queryreaderhistoryform.aspx.cs

基于C#和MYSQL的图书管理系统

//文件名：QueryReaderHistoryForm.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Data.SqlClient;
public partial class QueryManage_QueryReaderHistoryForm : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string MyForbidString = Session["MyForbid"].ToString();
        if (MyForbidString.IndexOf("D9") > 1)
        {
            Server.Transfer("~/SystemManage/AllErrorHelp.aspx");
        }
    }
    private static string MySQL = "";
    private static string MyDate = "";
    protected void Button1_Click(object sender, EventArgs e)
    {//查询读者借史
        DataTable MyQueryTable = new System.Data.DataTable();
        DataTable MyReaderTable = new System.Data.DataTable();
        SqlConnection MyConnection = new SqlConnection();
        MyConnection.ConnectionString = ConfigurationManager.ConnectionStrings["MyBooksDBConnectionString"].ConnectionString;
        MyConnection.Open();
        MySQL = "Select 读者姓名 From 读者信息 WHERE 读者编号= '" + this.TextBox3.Text + "'";
        SqlDataAdapter MyAdapter = new SqlDataAdapter(MySQL, MyConnection);
        MyAdapter.Fill(MyReaderTable);
        if (MyReaderTable.Rows.Count < 1)
        {
            this.TextBox4.Text = "";
            return;
        }
        else
        {
             this.TextBox4.Text = MyReaderTable.Rows[0][0].ToString();          
             MySQL = "SELECT 图书书号,图书书名,借出日期,应还日期,归还日期,遗失图书,补充说明 FROM 借阅管理 WHERE  (借出日期 BETWEEN '" + this.TextBox1.Text  + "' AND '" + this.TextBox2.Text +
                "') AND (读者编号='" + this.TextBox3.Text + "')";
             MyDate = "读者姓名：" + MyReaderTable.Rows[0][0].ToString() +"　　　　开始日期：" + this.TextBox1.Text + "  结束日期：" + this.TextBox2.Text;
             MyAdapter = new SqlDataAdapter(MySQL, MyConnection);
             MyAdapter.Fill(MyQueryTable);
        }
        this.GridView1.DataSource = MyQueryTable;
        this.GridView1.DataBind();
        if (MyConnection.State == ConnectionState.Open)
        {
            MyConnection.Close();
        }
    }
    public string MyPrintSQL
    {//设置要传递到打印页的数据
        get
        {
            return MySQL;
        }
    }
    public String MyPrintDate
    {//设置要传递到打印页的数据
        get
        {
            return MyDate;
        }
    }
    protected void Button2_Click(object sender, EventArgs e)
    {//打印读者借史
        Server.Transfer("~/QueryManage/QueryReaderHistoryPrint.aspx");
    }
}