在c＃visual studio中验证必填字段并确认字段

Question

我在创建需要用户在字段中输入信息的窗体时遇到问题，请确认电子邮件和密码条目，然后在所有这些字段都为空时转到下一个窗体匹配/填写。单独的代码我有工作，但我似乎无法找到一种方法来满足所有需求，然后再进入下一个表单。目前它只是进入下一个表格，如果我点击继续按钮。

一些代码，我的摘录：

if (string.IsNullOrEmpty(email)) 
{ 
    lblRequirementsError.Text = ("All required fields have not been filled."); 
} 

if (txtBoxEmail.Text != txtBoxConfirmEmail.Text) 
{ 
    lblEmailError.Text = ("Email reentry does not match. Please reenter."); 
} 

if (txtBoxPassword.Text != txtBoxConfirmPassword.Text) 
{ 
    lblPasswordError.Text = ("Password reentry does not match. Please reenter."); 
} 

this.Hide(); 
frmBilling secondForm = new frmBilling(); 
secondForm.Show(); 

Answer 1

被创建，如果结果无论打开，因为它的代码是IFS外形式的问题的链接。首先，检查没有字段为空，然后检查是否满足验证，然后打开新窗口。像这样的东西应该工作：

//If both email and password are not empty 
if (!string.IsNullOrEmpty(email) && !string.IsNullOrEmpty(password)) 
{ 
    //if both email and password math the re entry 
    if (txtBoxEmail.Text == txtBoxConfirmEmail.Text && 
     txtBoxPassword.Text == txtBoxConfirmPassword.Text) 
    { 
     //execute the code to open the new form 
     this.Hide(); 
     frmBilling secondForm = new frmBilling(); 
     secondForm.Show(); 
    } 
} 

Answer 2

if (! txtBoxEmail.Text.Equals(txtBoxConfirmEmail.Text)) 
{ 
    lblEmailError.Text = ("Email reentry does not match. Please reenter."); 
} 

if (! txtBoxPassword.Text.Equals(txtBoxConfirmPassword.Text)) 
{ 
    lblPasswordError.Text = ("Password reentry does not match. Please reenter."); 
} 

Answer 3

您使用在Visual Studio 2012可以使用字段验证.aspx文件中为您希望的任何领域的Web应用程序的形式在表单提交之前验证。在C＃中编写所有东西要容易得多。

Answer 4

如果您正在绑定或将控件转换为数据对象，则可以使用DataAnnotation。那么它将很容易验证。请详见

http://msdn.microsoft.com/en-us/library/dd901590(VS.95).aspx

Answer 5

试试这个：

bool validationStatus = default(bool); 

if (string.IsNullOrEmpty(email)) 
{ 
    lblRequirementsError.Text = ("All required fields have not been filled."); 
    validationStatus = true; 
} 

if (txtBoxEmail.Text != txtBoxConfirmEmail.Text) 
{ 
    lblEmailError.Text = ("Email reentry does not match. Please reenter."); 
    validationStatus = true; 
} 

if (txtBoxPassword.Text != txtBoxConfirmPassword.Text) 
{ 
    lblPasswordError.Text = ("Password reentry does not match. Please reenter."); 
    validationStatus = true; 
} 

if(!validationStatus) 
{ 
    Hide(); 
    frmBilling secondForm = new frmBilling(); 
    secondForm.Show(); 
}