how to select button in continuous way

Question

i have dynamically created buttons eg 1,2,3,4,5,6,7,8 if i select 2,3,4, then i cant select 6 and skip 4 or u can say if i select 2,3,4,5,6 then if want to deselect 4 then i have to deselect 5 and 6 first.

 

 

private void GetControls()

{

count++;

for (int i = 10; i < 12; i++)

{

for (int j = 0; j < 60; j += 15)

{

Button btn = new Button();

btn.Text = i + "-" + j;

btn.ID = i + "." + j;

btn.Command += new CommandEventHandler(this.btn_Click);

// btn.Click += btn_Click;

flag = true;

btn.CommandName = i + "-" + j;

if (count==1)

{

PlaceHolder1.Controls.Add(btn);

List<string> createdControls = Session["Controls"] != null ? Session["Controls"] as List<string> : new List<string>();

if (!createdControls.Contains(btn.ID)) createdControls.Add(btn.ID);

Session["Controls"] = createdControls;

}

}

}

}

private void btn_Click(object sender, CommandEventArgs e)

{

count++;

//ResetButton();

Button btn = sender as Button;

string ID = (sender as Button).ID;

string text = (sender as Button).Text;

ResetButton(Convert.ToDouble(ID));

Label1.Text = " Congrates! Your meeting time has been sheduled upto " + ID;

} //}

private void ResetButton(double selectedButtonID)

{

List<string> createdControls = Session["Controls"] != null ? Session["Controls"] as List<string> : new List<string>();

TimeSpan timespan = TimeSpan.FromHours(selectedButtonID);

string currentSelectedTime = timespan.ToString("h\\:mm");

foreach (string buttonID in createdControls)

{

if (!string.IsNullOrEmpty(buttonID))

{

int comparisonResult = timespan.CompareTo(TimeSpan.FromHours(Convert.ToDouble(buttonID)));

Button button = Page.FindControl(buttonID) as Button;

if (button != null && comparisonResult >= 0 )

{

if (button.BackColor == Color.Yellow)

{

button.BackColor = System.Drawing.Color.GhostWhite;

}

else if (button.BackColor == Color.GhostWhite)

{

button.BackColor = System.Drawing.Color.GhostWhite;

}

else

{

button.BackColor = System.Drawing.Color.Yellow;

}