Question

Hi I have like 50 pages of code that I should write comments to it …
Can you guys show me the best way. I meant I need you to write me a sample …
the comments should contain nearly everything (classes, constructors, attribute, methods, events, functions)

Answer 1

Don’t comment what is obvious like

//The width of the line is 2
lineWidth = 2;

or

//Clones the snapshot
tempDraw = (Bitmap)snapshot.Clone();

There might be a good idea to explain WHY a certain code line is there. For example explain why

panel1.Invalidate();

Needs to be invalidated.

The basic idea is: add extra information with comments and use them for explanations, don’t create redundancy and duplication.

EDIT:

You might also want to explain why each item in the toolbar needs to be unchecked here:

private void toolStripButton1_Click(object sender, EventArgs e)
{
    foreach (ToolStripButton btn in toolStrip1.Items)
    {
        btn.Checked = false;
    }
...
}

because is not obvious from the name of the event handler which button is clicked in order to understand why all buttons are unchecked.

A good comment would be something like:

private void toolStripButton1_Click(object sender, EventArgs e)
{
    //Deselect all previously applied filters because the user clicked "disable all",
    //which removes the effects of all filters and we want to show this the the user
    foreach (ToolStripButton btn in toolStrip1.Items)
    {
        btn.Checked = false;
    }
...
}