reapeater控件的button的click

Question

请问为何执行一个reapeater里面的button的click的时候会先把我之前点击过的dropdownlist 的select事件先执行一遍，然后才会执行button的click，怎样才能只执行click事件？ 有没有人遇到过同样问题？希望能有人帮忙解决 谢谢！

Answer 1

前台代码：
<asp:repeater id="Repeater1" runat="server" enableviewstate="False" onitemcommand="Repeater1_ItemCommand">
<ItemTemplate>        
处理人:
<asp:DropDownList ID="areas" runat="server" thisIndex="<%# Container.ItemIndex %>"  OnSelectedIndexChanged="SelectedIndexChanged_area" AutoPostBack="true">
                                            
<asp:ListItem Value="">--选择--</asp:ListItem>
<asp:ListItem Value="a">a</asp:ListItem>
<asp:ListItem Value="b">b</asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="handler" runat="server">
</asp:DropDownList>
                                   
选择类型:
<asp:DropDownList ID="big_type"  runat="server" thisIndex="<%# Container.ItemIndex %>"  OnSelectedIndexChanged="SelectedIndexChanged_type" AutoPostBack="true">
<asp:ListItem Value="">--选择类型--</asp:ListItem>
<asp:ListItem Value="a">a</asp:ListItem>
<asp:ListItem Value="b">b</asp:ListItem>
</asp:DropDownList>
小类型:
<asp:DropDownList ID="small_type" runat="server">
</asp:DropDownList><asp:ImageButton ID="ImageButton1" runat="server" 
ImageUrl="~/images/gengxin.jpg" CommandName="time" ValidationGroup="<%# Container.ItemIndex %>"/>
</ItemTemplate>
</asp:repeater>后台：
protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            switch (e.CommandName)
            {                case "time":
                   <这里是我的执行代码>
            }        }        protected void SelectedIndexChanged_area(object sender, EventArgs e)
        {
            DropDownList dl = sender as DropDownList;
            int i = int.Parse(dl.Attributes["thisIndex"]);
                DropDownList areas = (DropDownList)Repeater1.Items[i].FindControl("areas");
                DropDownList handler = (DropDownList)Repeater1.Items[i].FindControl("handler");
                DataTable dt = Getdata.data(areas.SelectedItem.Value);
                handler.DataSource = dt;
                handler.DataTextField = dt.Columns["name"].ToString();
                handler.DataValueField = dt.Columns["name"].ToString();
                handler.DataBind();//绑定数据库
        }
        protected void SelectedIndexChanged_type(object sender, EventArgs e)
        {
            DropDownList dl = sender as DropDownList;
            int i = int.Parse(dl.Attributes["thisIndex"]);
                DropDownList big_type = (DropDownList)Repeater1.Items[i].FindControl("big_type");
                DropDownList small_type = (DropDownList)Repeater1.Items[i].FindControl("small_type");
                DataTable dt = Getdata.data(big_type.SelectedItem.Value);
                small_type.DataSource = dt;
                small_type.DataTextField = dt.Columns["name"].ToString();
                small_type.DataValueField = dt.Columns["name"].ToString();
                small_type.DataBind();//绑定数据库
        }

Answer 2

可以考虑用一个隐藏的标识来标识事件是不是需要执行select事件。

Answer 3

<asp:ImageButton ID="ImageButton1" runat="server"  Click="ImageButton1_Click"
ImageUrl="~/images/gengxin.jpg" CommandName="time" ValidationGroup="<%# Container.ItemIndex %>"/>
   
 private void ImageButton1_Click(object sender, EventArgs e)
{
response.write("ok");
}

Answer 4

就是奇怪为什么我点击button会触发其他事件 是itemchange的问题么

Answer 5

将dropdownlist的AutoPostBack属性设为true

Answer 6

大哥 我贴了代码出来啦 是true

Answer 7

很奇怪。。呵呵
给
<asp:ImageButton ID="ImageButton1" runat="server" 
ImageUrl="~/images/gengxin.jpg" CommandName="time" ValidationGroup="<%# Container.ItemIndex %>"/>
</ItemTemplate>
赋个事件