格式化DataGrid的例子【将数据源中的0,1值或者逻辑值转换成实际的文字】

来源：互联网发布：安卓网络电视直播软件编辑：程序博客网时间：2024/06/06 01:00

下面的代码实现格式化DataGrid的列，也即是将数据原中的0,1值转换成实际的文字的功能，主要是在数据绑定的帮定事件。

首先准备数据源，数据源采用数据库、XML、数组等都可以。下面以XML做例子。Contacts.xml文件如下：

<?xml version="1.0" encoding="gb2312" standalone="yes"?><Contacts> <Contact> <Email>myaddress@mycompany.com</Email> <FirstName>E章</FirstName> <LastName>孟子</LastName> <Manager>0</Manager> </Contact> <Contact> <Email>youraddress@yourcompany.com</Email> <FirstName>宪会</FirstName> <LastName>孟</LastName> <Manager>1</Manager> </Contact> <Contact> <Email>mm@mmm.mm</Email> <FirstName>Lover</FirstName> <LastName>Net</LastName> <Manager>0</Manager> </Contact> <Contact> <Email>xxx@xxxx.xx</Email> <FirstName>NET开发者园地</FirstName> <LastName/> <Manager>0</Manager> </Contact> <Contact> <Email>hhh@hhh.hh</Email> <FirstName>XML开发者园地</FirstName> <LastName/> <Manager>1</Manager> </Contact></Contacts>

FormatDataGridVB.aspx

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="FormatDataGridVB.aspx.vb" Inherits="aspxWeb.FormatDataGridVB" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML> <HEAD> <meta name="GENERATOR" Content="Microsoft Visual Studio 7.0"> <meta name="CODE_LANGUAGE" Content="C#"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> </HEAD> <body> <form id="idbSample" method="post" runat="server" class="SubHeading"> </asp:Label> <br> <br> <HeaderStyle Font-Bold="True"></HeaderStyle> <Columns> <ItemTemplate> ' runat="server" ID="Label1"> </asp:Label> </ItemTemplate> </asp:TemplateColumn> </asp:BoundColumn> <HeaderStyle HorizontalAlign="Center"></HeaderStyle> <ItemStyle HorizontalAlign="Center"></ItemStyle> </asp:BoundColumn> </Columns> </asp:DataGrid> </form> </body></HTML>

FormatDataGridVB.aspx.vb

Imports SystemImports System.DataImports System.Web.UIImports System.Web.UI.WebControlsImports System.XmlPublic Class FormatDataGridVB Inherits System.Web.UI.Page Protected WithEvents FormatDataGrid As System.Web.UI.WebControls.DataGrid Protected WithEvents MyTitle As System.Web.UI.WebControls.Label#Region " Web 窗体设计器生成的代码 " '该调用是 Web 窗体设计器所必需的。 <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init 'CODEGEN: 此方法调用是 Web 窗体设计器所必需的 '不要使用代码编辑器修改它。 InitializeComponent() End Sub#End Region Private _dsContacts As DataSet Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load MyTitle.Text = "格式化DataGrid的例子【将数据原中的0,1值转换成实际的文字】" FormatDataGrid.Columns(0).HeaderText = "姓名" FormatDataGrid.Columns(1).HeaderText = "电子邮件" FormatDataGrid.Columns(2).HeaderText = "职位" ' 装载XML数据原，注意：这里与数据原类型没有关系，换成数据库也是适用的 _dsContacts = New DataSet() _dsContacts.ReadXml(Server.MapPath("Contacts.xml")) Dim dcPk As DataColumn() = {_dsContacts.Tables("Contact").Columns("Email")} _dsContacts.Tables("Contact").PrimaryKey = dcPk If Not Page.IsPostBack Then ' 只在页面首次请求时才进行数据绑定 BindContacts() End If End Sub Private Sub BindContacts() Dim dv As DataView = New DataView(_dsContacts.Tables("Contact")) dv.Sort = "LastName, FirstName" FormatDataGrid.DataSource = dv FormatDataGrid.DataBind() End Sub Protected Function FormatFullName(ByVal FirstName As Object, ByVal LastName As Object) As String ' 格式划名称列 Return CType(LastName, String) & "." & CType(FirstName, String) End Function Private Sub FormatDataGrid_ItemDataBound(ByVal sender As Object,_ ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles FormatDataGrid.ItemDataBound ' 确保处理的是数据行，而不是Header或者Footer If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then ' 得到Manager字段的值 Dim isManager As String = CType(DataBinder.Eval(e.Item.DataItem, "Manager"), String) If isManager = "1" Then ' 设定文字和背景颜色 e.Item.Cells(2).Text = "经理" e.Item.Cells(2).Style.Add("font-weight", "bold") e.Item.Cells(2).ForeColor = System.Drawing.Color.Red e.Item.BackColor = System.Drawing.Color.AliceBlue Else e.Item.Cells(2).Text = "普通员工" End If End If End SubEnd Class

C#版本

using System;using System.Collections;using System.ComponentModel;using System.Data;using System.Drawing;using System.Web;using System.Web.SessionState;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.HtmlControls;/// <summary>/// Summary description for idbSample./// </summary>public class idbSample : System.Web.UI.Page{ #region Web Form Designer generated codeoverride protected void OnInit(EventArgs e){//// CODEGEN: This call is required by the ASP.NET Web Form Designer.//InitializeComponent();base.OnInit(e);}/// <summary>/// Required method for Designer support - do not modify/// the contents of this method with the code editor./// </summary>private void InitializeComponent(){ this.dgContacts.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.dgContacts_ItemDataBound); this.Load += new System.EventHandler(this.Page_Load); }#endregion protected System.Web.UI.WebControls.DataGrid FormatDataGrid; private DataSet _dsContacts; private void Page_Load(object sender, System.EventArgs e) { // 装载XML数据原，注意：这里与数据原类型没有关系，换成数据库也是适用的 _dsContacts = new DataSet(); _dsContacts.ReadXml(Server.MapPath("Contacts.xml")); DataColumn[] dcPk = {_dsContacts.Tables["Contact"].Columns["Email"]}; _dsContacts.Tables["Contact"].PrimaryKey = dcPk; if (!Page.IsPostBack ) { BindContacts(); } } private void BindContacts() { DataView dv = new DataView(_dsContacts.Tables["Contact"]); dv.Sort = "LastName, FirstName"; dgContacts.DataSource = dv; dgContacts.DataBind(); } protected string FormatFullName(object FirstName, object LastName) { // 格式划名称列 return (string)LastName + ", " + (string)FirstName; } protected void FormatDataGrid_ItemDataBound(object source, System.Web.UI.WebControls.DataGridItemEventArgs e) { // 确保处理的是数据行，而不是Header或者Footer if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { // 得到Manager字段的值 string isManager = (string)DataBinder.Eval(e.Item.DataItem, "Manager"); if (isManager == "1") { // ' 设定文字和背景颜色 e.Item.Cells[2].Text = "经理" e.Item.Cells[2].Style.Add("font-weight", "bold") e.Item.Cells[2].ForeColor = System.Drawing.Color.Red e.Item.BackColor = System.Drawing.Color.AliceBlue } else { e.Item.Cells[2].Text = "普通员工"; } } } }