Fixing the McAfee Windows XP crash

YES... I know how to fix the windows XP McAfee crash

1. Disconnect the hard drive from the machine and connect it to another machine as a secondary drive.
2. Copy the file "mfehidk.sys" from a non-currupted Windows XP system to Windows/System32/Drivers
3. Reconnect the drive back and start the OS...

You all can thank me later :)

Dynamically add LinkButton to placeholder

Sometimes you just feel real stupid when you wrote a piece of code which worked and then it didnt 2 months later when you wrote the same thing... here is a small piece of code I wrote to add dynamic linkbuttons to placeholder which call a function when clicked...

LinkButton filterButton = new LinkButton();
filterButton.ID = "SomeUniqueID";
filterButton.Text = "WhateverNeedsDisplayedInHyperlink";
filterButton.Click += (showFile);
filterButton.DataBind();
ShowFileLinks.Controls.Add(filterButton);
ShowFileLinks.Controls.Add(new LiteralControl("
"));

private void showFile(object sender, EventArgs e1)
{
//this is your unique buttonID...do whatever you want with it..Prob query the Database
int btnIndex = Convert.ToInt32(((LinkButton)sender).ID);

}

Generate unique strings and numbers in C#

System.Guid is used whenever we need to generate a unique key, but it is very long. That's in many cases not an issue, but in a web scenario where it is part of the URL we need to use its string representation which is 36 characters long. It clutters up the URL and is just basically ugly.

It is not possible to shorten it without loosing some of the uniqueness of the GUID, but we can come a long way if we can accept a 16 character string instead.

We can change the standard GUID string representation:

21726045-e8f7-4b09-abd8-4bcc926e9e28

Into a shorter string:

3c4ebc5f5f2c4edc

The following method creates the shorter string and it is actually very unique. An iteration of 10 million didn.t create a duplicate. It uses the uniqueness of a GUID to create the string.

private string GenerateId()
{
long i = 1;
foreach (byte b in Guid.NewGuid().ToByteArray())
{
i *= ((int)b + 1);
}
return string.Format("{0:x}", i - DateTime.Now.Ticks);
}

If you instead want numbers instead of a string, you can do that to but then you need to go up to 19 characters. The following method converts a GUID to an Int64.

private long GenerateId()
{
byte[] buffer = Guid.NewGuid().ToByteArray();
return BitConverter.ToInt64(buffer, 0);
}

The standard GUID is still the best way to ensure the uniqueness even though it isn't 100% unique.

Firefox issues

Description

How do I restore the Firefox Menu Bar?

This happened

Every time Firefox opened,I selected the close option on some toolbar and eventually had no menu toolbars left in firefox. Could not right click and restore the menu and felt really stupid being stuck with a bare naked firefox window.

Solution

Hit the Alt key to show the Menu bar, then open View > Toolbars and check-mark the Menu bar.

And now ALL IZ WELL !!!!