中继器内的按钮Onclick

Question

我创建了一个从webbservice获取3个不同值（名称，姓氏和编号）的转发器。根据我收到的数字是1还是0，有2个按钮设置为Visible = true或false。（btnNumber0和btnNumber1）。

<asp:Repeater ID="rpt1" runat="server" OnItemDataBound="rptHB_ItemDataBound" OnItemCommand="rptHB_ItemCommand">     
    <ItemTemplate>
        <div>
            <h1 class="click">
                <asp:Label ID="lblName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Name").ToString() %>'></asp:Label>
                <asp:Label ID="lblSurname" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Surname").ToString() %>'></asp:Label>
                <asp:Label ID="lblNumber" runat="server" Visible="false" Text='<%# DataBinder.Eval(Container.DataItem, "Numer").ToString() %>'></asp:Label>
            </h1>

            <div class="expand"> 
                <select id="optColor">
                    <option>Blue</option>
                    <option>Red</option>
                    <option>Yellow</option>                       
                    <option>Green</option>
                    <option>Black</option>
                </select>                  

                <asp:Button ID="btnNumber0" runat="server" Text="0"/>
                <asp:Button ID="btnNumber1" runat="server" Text="1"/>                            
            </div>
        </div>
    </ItemTemplate>
</asp:Repeater>

我无法工作的是使我的2按钮具有onClick功能。在OnCick内部，我想从我选择的人员那里获取名称和颜色（optColor），然后将其发送回我的webbservice。我是否必须使用OnItemCommand，如果可以，您可以帮我吗？还是您可以做到的另一种方式？

protected void Page_Load(object sender, EventArgs e)
{
    GetInfo();
}

private void GetInfo()
{
    rpt1.DataSource = client.SendInfo();
    rpt1.DataBind();
}

private bool Getbutton(string ValueNumber)
{
    return ValueNumber == "0";
}

protected void rptHB_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    Label lblNewNumber = (Label)e.Item.FindControl("lblNumber");
    Label lblNewName = (Label)e.Item.FindControl("lblName");
    Button btnNewNumber0 = (Button)e.Item.FindControl("btnNumer0");
    Button btnNewNumber1 = (Button)e.Item.FindControl("btnNumber1");
    string Number = lblNewNumber.Text;
    btnNewNumber0.Visible = GetButton(Number);
    btnNewNumber1.Visible = !GetButton(Number);
 }

protected void rptHB_ItemCommand(object source, RepeaterCommandEventArgs e)
{
    /* ??? */
}

Answer 1

如果我正确理解您的要求，则想处理两个按钮的click事件，并获取该Person的名称和颜色的值RepeaterItem。您可以使用相同的处理程序：

aspx：

<asp:Button ID="btnNumber0" OnClick="btn_Click" runat="server" Text="0"/>
<asp:Button ID="btnNumber1" OnClick="btn_Click" runat="server" Text="1"/>   

代码背后：

protected void btn_Click(object sender, EventArgs e)
{
    Button btn = (Button) sender;
    RepeaterItem item = (RepeaterItem) btn.NamingContainer;
    Button btnNewNumber0 = (Button)item.FindControl("btnNumer0");
    Button btnNewNumber1 = (Button)item.FindControl("btnNumer1");
    bool btn0Clicked = btn == btnNewNumber0;
    btnNewNumber0.Visible = !btn0Clicked;
    btnNewNumber1.Visible = btn0Clicked;
    // now call your webservice, you have all you need here
    Label lblName = (Label) item.FindControl("lblName"); 
    Label lblSurname = (Label) item.FindControl("lblSurname"); 
    Label lblNumber = (Label) item.FindControl("lblNumber"); 
    DropDownList ddlColor = (DropDownList) item.FindControl("ddlColor");
    // now call your webservice, you get the color-selection via ddlColor.SelectedValue
}

如果要在服务器端访问它，请也使用DropDownListHTML代替HTML Select。