Question

我在创建需要用户在字段中输入信息的表单时遇到问题，确认电子邮件和密码输入，并在匹配/填写所有这些字段时转到下一个表单。单独地，代码I有工作，但我似乎无法找到一种方法，以便在进入下一个表格之前满足所有要求。如果我点击继续按钮，它现在只是进入下一个表格。

我的代码的一些摘录是：

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

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 2

您是否在Visual Studio 2012中使用Web应用程序表单。您可以在.ASPX文件中使用字段验证程序，以便在表单提交之前验证您要验证的任何字段。用C＃编写所有内容要容易得多。

Answer 3

如果要绑定控件或将控件转换为数据对象，则可以使用DataAnnotation。然后很容易验证。请参阅链接了解更多详情

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

Answer 4

问题是无论if结果如何，都会创建和打开表单，因为它的代码在ifs之外。首先，检查没有字段为空，然后检查是否已满足验证，然后打开新窗口。这样的事情应该有效：

//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 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();
}

在c＃visual studio中验证必填字段和确认字段

5 个答案: