C# 图书管理系统源码下载(三层架构)

附件数据库后需修改 数据库连接串为本地数据库的密码（在DAL/DBHelper.cs中修改即可），vs2017已测试通过登录默认用户名：admin；默认密码：admin





using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace LoginFrame{ public partial class FrmQueryBook : Form { public FrmQueryBook() { InitializeComponent(); } private void dtp_publishDate_ValueChanged(object sender, EventArgs e) { this.txt_publishDate.Text = this.dtp_publishDate.Value.ToShortDateString(); } private void txt_publishDate_DoubleClick(object sender, EventArgs e) { this.txt_publishDate.Text = ""; } private void Btn_Query_Click(object sender, EventArgs e) { string sqlstr = " where 1=1 "; if (this.txt_bookName.Text != "") { sqlstr = " and bookName like '%" this.txt_bookName.Text "%'"; } if (this.cb_bookType.SelectedValue.ToString() != "0") { sqlstr = " and bookType=" this.cb_bookType.SelectedValue.ToString(); } if (this.txt_barcode.Text != "") { sqlstr = " and barcode like '%" this.txt_barcode.Text "%'"; } if (this.txt_publishDate.Text != "") { sqlstr = " and convert(char(11),publishDate,20) ='" this.txt_publishDate.Text "'"; } HWhere.Text = sqlstr; BindData(""); } public void BindData(string strClass) { int DataCount = 0; int NowPage = 1; int AllPage = 0; int PageSize = Convert.ToInt32(HPageSize.Text); switch (strClass) { case "next": NowPage = Convert.ToInt32(HNowPage.Text) 1; break; case "up": NowPage = Convert.ToInt32(HNowPage.Text) - 1; break; case "end": NowPage = Convert.ToInt32(HAllPage.Text); break; case "refresh": NowPage = Convert.ToInt32(HNowPage.Text); break; default: break; } DataTable dsLog = BLL.bllBook.GetBook(NowPage, PageSize, out AllPage, out DataCount, HWhere.Text); if (dsLog.Rows.Count == 0 || AllPage == 1) { LBEnd.Enabled = false; LBHome.Enabled = false; LBNext.Enabled = false; LBUp.Enabled = false; } else if (NowPage == 1) { LBHome.Enabled = false; LBUp.Enabled = false; LBNext.Enabled = true; LBEnd.Enabled = true; } else if (NowPage == AllPage) { LBHome.Enabled = true; LBUp.Enabled = true; LBNext.Enabled = false; LBEnd.Enabled = false; } else { LBEnd.Enabled = true; LBHome.Enabled = true; LBNext.Enabled = true; LBUp.Enabled = true; } this.dataGridView_Book.DataSource = dsLog.DefaultView; PageMes.Text = string.Format("[每页{0}条 第{1}页／共{2}页 共{3}条]", PageSize, NowPage, AllPage, DataCount); HNowPage.Text = Convert.ToString(NowPage ); HAllPage.Text = AllPage.ToString(); if (dsLog.Rows.Count > 0) { this.Btn_Update.Enabled = true; this.Btn_Del.Enabled = true; } else { this.Btn_Update.Enabled = false; this.Btn_Del.Enabled = false; } } /*开始加载窗体后*/ private void FrmQueryBook_Load(object sender, EventArgs e) { //查询所有的图书类别 DataSet bookTypeDs = BLL.bllBookType.getAllBookType(); DataTable newDataTable = new DataTable(); newDataTable.Columns.Add("bookTypeId"); newDataTable.Columns.Add("bookTypeName"); foreach (DataRow oldDR in bookTypeDs.Tables[0].Rows) { DataRow newDR = newDataTable.NewRow(); newDR[0] = oldDR["bookTypeId"].ToString(); newDR[1] = oldDR["bookTypeName"].ToString(); newDataTable.Rows.InsertAt(newDR, newDataTable.Rows.Count); } // Add your 'Select an item' option at the top DataRow dr = newDataTable.NewRow(); dr[0] = "0"; dr[1] = "请选择"; newDataTable.Rows.InsertAt(dr, 0); this.cb_bookType.DataSource = newDataTable; this.cb_bookType.DisplayMember = "bookTypeName"; this.cb_bookType.ValueMember = "bookTypeId"; } private void LBHome_Click(object sender, EventArgs e) { BindData(""); } private void LBUp_Click(object sender, EventArgs e) { BindData("up"); } private void LBNext_Click(object sender, EventArgs e) { BindData("next"); } private void LBEnd_Click(object sender, EventArgs e) { BindData("end"); } private void Btn_Update_Click(object sender, EventArgs e) { if (((System.Windows.Forms.BaseCollection)(dataGridView_Book.SelectedRows)).Count != 1) { MessageBox.Show("请选择一条数据", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); } else { String barcode = this.dataGridView_Book.CurrentRow.Cells[0].Value.ToString(); FrmEditBook frmEditBook = new FrmEditBook(barcode,this); frmEditBook.ShowDialog(); } } private void Btn_Del_Click(object sender, EventArgs e) { if (((System.Windows.Forms.BaseCollection)(dataGridView_Book.SelectedRows)).Count != 1) { MessageBox.Show("请选择一条数据", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); } else { if ( MessageBox.Show("确定删除吗?", "删除提示", MessageBoxButtons.OKCancel) == DialogResult.OK) { String barcode = this.dataGridView_Book.CurrentRow.Cells[0].Value.ToString(); if (BLL.bllBook.DelBook(barcode)) MessageBox.Show("图书删除成功!"); else MessageBox.Show("图书删除失败!"); BindData("refresh"); } } } }}