文章来源网络 属于生成html 分类 电脑编程网整理 20091114
简介:这是asp.net根据条件动态生成GridView,并动态绑定列,且可对其进行编辑的实现的详细页面,介绍了和生成html,有关的知识,加入收藏请按键盘ctrl+D,谢谢大家的观看!要查看更多有关信息,请点击此处
根 据用户需要,一个页面中,有几个不同的button,点击不同的button,可在下方同一区域产生gridview,(当然他们的gridview是不 同的)。之前用MultiView来控制,用了几个view在html中绑定了几个Gridview,然后根据点击的按钮不同,切换不同的view。但总 觉得这种方式不爽~~,html代码太多,控制起来很麻烦~!
于是就想到用这种动态的方式实现。Html中只有一个div,用来放置生成的控件,其他全部在后台实现。
有一点需要注意:如果是在html中加入的控件,页面回发前后系统都会对其状态和属性做viewstate处理,所以,回发时,根据页面生命周期:页面重 新初始化并加载控件实例,而后loadViewstate加载控件属性和状态,之后回发前控件状态重新出现。但是对于动态加载的控件,viewstate 记住了他们的属性和状态,但是并没有存储控件本身。所以回发后,控件也就不见了~
鉴于此,有多种处理办法,但是归根到底,都需要在页面回发时的初始化状态下对动态控件重新加载。我这里所做的是在page_load事件中,对其重新加载的,当然也可以在更早的事件中做。
和 "asp.net根据条件动态生成GridView,并动态绑定列,且可对其进行编辑的实现" 有关的编程小帖士: strong>Locale.PositiveCurrencyMode类提供用于指定用不同的方法代表正货币的字段。 Enum public static final class Locale.PositiveCurrencyMode extends Enum 说明 使用PositiveCurrencyMode类去判断Locale.getPositiveCurrencyMode方法的返回值并作为Locale.SetPositiveCurrencyMode方法的参数。 字段 |
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="list">
<asp:Button ID="btngv" runat="server" Text="生成GridView 1" onclick="btngv_Click" />
<asp:Button ID="Button1" runat="server" Text="生成GridView 2" onclick="Button1_Click" />
</div>
<div id="divshow" runat="server" >
<%...--在这里放置动态生成的gridview--%>
</div>
</div>
</form>
</body>
</html>
CS:
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
...{
GridView gvshow=null;
public static string sign;
protected void Page_Load(object sender, EventArgs e)
...{
if (sign != null) //根据标记符号来判断,重新绑定那个控件
...{
if (sign == "gv1")
setBind();
else
setBind2();
}
}
public void setBind()
...{
DataTable dt = getDataTable(); //获得数据源
gvshow = new GridView();
gvshow.Width = Unit.Pixel(700);
gvshow.AutoGenerateColumns = false;
gvshow.RowEditing += new GridViewEditEventHandler(gvshow_RowEditing); //添加编辑事件
gvshow.RowDeleting +=new GridViewDeleteEventHandler(gvshow_RowDeleting);
gvshow.DataSource = dt;
for (int i = 0; i < dt.Columns.Count; i++)
...{
BoundField bc = new BoundField();
bc.DataField = dt.Columns[i].ColumnName.ToString();
bc.HeaderText = dt.Columns[i].Caption.ToString();
gvshow.Columns.Add(bc);
}
CommandField cf = new CommandField();
cf.ButtonType = ButtonType.Link;
cf.ShowEditButton = true;
cf.CausesValidation = false;
gvshow.Columns.Add(cf);
CommandField cf2 = new CommandField();
cf2.ButtonType = ButtonType.Link;
cf2.ShowDeleteButton = true;
cf2.CausesValidation = false;
gvshow.Columns.Add(cf2);
gvshow.DataBind();
divshow.Controls.Add(gvshow);
}
public void setBind2()
...{
DataTable dt = getDataTable(); //获得数据源
gvshow = new GridView();
gvshow.Width = Unit.Pixel(700);
gvshow.AutoGenerateColumns = false;
gvshow.RowDeleting +=new GridViewDeleteEventHandler(gvshow_RowDeleting); //添加删除事件
gvshow.DataSource = dt;
for (int i = 0; i < dt.Columns.Count; i++)
...{
BoundField bc = new BoundField();
bc.DataField = dt.Columns[i].ColumnName.ToString();
bc.HeaderText = dt.Columns[i].Caption.ToString();
gvshow.Columns.Add(bc);
}
CommandField cf = new CommandField();
cf.ButtonType = ButtonType.Link;
cf.ShowDeleteButton = true;
cf.CausesValidation = false;
gvshow.Columns.Add(cf);
gvshow.DataBind();
divshow.Controls.Add(gvshow);
}
void gvshow_RowDeleting(object sender, GridViewDeleteEventArgs e)
...{
int i = e.RowIndex;
Response.Write("delete:" + gvshow.Rows[i].Cells[0].Text.ToString());
}
protected void btngv_Click(object sender, EventArgs e) //条件选择后,点击生成按钮,生成特定的gridview
...{
divshow.Controls.Clear();
setBind();
sign = "gv1";
}
public void gvshow_RowEditing(object sender, GridViewEditEventArgs e)
...{
int i = e.NewEditIndex;
string id = gvshow.Rows[i].Cells[0].Text.ToString();
Response.Write("you want to edit"+id);
}
public DataTable getDataTable()
...{
DAL.ISDApp01 cDal = new DAL.ISDApp01();
string sql = "select * from test";
DataTable dt = cDal.ExecuteQuery(sql).Tables[0];
return dt;
}
protected void Button1_Click(object sender, EventArgs e)
...{
divshow.Controls.Clear();
setBind2();
sign = "gv2";
}
}