Rez*_*dar 2 html c# asp.net webforms
我有多个html按钮,从服务器端生成一个csharp类的方法.
结果是:
<button ID='btn1' runat='server' onserverclick='btn_Click'>Apply</button>
<button ID='btn2' runat='server' onserverclick='btn_Click'>Apply</button>
<button ID='btn3' runat='server' onserverclick='btn_Click'>Apply</button>
...
<button ID='btnN' runat='server' onserverclick='btn_Click'>Apply</button>
我还将btn_Click事件添加到后面的代码中:
protected void btn_Click (object sender, EventArgs e)
{
string id = (sender as Control).ClientID;
msg = id;
}
你可以看到我想得到buttonId,但当我点击任何按钮时,btn_Click将不会调用,我无法获得buttonId.
我使用的是带有c#4.0的asp.net网站.
问题是我需要使用服务器端生成按钮,而runat属性不能与我的方法一起使用.我该如何解决这个问题？
这是生成按钮的方法体
for (int i = 0; i < dt.Rows.Count; i++)
{
DateTime dtTemp = DateTime.Parse(dt.Rows[i]["messageDate"].ToString());
if (dt.Rows[i]["isRead"].ToString() == "True")
readed = "MessageReaded";
else
readed = "MessageNew";
post += "<div class='modal fade' id='myModal" + dt.Rows[i]["messageId"].ToString() + "' tabindex='-1' role='dialog' aria-labelledby='myModalLabel'>"
+ "<div class='modal-dialog' role='document'>"
+ "<div class='modal-content'>"
+ "<div class='modal-header'><button type='button' class='close' data-dismiss='modal' aria-label='Close'><span aria-hidden='true'>×</span></button><h4 class='modal-title' id='myModalLabel'><span style='font-weight:bold'>subject</span> : " + dt.Rows[i]["subject"].ToString() + "</h4></div>"
+ "<div class='modal-header'><p><span style='font-weight:bold'>date</span> : " + dtTemp.ToString("yyyy/MM/dd") + "</p>"
+ "<p><span style='font-weight:bold'>Time</span> : " + dt.Rows[i]["messageTime"].ToString() + "</p>"
+ "<p><span style='font-weight:bold'>email</span> : " + dt.Rows[i]["email"].ToString() + "</p></div>"
+ "<div class='modal-body'>" + dt.Rows[i]["message"].ToString() + "</div>"
+ "<div class='modal-footer'><button type='button' class='btn btn-default' data-dismiss='modal'>close</button>"
+ "<button ID='btn" + dt.Rows[i]["messageId"].ToString() + "' class='btn btn-danger' onclick='DeleteMessage_Click'>Delete</button></div>"
+ "</div></div></div>";
string narrow = Special.TimeToNarrow(dt.Rows[i]["messageDate"].ToString(), dt.Rows[i]["messageTime"].ToString());
post += "<a data-toggle='modal' data-target='#myModal" + dt.Rows[i]["messageId"].ToString() + "' href='#' class='list-group-item " + readed + "'><span class='badge'>" + narrow + "</span><i class='fa fa-fw fa-comment'></i> <span>"
+ dt.Rows[i]["name"].ToString() + "</span> : <span>" + dt.Rows[i]["subject"].ToString() + "</span></a>";
}
所以问题就出现了
<button ID='btn" + dt.Rows[i]["messageId"].ToString() + "' runat='server' class='btn btn-danger' onserverclick='DeleteMessage_Click'>Delete</button>
编辑我的帖子:你可以看到我不能使用asp:按钮,因为使用bootstrap模式.如果您认为我仍然可以使用asp:button,请编写代码并告诉我如何.谢谢
onserverclick在asp中没有.您应该添加asp:Button标记而不是仅仅Button而不是onserverclick公正OnClick
就像是:
<asp:Button ID='btn1' runat='server' Text="Apply" OnClick='btn_Click'/>
编辑 按钮生成方法应如下所示:
for (int i = 0; i < dt.Rows.Count; i++){
<div class='modal fade' id='myModal" + dt.Rows[i]["Id"].ToString() + "' tabindex='-1' role='dialog' aria-labelledby='myModalLabel'>
<div class='modal-dialog' role='document'>
<div class='modal-content'>
<div class='modal-header'><button type='button' class='close' data-dismiss='modal' aria-label='Close'><span aria-hidden='true'>×</span></button><h4 class='modal-title' id='myModalLabel'><span style='font-weight:bold'>subject</span> :subject</h4></div>
<div class='modal-header'><p><span style='font-weight:bold'>Date</span> : yyyy/MM/dd</p>
<p><span style='font-weight:bold'>Time</span>messageTime</p>
<p><span style='font-weight:bold'>Email</span>email</p>
</div>
<div class='modal-body'>message</div>
<div class='modal-footer'>
<button type='button' class='btn btn-default' data-dismiss='modal'>close</button>
<asp:Button ID='btn" + dt.Rows[i]["messageId"].ToString() + "' runat='server' class='btn btn-danger' OnClick='DeleteMessage_Click'>Delete</button>
</div>
</div>
</div>
你可以在这一行看到:<button ID='btn" + dt.Rows[i]["messageId"].ToString() + "' runat='server' class='btn btn-danger' onserverclick='DeleteMessage_Click'>Delete</button>我已经改变了buttonwith asp:Button和onserverclickwith OnClick.
正如其他人所说,问题是runat="server"当您将控件生成为HTML字符串时,ASP.NET无法识别.
你的代码可能应该以一种完全不同的方式完成,但是如果你想要改变你已经完成的工作,你可以做一些不同的事情.
而不是runat="server"按钮,让他们提交按钮并为其分配名称和值,例如......
而不是这个:
<button ID='btn1' runat='server' onserverclick='btn_Click'>Apply</button>
<button ID='btn2' runat='server' onserverclick='btn_Click'>Apply</button>
<button ID='btn3' runat='server' onserverclick='btn_Click'>Apply</button>
这样做(注意它们都有相同的名字):
<button name="btn" type="submit" value="1">Apply</button>
<button name="btn" type="submit" value="2">Apply</button>
<button name="btn" type="submit" value="3">Apply</button>
然后在Page_Load事件中,您可以检测是否单击了其中一个按钮并显示以下内容:
if (Page.IsPostBack)
{
if (Request.Form["btn"] != null)
{
//A btn was clicked, get it's value
int btn = int.Parse(Request.Form["btn"]);
//Do something with this btn number
}
}
这是一个包含三个按钮的小样本,显示单击按钮的编号:
Test.aspx文件
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs" Inherits="Test" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<button name="btn" type="submit" value="1">Apply</button>
<button name="btn" type="submit" value="2">Apply</button>
<button name="btn" type="submit" value="3">Apply</button>
</form>
</body>
</html>
test.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Test : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack)
{
if (Request.Form["btn"] != null)
{
int btn = int.Parse(Request.Form["btn"]);
Response.Write(btn);
}
}
}
}