Step by step. NET three-tier Architecture Analysis 7. UI design (login page, registration page, and add Department page)

After we have designed SQLHelper, Model, DAL, and BLL for the three-tier architecture, we have to call the functions it has designed.

First, let's design Login. aspx. First, let's look at the interface design:

View sourceprint? <Table>

<Tr>

<Td style = "width: 100px; text-align: right">

Account name: </td>

<Td style = "width: 100px">

<Asp: TextBox ID = "txtUserName" runat = "server"> </asp: TextBox> </td>

</Tr>

<Tr>

<Td style = "width: 100px; text-align: right">

Password: </td>

<Td style = "width: 100px">

<Asp: TextBox ID = "txtPassWord" runat = "server" TextMode = "Password"> </asp: TextBox> </td>

</Tr>

<Tr>

<Td style = "width: 100px">

</Td>

<Td style = "width: 100px">

<Asp: Button ID = "btnLogin" runat = "server" OnClick = "btnLogin_Click1" Text = "login"/> </td>

</Tr>

</Table>

Let's take a look at the design of Login. aspx. cs:

Remember to add this:

View sourceprint? Using BLL;

Using Model;

Then:

View sourceprint? Protected void Page_Load (object sender, EventArgs e)

{

}

Protected void btnLogin_Click1 (object sender, EventArgs e)

{

Custom Custom = new custom ();

CustomSystem CustomSystem = new customSystem ();

Custom = CustomSystem. GetSinglename (txtUserName. Text. Trim (). ToString ());

If (Custom. ename = txtUserName. Text. Trim (). ToString ())

{

// The password is saved to the database after MD5 Encryption
View sourceprint? If (Custom. password = FormsAuthentication. HashPasswordForStoringInConfigFile (txtPassWord. Text. Trim (). ToString (), "MD5 "))

{

Department Department = new department ();

DepartmentSystem DepartmentSystem = new departmentSystem ();

Department = DepartmentSystem. Getsingledepartment (Custom. departID );

SetSession (Department, Custom. departID. ToString ());

}

Else

{

Response. Write ("<script> alert (incorrect password); location. href = Login. aspx; </script> ");

}

}

Else

{

Response. Write ("<script> alert (account name does not exist); location. href = Login. aspx; </script> ");

}

}

Private void SetSession (department Department, string DepartID)

{

If (Department = null | string. IsNullOrEmpty (DepartID ))

{

Response. Write ("<script> alert (website operation error or you have not set the department information, please contact the Administrator.); location. href = Login. aspx; </script> ");

Return;

}

Session ["Ename"] = txtUserName. Text. Trim (). ToString ();

Session ["Departid"] = DepartID;

Session ["Operater"] = "";

If (Department. role name = "Control Center ")

{

Response. Write ("<script> alert (logon successful); location. href = Default. aspx; </script> ");

}

Else

{

Response. Write ("<script> alert (logon successful); location. href = Default2.aspx; </script> ");

}

}

Next, we will create PageBase. cs in the App_Code file.

View sourceprint? Public bool IsAdmin ()

{

If (Session ["Departid"]! = Null)

{

Department Department = new department ();

DepartmentSystem DepartmentSystem = new departmentSystem ();

Department = DepartmentSystem. Getsingledepartment (int. Parse (Session ["Departid"]. ToString ()));

If (Department. Partition name! = "Control Center ")

{

Response. Redirect ("/Web/Login. aspx ");

Response. End ();

Return false;

}

}

Else

{

Response. Redirect ("/Web/Login. aspx ");

Response. End ();

Return false;

}

Return true;

}

Add the following method:

Let's take a look at the design of ADDdepart. aspx:

View sourceprint? <Table>

<Tr>

<Td style = "width: 100px">

Department name: </td>

<Td style = "width: 100px">

<Asp: TextBox ID = "txtDepartmentName" runat = "server"> </asp: TextBox> </td>