记录的添加,修改,删除等操作,??

Posted on 2006-10-23 01:05 孤峰皓月阅读(515) 评论(0) 收藏举报

前台:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DataGrid.aspx.cs" Inherits="Ado_DataGrid" %>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" >
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<head runat="server">
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<title>无标题页</title>
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</head>
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<body>
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<form id="form1" runat="server">
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<div>
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<div style="z-index: 101; left: 199px; width: 728px; position: absolute; top: 53px;
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height: 344px">
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<table border="1" cellpadding="1">
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<tr>
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<td style="width: 79px; background-color: #3399ff; height: 28px;">
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编号:</td>
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<td style="width: 174px; background-color: #3399ff; height: 28px;">
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<asp:TextBox ID="txtID" runat="server"></asp:TextBox></td>
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<td style="width: 222px; background-color: #3399ff; height: 28px;">
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<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="txtID"
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Display="Dynamic" ErrorMessage="该用户已经存在" OnServerValidate="CustomValidator1_ServerValidate"></asp:CustomValidator></td>
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</tr>
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<tr>
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<td style="width: 79px; height: 23px; background-color: #3399ff">
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姓名:</td>
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<td style="width: 174px; height: 23px; background-color: #3399ff">
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<asp:TextBox ID="txtName" runat="server"></asp:TextBox></td>
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<td style="width: 222px; height: 23px; background-color: #3399ff">
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<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtName"
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ErrorMessage="*"></asp:RequiredFieldValidator></td>
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</tr>
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<tr>
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<td style="width: 79px; height: 24px; background-color: #3399ff">
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性别:</td>
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<td style="width: 174px; height: 24px; background-color: #3399ff">
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<asp:RadioButton ID="sexNan" runat="server" GroupName="sex" Text="男" Checked="True" />
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<asp:RadioButton ID="sexNv" runat="server" GroupName="sex" Text="女" />
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</td>
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<td style="width: 222px; height: 24px; background-color: #3399ff">
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</td>
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</tr>
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<tr>
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<td style="height: 22px; background-color: #3399ff; text-align: center;" colspan="3">
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<asp:Button ID="btnAdd" runat="server" Text="添加" OnClick="btnAdd_Click" />
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<asp:Button ID="btnupdate" runat="server" OnClick="btnupdate_Click" Text="修改" />
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<asp:Button ID="btnDel" runat="server" Text="删除" />
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<asp:Button ID="btnsel" runat="server" Text="查询" /></td>
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</tr>
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</table>
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<br />
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<asp:GridView ID="GridView1" runat="server" BackColor="White" BorderColor="#CC9966"
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BorderStyle="None" BorderWidth="1px" CellPadding="4" Width="498px">
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<FooterStyle BackColor="#FFFFCC" ForeColor="#330099" />
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<RowStyle BackColor="White" ForeColor="#330099" />
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<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="#663399" />
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<PagerStyle BackColor="#FFFFCC" ForeColor="#330099" HorizontalAlign="Center" />
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<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="#FFFFCC" />
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</asp:GridView>
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</div>
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</div>
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</form>
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</body>
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</html>
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后台:

using System;
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using System.Data;
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using System.Configuration;
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using System.Collections;
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using System.Web;
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using System.Web.Security;
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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.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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public partial class Ado_DataGrid : System.Web.UI.Page
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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this.fillDg();
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}
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protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
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{
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string pID = args.Value;
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if (personOprate.findPerson(pID))
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{
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args.IsValid = false; //该用户已经存在,验证不能通过
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}
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else
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{
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args.IsValid = true; //该用户可以添加
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}
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}
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private void fillDg()
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{
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this.GridView1.DataSource = personOprate.selectAllperson();
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this.GridView1.DataBind();
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}
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protected void btnAdd_Click(object sender, EventArgs e)
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{
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if(this.IsValid)
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{
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person p = new person();
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p.pID = this.txtID.Text;
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p.pName = this.txtName.Text;
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if(this.sexNan.Checked)
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{
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p.pSex = "男";
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}
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else
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{
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p.pSex = "女";
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}
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if (personOprate.insertOprate(p))
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{
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Response.Write("插入成功!");
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this.fillDg();
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}
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else
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{
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Response.Write("<font color=red>插入失败!</font>");
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}
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}
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}
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protected void btnupdate_Click(object sender, EventArgs e)
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{
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//如果用户存在,则可以修改
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if (!this.CustomValidator1.IsValid)
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{
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person p = new person();
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p.pID = this.txtID.Text;
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p.pName = this.txtName.Text;
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if(this.sexNan.Checked)
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{
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p.pSex = "男";
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}
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else
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{
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p.pSex = "女";
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}
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if (personOprate.updateUser(p))
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{
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Response.Write("修改成功!");
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}
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else
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{
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Response.Write("修改出错!");
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}
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this.fillDg();
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}
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else
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{
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Response.Write("<font color=red>用户不存在,修改失败!</font>");
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}
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}
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}
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实体类 person.cs

using System;
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using System.Data;
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using System.Configuration;
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using System.Web;
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using System.Web.Security;
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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.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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/// <summary>
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/// person 的摘要说明
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/// 这是一个实体类,传参

.
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/// </summary>
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public class person
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{
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public string pID;
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public string pName;
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public string pSex;
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public person()
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{
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//
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// TODO: 在此处添加构造函数逻辑
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//
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}
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}
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操作类 personOperate.cs

using System;
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using System.Data;
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using System.Configuration;
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using System.Web;
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using System.Web.Security;
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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.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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using System.Data;
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using System.Data.SqlClient;
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/// <summary>
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/// personOprate 的摘要说明
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/// 操作类
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/// </summary>
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public class personOprate
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{
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public personOprate()
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{
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//
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// TODO: 在此处添加构造函数逻辑
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//
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}
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public static SqlConnection createCon()
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{
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return new SqlConnection("server=localhost;database=book;uid=sa;pwd=admin");
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}
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public static bool findPerson(string pID)
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{
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SqlConnection con = personOprate.createCon();
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con.Open();
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SqlCommand cmd = new SqlCommand("select pid from person where pid='" + pID +"'",con);
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int count = Convert.ToInt32(cmd.ExecuteScalar());
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if (count > 0)
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{
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return true; //该用户已经存在
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}
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else
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{
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return false; //该用户不存在,可以添加
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}
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}
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public static DataTable selectAllperson()
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{
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SqlConnection con = personOprate.createCon();
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SqlDataAdapter sda = new SqlDataAdapter();
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sda.SelectCommand = new SqlCommand("select * from person",con);
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DataSet ds = new DataSet();
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sda.Fill(ds,"person"); //填充数据集.填充完后,数据已经从数据库到达本地了.接下来只要返回就可以了.
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return ds.Tables["person"];
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}
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public static bool insertOprate(person p)
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{
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//使用参数
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try //只要 try 里面任何一句出错,则返回 false;
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{
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SqlConnection con = personOprate.createCon();
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con.Open();
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SqlCommand cmd = new SqlCommand("insert into person values(@pID,@pName,@pSex)", con);
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SqlParameter para = new SqlParameter("@pID", SqlDbType.VarChar, 10);
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para.Value = p.pID;
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cmd.Parameters.Add(para);
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SqlParameter para2 = new SqlParameter("pName", SqlDbType.VarChar, 20);
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para2.Value = p.pName;
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cmd.Parameters.Add(para2);
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SqlParameter para3 = new SqlParameter("pSex", SqlDbType.VarChar, 2);
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para3.Value = p.pSex;
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cmd.Parameters.Add(para3);
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cmd.ExecuteNonQuery();
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return true;
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}
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catch(Exception e) //注意 Exception e
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{
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return false;
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}
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}
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//修改用户信息
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public static bool updateUser(person p)
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{
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try
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{
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//SqlConnection con = personOprate.createCon();
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//con.Open();
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//SqlCommand cmd = new SqlCommand("update person set personName='" + p.pName + "',personSex='" + p.pSex + "' where personID='" + p.pID + "'", con);
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//cmd.ExecuteNonQuery();
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//return true;
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SqlConnection con = personOprate.createCon();
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con.Open();
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SqlCommand cmd = new SqlCommand("update person set personName='wgf',personSex='女' where personID='"+p.pID+"'",con);
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cmd.ExecuteNonQuery();
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return true;
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//SqlConnection con = personOprate.createCon();
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//con.Open();
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//SqlCommand cmd = new SqlCommand("update person set (personName,personSex) values(@pName,@pSex)",con);
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//SqlParameter para2 = new SqlParameter("pName", SqlDbType.VarChar, 20);
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//para2.Value = p.pName;
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//cmd.Parameters.Add(para2);
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//SqlParameter para3 = new SqlParameter("pSex", SqlDbType.VarChar, 2);
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//para3.Value = p.pSex;
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//cmd.Parameters.Add(para3);
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//cmd.ExecuteNonQuery();
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//return true;
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}
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catch(Exception e) //Exception e 是什么意思呢?不明白
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{
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return false;
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}
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}
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}
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表person 字段: pID,personName,personSex

这里哪里有错呢,不明白啊!!!

SqlConnection con = personOprate.createCon();
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con.Open();
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SqlCommand cmd = new SqlCommand("update person set personName='" + p.pName + "',personSex='" + p.pSex + "' where personID='" + p.pID + "'", con);
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cmd.ExecuteNonQuery();
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return true;

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记录的添加,修改,删除等操作,??