CompareValidator is missing values

Question

我在一个web表单上有两个文本框控件，txtPassword和txtPassword2。

使用CompareValidator控件，两个字段都需要匹配。

txtPassword = "" 
txtPassword2 = "" 
No compare error 
txtPassword throws it's required field error
txtPassword = "1" 
txtPassword2 = "" 
No compare error
txtPassword = "" 
txtPassword2 = "1" 
Compare error 
txtPassword throws it's required field error
txtPassword = "1" 
txtPassword2 = "2" 
Compare error

知道为什么它缺少txtPassword2的空白值吗？

这是代码：

<asp:TextBox ID="txtPassword" Text="" TextMode="Password" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Required!" ControlToValidate="txtPassword"></asp:RequiredFieldValidator>
<asp:TextBox ID="txtPassword2" Text="" TextMode="Password" runat="server"></asp:TextBox>
<asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="Passwords do not match!" ControlToValidate="txtPassword2" ControlToCompare="txtPassword"></asp:CompareValidator>

Answer 1

您只为txtPassword添加asp:RequiredFieldValidator，因此如果txtPassword2为空，则不会引发所需的字段错误。需要为txtPassword2添加asp:RequiredFieldValidator，还需要指定验证组。因此代码将类似于：

<asp:TextBox ID="txtPassword" Text="" TextMode="Password" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Required!" ControlToValidate="txtPassword" ValidationGroup="checkNull"></asp:RequiredFieldValidator>
<asp:TextBox ID="txtPassword2" Text="" TextMode="Password" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="Required!" ControlToValidate="txtPassword2" ValidationGroup="checkNull"></asp:RequiredFieldValidator>
<asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="Passwords do not match!" ControlToValidate="txtPassword2" ControlToCompare="txtPassword"></asp:CompareValidator>

Answer 2

我也遇到过类似的情况，我希望在"插入"过程中需要密码，并使用RequiredFieldValidators确保两个密码框都用CompareValidator完成，以确保它们匹配。

在编辑模式下，我关闭了RequiredFieldValidators，遇到了同样的问题，如果PasswordConfirm Textbox为空，它不会停止匹配。

我通过使用2个CompareValidators来解决这个问题，因为ControlToValidate和ControlToCompare字段交换了。这迫使他们相互验证，这样，如果在其中任何一个中键入了任何内容，就会强制检查

<asp:CompareValidator ID="CompareValidator1" runat="server" ControlToValidate="tbPassword" ControlToCompare="tbConfirmPassword"  Type="String" Display="Dynamic" ForeColor="Red" ErrorMessage="<br />The new passwords do not match" />
<asp:CompareValidator ID="CompareValidator2" runat="server" ControlToValidate="tbConfirmPassword" ControlToCompare="tbPassword"  Type="String" Display="Dynamic" ForeColor="Red" ErrorMessage="<br />The new passwords do not match" />