DataGrid中的高级ToolTip

2005-12-26 08:38 努力学习的小熊阅读(2819) 评论(2) 编辑收藏举报

        实现的效果是由于单条记录需要了解的信息过多使DataGrid中摆放不下时的解决方案，首先将记录的一部分信息进行分类将重要的信息进行保留显示，将相关信息列隐藏掉，在鼠标移动到DataGrid中相应的记录中时，会出现一个跟随鼠标的ToolTip将相关信息显示在其中。
        实现原理是在HTML中隐藏一个放在DIV标签中的Table，然后在分别通过鼠标的onmouseover和onmouseout事件实现在鼠标移动到不同的记录时显示不同记录的ToolTip信息，通过onmousemove事件实现ToolTip的跟随事件。
        代码如下：
HTML

<%@ Page language="c#" Codebehind="DataGrid中的高级ToolTip.aspx.cs" AutoEventWireup="false" Inherits="CSDNTech.DataGrid中的高级ToolTip" %>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
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<HTML>
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<HEAD>
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<title>DataGrid中的高级ToolTip</title>
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.transparent { BORDER-RIGHT: indianred 1px solid; BORDER-TOP: indianred 1px solid; DISPLAY: none; FILTER: alpha(opacity=85); BORDER-LEFT: indianred 1px solid; BORDER-BOTTOM: indianred 1px solid; POSITION: absolute; BACKGROUND-COLOR: infobackground }
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</style>
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function Show(Country, City, Address, PostalCode, Phone, Fax)
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{
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document.getElementById("td1").innerText="国家："+Country;
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document.getElementById("td2").innerText="城市："+City;
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document.getElementById("td3").innerText="地址："+Address;
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document.getElementById("td4").innerText="邮政编码："+PostalCode;
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document.getElementById("td5").innerText="电话："+Phone;
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document.getElementById("td6").innerText="传真："+Fax;
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//获得鼠标的X轴的坐标
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x = event.clientX + document.body.scrollLeft;
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//获得鼠标的Y轴的坐标
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y = event.clientY + document.body.scrollTop + 20;
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//显示弹出窗体
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Popup.style.display="block";
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//设置窗体的X,Y轴的坐标
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Popup.style.left = x;
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Popup.style.top = y;
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}
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//隐藏弹出窗体
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function Hide()
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{
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//隐藏窗体
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Popup.style.display="none";
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}
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</script>
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</HEAD>
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<body>
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<form id="Form1" method="post" runat="server">
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<TABLE id="Table1" cellSpacing="3" cellPadding="3" width="300" border="0">
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<TR>
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<TD>
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<asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" AllowPaging="True">
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<Columns>
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<asp:BoundColumn DataField="CustomerID" HeaderText="CustomerID"></asp:BoundColumn>
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<asp:BoundColumn DataField="CompanyName" HeaderText="CompanyName"></asp:BoundColumn>
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<asp:BoundColumn DataField="ContactTitle" HeaderText="ContactTitle"></asp:BoundColumn>
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<asp:BoundColumn DataField="Address" HeaderText="Address"></asp:BoundColumn>
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<asp:BoundColumn DataField="City" HeaderText="City"></asp:BoundColumn>
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<asp:BoundColumn DataField="PostalCode" HeaderText="PostalCode"></asp:BoundColumn>
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<asp:BoundColumn DataField="Country" HeaderText="Country"></asp:BoundColumn>
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<asp:BoundColumn DataField="Phone" HeaderText="Phone"></asp:BoundColumn>
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<asp:BoundColumn DataField="Fax" HeaderText="Fax"></asp:BoundColumn>
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</Columns>
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<PagerStyle Mode="NumericPages">
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</PagerStyle>
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</asp:DataGrid></TD>
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</TR>
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<TR>
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<TD>
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<div id="Popup" class="transparent" style=" Z-INDEX: 200">
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<table border="0" cellpadding="0" style="FONT-SIZE: x-small">
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<tr>
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<td valign="middle" bgcolor="indianred"><font color="white">联系方式</font></td>
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</tr>
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<tr>
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<td id="td1"></td>
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</tr>
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<tr>
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<td id="td2"></td>
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</tr>
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<tr>
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<td id="td3"></td>
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</tr>
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<tr>
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<td id="td4"></td>
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</tr>
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<tr>
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<td id="td5"></td>
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</tr>
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<tr>
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<td id="td6"></td>
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</tr>
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</table>
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</div>
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</TD>
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</TR>
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<TR>
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<TD></TD>
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</TR>
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</TABLE>
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</form>
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</body>
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</HTML>

using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Data;
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using System.Data.SqlClient;
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using System.Drawing;
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using System.Web;
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using System.Web.SessionState;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.UI.HtmlControls;
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using System.Configuration;
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namespace CSDNTech
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{
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/// <summary>
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/// DataGrid中的高级ToolTip 的摘要说明。
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/// </summary>
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public class DataGrid中的高级ToolTip : System.Web.UI.Page
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{
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protected System.Web.UI.WebControls.DataGrid DataGrid1;
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protected string Conn = ConfigurationSettings.AppSettings["DBConn"];
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private DataTable dt;
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private void Page_Load(object sender, System.EventArgs e)
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{
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// 在此处放置用户代码以初始化页面
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this.Format_DataGrid();
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}
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private void Format_DataGrid()
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{
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SqlConnection cn = new SqlConnection(Conn);
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cn.Open();
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try
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{
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SqlCommand com = new SqlCommand("select Top 16 CustomerID, CompanyName, ContactTitle,Country, City, Address,PostalCode,Phone,Fax from Customers",cn);
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SqlDataAdapter adp = new SqlDataAdapter(com);
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dt = new DataTable();
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adp.Fill(dt);
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this.DataGrid1.DataSource = dt;
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this.DataGrid1.DataBind();
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}
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finally
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{
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cn.Close();
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}
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}
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Web 窗体设计器生成的代码
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private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
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{
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if(e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
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{
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e.Item.Attributes.Add("onmouseover", "this.oldcolor=this.style.backgroundColor;this.style.backgroundColor='#C8F7FF';");
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e.Item.Attributes.Add("onmousemove", "Show('"+dt.Rows[e.Item.ItemIndex]["country"].ToString()+"','"
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+dt.Rows[e.Item.ItemIndex]["City"].ToString()+"','"
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+dt.Rows[e.Item.ItemIndex]["Address"].ToString()+"','"
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+dt.Rows[e.Item.ItemIndex]["PostalCode"].ToString()+"','"
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+dt.Rows[e.Item.ItemIndex]["Phone"].ToString()+"','"
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+dt.Rows[e.Item.ItemIndex]["Fax"].ToString()+"');");
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e.Item.Attributes.Add("onmouseout",
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"this.style.backgroundColor=this.oldcolor;Hide();");
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}
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}
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}
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}

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DataGrid中的高级ToolTip

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