonymous said...

some of the function within the grid not work??

Rahul Ostwal said...

I am filling data after every 5 min. but by this code first time it take 5 min. to fill grid. how to avoid this?

Unknown said...

Hi Rahul.
You just have to fire the Databinder code in PageLoad, like this:

protected void Page_Load(object sender, EventArgs e)




Anonymous said...

LO MAS GRANDE MUCHAS GRACIAS!!!!!!!!!!!!!!!!!!!!!!!!!


Anonymous said...

Simply gr8.........

DIM said...

Thanks for great article!!!!What we can do if we have 2 datagridviews and we want update every 5 seconds with different select commands both???

Unknown said...

Appreciate it!

lingmaaki said...

Check here..all about..Asp.Net Gridview


Unknown said...

Thanks for this article. It was very beneficial for us.

Rational Rogue said...

I know I'm quite late to this comment thread but I'm a bit green when it comes to ASPX gridview and I could use some feedback.

I have three gridviews with different sql query results being displayed that have paginated results. These gridview forms will be displayed on a monitor for an entire department and will need to automatically iterate through the paged results every two to three minutes continuously.

While I am familiar enough with PHP to make this happen. I'm utterly lost when it comes to making this happen in aspx. Can you offer some very simple and straight forward feedback on how I might get this working?

Rational Rogue said...

I have successfully added the GridView and Timer control inside my ASPX.NET page and have updated the associated VB.NET file with the code noted. I also ran into the ScriptManager issue which I've added successfully. However, the gridview is not paging automatically.

Is the C# code a requirement? I am extremely new to this, so thanks in advance for your patience with my question.

Rational Rogue said...

Thanks so much for responding. I was finally able to get one of the gridviews looping through the pages results on a timer. :-)

Suprotim Agarwal said...

Glad to hear that!

linux said...

hello i have this problem not refresh data when using binding propieties

i load data with behind method in vb .net the first time load teh data but in the second call not display data

ASPxGridView1.DataSource = Nothing
ASPxGridView1.DataSource = dtReporteGeneral



and display next error


error: Referencia a objeto no establecida como instancia de un objeto.

not load columns or any data in the grid.

pleas help me