下拉列表以標記輸出C＃

Question

我想用按鈕顯示從DropDownList輸出的不同標簽

select Item on DropDownList and click button to show output in label

有人可以幫我嗎？

Answer 1

protected void Button1_Click(object sender, EventArgs e)
{
       Label1.Text = DropDownList1.SelectedValue;
}

Answer 2

只需寫下button click event

protected void Button1_Click(object sender, EventArgs e) { 
    label.text = ComboBox.SelectedText;
}

Answer 3

protected void Button1_Click(object sender, EventArgs e)
{
    lable1.Text=DropDownList1.SelectedValue.ToString();
}

或者你可以做

   protected void Button1_Click(object sender, EventArgs e)
   {
       String input=DropDownList1.SelectedIndex >= 0 ? DropDownList1.SelectedItem.ToString() : "";
       lable1.Text=input;
   }