这是sql server的第七、八次上机内容，抽了几天时间给做了

在原有的booksDB库中加了一个Admin表：UserName：root，PassWord：123456.

环境：Visual Studio 2010，SQL Server 2008

参考书籍：

项目结构：

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9. using System.Data.SqlClient;
  10. using System.Threading;
  11.  
  12. namespace WindowsFormsApplication2
  13. {
  14.     public partial class Login : Form
  15.     {
  16.         public Login()
  17.         {
  18.             InitializeComponent();
  19.         }
  20.  
  21.         private void label1_Click(object sender, EventArgs e)
  22.         {
  23.  
  24.         }
  25.  
  26.         private void textBox2_TextChanged(object sender, EventArgs e)
  27.         {
  28.  
  29.         }
  30.  
  31.         private void label1_Click_1(object sender, EventArgs e)
  32.         {
  33.  
  34.         }
  35.  
  36.         private void button1_Click(object sender, EventArgs e)
  37.         {
  38.             string User = UserName.Text;
  39.             string Pwd = PassWord.Text;
  40.             SqlConnection conn = new SqlConnection();
  41.             conn.ConnectionString = "server=.;database=booksDB;integrated security=True";
  42.             try
  43.             {
  44.                 conn.Open();
  45.                 SqlCommand comm = conn.CreateCommand();
  46.                 comm.CommandText = "select * from Admin where UserName='" + User + "'";
  47.                 SqlDataReader reader = comm.ExecuteReader();
  48.                 if (reader.Read())
  49.                 {
  50.                     string password = reader.GetString(reader.GetOrdinal("PassWord"));
  51.                     if (Pwd == password)
  52.                     {
  53.                         MessageBox.Show("登陆成功！");
  54.                         new Thread(() => Application.Run(new Menu())).Start();
  55.                         this.Close();
  56.                         //this.Hide();
  57.                         //Form M = new Management();
  58.                         //M.Show();
  59.                     }
  60.                     else
  61.                     {
  62.                         MessageBox.Show("密码错误！");
  63.                         UserName.Text = " ";
  64.                         PassWord.Text = " ";
  65.                     }
  66.                 }
  67.                 else
  68.                 {
  69.                     MessageBox.Show("用户不存在！");
  70.                     UserName.Text = " ";
  71.                     PassWord.Text = " ";
  72.                 }
  73.             }
  74.             catch (Exception ex)
  75.             {
  76.                 MessageBox.Show(ex.Message, "操作数据库出错");
  77.             }
  78.             finally
  79.             {
  80.                 conn.Close();
  81.             }
  82.         }
  83.     }
  84. }

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9.  
  10. namespace WindowsFormsApplication2
  11. {
  12.     public partial class Menu : Form
  13.     {
  14.         public Menu()
  15.         {
  16.             InitializeComponent();
  17.         }
  18.  
  19.         private void button1_Click(object sender, EventArgs e)
  20.         {
  21.             this.Hide();
  22.             new ReaderTypeM().Show();
  23.         }
  24.  
  25.         private void button2_Click(object sender, EventArgs e)
  26.         {
  27.             this.Hide();
  28.             new BookM().Show();
  29.         }
  30.  
  31.         private void button3_Click(object sender, EventArgs e)
  32.         {
  33.             this.Hide();
  34.             new ReaderM().Show();
  35.         }
  36.  
  37.         private void button4_Click(object sender, EventArgs e)
  38.         {
  39.             this.Hide();
  40.             new BorrowAndReturn().Show();
  41.         }
  42.  
  43.         private void Menu_Load(object sender, EventArgs e)
  44.         {
  45.  
  46.         }
  47.  
  48.         private void Out_Click(object sender, EventArgs e)
  49.         {
  50.             this.Close();
  51.         }
  52.     }
  53. }

连数据库前先用BindingSource控件绑定数据库数据。再用DataGridView控件展示数据。

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9. using System.Data.SqlClient;
  10.  
  11. namespace WindowsFormsApplication2
  12. {
  13.     public partial class ReaderTypeM : Form
  14.     {
  15.         public ReaderTypeM()
  16.         {
  17.             InitializeComponent();
  18.         }
  19.  
  20.         private void BackMenu_Click(object sender, EventArgs e)
  21.         {
  22.             this.Hide();
  23.             new Menu().Show();
  24.         }
  25.  
  26.         private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
  27.         {
  28.  
  29.         }
  30.  
  31.         private void Add_Click(object sender, EventArgs e)
  32.         {
  33.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  34.             conn.Open();
  35.             SqlCommand comm = conn.CreateCommand();
  36.             comm.CommandText = "insert into ReaderType values(@rdType,@rdTypeName,@canLendQty,@canLendDay)";
  37.             comm.Parameters.AddWithValue("@rdType", txtrdType.Text);
  38.             comm.Parameters.AddWithValue("@rdTypeName", txtrdTypeName.Text);
  39.             comm.Parameters.AddWithValue("@canLendQty", txtcanLendQty.Text);
  40.             comm.Parameters.AddWithValue("@canLendDay", txtcanLendDay.Text);
  41.             try
  42.             {
  43.                 comm.ExecuteNonQuery();
  44.                 MessageBox.Show("插入成功！");
  45.                 DataBind();
  46.             }
  47.             catch (Exception ex)
  48.             {
  49.  
  50.                 MessageBox.Show("插入失败！" + ex.Message);
  51.             }
  52.         }
  53.  
  54.         private void Search_Click(object sender, EventArgs e)
  55.         {
  56.             DataBind();
  57.         }
  58.         private void Delete_Click(object sender, EventArgs e)
  59.         {
  60.             MessageBoxButtons messButton = MessageBoxButtons.OKCancel;
  61.             DialogResult dr = MessageBox.Show("确定要删除吗?", "确定", messButton);
  62.             if (dr == DialogResult.OK)
  63.             {
  64.                 SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  65.                 conn.Open();
  66.                 SqlCommand comm = conn.CreateCommand();
  67.                 comm.CommandText = "delete from ReaderType where rdType = @rdType";
  68.                 comm.Parameters.AddWithValue("@rdType", txtrdType.Text);
  69.                 try
  70.                 {
  71.                     comm.ExecuteNonQuery();
  72.                     MessageBox.Show("删除成功！");
  73.                     DataBind();
  74.                 }
  75.                 catch (Exception ex)
  76.                 {
  77.  
  78.                     MessageBox.Show("删除失败！" + ex.Message);
  79.                 }
  80.             }
  81.         }
  82.  
  83.         private void Alter_Click(object sender, EventArgs e)
  84.         {
  85.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  86.             conn.Open();
  87.             SqlCommand comm = conn.CreateCommand();
  88.             comm.CommandText = "update ReaderType set rdType=@rdType,rdTypeName=@rdTypeName,canLendQty=@canLendQty,canLendDay=@canLendDay where rdType=@rdType";
  89.             comm.Parameters.AddWithValue("@rdType", txtrdType.Text);
  90.             comm.Parameters.AddWithValue("@rdTypeName", txtrdTypeName.Text);
  91.             comm.Parameters.AddWithValue("@canLendQty", txtcanLendQty.Text);
  92.             comm.Parameters.AddWithValue("@canLendDay", txtcanLendDay.Text);
  93.             try
  94.             {
  95.                 comm.ExecuteNonQuery();
  96.                 MessageBox.Show("更新成功！");
  97.                 DataBind();
  98.             }
  99.             catch (Exception ex)
  100.             {
  101.  
  102.                 MessageBox.Show("更新失败！" + ex.Message);
  103.             }
  104.         }
  105.         private void DataBind()
  106.         {
  107.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  108.             conn.Open();
  109.             SqlCommand comm = conn.CreateCommand();
  110.             comm.CommandText = "select rdType 类别号,rdTypeName 类别名称,canLendQty 可借数量,canLendDay 可借天数 from ReaderType";
  111.             SqlDataAdapter sda = new SqlDataAdapter(comm);
  112.             DataSet ds = new DataSet();
  113.             sda.Fill(ds);
  114.             dgvBook.DataSource = ds.Tables[];
  115.  
  116.             txtrdType.DataBindings.Clear();
  117.             txtrdTypeName.DataBindings.Clear();
  118.             txtcanLendQty.DataBindings.Clear();
  119.             txtcanLendDay.DataBindings.Clear();
  120.  
  121.             txtrdType.DataBindings.Add("Text", ds.Tables[], "类别号");
  122.             txtrdTypeName.DataBindings.Add("Text", ds.Tables[], "类别名称");
  123.             txtcanLendQty.DataBindings.Add("Text", ds.Tables[], "可借数量");
  124.             txtcanLendDay.DataBindings.Add("Text", ds.Tables[], "可借天数");
  125.             conn.Close();
  126.         }
  127.  
  128.         private void ReaderTypeM_Load(object sender, EventArgs e)
  129.         {
  130.             DataBind();
  131.         }
  132.  
  133.         private void bindingSource1_CurrentChanged(object sender, EventArgs e)
  134.         {
  135.  
  136.         }
  137.  
  138.     }
  139. }

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9. using System.Data.SqlClient;
  10.  
  11. namespace WindowsFormsApplication2
  12. {
  13.     public partial class BookM : Form
  14.     {
  15.         public BookM()
  16.         {
  17.             InitializeComponent();
  18.         }
  19.  
  20.         private void bindingSource1_CurrentChanged(object sender, EventArgs e)
  21.         {
  22.  
  23.         }
  24.  
  25.         private void BackMenu_Click(object sender, EventArgs e)
  26.         {
  27.             this.Hide();
  28.             new Menu().Show();
  29.         }
  30.  
  31.         private void Add_Click(object sender, EventArgs e)
  32.         {
  33.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  34.             conn.Open();
  35.             SqlCommand comm = conn.CreateCommand();
  36.             comm.CommandText = "insert into Book values(@bkID,@bkName,@bkAuthor,@bkPress,@bkPrice,@bkStatus)";
  37.             comm.Parameters.AddWithValue("@bkID", txtbkID.Text);
  38.             comm.Parameters.AddWithValue("@bkName", txtbkName.Text);
  39.             comm.Parameters.AddWithValue("@bkAuthor", txtbkAuthor.Text);
  40.             comm.Parameters.AddWithValue("@bkPress", txtbkPress.Text);
  41.             comm.Parameters.AddWithValue("@bkPrice", txtbkPrice.Text);
  42.             comm.Parameters.AddWithValue("@bkStatus", txtbkStatus.Text);
  43.             try
  44.             {
  45.                 comm.ExecuteNonQuery();
  46.                 MessageBox.Show("插入成功！");
  47.                 DataBind();
  48.             }
  49.             catch (Exception ex)
  50.             {
  51.  
  52.                 MessageBox.Show("插入失败！" + ex.Message);
  53.             }
  54.         }
  55.  
  56.         private void Search_Click(object sender, EventArgs e)
  57.         {
  58.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  59.             conn.Open();
  60.             SqlCommand comm = conn.CreateCommand();
  61.             comm.CommandText = "select bkID 书号,bkName 书名,bkAuthor 作者,bkPress 出版社,bkPrice 单价,bkStatus 状态 from Book where bkName like + @bkName + '%'  ";
  62.             comm.Parameters.AddWithValue("@bkName", txtbkName.Text);
  63.             SqlDataAdapter sda = new SqlDataAdapter(comm);
  64.             DataSet ds = new DataSet();
  65.             sda.Fill(ds);
  66.             dgvBook.DataSource = ds.Tables[];
  67.         }
  68.  
  69.         private void Delete_Click(object sender, EventArgs e)
  70.         {
  71.             MessageBoxButtons messButton = MessageBoxButtons.OKCancel;
  72.             DialogResult dr = MessageBox.Show("确定要删除吗?", "确定", messButton);
  73.             if (dr == DialogResult.OK)
  74.             {
  75.                 SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  76.                 conn.Open();
  77.                 SqlCommand comm = conn.CreateCommand();
  78.                 comm.CommandText = "delete from Book where bkID = @bkID";
  79.                 comm.Parameters.AddWithValue("@bkID", txtbkID.Text);
  80.                 try
  81.                 {
  82.                     comm.ExecuteNonQuery();
  83.                     MessageBox.Show("删除成功！");
  84.                     DataBind();
  85.                 }
  86.                 catch (Exception ex)
  87.                 {
  88.  
  89.                     MessageBox.Show("删除失败！" + ex.Message);
  90.                 }
  91.             }
  92.         }
  93.  
  94.         private void Alter_Click(object sender, EventArgs e)
  95.         {
  96.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  97.             conn.Open();
  98.             SqlCommand comm = conn.CreateCommand();
  99.             comm.CommandText = "update Book set bkID=@bkID,bkName=@bkName,bkAuthor=@bkAuthor,bkPress=@bkPress,bkPrice=@bkPrice,bkStatus=@bkStatus where bkID=@bkID";
  100.             comm.Parameters.AddWithValue("@bkID", txtbkID.Text);
  101.             comm.Parameters.AddWithValue("@bkName", txtbkName.Text);
  102.             comm.Parameters.AddWithValue("@bkAuthor", txtbkAuthor.Text);
  103.             comm.Parameters.AddWithValue("@bkPress", txtbkPress.Text);
  104.             comm.Parameters.AddWithValue("@bkPrice", txtbkPrice.Text);
  105.             comm.Parameters.AddWithValue("@bkStatus", txtbkStatus.Text);
  106.             try
  107.             {
  108.                 comm.ExecuteNonQuery();
  109.                 MessageBox.Show("更新成功！");
  110.                 DataBind();
  111.             }
  112.             catch (Exception ex)
  113.             {
  114.  
  115.                 MessageBox.Show("更新失败！" + ex.Message);
  116.             }
  117.         }
  118.  
  119.         private void DataBind()
  120.         {
  121.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  122.             conn.Open();
  123.             SqlCommand comm = conn.CreateCommand();
  124.             comm.CommandText = "select bkID 书号,bkName 书名,bkAuthor 作者,bkPress 出版社,bkPrice 单价,bkStatus 状态 from Book";
  125.             SqlDataAdapter sda = new SqlDataAdapter(comm);
  126.             DataSet ds = new DataSet();
  127.             sda.Fill(ds);
  128.             dgvBook.DataSource = ds.Tables[];
  129.  
  130.             txtbkID.DataBindings.Clear();
  131.             txtbkName.DataBindings.Clear();
  132.             txtbkAuthor.DataBindings.Clear();
  133.             txtbkPress.DataBindings.Clear();
  134.             txtbkPrice.DataBindings.Clear();
  135.             txtbkStatus.DataBindings.Clear();
  136.  
  137.             txtbkID.DataBindings.Add("Text", ds.Tables[], "书号");
  138.             txtbkName.DataBindings.Add("Text", ds.Tables[], "书名");
  139.             txtbkAuthor.DataBindings.Add("Text", ds.Tables[], "作者");
  140.             txtbkPress.DataBindings.Add("Text", ds.Tables[], "出版社");
  141.             txtbkPrice.DataBindings.Add("Text",ds.Tables[],"单价");
  142.             txtbkStatus.DataBindings.Add("Text",ds.Tables[],"状态");
  143.             conn.Close();
  144.         }
  145.         private void BookM_Load(object sender, EventArgs e)
  146.         {
  147.             DataBind();
  148.         }
  149.     }
  150. }

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9. using System.Data.SqlClient;
  10.  
  11. namespace WindowsFormsApplication2
  12. {
  13.     public partial class ReaderM : Form
  14.     {
  15.         public ReaderM()
  16.         {
  17.             InitializeComponent();
  18.         }
  19.  
  20.         private void BackMenu_Click(object sender, EventArgs e)
  21.         {
  22.             this.Hide();
  23.             new Menu().Show();
  24.         }
  25.  
  26.         private void Add_Click(object sender, EventArgs e)
  27.         {
  28.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  29.             conn.Open();
  30.             SqlCommand comm = conn.CreateCommand();
  31.             comm.CommandText = "insert into Reader values(@rdID,@rdType,@rdName,@rdDept,@rdQQ,@rdBorrowQty)";
  32.             comm.Parameters.AddWithValue("@rdID", txtrdID.Text);
  33.             comm.Parameters.AddWithValue("@rdType", txtrdType.Text);
  34.             comm.Parameters.AddWithValue("@rdName", txtrdName.Text);
  35.             comm.Parameters.AddWithValue("@rdDept", txtrdDept.Text);
  36.             comm.Parameters.AddWithValue("@rdQQ", txtrdQQ.Text);
  37.             comm.Parameters.AddWithValue("@rdBorrowQty", txtrdBorrowQty.Text);
  38.             try
  39.             {
  40.                 comm.ExecuteNonQuery();
  41.                 MessageBox.Show("插入成功！");
  42.                 DataBind();
  43.             }
  44.             catch (Exception ex)
  45.             {
  46.  
  47.                 MessageBox.Show("插入失败！" + ex.Message);
  48.             }
  49.         }
  50.  
  51.         private void Search_Click(object sender, EventArgs e)
  52.         {
  53.             DataBind();
  54.         }
  55.  
  56.         private void Delete_Click(object sender, EventArgs e)
  57.         {
  58.             MessageBoxButtons messButton = MessageBoxButtons.OKCancel;
  59.             DialogResult dr = MessageBox.Show("确定要删除吗?", "确定", messButton);
  60.             if (dr == DialogResult.OK)
  61.             {
  62.                 SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  63.                 conn.Open();
  64.                 SqlCommand comm = conn.CreateCommand();
  65.                 comm.CommandText = "delete from Reader where rdID = @rdID";
  66.                 comm.Parameters.AddWithValue("@rdID", txtrdID.Text);
  67.                 try
  68.                 {
  69.                     comm.ExecuteNonQuery();
  70.                     MessageBox.Show("删除成功！");
  71.                     DataBind();
  72.                 }
  73.                 catch (Exception ex)
  74.                 {
  75.  
  76.                     MessageBox.Show("删除失败！" + ex.Message);
  77.                 }
  78.             }
  79.         }
  80.  
  81.         private void Alter_Click(object sender, EventArgs e)
  82.         {
  83.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  84.             conn.Open();
  85.             SqlCommand comm = conn.CreateCommand();
  86.             comm.CommandText = "update Reader set rdID=@rdID,rdType=@rdType,rdName=@rdName,rdDept=@rdDept,rdQQ=@rdQQ,rdBorrowQty=@rdBorrowQty where rdID=@rdID";
  87.             comm.Parameters.AddWithValue("@rdID", txtrdID.Text);
  88.             comm.Parameters.AddWithValue("@rdType", txtrdType .Text);
  89.             comm.Parameters.AddWithValue("@rdName", txtrdName.Text);
  90.             comm.Parameters.AddWithValue("@rdDept", txtrdDept.Text);
  91.             comm.Parameters.AddWithValue("@rdQQ", txtrdQQ.Text);
  92.             comm.Parameters.AddWithValue("@rdBorrowQty",txtrdBorrowQty.Text);
  93.             try
  94.             {
  95.                 comm.ExecuteNonQuery();
  96.                 MessageBox.Show("更新成功！");
  97.                 DataBind();
  98.             }
  99.             catch (Exception ex)
  100.             {
  101.  
  102.                 MessageBox.Show("更新失败！" + ex.Message);
  103.             }
  104.         }
  105.  
  106.         private void DataBind()
  107.         {
  108.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  109.             conn.Open();
  110.             SqlCommand comm = conn.CreateCommand();
  111.             comm.CommandText = "select rdID 读者编号,rdType 读者类别号,rdName 读者姓名,rdDept 读者单位,rdQQ 读者QQ,rdBorrowQty 已借书数量 from Reader";
  112.             SqlDataAdapter sda = new SqlDataAdapter(comm);
  113.             DataSet ds = new DataSet();
  114.             sda.Fill(ds);
  115.             dgvReader.DataSource = ds.Tables[];
  116.  
  117.             txtrdID.DataBindings.Clear();
  118.             txtrdType.DataBindings.Clear();
  119.             txtrdName.DataBindings.Clear();
  120.             txtrdDept.DataBindings.Clear();
  121.             txtrdQQ.DataBindings.Clear();
  122.             txtrdBorrowQty.DataBindings.Clear();
  123.  
  124.             txtrdID.DataBindings.Add("Text", ds.Tables[], "读者编号");
  125.             txtrdType.DataBindings.Add("Text", ds.Tables[], "读者类别号");
  126.             txtrdName.DataBindings.Add("Text", ds.Tables[], "读者姓名");
  127.             txtrdDept.DataBindings.Add("Text", ds.Tables[], "读者单位");
  128.             txtrdQQ.DataBindings.Add("Text", ds.Tables[], "读者QQ");
  129.             txtrdBorrowQty.DataBindings.Add("Text", ds.Tables[], "已借书数量");
  130.             conn.Close();
  131.         }
  132.         private void ReaderM_Load(object sender, EventArgs e)
  133.         {
  134.             DataBind();
  135.         }
  136.  
  137.     }
  138. }

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9. using System.Data.SqlClient;
  10.  
  11. namespace WindowsFormsApplication2
  12. {
  13.     public partial class BorrowAndReturn : Form
  14.     {
  15.         public BorrowAndReturn()
  16.         {
  17.             InitializeComponent();
  18.         }
  19.  
  20.         private void BorrowBook_Click(object sender, EventArgs e)
  21.         {
  22.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  23.             conn.Open();
  24.             SqlCommand comm = conn.CreateCommand();
  25.             comm.CommandText = "exec usp_BorrowBook @rdID,@bkID";
  26.             comm.Parameters.AddWithValue("@rdID", txtrdID.Text);
  27.             comm.Parameters.AddWithValue("@bkID", txtbkID.Text);
  28.             try
  29.             {
  30.                 comm.ExecuteNonQuery();
  31.                 MessageBox.Show("借书成功！");
  32.             }
  33.             catch (Exception ex)
  34.             {
  35.  
  36.                 MessageBox.Show("借书失败！" + ex.Message);
  37.             }
  38.         }
  39.  
  40.         private void ReturnBook_Click(object sender, EventArgs e)
  41.         {
  42.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  43.             conn.Open();
  44.             SqlCommand comm = conn.CreateCommand();
  45.             comm.CommandText = "exec usp_ReturnBook @rdID,@bkID";
  46.             comm.Parameters.AddWithValue("@rdID", txtrdID.Text);
  47.             comm.Parameters.AddWithValue("@bkID", txtbkID.Text);
  48.  
  49.             try
  50.             {
  51.                 comm.ExecuteNonQuery();
  52.                 MessageBox.Show("还书成功！");
  53.             }
  54.             catch (Exception ex)
  55.             {
  56.  
  57.                 MessageBox.Show("还书失败！" + ex.Message);
  58.             }
  59.         }
  60.  
  61.         private void BorrowAndReturn_Load(object sender, EventArgs e)
  62.         {
  63.  
  64.         }
  65.  
  66.         private void BackMenu_Click(object sender, EventArgs e)
  67.         {
  68.             this.Hide();
  69.             new Menu().Show();
  70.         }
  71.  
  72.         private void Borrow_Click(object sender, EventArgs e)
  73.         {
  74.             SqlConnection conn = new SqlConnection("server=.;database=booksDB;integrated security=True");
  75.             conn.Open();
  76.             SqlCommand comm = conn.CreateCommand();
  77.             comm.CommandText = "select rdID 读者编号,bkID 书号,DateBorrow 借书日期,DateLendPlan 应还日期,DateLendAct 实际还书日期 from Borrow";
  78.             SqlDataAdapter sda = new SqlDataAdapter(comm);
  79.             DataSet ds = new DataSet();
  80.             sda.Fill(ds);
  81.             dgvBorrow.DataSource = ds.Tables[];
  82.             conn.Close();
  83.         }
  84.  
  85.     }
  86. }

源码地址：https://github.com/Vito-Yan/iCourse

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