[英]Required Field Validator issue validating TextBox value
I have a TextBox
which i use to store a url to applied a <asp:HyperLink>
control. 我有一个
TextBox
,用于存储URL以应用<asp:HyperLink>
控件。 What i want to do is fire off the RequiredFieldValidator
when the TextBox.Text
value is empty and the user clicks save . 我想要做的是当
TextBox.Text
值为空并且用户单击“ 保存”时触发RequiredFieldValidator
。 As far as i can tell, my logic is OK, but the validator isn't firing off? 据我所知,我的逻辑是正常的,但验证器没有解雇?
Here's the markup: 这是标记:
<div class="frmRow">
<div class="frmControls">
<asp:Label ID="lblLink" AssociatedControlID="txtImgUrl" runat="server" Text="Image URL"></asp:Label>
<asp:RequiredFieldValidator ID="imgUrlValidator" runat="server" ControlToValidate="txtImgUrl" ErrorMessage="Enter a Valid URL" />
<asp:TextBox ID="txtImgUrl" runat="server" />
</div>
<div class="clearBoth"></div>
</div>
Here is the code to check a valid absolute URL which is inside my btnSave
event: 以下是检查我的
btnSave
事件中有效绝对URL的代码:
Uri url;
if (!string.IsNullOrEmpty(txtImgUrl.Text))
{
txtImgUrl.Text = Uri.TryCreate(txtImgUrl.Text, UriKind.Absolute, out url) ? url.AbsoluteUri : string.Empty;
}
Save button markup: 保存按钮标记:
<br class="clearBoth" />
<asp:Button ID="btnSave" Text="Save Case study" ImageUrl="~/Assets/Design/buttons/btn-update.gif" CssClass="btn fltr" runat="server" OnClick="btnSave_OnClick" />
<div class="clearBoth"></div>
Shouldn't the RequiredFieldValidator
be fired off when TryCreate
fails on a dodgy URL and txtImgUrl.Text = ""
? 当
TryCreate
在一个狡猾的URL上失败并且txtImgUrl.Text = ""
时,不应该触发RequiredFieldValidator
吗?
Is there something blatantly obvious that I'm missing here? 有什么明显的东西让我在这里失踪吗?
Any help is much appreciated 任何帮助深表感谢
You should check on button click 你应该点击按钮点击
if (Page.IsValid)
{
lblOutput.Text = "Required field is filled!";
}
else
{
lblOutput.Text = "Required field is empty!";
}
In ASPX in the button add 在ASPX中添加按钮
CausesValidation="true"
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.