我有两个下拉列表和一个按钮.我在项目中使用了断点,一切正常.但一旦我退出按钮的功能,这就是我得到的错误:
不能在DropDownList中 Select 多个项目.
下面是我对该按钮的代码:
protected void Button1_Click(object sender, EventArgs e)
{
if (ddlPlayer1.SelectedItem.Value != "0" || ddlPlayer2.SelectedItem.Value != "0" && ddlPlayer1.SelectedItem.Value != ddlPlayer2.SelectedItem.Value)
{
lblPlayer1Score.Text = Repository.Instance.ReturnScore(ddlPlayer1.SelectedValue.ToString(), ddlPlayer2.SelectedValue.ToString()).Rows[0][0].ToString();
lblPlayer2Score.Text = Repository.Instance.ReturnScore(ddlPlayer2.SelectedValue.ToString(), ddlPlayer1.SelectedValue.ToString()).Rows[0][0].ToString();
}
ddlPlayer1.DataBind();
ddlPlayer2.DataBind();
}
我做错了什么?