Error when binding gridview on page load

Question

I was using button click event to bind the data into gridview and used templatefield to modify one of the column to make it clickable but when I bind the gridview on a page load, it shows the data and I can click the data that needs to be clicked but the problem occurs when I click the data. It says this error:

Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.

I don't know what is happening here because it was working fine when using a button to trigger the gridview

You have to show your code, otherwise we can't fix it. But you should register client side events on your `GridViewRow.Cell` with `Page.ClientScript.GetPostBackClientHyperlink` in `RowCreated` of the `GridView`. — Tim Schmelter, Nov 21 '16 at 13:10
How do i register it with Page.ClientScript.GetPostBackClientHyperlink? — Sushan Limbu, Nov 21 '16 at 13:11
Edit your question, include your code, then we can help to fix it. However, i've provided an example here: http://stackoverflow.com/a/6250846/284240 — Tim Schmelter, Nov 21 '16 at 13:14
well, you haven't shown the code where you register the client script — Tim Schmelter, Nov 21 '16 at 13:31
Yes _" used templatefield to modify one of the column to make it clickable"_ Also, your `getData` is incomplete, isn't it? You return a `DataTable` which you haven't initialized. — Tim Schmelter, Nov 21 '16 at 13:34
No, there is more code which initializes the class that holds this data table and the getdata is completed with more data if it is not a "Event" and that works fine. But right now I am looking at making the Event gridview work that shows all the events and makes the StadiumName clickable. Let me update this with templatefield that i use — Sushan Limbu, Nov 21 '16 at 13:38

score 0 · Answer 1 · answered Nov 21 '16 at 14:19

0

I fixed it now. I simply had to create a new method called BindGridview() then use if (!IsPostBack) to call that method and it works fine now :D

answered Nov 21 '16 at 14:19

Sushan Limbu

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Error when binding gridview on page load

1 Answers1