• Webfrom 生成流水号 组合查询 Repeater中单选与复选控件的使用 JS实战应用


                                            


    Default.aspx 网页界面


    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

    <!DOCTYPE html>

    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    </head>
    <body>
    <form id="form1" runat="server">
    <div>

    <asp:Label ID="Label1" runat="server" Text="流水号生成" Font-Bold="True" Font-Size="30px"></asp:Label>

    <br />
    代号:<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="生成流水号" />
    <br />
    姓名:<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
    <br />
    性别:<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
    <br />
    民族:
    <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
    &nbsp;<br />
    生日:
    <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
    <br />
    <asp:Button ID="Button2" runat="server" Text="提交" />
    <br />
    <br />

    </div>
    </form>
    </body>
    </html>

    Defaule.aspx.cs C#界面

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    public partial class _Default : System.Web.UI.Page
    {
    private MyDBDataContext _Context = new MyDBDataContext();
    protected void Page_Load(object sender, EventArgs e)
    {


    }
    protected void Button1_Click(object sender, EventArgs e)
    {
    string prefix = "p" + DateTime.Now.ToString("yyyyMMdd");
    //1查当天最大的流水号
    int maxFlow = 0;
    var query = _Context.Info.Where(p=>p.Code.StartsWith(prefix));
    if (query.Count() > 0)
    {
    query = query.OrderByDescending(p=>p.Code);//按流水号经序排列
    string maxCode = query.First().Code;//获取最大流水号
    maxFlow =Convert.ToInt32(maxCode.Substring(9));
    }

    //组合查询最新的流水号
    string flowCode = prefix + (maxFlow + 1).ToString("000");
    //显示在文本框中
    TextBox1.Text = flowCode;
    }
    }

    *********************************************************************************************

                                                                                     组合查询

    *********************************************************************************************

                           

    Default.aspx 网页界面

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

    <!DOCTYPE html>

    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    </head>
    <body>
    <form id="form1" runat="server">
    <h1>组合查询</h1>
    <div>

    车名:<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
    &nbsp; 系列:<asp:DropDownList ID="ddlBrand" runat="server" AppendDataBoundItems="True">
    <asp:ListItem Value="-1">==请选择==</asp:ListItem>
    </asp:DropDownList>
    &nbsp; 油耗:<asp:TextBox ID="txtOil" runat="server"></asp:TextBox>
    <asp:Button ID="Button1" runat="server" Text="查询" OnClick="Button1_Click" />
    <br />
    <asp:Repeater ID="Repeater1" runat="server">
    <HeaderTemplate>
    <ul>
    </HeaderTemplate>
    <ItemTemplate>
    <li>
    <%# Eval("Name") %>
    <font color="red"><%# Eval("Brand") %></font>
    <font color="blue"><%# Eval("Oil") %></font>
    </li>
    </ItemTemplate>
    <FooterTemplate>
    </ul>
    </FooterTemplate>
    </asp:Repeater>

    </div>
    </form>
    </body>
    </html>

    Defaule.aspx.cs C#界面

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    public partial class Default2 : System.Web.UI.Page
    {
    private MyDBDataContext _Context = new MyDBDataContext();
    private void FillBrand()
    {
    var query = _Context.Brand;

    ddlBrand.DataSource = query;
    ddlBrand.DataTextField = "Brand_Name";
    ddlBrand.DataValueField = "Brand_Code";
    ddlBrand.DataBind();
    }
    protected void Page_Load(object sender, EventArgs e)
    {
    if (!IsPostBack)
    {
    FillBrand();
    }
    }
    //核心代码:
    protected void Button1_Click(object sender, EventArgs e)
    {

    var query1 = _Context.Car.AsQueryable(); //根据名称查 默认情况下应当是全集
    var query2 = _Context.Car.AsQueryable();//根据系列查
    var query3 = _Context.Car.AsQueryable();//根据油耗查

    //根据输入框的填写情况来完善上面三个查询条件
    if (txtName.Text.Trim().Length > 0)
    {
    query1 = query1.Where(p => p.Name.Contains(txtName.Text));
    }
    if (ddlBrand.SelectedValue != "-1")
    {
    query2 = query2.Where(p => p.Brand == ddlBrand.SelectedValue);
    }
    if (txtOil.Text.Trim().Length > 0)
    {
    query3 = query3.Where(p => p.Oil == Convert.ToDecimal(txtOil.Text));
    }

    //三个查询条件是逻辑与的关系,可以使用集合操作的交集来实现
    var query = query1.Intersect(query2).Intersect(query3);

    //绑定显示
    Repeater1.DataSource = query;
    Repeater1.DataBind();

    }
    }

    *********************************************************************************************

                                                                       Repeater中单选与复选控件的使用        JS实战应用      

    *********************************************************************************************

    Default.aspx 网页界面

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>

    <!DOCTYPE html>

    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <script language="javascript">
    function checkAll(ckall) {
    //找所有的每一项左侧的复选框。
    var cks = document.getElementsByName("ck");
    //遍历每个复选框,把每个复选框的选中状态设置得和chkall一样
    for (var i = 0; i < cks.length; i++) {
    cks[i].checked = ckall.checked;
    }
    }
    function setCheckAll() {
    //思路:遍历所有项的复选框,判断是否全选。是全选的话,把ckall设为选中,否则把它设为不选中。
    //1.找到所有的项的复选框。
    var cks = document.getElementsByName("ck");
    //2.遍历每个复选框,记录是否被全选了。
    var selectedall = true;
    for (var i = 0; i < cks.length; i++) {
    selectedall = selectedall && cks[i].checked;
    }
    //3.根据是否被全选的状态,确定ckall的选中状态
    var ckall = document.getElementById("ckall");
    ckall.checked = selectedall;
    }
    function dodelete() {
    //1.找到所有的项的复选框。
    var cks = document.getElementsByName("ck");

    //2.判断是否有选中项
    var selecteditem = false;
    for (var i = 0; i < cks.length; i++) {
    selecteditem = cks[i].checked || selecteditem;
    }
    //3.根据选中项的情况给出不同的对话框提示
    if (selecteditem == false) {
    alert("请选择要删除的项");
    return false;
    }
    else {
    var del = confirm("确认要删除选中的项吗?");
    return del;
    }
    }
    </script>
    </head>
    <body>
    <form id="form1" runat="server">
    <div>

    <asp:Repeater ID="Repeater1" runat="server">
    <HeaderTemplate>
    <table width="100%" border="0" cellspacing="5">
    <tr>
    <td>
    <input id="ckall" name="ckall" type="checkbox" onclick="checkAll(this)" />
    </td>
    <td>名称</td>
    <td>系列</td>
    <td>厂商</td>
    <td>价格</td>
    </tr>
    </HeaderTemplate>
    <ItemTemplate>
    <tr>
    <td>
    <input id="ck_<%# Eval("Code") %>" name="ck" type="checkbox" value="<%# Eval("Code") %>" onclick="setCheckAll()" />
    </td>
    <td><%# Eval("Name") %></td>
    <td><%# Eval("BrandName") %></td>
    <td><%# Eval("ProdName") %></td>
    <td><%# Eval("Price") %></td>
    </tr>
    </ItemTemplate>
    <FooterTemplate>
    </table>
    </FooterTemplate>
    </asp:Repeater>

    </div>
    <asp:Button ID="Button1" runat="server" OnClientClick="return dodelete()" OnClick="Button1_Click" Text="删除" />
    <br />
    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
    <asp:Literal ID="Literal1" runat="server"></asp:Literal>
    </form>
    </body>
    </html>

    Defaule.aspx.cs C#界面

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    public partial class Default3 : System.Web.UI.Page
    {
    private MyDBDataContext _Context = new MyDBDataContext();
    protected void Page_Load(object sender, EventArgs e)
    {
    if (!IsPostBack)
    {
    Show();
    }
    }

    private void Show()
    {
    var query = _Context.Car;

    Repeater1.DataSource = query;
    Repeater1.DataBind();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
    if (Request["ck"] != null)
    {
    //获取选中项的主键值
    string s = Request["ck"].ToString(); //选中项的value值,使用,隔开的。
    string[] keys = s.Split(','); //劈开上面的字符串,形成主键值的数组。
    //根据上面的主键值删除数据
    foreach (string key in keys)
    {
    var query = _Context.Car.Where(p=>p.Code == key);
    if (query.Count() > 0)
    {
    Car data = query.First();
    _Context.Car.DeleteOnSubmit(data);
    _Context.SubmitChanges();
    }
    }
    //刷新显示
    Show();
    Literal1.Text = "<script language='javascript'>alert('删除成功')</script>";
    }
    }
    }

  • 相关阅读:
    linux安装uwsgi,报错问题解决
    centos7 安装 mysql
    centos7 安装 redis
    Python 第三方登录 实现QQ 微信 微博 登录
    39个前端精美后台模板
    Excel中replace函数使用方法
    Excel实用录入技巧
    Excel的快速录入
    Excel表格规范
    Excel快捷键大全 Excel2013/2010/2007/2003常用快捷键大全
  • 原文地址:https://www.cnblogs.com/981971554nb/p/4734549.html
Copyright © 2020-2023  润新知