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Click on LinkButton in Gridview: why is the Grid reloaded most of the times but not always?

I´m trying to understand the annoying refreshment of the GridView/Repeater that occurs most of the times I click on a LinkButton within that element. If this is caused by the Postback, then why doesn't it happen all the times?
And if it is not caused always, do I might even get rid of it?
I usually do this to get detailed information on a cell clicked in a Grid or repeater:
<asp:LinkButton ID="ButtonSelect" runat="server" CommandName ="Select" CommandArgument = '<%# Eval("date") %>' Text='<%# Bind("TAG") %>' OnClick="GetDetails"/>
The data processed in the "GetDetails" method will then be displayed in some other element. There wouldn't be any need to refresh the Grid.
Is this the normal behavior for any LinkButton click in a GridView?
Martin

It's the normal action of a server button within a gridview. It will cause a postback. A postback will force the Page LifeCycle. The entire page will be recreated and Databinding may or may not occur depending on your cache options and programming.
"Fixing" that really depends what you are trying to accomplish. If it's simply to stop the "screen flicker" due to the postback, consider using AJAX calls or <asp:UpdatePanel> server controls.
If you are trying to work with JS on the clientside and just wish to defer the postback until later, convert the button to a template field and replace the <asp:LinkButton> with a basic html control <a href="javascript:void();" ...>, <button type='button'>, <input type='button' ..., etc...

asp:button with no post back or refreshing the page

I have button in my page that when click on fires a jquery method that shows a div, but if the browser doesn't support javascript I want to fire a code behind method (using a postback). Is this possible? I'm already using this code but i can't see any results:
<asp:Button ID="Button1" runat="server" Text="Upload Files Here" Width="187px" onClick="CodeBehindMethod" OnClientClick="show_upload_box();return false"/>
and this is my jquery code:
function show_upload_box() {
$("#pop_up_background").css({
"opacity": "0.4"
});
$("#pop_up_background").fadeIn("slow");
$("#signup_pop_up_box").fadeIn('slow');
window.scroll(0, 0);
}

If the browser doesn't support JavaScript then your button would not work.
In ASP.NET, the runat="server" instruction is actually tied to a JavaScript method that submits a form (view page source to see that method).
Change or remove the value of that property to prevent the post back to your server.

Linkbutton OnCommand not firing after upgrading to .Net 4

I have a webforms project that was written in ASP.Net 3.5 and works fine. I decided to upgrade it to 4.0 for various reasons. The upgrade went fine. However, on one particular page, I have certain linkbuttons that fire an event in code behind. The event never fires on click. Other controls on the page, like an link button with client side code and Telerik radgrid work fine.
This Works
<asp:LinkButton ID="InsertLinkButton" runat="server">
<asp:Image ID="ImageButton1" runat="server" />Add New Employee</asp:LinkButton>
//Code behind adding javascript event
InsertLinkButton.Attributes["onclick"] = String.Format("return ShowInsertForm();");
This Doesn't
<asp:LinkButton ID="ALinkButton" runat="server" CommandName="A" OnCommand="LinkButton_Command" ">A</asp:LinkButton>
The page is a content page with a master page. Any ideas?

I'm not sure if this is just a typo on your post but your markup isn't correct on the LinkButton.
It is currently:
<asp:LinkButton ID="ALinkButton" runat="server"
CommandName="A" OnCommand="LinkButton_Command" ">A</asp:LinkButton>
It should be:
<asp:LinkButton ID="ALinkButton" runat="server"
CommandName="A" OnCommand="LinkButton_Command">A</asp:LinkButton>

The panel containing the controls was referenced as an updated control in a Telerik RadAjaxManager buried in the mark up. If I removed the RadAjaxManager, it worked. Apparently the linkbutton command event didn't fire the ajax callback. Since this worked in 3.5, I'm wondering if some metadata didn't get converted properly during the 3.5>4 upgrade?
Anyway, I updated the references of what was supposed to fire an ajax call from the RadAjaxManager and it now works. Thanks for the help!

Javascript to code behind in c# asp.net

Hi im looking to find out after I do this:
c#
div.Attributes.Add("onclick", "return confirm_delete();");
javascript:
function confirm_delete()
{
if (confirm("Are you sure you want to delete this comment?")==true)
return true;
else
return false;
}
It pops up with a message box with yes and no if I press yes how can I add a function into my c# how can I call it?
If yes go to c# code behind
and add in confirm_delete
if yes was clicked
do this
I need it so when some one clickes yes I can (from code behind in asp.net c#) add in a method to delete from mysql database.
Just dont know how I refrence to the javascript
public static string confirm_delete()
{
return something (dont know how to)
}

How about this add a button with the clientside click event instead of adding it in the code behind. Check to see if the popup returns true. If you return false it should prevent the server side event from firing.
<asp:Button ID="btn" OnClientClick="if(confirm_delete()){
/* post back*/
}else{
return false;
};" OnClick="btnDelete_Click" runat="server" Text="delete"/>
protected void btnDelete_Click(object sender, EventArgs e)
{
//run your serverside code if confirm was pressed.
}

Your JavaScript will need to call a page on your server. This is typically accomplished with AJAX and a web service.
This page on MSDN has a good overview of what's involved.
If you're interested in using jQuery, this page has a simple example.

You may be able to use a PageMethod to call your codebehind function, check out the following link for an example
ASP.NET Ajax PageMethods

Wondering why you are using a div? Can't you use asp.net Button / LinkButton and limiting it's postback based on confirm value?
e.g.
<asp:LinkButton ID="DeleteButton" runat="server" CausesValidation="False"
CommandName="Delete" Text="Delete"
OnClientClick="return confirm('Are you certain you want to delete this
product?');">
</asp:LinkButton>
Reference.

How to launching email client on LinkButton click event?

How can I launch an Outlook email window (similar to what mailto: does in a hyperlink) ?
This needs to be done in a LinkButton click event.

Consider that the mailto functionality is a function that needs to happen client side. You are going to need javascript to do it. Depending on when you want the mailto to happen you have two choices.
If you want it to happen as soon as the LinkButton is clicked then just add to the LinkButton's OnClientClick event:
<asp:LinkButton runat="server" ID="btnEmail" Text="Send Email"
OnClientClick="window.open('mailto:someone#somewhere.com','email');">
</asp:LinkButton>
If you want it to happen AFTER the server side code has run your are going to have wire up the javascript event to run when the new page starts up:
// At the end of your LinkButton server side OnClick event add the following code:
ClientScript.RegisterStartupScript(this.GetType(), "FormLoading",
"window.open('mailto:someone#somewhere.com','email');", true);
Hope that helps.

I've accomplished this using the OnClientClick event of the LinkButton.
You can use:
<asp:LinkButton runat="server" ID="btnEmail" Text="Send Email"
OnClientClick="window.location.href = 'mailto:someone#something.com?subject=Email Subject';">
</asp:LinkButton>
You can also do this in code, in case you need to load an email address from a database or something:
btnEmail.OnClientClick = "window.location.href = 'mailto:someone#something.com?subject=Email Subject';";