Question

I’m a beginner in C# and asp.net, i have a DropDownList with an item with text : "No item selected." and index 0.

I have a button Delete which obviously, deletes items from the DDL.

But i want to disable it when there’s only the "No item selected." item.

I tried this code :

protected void Page_Load(object sender, EventArgs e)
{
    Button2.Enabled = false;
}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    if (DropDownList1.SelectedIndex == 0)
    {
        Button2.Enabled = false;
    }
    else
    {
        Button2.Enabled = true;
    }
}

But nothing happens when i add new items and select it. The Delete button is still disabled.

Answer 1

try this

protected void Page_Load(object sender, EventArgs e)
{
  if(!Page.IsPosBack)
  {
    Button2.Enabled = false;
  }
}

It was resetting to “disabled” after postback