HtmlInputButton.OnServerClick(EventArgs) Methode
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Hiermee wordt de ServerClick gebeurtenis gegenereerd. Hierdoor kunt u de gebeurtenis rechtstreeks afhandelen.
protected:
virtual void OnServerClick(EventArgs ^ e);protected virtual void OnServerClick(EventArgs e);abstract member OnServerClick : EventArgs -> unit
override this.OnServerClick : EventArgs -> unitProtected Overridable Sub OnServerClick (e As EventArgs)Parameters
Voorbeelden
In het volgende codevoorbeeld ziet u hoe u een handler voor de ServerClick gebeurtenis opgeeft en codeeert. De gebeurtenis-handler voegt de waarden van de twee tekstvakken op de pagina toe en geeft de resultaten weer.
<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void AddButton_Click(Object sender, EventArgs e)
{
int Answer;
Answer = Convert.ToInt32(Value1.Value) + Convert.ToInt32(Value2.Value);
AnswerMessage.InnerHtml = Answer.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title> HtmlInputButton Example </title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3> HtmlInputButton Example </h3>
<table>
<tr>
<td colspan="5">
Enter integer values into the text boxes. <br />
Click the Add button to add the two values. <br />
Click the Reset button to reset the text boxes.
</td>
</tr>
<tr>
<td colspan="5">
</td>
</tr>
<tr align="center">
<td>
<input id="Value1"
type="Text"
size="2"
maxlength="3"
value="1"
runat="server"/>
</td>
<td>
+
</td>
<td>
<input id="Value2"
type="Text"
size="2"
maxlength="3"
value="1"
runat="server"/>
</td>
<td>
=
</td>
<td>
<span id="AnswerMessage"
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:RequiredFieldValidator
ID="Value1RequiredValidator"
ControlToValidate="Value1"
ErrorMessage="Please enter a value.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value1MinCompareValidator"
ControlToValidate="Value1"
Operator="LessThan"
Type="Integer"
ValueToCompare="100"
ErrorMessage="Please enter an integer less than 100.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value1MaxCompareValidator"
ControlToValidate="Value1"
Operator="GreaterThan"
Type="Integer"
ValueToCompare="0"
ErrorMessage="Please enter an integer greater than 0.<br />"
Display="Dynamic"
runat="server"/>
</td>
<td colspan="2">
<asp:RequiredFieldValidator
ID="Value2RequiredValidator"
ControlToValidate="Value2"
ErrorMessage="Please enter a value.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value2MinCompareValidator"
ControlToValidate="Value2"
Operator="LessThan"
Type="Integer"
ValueToCompare="100"
ErrorMessage="Please enter an integer less than 100.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value2MaxCompareValidator"
ControlToValidate="Value2"
Operator="GreaterThan"
Type="Integer"
ValueToCompare="0"
ErrorMessage="Please enter an integer greater than 0.<br />"
Display="Dynamic"
runat="server"/>
</td>
<td>
</td>
</tr>
<tr align="center">
<td colspan="4">
<input type="Submit"
id="SubmitButton"
value="Add"
onserverclick="AddButton_Click"
runat="server"/>
<input type="Reset"
id="ResetButton"
value="Reset"
runat="server"/>
</td>
<td>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub AddButton_Click(sender As Object, e As EventArgs)
Dim Answer As Integer
Answer = Convert.ToInt32(Value1.Value) + Convert.ToInt32(Value2.Value)
AnswerMessage.InnerHtml = Answer.ToString()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title> HtmlInputButton Example </title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3> HtmlInputButton Example </h3>
<table>
<tr>
<td colspan="5">
Enter integer values into the text boxes. <br />
Click the Add button to add the two values. <br />
Click the Reset button to reset the text boxes.
</td>
</tr>
<tr>
<td colspan="5">
</td>
</tr>
<tr align="center">
<td>
<input id="Value1"
type="Text"
size="2"
maxlength="3"
value="1"
runat="server"/>
</td>
<td>
+
</td>
<td>
<input id="Value2"
type="Text"
size="2"
maxlength="3"
value="1"
runat="server"/>
</td>
<td>
=
</td>
<td>
<span id="AnswerMessage"
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:RequiredFieldValidator
ID="Value1RequiredValidator"
ControlToValidate="Value1"
ErrorMessage="Please enter a value.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value1MinCompareValidator"
ControlToValidate="Value1"
Operator="LessThan"
Type="Integer"
ValueToCompare="100"
ErrorMessage="Please enter an integer less than 100.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value1MaxCompareValidator"
ControlToValidate="Value1"
Operator="GreaterThan"
Type="Integer"
ValueToCompare="0"
ErrorMessage="Please enter an integer greater than 0.<br />"
Display="Dynamic"
runat="server"/>
</td>
<td colspan="2">
<asp:RequiredFieldValidator
ID="Value2RequiredValidator"
ControlToValidate="Value2"
ErrorMessage="Please enter a value.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value2MinCompareValidator"
ControlToValidate="Value2"
Operator="LessThan"
Type="Integer"
ValueToCompare="100"
ErrorMessage="Please enter an integer less than 100.<br />"
Display="Dynamic"
runat="server"/>
<asp:CompareValidator
ID="Value2MaxCompareValidator"
ControlToValidate="Value2"
Operator="GreaterThan"
Type="Integer"
ValueToCompare="0"
ErrorMessage="Please enter an integer greater than 0.<br />"
Display="Dynamic"
runat="server"/>
</td>
<td>
</td>
</tr>
<tr align="center">
<td colspan="4">
<input type="Submit"
id="SubmitButton"
value="Add"
onserverclick="AddButton_Click"
runat="server"/>
<input type="Reset"
id="ResetButton"
value="Reset"
runat="server"/>
</td>
<td>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
// Create a new HtmlInputButton control.
HtmlInputButton NewButtonControl = new HtmlInputButton("submit");
// Set the properties of the new HtmlInputButton control.
NewButtonControl.ID = "NewButtonControl";
NewButtonControl.Value = "Click Me";
// Create an EventHandler delegate for the method you want to handle the event
// and then add it to the list of methods called when the event is raised.
NewButtonControl.ServerClick += new System.EventHandler(this.Button_Click);
// Add the new HtmlInputButton control to the Controls collection of the
// PlaceHolder control.
ControlContainer.Controls.Add(NewButtonControl);
}
void Button_Click(Object sender, EventArgs e)
{
// Display a simple message.
Message.InnerHtml = "Thank you for clicking the button.";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>HtmlInputButton ServerClick Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3> HtmlInputButton ServerClick Example </h3>
<asp:PlaceHolder ID="ControlContainer"
runat="server"/>
<br /><br />
<span id="Message"
runat="server"/>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
' Create a new HtmlInputButton control.
Dim NewButtonControl As New HtmlInputButton()
' Set the properties of the new HtmlInputButton control.
NewButtonControl.ID = "NewButtonControl"
NewButtonControl.Value = "Click Me"
' Create an EventHandler delegate for the method you want to handle the event
' and then add it to the list of methods called when the event is raised.
AddHandler NewButtonControl.ServerClick, AddressOf Button_Click
' Add the new HtmlInputButton control to the Controls collection of the
' PlaceHolder control.
ControlContainer.Controls.Add(NewButtonControl)
End Sub
Sub Button_Click(ByVal sender As Object, ByVal e As EventArgs)
' Display a simple message.
Message.InnerHtml = "Thank you for clicking the button."
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>HtmlInputButton ServerClick Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3> HtmlInputButton ServerClick Example </h3>
<asp:PlaceHolder ID="ControlContainer"
runat="server"/>
<br /><br />
<span id="Message"
runat="server"/>
</form>
</body>
</html>
Opmerkingen
De ServerClick gebeurtenis wordt gegenereerd wanneer op een HtmlInputButton besturingselement wordt geklikt.
Note
De gebeurtenis wordt niet gegenereerd door een ServerClick knop Opnieuw instellen.
Wanneer u een HtmlInputButton gemachtigde maakt, identificeert u de methode die de gebeurtenis verwerkt. Als u de gebeurtenis wilt koppelen aan uw gebeurtenis-handler, voegt u een exemplaar van de gemachtigde toe aan de gebeurtenis. De gebeurtenis-handler wordt aangeroepen wanneer de gebeurtenis plaatsvindt, tenzij u de gemachtigde verwijdert. Zie Afhandeling en het genereren van gebeurtenissen voor meer informatie over gedelegeerden van de gebeurtenis-handler.