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<1> TableDataField.aspx
<%...@ Page language="c#" Codebehind="TableDataField.aspx.cs" AutoEventWireup="false" Inherits="ScuHR.TableSet.TableDataField" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>TableDataFiled</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">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<TABLE id="Table1" style="Z-INDEX: 101; LEFT: 56px; WIDTH: 680px; POSITION: absolute; TOP: 32px; HEIGHT: 75px"
cellSpacing="1" cellPadding="1" width="680" border="1">
<TR>
<TD style="WIDTH: 21px"><FONT face="宋体"></FONT></TD>
<TD style="WIDTH: 621px"></TD>
<TD></TD>
</TR>
<TR>
<TD style="WIDTH: 21px"></TD>
<TD style="WIDTH: 621px">
<asp:PlaceHolder id="plhDataFields" runat="server"></asp:PlaceHolder></TD>
<TD></TD>
</TR>
<TR>
<TD style="WIDTH: 21px"></TD>
<TD style="WIDTH: 621px"></TD>
<TD></TD>
</TR>
<TR>
<TD style="WIDTH: 21px"></TD>
<TD style="WIDTH: 621px">
<asp:Button id="btnAadd" runat="server" Text="增加"></asp:Button></TD>
<TD></TD>
</TR>
<TR>
<TD style="WIDTH: 21px"></TD>
<TD style="WIDTH: 621px"><FONT face="宋体">
<asp:Button id="btnGetValue" runat="server" Text="获得属性值"></asp:Button></FONT></TD>
<TD></TD>
</TR>
</TABLE>
</form>
</body>
</HTML>
<2>TableDataField.aspx .cs
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;
namespace ScuHR.TableSet
...{
/**//// <summary>
/// TableDataFiled 的摘要说明。
/// </summary>
///
public class TableDataField : System.Web.UI.Page
...{
protected System.Web.UI.WebControls.Button btnAadd;
protected System.Web.UI.WebControls.PlaceHolder plhDataFields;
protected System.Web.UI.WebControls.Button btnGetValue;
private void Page_Load(object sender, System.EventArgs e)
...{
if (! IsPostBack )
...{
//跟踪用户控件状态值
ViewState[ "DataFieldCount" ] = 0;
}
else
...{
for ( int counter = 0 ; counter < (int)ViewState ["DataFieldCount"]; counter++)
...{
AddDataField( counter.ToString() );
}
}
}
Web 窗体设计器生成的代码#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.btnAadd.Click += new System.EventHandler(this.btnAadd_Click);
this.btnGetValue.Click += new System.EventHandler(this.btnGetValue_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void btnAadd_Click(object sender, System.EventArgs e)
...{
ViewState[ "DataFieldCount" ] = (int)ViewState[ "DataFieldCount" ] + 1;
AddDataField( ViewState[ "DataFieldCount" ].ToString() );
}
/**//// <summary>
/// 通过用户控件来增加动态控件
/// </summary>
/// <param name="strFieldNum"></param>
private void AddDataField(string strFieldNum)
...{
//获得用户控件
WebUserControlCls webUserCtrl = (WebUserControlCls)Page.LoadControl("WebUserControlCls.ascx");
//将用户控件增加到PlaceHolder中
this.plhDataFields.Controls.Add(webUserCtrl);
//对用户控件的按钮注册动态事件
webUserCtrl.btnDelRow.Attributes.Add("onclick", "return confirm(’确定要删除该字段吗?’);");
webUserCtrl.btnDelRow.Click +=new EventHandler(btnDelRow_Click);
//对PlaceHolder中的所有用户控件来设置ID属性,目的是为了点击用户控件中的"删除"按钮删除该用户控件
setControlsID();
}
/**//// <summary>
/// 删除所选择的那行用户控件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnDelRow_Click(object sender, System.EventArgs e)
...{
//
ViewState[ "DataFieldCount" ] = (int)ViewState[ "DataFieldCount" ] - 1;
Button btnDel = (Button)sender;
WebUserControlCls webUserCtrl = new WebUserControlCls();
webUserCtrl.ID = btnDel.ID;
this.plhDataFields.Controls.Remove(this.plhDataFields.FindControl(webUserCtrl.ID));
//对PlaceHolder中的所有用户控件来重新设置ID属性
setControlsID();
}
/**//// <summary>
/// 获得所有用户控件中的值
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnGetValue_Click(object sender, System.EventArgs e)
...{
if(ViewState["DataFieldCount"]!=null)
...{
foreach(WebUserControlCls webUserCtrl in this.plhDataFields.Controls)
...{
Response.Write(webUserCtrl.DataFieldName);
Response.Write(webUserCtrl.LogicName);
Response.Write(webUserCtrl.DataFieldType);
Response.Write(webUserCtrl.TypeLength);
Response.Write("<br>");
}
}
}
/**//// <summary>
/// 对PlaceHolder中的所有用户控件来设置ID属性
/// </summary>
private void setControlsID()
...{
int i=1;
//将用户控件与其按钮设置为相同的ID
foreach(WebUserControlCls wc in this.plhDataFields.Controls)
...{
wc.ID = i.ToString();
wc.btnDelRow.ID =i.ToString();
i++;
}
}
}
}
<3>WebUserControlCls.ascx
<%...@ Control Language="c#" AutoEventWireup="false" codebehind="WebUserControlCls.ascx.cs" Inherits="ScuHR.TableSet.WebUserControlCls" TargetSchema="http://schemas.microsoft.com/intellisense/ie5"%>
<TABLE id="Table1" style="WIDTH: 746px; HEIGHT: 30px" cellSpacing="0" cellPadding="0" width="746"
border="1">
<TR>
<TD>物理名称：</TD>
<TD><FONT face="宋体"><asp:textbox id="txtDataFieldName" runat="server" CssClass="textbox" MaxLength="20" Width="117"
Height="24"></asp:textbox></FONT></TD>
<TD><FONT face="宋体">逻辑名称</FONT></TD>
<TD style="WIDTH: 119px"><asp:textbox id="txtLogicName" runat="server" CssClass="textbox" MaxLength="20" Width="117px"
Height="24px"></asp:textbox></TD>
<TD style="WIDTH: 75px"><FONT face="宋体">字段属性:</FONT></TD>
<TD style="WIDTH: 87px"><FONT face="宋体"><asp:dropdownlist id="dropDataType" runat="server">
<asp:ListItem Value="0">字符类型</asp:ListItem>
<asp:ListItem Value="1">数字类型</asp:ListItem>
</asp:dropdownlist></FONT></TD>
<TD><FONT face="宋体">属性长度:</FONT></TD>
<TD style="WIDTH: 40px"><FONT face="宋体"><asp:textbox id="txtTypeLength" runat="server" Width="36px" Height="23px">30</asp:textbox></FONT></TD>
<TD><FONT face="宋体"><FONT face="宋体"><asp:button id="btnDelRow" Text="删除" runat="server"></asp:button></FONT></FONT></TD>
</TR>
</TABLE>
<4>WebUserControlCls.ascx .cs
namespace ScuHR.TableSet
...{
using System;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Text.RegularExpressions; //使用正则表达式
/**//// <summary>
/// WebUserControl 的摘要说明。
/// </summary>
public class WebUserControlCls : System.Web.UI.UserControl
...{
public System.Web.UI.WebControls.Button btnDelRow;//注意,应该是public
protected System.Web.UI.WebControls.DropDownList dropDataType;
protected System.Web.UI.WebControls.TextBox txtLogicName;
protected System.Web.UI.WebControls.TextBox txtDataFieldName;
protected System.Web.UI.WebControls.TextBox txtTypeLength;
private void Page_Load(object sender, System.EventArgs e)
...{
// 在此处放置用户代码以初始化页面
}
/**//// <summary>
/// 物理名称,只读属性
/// </summary>
public string DataFieldName
...{
get
...{
return txtDataFieldName.Text.Trim();
}
}
/**//// <summary>
/// 逻辑名称,只读属性
/// </summary>
public string LogicName
...{
get
...{
return txtLogicName.Text.Trim();
}
}
/**//// <summary>
/// 数据类型,0表示是字符串类型,1表示是数字类型
/// </summary>
public int DataFieldType
...{
get
...{
return Int32.Parse(dropDataType.SelectedValue);
}
}
public int TypeLength
...{
get
...{
//使用正则表达式判断字符串是否为数字
//是数字则返回该数字的值
//不是则返回-1
Regex r = new Regex(@"^d+$");
if(r.IsMatch(txtTypeLength.Text.Trim()))
...{
return Int32.Parse(txtTypeLength.Text);
}
else
...{
return -1;
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