F5 reresh problem

[YKI]

Hello all,

I'm creating a creating a web page with C# and ASP.NET where I have a dataGrid with names. It works OK but every time I push on the F5 key reloads all the page again and duplicates the names that I have in the dataGrid. I tested it with IsPostBack but it doesn't work.
Does anybody knows how to overcome to this problem?

Thanks anyway

YKI

[Floydan]

Hello all,

I'm creating a creating a web page with C# and ASP.NET where I have a dataGrid with names. It works OK but every time I push on the F5 key reloads all the page again and duplicates the names that I have in the dataGrid. I tested it with IsPostBack but it doesn't work.
Does anybody knows how to overcome to this problem?

Thanks anyway

YKI

Hi,
IsPostBack wont become true when you refresh.

To make sure you dont get duplicates you can either clear the datagrid before you start adding values to it.

But what amazes me is the fact that the DataGrid retains it values even though you refresh the page...

[radcaesar]

Write ur Dtabind code inside the

If ! (IsPostback)
{

}

[Floydan]

Write ur Dtabind code inside the

If ! (IsPostback)
{

}

But hitting refresh wont fire the PostBack event...

[Plater]

But hitting refresh wont fire the PostBack event...

Correct, which is why the !isPostBack is used

[Floydan]

Correct, which is why the !isPostBack is used

Forgive my ignorant question. But how can the DataGrid retain its previous state and content between refreshes?

In his question he states that after hitting F5 refresh the datagrids items are doubled. I just dont see how that is possible.
Hitting refresh should refresh the browser and fire off the Page_Load event as if it is the first time the browser is loaded.
Ergo (advanced words here ;) ) the DataGrid should be cleared on the refresh and then refilled when the Page_Load event is fired. !IsPostBack wont affect his issue at all.

or have i missunderstood the question entirely?

[Frinavale]

But hitting refresh wont fire the PostBack event...

Just to clarify.....

When you hit F5 you get this message saying:

"To display the webpage again, blabla needs to Resend the information you've previously submitted.

If you were making a purchase, you should click cancel to avoid a duplicate transaction."


The information is resubmitted...

I just checked if a PostBack is caused upon refresh using the debugger and sure enough it does happen :D


Cheers!

-Frinny

[Frinavale]

Forgive my ignorant question. But how can the DataGrid retain its previous state and content between refreshes?

In his question he states that after hitting F5 refresh the datagrids items are doubled. I just dont see how that is possible.
Hitting refresh should refresh the browser and fire off the Page_Load event as if it is the first time the browser is loaded.
Ergo (advanced words here ;) ) the DataGrid should be cleared on the refresh and then refilled when the Page_Load event is fired. !IsPostBack wont affect his issue at all.

or have i missunderstood the question entirely?

He could possibly be using some sort of concatenation when storing the data source for the DataGrid.

Floydan has a point here....we don't really know what you're trying to do without seeing the code that handles your data source for the DataGrid.

YKI, could you please provide us with this snippet of code so that we can help you better.

Thanks!

-Frinny

[Floydan]

Just to clarify.....

When you hit F5 you get this message saying:

"To display the webpage again, blabla needs to Resend the information you've previously submitted.

If you were making a purchase, you should click cancel to avoid a duplicate transaction."


The information is resubmitted...

I just checked if a PostBack is caused upon refresh using the debugger and sure enough it does happen :D


Cheers!

-Frinny

Good point, forgot all about the reposting data question.