I always forget the exact order in which events fire. So i found the following when i googled and wanna share it with you all :)

Page.Init + Control.Init for every control on the Web Form
The first stage in the page life cycle is initialization. After the page's control tree is populated with all the statically declared controls in the .aspx source the Init event is fired. First, the Init event for the Page object occurs, then Init event occurs for each control on the Page. Viewstate information is not available at this stage.

Page.LoadViewState
After initialization, ASP.NET loads the view state for the page. ViewState contains the state of the controls the last time the page was processed on the server.

Page.ProcessPostData
Post Data gets read from the request and control values are applied to control initalized in stage 1.

Page.Load + Control.Load for each control on the Page
If this is the first time the page is being processed (Page.IsPostback property), initial data binding is performed here.

"Change" events are fired for controls
(TextChanged, SelectedIndexChanged, and similar) The current value (from Post Data) is compared to the original value located in the ViewState. If there is a difference "Changed" events are raised.

Server-side events are fired for any validation controls
Button.Click + Button.Command
The Click and Command events are fired for the button that caused the postback

Page.PreRender + Control.PreRender

Page.SaveViewState
New values for all the controls are saved to the view state for another round-trip to the server.

Page.Render

Todd wrote a nice article about showing styles when moving your cursor around. A lot of people asked him how to alter elements of WSS WebPart Pages. He gives a good walk-through and some code. Thanks Todd :)

http://mindsharpblogs.com/todd/archive/2005/10/25/798.aspx

Modonovan posted an article which explains how to use the IRuntimeFilter to hide or show WebParts in the Portal. as stated in the article:

"By implementing IRuntimeFilter you are essentially creating a rule or a set of rules that determine if a web part should be displayed or not. For example:

• SharePoint Portal Server (SPS) uses a IRuntimeFilter for audiences. A user will setup the audiences that are allowed to see a web part (using the advanced section in the web part’s toolpane), then when a user visits the web page the filter runs and determines if the web part should be shown or not. If a virtual server is extended with SPS then the Microsoft.SharePoint.Portal.Audience.AudienceManager filter is installed by default.
  
• You could create a custom IRuntimeFilter that determines if a web part should be displayed based on the WSS role the user is a member of. This is what the sample code in this document does
  
• You could create a custom IRuntimeFilter that determines if a web part should be displayed based on any arbitrary property or rule(s) that you come up with."

I often use some kind of check in my code behind to find out which roles the current user has and then based on the information i show or hide the WebPart. This solution presented by Modonovan is far better. :) Thanks!!

http://blogs.msdn.com/modonovan/archive/2005/07/07/436394.aspx

Mart Muller did a great post about adding a reply programmatically to a discussion board. Just like my last post about programmatically adding history to an issue in an issue list also this is not described clearly in the documentation of SharePoint. The following code is used:

SPListItem newItem = discussionList.Items.Add();
newItem["Title"] = "Title of item";
newItem["Body"] = "Body Text";
newItem["ThreadID"] = [ThreadID of original thread];
newItem["Ordering"] = [Ordering of original thread] + DateTime.Now.ToString("yyyyMMddhhmmss");
newItem.Update();

Mart's article:

http://blogs.tamtam.nl/mart/SharePointTipAdding
ADiscussionReplyItemInAThreadProgramatically.aspx

Article about adding history to an issue in an issue list:

http://net.bloggix.com/PermaLink,guid,aa4c6b98-2039-432b-af80-b8baf901fdf2.aspx

If you create a WebPart containing a multiline TextBox, the TextBox does not size automatically with the width of the WebPart. Requesting the Width of the WebPart is not an option because its not yet in the clients browser. So the following example shows a way of sizing the TextBox to 100% in the WebPart. tbRemark is a TextBox with the TextMode set to TextBoxMode.MultiLine.

protected override void RenderWebPart(HtmlTextWriter output)
{
   output.WriteLine("<style>.StyleRemark { width:100%;height:100; }</style>");

   output.WriteLine("<TABLE id=\"Table1\" cellSpacing=\"1\" cellPadding=\"1\" width=\"100%\" border=\"0\">");
   output.WriteLine("<TR><TD>");

   tbRemark.Text = Remark;
   tbRemark.CssClass = "StyleRemark";
   tbRemark.RenderControl(output);

   output.WriteLine("</TD></TR>");
   output.WriteLine("</TABLE>");
}

Paul Brenk has posted some usefull code which shows us how to deserialize a string containing XML to an object using a StringReader and a XmlTextReader object. It also shows us how it handles a XML-array using serialization attributes.

http://blogs.tamtam.nl/paulb/DeserializingAnXmlstringAndXmlArrays.aspx

Microsoft has a nice collection of controls bundled into a package called "IE Web Controls". Except for the fact that they are fully unsupported some controls are very handy.

I have used the TreeView in a custom WebPart and had some difficulty setting the styles. It seems you have to set the styles DefaultStyle, HoverStyle and SelectedStyle. The DefaultStyle is used when no action takes place, the HoverStyle is set when you hover with your mouse over an item and the SelectedStyle is the style of a selected item. Here are two examples of setting the style in a TreeView.

<mytree:treeview runat="server" 
   ID="tvwResources" 
   defaultStyle="font-family:Verdana,Arial,Sans-serif;color:#000000;font-size:11px;" 
   hoverStyle="font-family:Verdana,Arial,Sans-serif;color:#000000;font-size:11px;" 
   selectedStyle="font-family:Verdana,Arial,Sans-serif;color:#000000;font-size:11px;>
</mytree:treeview>

Or programmatically

mytree.DefaultStyle["font-family"] = "Verdana,Arial,Sans-serif";
mytree.DefaultStyle["color"] = "#000000";
mytree.DefaultStyle["font-size"] = "11px";

mytree.HoverStyle["font-family"] = "Verdana,Arial,Sans-serif";
mytree.HoverStyle["color"] = "#000000";
mytree.HoverStyle["font-size"] = "11px";

mytree.SelectedStyle["font-family"] = "Verdana,Arial,Sans-serif";
mytree.SelectedStyle["color"] = "#000000";
mytree.SelectedStyle["font-size"] = "11px";

 If you use for example a Repeater and you do not want to show some field from the DataSource based on a expression, you could use the following solution. This example hides the year when the year in the DataSource is zero.

<asp:Repeater runat="server" id="rptGroup">
   <HeaderTemplate>
      <table>
   </HeaderTemplate>
   <ItemTemplate>
      <tr><td>
         <asp:Label id="lbl" runat="server" 
            Visible='<%#DisplayYear(DataBinder.Eval(Container.DataItem, "year"))%>'>
            <%#DataBinder.Eval(Container.DataItem, "year")%>
         </asp:Label>
      </td></tr>
   </ItemTemplate>
   <FooterTemplate>
      </table>
   </FooterTemplate>
</asp:Repeater>

In the code-behind the following method is added:

public bool DisplayYear(object item)
{
   int year = 0;

   try
   {
      year = Convert.ToInt32(item);
   }
   catch(exception)
   {
   }

   return year != 0;
}