📄 borrowbook.cs
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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
namespace 图书馆管理系统
{
/// <summary>
/// BorrowBook 的摘要说明。
/// </summary>
public class BorrowBook : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox textBox4;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.TextBox textBox5;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public BorrowBook()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <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.groupBox1 = new System.Windows.Forms.GroupBox();
this.textBox1 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.textBox5 = new System.Windows.Forms.TextBox();
this.label5 = new System.Windows.Forms.Label();
this.textBox4 = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.textBox3 = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// groupBox1
//
this.groupBox1.Controls.Add(this.textBox1);
this.groupBox1.Controls.Add(this.label1);
this.groupBox1.Location = new System.Drawing.Point(16, 8);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(328, 80);
this.groupBox1.TabIndex = 0;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "读者信息";
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(88, 40);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(88, 21);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
//
// label1
//
this.label1.Location = new System.Drawing.Point(16, 40);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(64, 23);
this.label1.TabIndex = 0;
this.label1.Text = "用户名：";
//
// groupBox2
//
this.groupBox2.Controls.Add(this.textBox5);
this.groupBox2.Controls.Add(this.label5);
this.groupBox2.Controls.Add(this.textBox4);
this.groupBox2.Controls.Add(this.label4);
this.groupBox2.Controls.Add(this.textBox3);
this.groupBox2.Controls.Add(this.label3);
this.groupBox2.Controls.Add(this.textBox2);
this.groupBox2.Controls.Add(this.label2);
this.groupBox2.Location = new System.Drawing.Point(16, 96);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(328, 192);
this.groupBox2.TabIndex = 1;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "借阅图书信息";
//
// textBox5
//
this.textBox5.Location = new System.Drawing.Point(128, 152);
this.textBox5.Name = "textBox5";
this.textBox5.Size = new System.Drawing.Size(96, 21);
this.textBox5.TabIndex = 7;
this.textBox5.Text = "";
//
// label5
//
this.label5.Location = new System.Drawing.Point(32, 160);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(72, 23);
this.label5.TabIndex = 6;
this.label5.Text = "应还日期：";
//
// textBox4
//
this.textBox4.Location = new System.Drawing.Point(128, 112);
this.textBox4.Name = "textBox4";
this.textBox4.Size = new System.Drawing.Size(96, 21);
this.textBox4.TabIndex = 5;
this.textBox4.Text = "";
//
// label4
//
this.label4.Location = new System.Drawing.Point(32, 112);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(80, 23);
this.label4.TabIndex = 4;
this.label4.Text = "借出日期：";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(128, 72);
this.textBox3.Name = "textBox3";
this.textBox3.Size = new System.Drawing.Size(96, 21);
this.textBox3.TabIndex = 3;
this.textBox3.Text = "";
//
// label3
//
this.label3.Location = new System.Drawing.Point(24, 72);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(88, 23);
this.label3.TabIndex = 2;
this.label3.Text = "书籍名称：";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(128, 32);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(96, 21);
this.textBox2.TabIndex = 1;
this.textBox2.Text = "";
//
// label2
//
this.label2.Location = new System.Drawing.Point(24, 32);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(80, 23);
this.label2.TabIndex = 0;
this.label2.Text = "书籍序列号：";
//
// button1
//
this.button1.Location = new System.Drawing.Point(56, 304);
this.button1.Name = "button1";
this.button1.TabIndex = 2;
this.button1.Text = "借阅";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(208, 304);
this.button2.Name = "button2";
this.button2.TabIndex = 3;
this.button2.Text = "取消";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// BorrowBook
//
this.AcceptButton = this.button1;
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(368, 342);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.groupBox1);
this.Name = "BorrowBook";
this.Text = "BorrowBook";
this.groupBox1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
private void button2_Click(object sender, System.EventArgs e)
{
this.Close();
}
private void button1_Click(object sender, System.EventArgs e)
{
if(textBox1.Text!="")
{
if(Exists(textBox1.Text))
{
if(Iscanborrow())
{
//SqlDataAdapter myDataAdapter = new SqlDataAdapter();
string strConn="INTEGRATED SECURITY=TRUE;Initial Catalog=Bookmanagement;Data Source=127.0.0.1";
SqlConnection myConnection=new SqlConnection(strConn);
myConnection.Open();
string cmdString="insert into BorrowedBook values('"+textBox2.Text+"','"+textBox1.Text+"','"+textBox3.Text+"','"+textBox4.Text+"','"+textBox5.Text+"')";
SqlCommand cmm=new SqlCommand(cmdString,myConnection);
cmm.ExecuteNonQuery();
cmdString="update Books set 借阅状态='已借出' where 序列号='"+textBox2.Text+"'";
cmm=new SqlCommand(cmdString,myConnection);
cmm.ExecuteNonQuery();
MessageBox.Show("借书成功！");
}
else
{
MessageBox.Show("该书已经借出！");
}
}
else
{
MessageBox.Show("用户名不存在！");
}
}
else
{
MessageBox.Show("用户名不能为空！");
}
}
private bool Iscanborrow()
{
bool result;
string strConn="INTEGRATED SECURITY=TRUE;Initial Catalog=Bookmanagement;Data Source=127.0.0.1";
SqlConnection myConnection=new SqlConnection(strConn);
myConnection.Open();
string cmdString="select * from Books where Books.借阅状态='未借出' AND 序列号='"+textBox2.Text+"'";
SqlCommand cmd=new SqlCommand(cmdString,myConnection);
SqlDataReader reader=cmd.ExecuteReader();
if(reader.Read())
{
result=true;
}
else
{
result=false;
}
reader.Close();
myConnection.Close();
return result;
}
private bool Exists(string str)
{
bool result;
string strConn="INTEGRATED SECURITY=TRUE;Initial Catalog=Bookmanagement;Data Source=127.0.0.1";
SqlConnection myConnection=new SqlConnection(strConn);
myConnection.Open();
string cmdString="select * from users where users.用户名='"+str+"'";
SqlCommand cmd=new SqlCommand(cmdString,myConnection);
SqlDataReader reader=cmd.ExecuteReader();
if(reader.Read())
{
result=true;
}
else
{
result=false;
}
reader.Close();
myConnection.Close();
return result;
}
}
}
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