IValidator.Validate Método
Definição
public:
void Validate();
public void Validate ();
abstract member Validate : unit -> unit
Public Sub Validate ()
Exemplos
Importante
Este exemplo tem uma caixa de texto que aceita a entrada do usuário, que é uma possível ameaça à segurança.This example has a text box that accepts user input, which is a potential security threat. Por padrão, as páginas da Web do ASP.NET validam que a entrada do usuário não inclui elementos de script ou HTML.By default, ASP.NET Web pages validate that user input does not include script or HTML elements. Para obter mais informações, consulte Visão geral de explorações de script.For more information, see Script Exploits Overview.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>IValidator Example demonstrating IsValid & ErrorMessage</title>
<script language="C#" runat="server">
void Button_Click(Object sender, EventArgs e)
{
// Generating the random number.
Random rand_s = new Random();
myCompareValidate.ValueToCompare = rand_s.Next(1, 10).ToString();
// Setting the ErrorMessage.
myCompareValidate.ErrorMessage="Try Again!!";
myCompareValidate.Validate();
// Check for Validity of control.
if ((myCompareValidate.IsValid) && (myTextBox.Text != ""))
{
labelOutput.Text = "You guessed correctly!!";
labelOutput.ForeColor = System.Drawing.Color.Blue;
}
else
{
labelOutput.Text = "You guessed poorly";
labelOutput.ForeColor = System.Drawing.Color.Black;
}
labelOutput.Text += "<br /><br />" + "The number is: " +
myCompareValidate.ValueToCompare;
}
</script>
</head>
<body>
<form runat="server" id="myForm">
<h3>IValidator Example demonstrating IsValid & ErrorMessage</h3>
<h5>Guess!! a number between 1 and 10 :</h5>
<asp:TextBox id="myTextBox" runat="server" />
<asp:CompareValidator id="myCompareValidate"
ControlToValidate="myTextBox" ValueToCompare="0"
EnableClientScript="False" Type="Integer" Text="*"
runat="server" />
<br />
<asp:Button Text="Submit" OnClick="Button_Click" runat="server" />
<br />
<asp:Label id="labelOutput" runat="server" />
<br />
<asp:ValidationSummary id="Summary1" runat="server" />
</form>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>IValidator Example demonstrating IsValid & ErrorMessage</title>
<script language="VB" runat="server">
Sub Button_Click(sender As [Object], e As EventArgs)
' Generating a random number.
Dim rand_s As New Random()
myCompareValidate.ValueToCompare = rand_s.Next(1, 10).ToString()
' Set the ErrorMessage.
myCompareValidate.ErrorMessage = "Try Again!!"
myCompareValidate.Validate()
' Check for Validity of control.
If myCompareValidate.IsValid And myTextBox.Text <> "" Then
labelOutput.Text = "You guessed correctly!!"
labelOutput.ForeColor = System.Drawing.Color.Blue
Else
labelOutput.Text = "You guessed poorly"
labelOutput.ForeColor = System.Drawing.Color.Black
End If
labelOutput.Text += "<br /><br />" + "The number is: " + _
myCompareValidate.ValueToCompare
End Sub 'Button_Click
</script>
</head>
<body>
<form runat="server" id="myForm">
<h3>IValidator Example demonstrating IsValid & ErrorMessage</h3>
<h5>Guess!! a number between 1 and 10:</h5>
<asp:TextBox id="myTextBox" runat="server" />
<asp:CompareValidator id="myCompareValidate"
ControlToValidate="myTextBox" ValueToCompare="0"
EnableClientScript="False" Type="Integer" Text="*"
runat="server" />
<br />
<asp:Button Text="Submit" OnClick="Button_Click" runat="server" />
<br />
<asp:Label id="labelOutput" runat="server" />
<br />
<asp:ValidationSummary id="Summary1" runat="server" />
</form>
</body>
</html>