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Summary of Knowledge points:
[DisplayName ("username")]//the name displayed, as opposed to the @Html of the View page. labelfor (x = x.username)
[Required (allowemptystrings=false,errormessage= "{0} cannot be empty")]//can verify non-null, if empty, returns the string after ErrorMessage
[Compare ("Password", errormessage= "two times password input inconsistent")]//this statement can be compared, often used to compare two times password input consistency when registering
[RegularExpression ("Regular expression code for mailbox here", errormessage= "{0} Mailbox format error, re-enter")]//can perform regular expression validation
@Html. validationmessagefor (x = X.username, "", new {style = "color:red"})
@* This statement returns the hint information specified on the model page, and can set the style *@
ModelState.IsValid:Model page All constraints are passed before the IF statement is executed, otherwise the Else statement is executed
if (modelstate.isvalid)
{}
Else
{}
Model page Code:
public class Register
{
[DisplayName ("username")]//the name displayed, as opposed to the @Html of the View page. labelfor (x = x.username)
[Required (allowemptystrings=false,errormessage= "{0} cannot be empty")]//can verify non-null, if empty, returns the string after ErrorMessage
public string Username {get; set;}
[DisplayName ("password")]
[Required (allowemptystrings = false, ErrorMessage = "{0} cannot be empty")]
public string Password {get; set;}
[DisplayName ("Confirm password")]
[Required (allowemptystrings = false, ErrorMessage = "{0} cannot be empty")]
[Compare ("Password", errormessage= "two times password input inconsistent")]//this statement can be compared, often used to compare two times password input consistency when registering
public string Ispwd {get; set;}
[DisplayName ("email address")]
[Required (allowemptystrings = false, ErrorMessage = "{0} cannot be empty")]
[RegularExpression ("Regular expression code for mailbox here", errormessage= "{0} Mailbox format error, re-enter")]//can perform regular expression validation
public string Email {get; set;}
[DisplayName ("role")]
[Required (allowemptystrings = false, ErrorMessage = "{0} cannot be empty")]
public string Role {get; set;}
}
View page code:
<body>
@using (Html.BeginForm ("register", "register"))
{
<div id= "D1" >
<div align= "center" style= "Background-color:gray" >
New User Registration </div>
<table border= "1" align= "Center" >
<tr>
<td>
@Html. labelfor (x = x.username) @* here corresponds to the [requiredname=] user name of the model page *@
</td>
<td>
@Html. textboxfor (x = x.username)
</td>
<td>
@* This statement returns the hint information specified on the model page, and can set the style *@
@Html. validationmessagefor (x = X.username, "", new {style = "color:red"})
</td>
</tr>
<tr>
<td>
@Html. labelfor (x = X.password)
</td>
<td>
@Html. passwordfor (x = X.password)
</td>
<td>
@Html. validationmessagefor (x = X.password, "", new {style = "color:red"})
</td>
</tr>
<tr>
<td>
@Html. labelfor (x = x.ispwd)
</td>
<td>
@Html. passwordfor (x = x.ispwd)
</td>
<td>
@Html. validationmessagefor (x = x.ispwd, "", new {style = "color:red"})
</td>
</tr>
<tr>
<td>
@Html. labelfor (x = x.email)
</td>
<td>
@Html. textboxfor (x = x.email) <br/>
</td>
<td>
@Html. validationmessagefor (x = X.email, "", new {style = "color:red"})
</td>
</tr>
<tr>
<td>
Role
</td>
<td> @Html. dropdownlistfor (x = x.role, new SelectList (new string[] {"Super admin", "Teacher", "Student"}))
</td>
<td>
@Html. validationmessagefor (x = X.role, "", new {style = "color:red"})
</td>
</tr>
</table>
<div align= "center" style= "Background-color:gray;" >
<input type= "Submit" value= "registration" style= "Background-color:green; width:100px "/>
</div>
</div>
}
</body>
Controller page Code:
public class Registercontroller:controller
{
//
GET:/register/
[httpget]//Initial display of the page
Public ActionResult Register ()
{
return View ();
}
[httppost]//to process the page
Public ActionResult Register (Day04 job practice registration and login. Models.register Register)
{
The non-null and password-consistent judgments specified by the Model page are all passed before the IF statement is executed, otherwise the Else statement is executed
if (modelstate.isvalid)
{
String sqlstr = String. Format ("INSERT into Register values (' {0} ', ' {1} ', ' {2} ', ' {3} ', ' {4} ')", Register. Username, register. Password,
Register. ISPWD, register. Email, register. Role);//command statement to invoke user-entered data with parameters within a method
int rows = 0;
Select the connection string, you need to set the configuration file first
String constring = configurationmanager.connectionstrings["STU"]. ConnectionString;
using (SqlConnection conn = new SqlConnection (constring))
{
SqlCommand cmd = new SqlCommand ();//declaring Command object
Cmd.commandtext = sqlstr;//Command (SQL) statement to execute
Cmd. Connection = conn;//Select the database connection to use for the command
Conn. Open ();//Opening connection
rows = cmd. ExecuteNonQuery ();//Returns the number of rows affected
}
if (Rows > 0)
{
Added success in page Popup registration successful dialog box
Return Content ("<script>alert (' registered successfully! ') <script> "," text/html ");
}
return View ();
}
Else
{
return View ();
}
}
}
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