Question

我是一个菜鸟，并尝试使用commandname和commandargument进行演示。请告诉我如何使用asp:LinkButton

创建编辑按钮

    <table>
        <asp:Repeater ID="Repeater1" runat="server" >
            <HeaderTemplate>
                <tr>
                    <th> FirstName </th>
                    <th> LastName </th>
                </tr>
            </HeaderTemplate>
            <ItemTemplate>
                <tr>
                    <td> <%# Eval("FirstName")%></td>
                    <td> <%# Eval("LastName")%></td>
                    <asp:LinkButton ID="EditButton"  runat="server" Text="Edit" CommandName="EditName" CommandArgument="EditArgument" ></asp:LinkButton>
                </tr>
            </ItemTemplate>
        </asp:Repeater>
    </table>

Answer 1

您需要为链接按钮创建一个单击事件处理程序，如下所示：

标记：

<table>
    <asp:Repeater ID="Repeater1" runat="server" >
        <HeaderTemplate>
            <tr>
                <th> FirstName </th>
                <th> LastName </th>
            </tr>
        </HeaderTemplate>
        <ItemTemplate>
            <tr>
                <td> <%# Eval("FirstName")%></td>
                <td> <%# Eval("LastName")%></td>
                <asp:LinkButton ID="EditButton"  runat="server" Text="Edit" 
                                CommandName="EditName" 
                                CommandArgument="EditArgument" 
                                OnClick="OnClickHandler" >
                </asp:LinkButton>
            </tr>
        </ItemTemplate>
    </asp:Repeater>
</table>

代码隐藏：

protected void OnClickHandler(object sender, EventArgs e)
{
    var theLinkButton = sender as LinkButton;

    // The as operator returns null if the cast fails
    // Check to see if link button exists before we try to use it
    if(theLinkButton != null)
    {
        // Check for CommandName from markup
        if(theLinkButton.CommandName = "EditName")
        {
            // Do logic here to edit name
        }

        // Other CommandName values could be handled here
    }
}

注意：如果您有其他按钮，例如Delete，那么您可以将其OnClick值指向同一方法OnClickHandler，然后传递不同的CommandName使它具有不同的值，从而为多个动作提供一个处理程序。

Answer 2

只需为您的转发器itemcommand事件添加事件处理程序

protected void Repeater_ItemCommand(object sender, RepeaterCommandEventArgs e) 
{
  if (e.CommandName == "EditName")
  {
    //TODO something
  }
}

CommandName CommandArgument试图让demo运行起来

2 个答案: