Question

我的上一个问题得到了很好的回答，我也希望这个问题：）。

我收到一个非常令人困惑的错误。我正在使用WebMatrix，asp.net和razor。遵循这些教程。 http://www.asp.net/web-pages/tutorials/introducing-aspnet-web-pages-2

我需要一个只接受某些单词的验证。这样的“商业”或“S7”“科学”。我只能接受一个单词，但当我输入另一个regEx语句时，它什么都不接受。

Validation.RequireField("name", "Name is needed");
Validation.RequireField("surname", "Surname is needed");
Validation.RequireField("num", "num is needed");
Validation.RequireField("add", "add is needed");
Validation.RequireField("no", "no is needed");
Validation.RequireField("course", "course is needed");
Validation.RequireField("grade", "grade is needed");

Validation.Add("no", Validator.StringLength(10,10, "Contact number can not be longer or shoter than 10 digits"));
Validation.Add("num", Validator.StringLength(13,13,"Is number must be 13 digits"));
Validation.Add("name", Validator.Regex("^[a-zA-Z ]+$", "Invalid format for a name"));  
Validation.Add("grade", Validator.Range(8,12, "Grades must be between 8 and 12"));
Validation.Add("course", Validator.Regex("S7"+"Comm", "Course not valid"));
//Validation.Add("course", Validator.Regex("^Comm$", "Course not valid blah"));

这是代码的其余部分。在此先感谢：）

@{  

    var db = Database.Open("ProjectTest");
    var Name = Request.Form["name"];
    var Surname = Request.Form["surname"];
    var IDNumber = Request.Form["num"];
    var Address = Request.Form["add"];
    var ContactNumber = Request.Form["no"];
    var Course = Request.Form["course"];
    var TechID = Request.Form["techID"];
    var grade = Request.Form["grade"];

    Validation.RequireField("name", "Name is needed");
    Validation.RequireField("surname", "Surname is needed");
    Validation.RequireField("num", "num is needed");
    Validation.RequireField("add", "add is needed");
    Validation.RequireField("no", "no is needed");
    Validation.RequireField("course", "course is needed");
    Validation.RequireField("grade", "grade is needed");

    Validation.Add("no", Validator.StringLength(10,10, "Contact number can not be longer or shoter than 10 digits"));
    Validation.Add("num", Validator.StringLength(13,13,"Is number must be 13 digits"));
    Validation.Add("name", Validator.Regex("^[a-zA-Z ]+$", "Invalid format for a name"));  
    Validation.Add("grade", Validator.Range(8,12, "Grades must be between 8 and 12"));
    Validation.Add("course", Validator.Regex("S7"+"Comm", "Course not valid"));
    //Validation.Add("course", Validator.Regex("^Comm$", "Course not valid blah"));

            if (IsPost){
                if (Validation.IsValid())
                {var insertQuery = "INSERT INTO UserInfo (Name, Surname, IdNum, Address, ContNum, Course, Grade)" + "VALUES (@0, @1, @2, @3 ,@4, @5, @6)";
                 db.Execute(insertQuery, Name, Surname, IDNumber, Address, ContactNumber, Course, grade);
                 }
                      }      
        else{
            ModelState.AddFormError("There are some errors with your submission"); 
        }  
   }


<!DOCTYPE html>

<html lang="en">
    <head>
        <meta charset="utf-8" />
        <title></title>
    </head>
    <body>
        <a href="/Home">Home</a><br>
              If you are an Student that wants to register use this form.<br>
       <form method="post">
        <table>
            <tr>
            <td>Name:</td><td><input type="text" name="name"></td>
            </tr>
            <tr>
            <td>Surname:</td><td><input type="text" name="surname"></td>
            </tr>
            <tr>
            <td>ID Number:</td><td><input type="text" name="num"><br></td>              
            </tr>
            <tr>
            <td>Address:</td><td><input type="text" name="add"><br></td>
            </tr>
            <tr>
            <td>Contact Number:</td><td><input type="text" name="no"><br></td>
            </tr>
            <tr>
            <td>Course:</td><td><input type="text" name="course" value=""></td>
            </tr>
            <tr>
            <td>Grade:</td><td><input type="text" name="grade"></td>
            </tr>
            <tr><td><input type="submit" value="Submit"></td>
            </tr>
        </table>
           @Html.ValidationMessage("name")<br>
           @Html.ValidationMessage("surname")<br>
           @Html.ValidationMessage("num")<br>
           @Html.ValidationMessage("add")<br>
           @Html.ValidationMessage("no")<br>
           @Html.ValidationMessage("course")<br>
           @Html.ValidationMessage("grade")
       </form>  
         <select name="courses">
        <option value="1" id="test">S7</option>
        <option value="2">Commerce</option>
        </select>
    </body>
</html>

Answer 1

对于代码中的两个，请尝试以下方法：

Validation.Add("course", Validator.Regex("^S7$|^Comm$", "Course not valid"));

如果您需要添加更多可能的匹配项，只需添加以管道符号分隔的匹配项：

Validation.Add("course", Validator.Regex("^S7$|^Comm$|^Science$", "Course not valid"));

当您使用数据库时，您应该询问您的数据是否可以更好地规范化。课程可以存储在表格中并链接到，而不是存储为文本吗？如果您正在学习本教程，那么这可能超出了您的工作范围，但您应该牢记未来，因为它会阻止您以这种方式验证数据。

有关正则表达式的更多信息，请查看本教程：http://www.regular-expressions.info/tutorial.html

验证只允许某些单词

1 个答案: