Hi,dihawa you can add your buttons to an Button array and then you can enable and disable buttons as you want.Here is a sample code matches your requirement. Hope this helps to you :-)
Button[] arrbtn = new Button[4];
arrbtn[0] = myButton1;
arrbtn[1] = myButton2;
arrbtn[2] = myButton3;
arrbtn[3] = myButton4;
foreach(Button k in arrbtn)
{
if (mysumLabel.Text.Equals(k.Name))
{
k.Enabled = true;
}
else
{
k.Enabled = false;
}
}