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select sum(case when left(gh,1)='E' then 1 else 0 end) as 正式工,
sum(case when left(gh,1)='A' or left(gh,1)='B' then 1 else 0 end) as 派遣工
from Employees;
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:TemplateField HeaderText="序号">
<ItemTemplate>
<%#Container.DataItemIndex+1 %>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="正式工" HeaderText="正式工" ReadOnly="True" />
<asp:BoundField DataField="派遣工" HeaderText="派遣工" ReadOnly="True" />
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGridView();
}
}
/// <summary>
/// 绑定数据
/// </summary>
public void BindGridView()
{
DataSet ds = new DataSet();
using (SqlConnection con = new SqlConnection("Data Source=localhost;uid=sa;pwd=111111;Database=CSDN"))
{
con.Open();
string strSQL = "select sum(case when left(gh,1)='E' then 1 else 0 end) as 正式工,sum(case when left(gh,1)='A' or left(gh,1)='B' then 1 else 0 end) as 派遣工 from Employees";
using (SqlDataAdapter adapter = new SqlDataAdapter(strSQL, con))
{
adapter.Fill(ds);
}
}
this.GridView1.DataSource = ds;
this.GridView1.DataBind();
}
}