如何从发件人onclick事件中获取价值

Question

此我的客户端我输入了值Eval("UserId")并尝试将其置于服务器上

  <input type="button" id="Promouter" runat="server"  
        value='<%# Eval("UserId") %>' 
        onserverclick="Promoter_Onclick"> <%# Eval("FirstName") %> </input>

此服务器

protected void Promoter_Onclick(object sender, EventArgs e)
{
    InfinityNightDataContext data = new InfinityNightDataContext();
    lvInvaited.DataSource = data.PartyPpls.Where(dbPartyPpls => dbPartyPpls.PartyId == 1 && dbPartyPpls.PromoterId == sender.value);
    lvInvaited.DataBind();
    lvInvaited.Visible = true;

}

我可以看到我需要的发件人的价值，但我从发件人那里得到它我知道sender.value dosn不工作 如何从发件人

获取此值

Answer 1

您可能需要将其强制转换为HtmlInputButton。

protected void Promoter_Onclick(object sender, EventArgs e)
{
    HtmlInputButton button = (HtmlInputButton)sender;
    int value = int.Parse(button.Value.ToString()); // or int, whatever it'll be.

    InfinityNightDataContext data = new InfinityNightDataContext();
    lvInvaited.DataSource = data.PartyPpls.Where(dbPartyPpls => dbPartyPpls.PartyId == 1 && dbPartyPpls.PromoterId == value);
    lvInvaited.DataBind();
    lvInvaited.Visible = true;

}