在c＃visual studio中驗證必填字段並確認字段

Question

我在創建需要用戶在字段中輸入信息的窗體時遇到問題，請確認電子郵件和密碼條目，然後在所有這些字段都爲空時轉到下一個窗體匹配/填寫。單獨的代碼我有工作，但我似乎無法找到一種方法來滿足所有需求，然後再進入下一個表單。目前它只是進入下一個表格，如果我點擊繼續按鈕。

一些代碼，我的摘錄：

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

被創建，如果結果無論打開，因爲它的代碼是IFS外形式的問題的鏈接。首先，檢查沒有字段爲空，然後檢查是否滿足驗證，然後打開新窗口。像這樣的東西應該工作：

//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可以使用字段驗證.aspx文件中爲您希望的任何領域的Web應用程序的形式在表單提交之前驗證。在C＃中編寫所有東西要容易得多。

Answer 4

如果您正在綁定或將控件轉換爲數據對象，則可以使用DataAnnotation。那麼它將很容易驗證。請詳見

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

Answer 5

試試這個：

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(); 
}