C#_ member Management System: Development Five (user registration)

Create a new user registration form (VIPRegistration.cs):

The user registration Form (VIPRegistration.cs) detailed code is as follows:

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.ComponentModel;4 usingSystem.Data;5 usingSystem.Drawing;6 usingSystem.Linq;7 usingSystem.Text;8 usingSystem.Threading.Tasks;9 usingSystem.Windows.Forms;Ten usingSystem.Data.SqlClient; One usingSystem.Configuration; A  - namespacemember Management System - { the      Public Partial classVipregistration:form -     { -          Publicvipregistration () -         { + InitializeComponent (); -         } +  A  at         //Submit Button -         Private voidBtnok_click (Objectsender, EventArgs e) -         { -              -             stringConnStr = configurationmanager.connectionstrings["Str"]. ConnectionString; -SqlConnection conn =NewSqlConnection (CONNSTR); in             stringsql =string. Format ("Select vUserName from Vipaccount where Vusername= ' {0} '", txtName.Text); -SqlCommand cmd =NewSqlCommand (SQL, conn); to Conn. Open (); +SqlDataReader sda=cmd. ExecuteReader (); -  the             if(TxtName.Text.Trim () = ="") *             { $lblname.text="user name cannot be empty";Panax Notoginseng                 return; -             } the             Else if(TxtPwd.Text.Trim () = =""|| TxtPwdConfirm.Text.Trim () = ="") +             { ALblpwd.text ="The password cannot be empty"; the                 return; +             } -             Else if(TxtPwdConfirm.Text.Trim ()! =TxtPwd.Text.Trim ()) $             { $Lblpwdconfirm.text ="two times the password input is different, please confirm and then lose"; -                 return; -             } the             Else if(SDA. Read ()) -             {WuyiLblname.text ="user name already exists, please re-enter"; the                 return; -             } Wu             Else -             { About Conn. Close (); $SqlConnection Conninsert =NewSqlConnection (CONNSTR); -                 stringInsertsql =string. Format ("INSERT INTO Vipaccount (VUSERNAME,VUSERPWD) VALUES (' {0} ', ' {1} ')", txtname.text,txtpwd.text); -SqlCommand Cmdinsert =NewSqlCommand (Insertsql, conninsert); - Conninsert. Open (); A                 intn =Cmdinsert. ExecuteNonQuery (); +                 if(n = =0) the                 { -MessageBox.Show ("registration failed, please re-enter"); $                 } the                 Else the                 { theMessageBox.Show ("Registration Successful"); the                 } - Conninsert. Close (); in  the             } the             //Conn. Close (); About         } the  the         //back to main menu the         Private voidBtnback_click (Objectsender, EventArgs e) +         { -Vipmain VM =NewVipmain (); the VMs. Show ();Bayi              This. Hide (); the         } the  -         Private voidVipregistration_load (Objectsender, EventArgs e) -         { theLblname.text =""; theLblpwd.text =""; theLblpwdconfirm.text =""; the         } -          the     } the}

The main interface form (VIPMain.cs) adds a new button:

User Registration Button Code:

1         Private void Btnregistration_click (object  sender, EventArgs e)2        {3              New  vipregistration (); 4             Vrn. Show (); 5              This . Hide (); 6         }

C#_ member Management System: Development Five (user registration)