Data Controls :: Hiding Button Control Inside Repeater And Get Index Value Of Button

I have this code

protected void Page_Load(object sender, EventArgs e) {
if (!IsPostBack) {
ArrayList olist = new ArrayList() {"visible", "invisible", "visible", "visible", "visible", "invisible", "visible", "visible", "invisible"};
for (int i = 0; i <= olist.Count-1; i++) {
if (olist[i].ToString() == "visible" ) {

[Code] ....

I want to hide the button if records found "invisible".

The output must be like this:

-----------------------------------------------------------------------------------------------------

Another question is

I want to get the button index value  inside the repeater row, when the user click the button the index value display one Label3

void repbtn_Click(object sender, EventArgs e) {
Label3.Text = "The button item index that clicked in the repeater is: "; // + irepeater.Items. ;
}