如何让Repeater中的TextBox触发ItemCommand事件？

Question

如题：          <asp:Repeater ID="Repeater1" runat="server" 
                onitemcommand="Repeater1_ItemCommand" onitemdatabound="Repeater1_ItemDataBound">
                <ItemTemplate>
                    <tr>
                        <td>
                            <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true"></asp:TextBox>
                        </td>
                        <td>
                            <asp:Button ID="Button1" runat="server" Text="Button" />
                        </td>
                        <td>
                            <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true"/>
                        </td>
                    </tr>
                </ItemTemplate>
            </asp:Repeater>
repeater中有个TextBox1，如何让，当我修改textBox的值时候触发ItemCommand事件？

Answer 1

 onfocus="test(this)"
 function test(o) {}
protected void btn_Click(object sender, EventArgs e)   
  {   
  Button btn=sender as Button;   
  RepeaterItem item =btn.NamingContainer as RepeaterItem;   
  }   
 
 

Answer 2

onfocus="test(this)"
 function test(o) {}这个是JS？onfocus是TextBox触发的吗？
不明白，我不需要用button来触发itemCommand

Answer 3

用TextBox触发ItemCommand？不知道你需要怎样触发？是点击？文本改变？keydown？keyup？说清楚点嘛

Answer 4

<asp:Repeater ID="Repeater1" runat="server" 
  onitemcommand="Repeater1_ItemCommand">
<ItemTemplate>
<%#Eval("txt") %><table>
    <tr>
        <td>
            <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true" OnTextChanged="TextBox1_TextChanged"></asp:TextBox>
        </td>
        <td>
            <asp:Button ID="Button1" runat="server" Text="Button"  />
        </td>
        <td>
            <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true"/>
        </td>
    </tr></table>
</ItemTemplate>
</asp:Repeater>
protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("id");
        dt.Columns.Add("txt");
        dt.Rows.Add("1", "1txt");
        dt.Rows.Add("2", "2txt");
        Repeater1.DataSource = dt;
        Repeater1.DataBind();
    }
}
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
    //注意这里的参数设置
    RepeaterCommandEventArgs e1 = new RepeaterCommandEventArgs(((TextBox)sender).NamingContainer as RepeaterItem,sender,new CommandEventArgs("test",null));
    Repeater1_ItemCommand(Repeater1, e1);
}
protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
{
    string ss = e.CommandName;
    if (ss == "test")
        Response.Write("123");
}

Answer 5

RepeaterCommandEventArgs e1 = new RepeaterCommandEventArgs(((TextBox)sender).NamingContainer as RepeaterItem,sender,new CommandEventArgs("test",null));
============
注意红色部分是获取repeater事件item，绿色部分是自定义事件Name，类似于delete、update等如果你怀疑事件的真实性可以：    string ss = e.CommandName;
    if (ss == "test")
       Response.Write( e.Item.ItemIndex.ToString());//输出事件行索引，发现正确

Answer 6

这样确实可以触发ItemCommand事件，但是不是我想要的我之所以想要触发ItemCommand事件，是想更新一个UpdatePannel页面代码： <table>
            <tr>
                <asp:ScriptManager ID="ScriptManager1" runat="server">
                </asp:ScriptManager>
            </tr>
            <tr>
                <asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand">
                    <ItemTemplate>
                        <%#Eval("txt") %><table>
                            <tr>
                                <td>
                                    <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true" OnTextChanged="TextBox1_TextChanged"></asp:TextBox>
                                </td>
                                <td>
                                    <asp:Button ID="Button1" runat="server" Text="Button" />
                                </td>
                                <td>
                                    <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true" />
                                </td>
                            </tr>
                        </table>
                    </ItemTemplate>
                </asp:Repeater>
            </tr>
            <tr>
                <asp:UpdatePanel ID="upl" runat="server" >
                    <ContentTemplate>
                        <asp:Label ID="lbl" runat="server" Visible="true" Text="label"></asp:Label>
                    </ContentTemplate>
                    <Triggers>
                        <asp:AsyncPostBackTrigger ControlID="Repeater1" EventName="ItemCommand" />
                    </Triggers>
                </asp:UpdatePanel>
            </tr>
        </table>
后台代码： protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                DataTable dt = new DataTable();
                dt.Columns.Add("id");
                dt.Columns.Add("txt");
                dt.Rows.Add("1", "1txt");
                dt.Rows.Add("2", "2txt");
                Repeater1.DataSource = dt;
                Repeater1.DataBind();
            }
        }        protected void TextBox1_TextChanged(object sender, EventArgs e)
        {
            //注意这里的参数设置
            RepeaterCommandEventArgs e1 = new RepeaterCommandEventArgs(((TextBox)sender).NamingContainer as RepeaterItem, sender, new CommandEventArgs("test", null));
            Repeater1_ItemCommand(Repeater1, e1);
        }
        protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            string ss = e.CommandName;
            if (ss == "test")
                Response.Write("123");
            this.lbl.Text += ss;
        }
虽然Repeater1_ItemCommand事件触发了，但是upl里面的内容并没有更新。

Answer 7

更新的逻辑需要你自己去写，难道程序还能够帮你自动完成了？那你update、delete、不还得自己写sql吗？test只是个测试，你可以把test改成update、delete==========

Answer 8

ItemComand 里面的事件怎么写啊？  我加了一个修改按钮，但是里面的事件不会写