电子书架系统主要代码.docx
- 文档编号:18568633
- 上传时间:2023-08-19
- 格式:DOCX
- 页数:16
- 大小:16.93KB
电子书架系统主要代码.docx
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电子书架系统主要代码
全部代码
注册界面
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
usingSystem.Data.SqlClient;
namespace电子书架
{
publicpartialclassForm1:
Form
{
publicForm1()
{
InitializeComponent();
}
stringUser,Pwd;//用户名,密码
boolflagshow=false;//用来标注登录名是否存在于数据库
privatevoidbutton3_Click(objectsender,EventArgse)
{
stringstrConnect="DataSource=URUXGD0TQ3UFVG8;InitialCatalog=电子书架;PersistSecurityInfo=True;UserID=sa;Password=sa";
SqlConnectionconConnection=newSqlConnection(strConnect);
conConnection.Open();
stringcmd="select用户名,密码,邮箱from用户";
SqlCommandcom=newSqlCommand(cmd,conConnection);
SqlDataReaderreader=com.ExecuteReader();
while(reader.Read())//从数据库读取用户信息
{
User=reader["用户名"].ToString();
Pwd=reader["密码"].ToString();
if(User.Trim()==textBox1.Text&Pwd.Trim()==textBox2.Text)
{
flagshow=true;//用户名存在于数据库,则为true
}
}
reader.Close();
conConnection.Close();
if(flagshow==true)
{
showMainForm();//用户存在,返回登录界面
}
else
{
MessageBox.Show("用户不存在或密码错误!
","提示");
return;
}
}
privatevoidshowMainForm()//登录成功,显示主界面
{
Form3F3=newForm3();
F3.ShowDialog();
}
privatevoidlinkLabel1_LinkClicked(objectsender,LinkLabelLinkClickedEventArgse)
{
Form2F2=newForm2();
F2.ShowDialog();
}
privatevoidbutton4_Click(objectsender,EventArgse)
{
this.Close();
}
}
}
登陆界面
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
usingSystem.Data.SqlClient;
namespace电子书架
{
publicpartialclassForm2:
Form
{
publicForm2()
{
InitializeComponent();
}
boolflagRegister,UserFlag;//定义标志位,确认用户注册
stringstrConnect="DataSource=URUXGD0TQ3UFVG8;InitialCatalog=电子书架;PersistSecurityInfo=True;UserID=sa;Password=sa";//连接数据库字符串
privatevoidbutton4_Click(objectsender,EventArgse)
{
if((textBox1.Text.Length>=4)&&(textBox1.Text.Length<=12)&&(textBox2.Text.Length>=6)&&(textBox3.Text.Length>=6))
{
flagRegister=true;
}
else
{
if((textBox1.Text.Length<4)||(textBox1.Text.Length>12))
{
MessageBox.Show("用户名长度不在约定范围内,请重新输入!
","提示");
return;
}
if(textBox2.Text.Length<6)
{
MessageBox.Show("密码长度不足6位,请重新输入!
","提示");
return;
}
if(textBox3.Text.Length<6)
{
MessageBox.Show("请重新输入邮箱!
","提示");
return;
}
}//判断用户名条件;
if(UserFlag==true)
{
MessageBox.Show("用户已经存在,请重新输入!
");
return;
}
if(flagRegister==true)//确认用户注册后,把用户写入数据库
{
SqlConnectionconConnection=newSqlConnection(strConnect);
conConnection.Open();
stringcmd="insertinto用户(用户名,密码,邮箱)values('"+textBox1.Text+"',"+"'"+textBox2.Text+"',"+"'"+textBox3.Text+"')";
SqlCommandcom=newSqlCommand(cmd,conConnection);
com.ExecuteNonQuery();
conConnection.Close();
MessageBox.Show("注册成功!
点击确定,返回登录界面。
","提示");
this.Close();
}
Form3F3=newForm3();
F3.ShowDialog();
}
privatevoidbutton5_Click(objectsender,EventArgse)
{
this.Close();
}
}
}
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
namespace电子书架
{
publicpartialclassForm3:
Form
{
publicForm3()
{
InitializeComponent();
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
Form4F4=newForm4();
F4.ShowDialog();
}
privatevoidbutton2_Click(objectsender,EventArgse)
{
Form5F5=newForm5();
F5.ShowDialog();
}
privatevoidbutton3_Click(objectsender,EventArgse)
{
Form6F6=newForm6();
F6.ShowDialog();
}
privatevoidbutton4_Click(objectsender,EventArgse)
{
Form7F7=newForm7();
F7.ShowDialog();
}
privatevoidForm3_Load(objectsender,EventArgse)
{
}
}
}
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
namespace电子书架
{
publicpartialclassForm4:
Form
{
publicForm4()
{
InitializeComponent();
}
privatevoidbutton2_Click(objectsender,EventArgse)
{
}
privatevoidForm4_Load(objectsender,EventArgse)
{
//TODO:
这行代码将数据加载到表“电子书架DataSet3.类目表”中。
您可以根据需要移动或移除它。
this.类目表TableAdapter1.Fill(this.电子书架DataSet3.类目表);
//TODO:
这行代码将数据加载到表“电子书架DataSet1.类目表”中。
您可以根据需要移动或移除它。
this.类目表TableAdapter.Fill(this.电子书架DataSet1.类目表);
}
privatevoidtreeView1_AfterSelect(objectsender,TreeViewEventArgse)
{
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
}
privatevoidlabel2_Click(objectsender,EventArgse)
{
}
}
}
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
namespace电子书架
{
publicpartialclassForm5:
Form
{
publicForm5()
{
InitializeComponent();
}
privatevoidbutton5_Click(objectsender,EventArgse)
{
this.Close();
}
privatevoidbutton4_Click(objectsender,EventArgse)
{
MessageBox.Show("更改成功!
","提示");
}
privatevoidcomboBox1_SelectedIndexChanged(objectsender,EventArgse)
{
label1.Text=comboBox1.Text+"欢迎你";
}
privatevoidlabel1_Click(objectsender,EventArgse)
{
}
privatevoidForm5_Load(objectsender,EventArgse)
{
}
}
}
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
usingSystem.Data.SqlClient;
namespace电子书架
{
publicpartialclassForm6:
Form
{
publicForm6()
{
InitializeComponent();
}
stringstrConnect="DataSource=URUXGD0TQ3UFVG8;InitialCatalog=电子书架;PersistSecurityInfo=True;UserID=sa;Password=sa";//连接数据库字符串
privatevoidbutton2_Click(objectsender,EventArgse)
{
SqlConnectionconConnection=newSqlConnection(strConnect);
conConnection.Open();
stringcmd="insertinto类目表(类目)values('"+textBox1.Text+"')";
SqlCommandcom=newSqlCommand(cmd,conConnection);
com.ExecuteNonQuery();
conConnection.Close();
MessageBox.Show("添加成功");
this.Close();
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
SqlConnectionconConnection=newSqlConnection(strConnect);
conConnection.Open();
stringcmd="deletfrom类目表";
SqlCommandcom=newSqlCommand(cmd,conConnection);
com.ExecuteNonQuery();
conConnection.Close();
MessageBox.Show("删除成功");
this.Close();
}
}
}
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
namespace电子书架
{
publicpartialclassForm7:
Form
{
publicForm7()
{
InitializeComponent();
}
privatevoidbutton2_Click(objectsender,EventArgse)
{
Form8F8=newForm8();
F8.ShowDialog();
}
privatevoidbutton3_Click(objectsender,EventArgse)
{
Form9F9=newForm9();
F9.ShowDialog();
}
privatevoidForm7_Load(objectsender,EventArgse)
{
//TODO:
这行代码将数据加载到表“电子书架DataSet.图书表”中。
您可以根据需要移动或移除它。
this.图书表TableAdapter.Fill(this.电子书架DataSet.图书表);
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
电子书架DataSet.图书表.DefaultView.RowFilter="";
}
}
}
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
usingSystem.Data.SqlClient;
namespace电子书架
{
publicpartialclassForm8:
Form
{
publicForm8()
{
InitializeComponent();
}
stringstrConnect="DataSource=URUXGD0TQ3UFVG8;InitialCatalog=电子书架;PersistSecurityInfo=True;UserID=sa;Password=sa";//连接数据库字符串
privatevoidbutton4_Click(objectsender,EventArgse)
{
SqlConnectionconConnection=newSqlConnection(strConnect);
conConnection.Open();
stringcmd="insertinto图书表(书名,作者,出版社)values('"+textBox1.Text+"',"+"'"+textBox2.Text+"',"+"'"+textBox3.Text+"')";
SqlCommandcom=newSqlCommand(cmd,conConnection);
com.ExecuteNonQuery();
conConnection.Close();
MessageBox.Show("保存成功!
点击确定,返回登录界面。
","提示");
this.Close();
}
}
}
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
usingSystem.Data.SqlClient;
namespace电子书架
{
publicpartialclassForm9:
Form
{
publicForm9()
{
InitializeComponent();
}
stringstrConnect="DataSource=URUXGD0TQ3UFVG8;InitialCatalog=电子书架;PersistSecurityInfo=True;UserID=sa;Password=sa";//连接数据库字符串
privatevoidbutton5_Click(objectsender,EventArgse)
{
this.Close();
}
privatevoidbutton4_Click(objectsender,EventArgse)
{
SqlConnectionconConnection=newSqlConnection(strConnect);
conConnection.Open();
stringcmd="deletefrom图书表";
SqlCommandcom=newSqlCommand(cmd,conConnection);
com.ExecuteNonQuery();
conConnection.Close();
MessageBox.Show("删除成功!
点击确定,返回登录界面。
","提示");
this.Close();
}
}
}
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