ASP.Net/Page/Page IsValid
Is page valid (C#)
<%@ Page Language="C#" %>
<script runat="server">
void btnSubmit_Click(Object sender, EventArgs e)
{
if (Page.IsValid)
{
lblResult.Text = @"<br />Product: " + txtProductName.Text
+ "<br />Price: " + txtProductPrice.Text
+ "<br />Quantity: " + txtProductQuantity.Text;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Order Form</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<fieldset>
<legend>Product Order Form</legend>
<asp:Label
id="lblProductName"
Text="Product Name:"
AssociatedControlID="txtProductName"
Runat="server" />
<br />
<asp:TextBox
id="txtProductName"
Runat="server" />
<asp:RequiredFieldValidator
id="reqProductName"
ControlToValidate="txtProductName"
Text="(Required)"
Runat="server" />
<br /><br />
<asp:Label
id="lblProductPrice"
Text="Product Price:"
AssociatedControlID="txtProductPrice"
Runat="server" />
<br />
<asp:TextBox
id="txtProductPrice"
Columns="5"
Runat="server" />
<asp:RequiredFieldValidator
id="reqProductPrice"
ControlToValidate="txtProductPrice"
Text="(Required)"
Display="Dynamic"
Runat="server" />
<asp:CompareValidator
id="cmpProductPrice"
ControlToValidate="txtProductPrice"
Text="(Invalid Price)"
Operator="DataTypeCheck"
Type="Currency"
Runat="server" />
<br /><br />
<asp:Label
id="lblProductQuantity"
Text="Product Quantity:"
AssociatedControlID="txtProductQuantity"
Runat="server" />
<br />
<asp:TextBox
id="txtProductQuantity"
Columns="5"
Runat="server" />
<asp:RequiredFieldValidator
id="reqProductQuantity"
ControlToValidate="txtProductQuantity"
Text="(Required)"
Display="Dynamic"
Runat="server" />
<asp:CompareValidator
id="CompareValidator1"
ControlToValidate="txtProductQuantity"
Text="(Invalid Quantity)"
Operator="DataTypeCheck"
Type="Integer"
Runat="server" />
<br /><br />
<asp:Button
id="btnSubmit"
Text="Submit Product Order"
OnClick="btnSubmit_Click"
Runat="server" />
</fieldset>
<asp:Label
id="lblResult"
Runat="server" />
</div>
</form>
</body>
</html>
Page.IsValid Demo (VB.net)
<%@ Page Language="vb" %>
<html>
<head>
<title>IsValid property example</title>
<script runat="server">
Sub Page_Load()
If IsPostBack Then
Page.Validate()
If Page.IsValid Then
Message.Text = "Page is valid."
Else
Message.Text = "Page is not valid."
End If
End If
End Sub
</script>
</head>
<body>
<form runat="server">
Enter your name:
<asp:textbox id="name" runat="server"/>
<asp:requiredfieldvalidator
id="rfvName"
controltovalidate="name"
enableclientscript="false"
errormessage="Required!"
runat="server"/>
<br/>
<asp:button id="submit" Text="Submit" runat="server"/>
<br/>
<asp:label id="Message" runat="server"/>
</form>
</body>
</html>