datagrid的几点简单应用 (单选,多选.属标移动到上面颜色的改变等)
Datagrid控件应该是用的很多的一种控件,下面简单写一下程序,简单说明一下其中的一些实用的功能.
关于datagrid的几点简单应用，功能包括radio的单选，checkbox的多选，鼠标移动到行上颜色变深，链接传递多参数等功能。这里radio和checkbox都使用的是HTML控件。
有关checkbox的几个功能：全部选种、取消选种、没选中操作的检测等，这几个均使用js脚本实现
testdatagrid.aspx页面代码如下:
<%@ Page language="c#" Codebehind="testdatagrid.aspx.cs" AutoEventWireup="false" Inherits="testxml.testdatagrid" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title></title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<script language="javascript">
//全部选中
function QuanXuan_Click()
{
if (document.Form1.checkboxname.length){
for (var i=0;i<document.Form1.checkboxname.length;i++){
document.Form1.checkboxname[i].checked = true;
}
}else{
document.Form1.checkboxname.checked = true;
}
}
//取消选中
function QuXiao_Click()
{
if (document.Form1.checkboxname.length){
for (var i=0;i<document.Form1.checkboxname.length;i++){
document.Form1.checkboxname[i].checked = false;
}
}else{
document.Form1.checkboxname.checked = false;
}
}
///////////////判断没有选中的返回false
function slcNo_click()
{
if (document.Form1.checkboxname.length){
for (var i=0;i<document.Form1.checkboxname.length;i++){
if(document.Form1.checkboxname[i].checked)
{
return true;
}
}
}else{
if(document.Form1.checkboxname.checked)
{
return true;
}
}
alert("请选择后再操作！");
return false;
}
//////////////////////////////////////改变行的颜色
if (!objbeforeItem)
{
var objbeforeItem=null;
var objbeforeItembackgroundColor=null;
}
function ItemOver(obj)
{
objbeforeItembackgroundColor=obj.style.backgroundColor;
obj.style.backgroundColor="#B9D1F3";
objbeforeItem=obj;
}
function ItemOut(obj)
{
if(objbeforeItem)
{
objbeforeItem.style.backgroundColor=objbeforeItembackgroundColor;
}
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<table>
<tr>
<td><FONT face="宋体"><asp:datagrid id="MyDataGrid" runat="server" Width="550px" AllowPaging="True" AutoGenerateColumns="False"
OnPageIndexChanged="MyDataGrid_Page" PageSize="5" CellPadding="2" HorizontalAlign="Left" BorderColor="Gray"
Font-Size="14px" Font-Names="新宋体">
<AlternatingItemStyle BackColor="#F2F2F2"></AlternatingItemStyle>
<ItemStyle Wrap="False" HorizontalAlign="Left" Height="22px" VerticalAlign="Middle"></ItemStyle>
<HeaderStyle Wrap="False" Height="25px" BackColor="#DEE6F6"></HeaderStyle>
<Columns>
<asp:BoundColumn Visible="False" DataField="id" SortExpression="id" HeaderText="id"></asp:BoundColumn>
<asp:TemplateColumn>
<HeaderTemplate>
选择
</HeaderTemplate>
<ItemTemplate>
<input type=radio name="RadioName" value='<%# DataBinder.Eval(Container.DataItem, "id")%>'/>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn>
<HeaderTemplate>
选择
</HeaderTemplate>
<ItemTemplate>
<INPUT type="checkbox" name="checkboxname" value='<%# DataBinder.Eval(Container.DataItem, "id")%>'>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn>
<HeaderTemplate>
模板列
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblId" Runat="server" Text=''>
</asp:Label>
<a href="abc.aspx?id=<%#DataBinder.Eval(Container.DataItem, "id") %>&name=<%#DataBinder.Eval(Container.DataItem, "name") %>" target="_blank">连接</a>
</ItemTemplate>
</asp:TemplateColumn>
<asp:HyperLinkColumn DataNavigateUrlField="id" DataNavigateUrlFormatString="aa.aspx?id={0}" DataTextField="name"
SortExpression="name" HeaderText="姓名" Target="_blank">
</asp:HyperLinkColumn>
<asp:BoundColumn DataField="card" SortExpression="card" HeaderText="身份证号" DataFormatString="{0:yyyy-MM-dd hh:mm:ss}"></asp:BoundColumn>
<asp:BoundColumn DataField="price" SortExpression="price" HeaderText="价格"></asp:BoundColumn>
<asp:BoundColumn DataField="shijian" SortExpression="shijian" HeaderText="shijian" DataFormatString="{0:yyyy年MM月dd日}"></asp:BoundColumn>
</Columns>
<PagerStyle Mode="NumericPages"></PagerStyle>
</asp:datagrid></FONT></td>
</tr>
<tr>
<td>
<asp:Button id="Button1" runat="server" Text="radio得到选择的行"></asp:Button>
<INPUT type="button" value="全部选中" onclick="QuanXuan_Click()">
<INPUT type="button" value="取消选中" onclick="QuXiao_Click()">
<asp:Button id="Button2" runat="server" Text="checkbox得到选择的行"></asp:Button>
</td>
</tr>
</table>
</form>
</body>
</HTML>
testdatagrid.aspx.cs代码如下:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Configuration;
namespace testxml
{
/// <summary>
/// testdatagrid 的摘要说明。
/// </summary>
public class testdatagrid : System.Web.UI.Page
{
protected System.Web.UI.WebControls.RadioButton RadioButton1;
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.WebControls.Button Button2;
protected System.Web.UI.WebControls.DataGrid MyDataGrid;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if (!IsPostBack)
{
BindGrid();
}
Button2.Attributes.Add("OnClick","return slcNo_click();");
}
public void MyDataGrid_Page(object sender, DataGridPageChangedEventArgs e)
{
MyDataGrid.CurrentPageIndex = e.NewPageIndex;
BindGrid();
}
private void BindGrid()
{
string strSql="";
DataSet ds = new DataSet();
strSql="Select * from testDg";
SqlConnection conn = new SqlConnection(ConfigurationSettings.AppSettings["ConnStr"]);
if (conn.State.ToString() == "Closed")
{
conn.Open();
}
SqlDataAdapter Da = new SqlDataAdapter(strSql, conn);
Da.Fill(ds, "tt");
MyDataGrid.DataSource = ds.Tables["tt"].DefaultView;
MyDataGrid.DataBind();
Da.Dispose();
if(conn.State.ToString()=="Open")
{
conn.Close();
}
conn.Dispose();
}
private void MyDataGrid_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
//配合前台脚本实现鼠标移动到每行上变颜色//配合前台脚本实现鼠标移动到每行上变颜色
#region
if(e.Item.ItemIndex>=0)
{
e.Item.Attributes.Add("onmouseover","ItemOver(this)");
e.Item.Attributes.Add("onmouseout","ItemOut(this)");
}
#endregion
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.MyDataGrid.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.MyDataGrid_ItemCreated);
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Button2.Click += new System.EventHandler(this.Button2_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
Page.Response.Write(Page.Request.Form.Get("RadioName"));
}
private void Button2_Click(object sender, System.EventArgs e)
{
string str="";
string []ckb=null;
str=Page.Request.Form.Get("checkboxname");
ckb=str.Split(new char[]{','});
;
Page.Response.Write("直接在页面中得到的值为："+str+"<br>");
Page.Response.Write("处理后存放在数组中，如下：<br>");
for(int i=0;i<ckb.Length;i++)
{
Page.Response.Write("ckb["+i+"]的值为："+ckb[i]+"<br>");
}
}
}
}