HtmlInputButton.OnServerClick(EventArgs) Metoda
Definice
Důležité
Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.
ServerClick Vyvolá událost. To vám umožní zpracovat událost přímo.
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)Parametry
Příklady
Následující příklad kódu ukazuje, jak zadat a kód obslužné rutiny ServerClick pro událost. Obslužná rutina události sečte hodnoty dvou textových polí na stránce a zobrazí výsledky.
<%@ 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>
Poznámky
Událost ServerClick je vyvolána při HtmlInputButton kliknutí na ovládací prvek.
Poznámka
Tlačítko Resetovat nevyvolá ServerClick událost.
Při vytváření delegáta HtmlInputButton identifikujete metodu, která bude událost zpracovávat. Pokud chcete událost přidružit k obslužné rutině události, přidejte do události instanci delegáta. Obslužná rutina události je volána při každém výskytu události, dokud neodeberete delegáta. Další informace o delegátech obslužných rutin událostí najdete v tématu Zpracování a vyvolávání událostí.
Platí pro
Viz také
Spolupracujte s námi na GitHubu
Zdroj tohoto obsahu najdete na GitHubu, kde můžete také vytvářet a kontrolovat problémy a žádosti o přijetí změn. Další informace najdete v našem průvodci pro přispěvatele.
