Formview控件文本框验证 [英] Formview control textbox validations
本文介绍了Formview控件文本框验证的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
大家好，
我正在使用Formview控件.
我编写了一切用于在Formview控件中使用文本框插入数据的内容，但现在我想验证文本框.
我写了JavaScript进行验证，以不接受空白值输入文本框.
我在<插入项目模板>中单击了两个按钮.每当我按下关闭按钮时，我都想验证我的文本框.
我创建了如下功能.
请任何人可以帮助我.
在此先感谢
Hi to all,
I am working on formview control.
I wrote everything for inserting data by using textboxes in formview control but now I want to validate textboxes.
I wrote javascript for validations not to accept blank values into textboxes.
I have taken two buttons in <Insert itemtemplate> and whenever I press the close button I want to validate my textbox.
I have created a funtion as below.
Please any one can help me.
Thanks in advance
<script id="CloseNotesFormView" language="javascript" type="text/javascript">
function validate() {
if (document.getElementById("<%=NotesTextBox.ClientID%>").value == "") {
alert("You cant close the issue without Note");
document.getElementById("<%=NotesTextBox.ClientID%>").focus();
return false;
}
else {
alert("Issue has been successfully closed");
return true;
}
}
</script>
.aspx
.aspx
<asp:Button ID="btnUpdCloseNote" runat="server" CausesValidation="True"
Text="Close" Height="21px" Width="60px" onclick="btnUpdCloseNote_Click" OnClientClick="return validate" xmlns:asp="#unknown"
ValidationGroup="CloseNote" />
<td class="style33" valign="top">
Close Note</td>
<td>
<asp:TextBox ID="NotesTextBox" runat="server" TextMode="MultiLine" Rows="6"
Font-Names=""Lucida Grande",Arial,Lucida,Helvetica,sans-serif"
Font-Size="11px" Width="304px"></asp:TextBox>
<asp:RequiredFieldValidator ID="rqfCloseNote" runat="server"
ErrorMessage="Close Note must be entered"
ControlToValidate="NotesTextBox" Display="Dynamic"
ValidationGroup="CloseNote">*</asp:RequiredFieldValidator>
</td>
推荐答案
不要验证黑色值，只需将其过滤掉，使用户无法输入它们.
例如:
Don''t validate black values, simply filter them out, so the user cannot enter them.
For example:
<html>
<head>
<script type="text/javascript"><!--
function filterBlank(eventInstance) {
eventInstance = eventInstance || window.event;
key = eventInstance.keyCode || eventInstance.which;
if (key != 32) {
return true;
} else {
if (eventInstance.preventDefault)
eventInstance.preventDefault();
eventInstance.returnValue = false;
return false;
} //if
} //filterBlank
--></script>
</head>
<body>
<input type="text" onkeypress="filterBlank(event)"/>
</body>
</html>
这篇关于Formview控件文本框验证的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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