HtmlInputImage.ServerClick Händelse
Definition
Viktigt
En del information gäller för förhandsversionen av en produkt och kan komma att ändras avsevärt innan produkten blir allmänt tillgänglig. Microsoft lämnar inga garantier, uttryckliga eller underförstådda, avseende informationen som visas här.
Inträffar på servern när användaren klickar på en HtmlInputImage kontroll.
public:
event System::Web::UI::ImageClickEventHandler ^ ServerClick;public event System.Web.UI.ImageClickEventHandler ServerClick;member this.ServerClick : System.Web.UI.ImageClickEventHandler Public Custom Event ServerClick As ImageClickEventHandler Händelsetyp
Exempel
I följande kodexempel visas hur du anger och kodar en hanterare för händelsen för ServerClick att fastställa koordinaterna där användaren klickar på HtmlInputImage kontrollen.
<%@ 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 ImageBtn_Click(object sender, ImageClickEventArgs e)
{
// Write the click coordinates to the Span1 element.
Span1.InnerText = "You clicked at (" + e.X.ToString() +
", " + e.Y.ToString() + ").";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Click the Image </title>
</head>
<body>
<form id="form1" runat="server">
<h3>Click the Image </h3>
<input type="image"
alt="Image Alternate Text"
src="Image1.jpg"
onserverclick="ImageBtn_Click"
runat="server" id="Image1"/>
<br />
<br />
<span id="Span1"
runat="server"/>
</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">
Sub ImageBtn_Click(ByVal Sender As Object, ByVal E As ImageClickEventArgs)
' Write the click coordinates to the Span1 element.
Span1.InnerText = "You clicked at (" & E.X.ToString() & _
", " & E.Y.ToString() & ")."
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Click the Image </title>
</head>
<body>
<form id="form1" runat="server">
<h3>Click the Image </h3>
<input type="image"
alt="Image Alternate Text"
src="Image1.jpg"
onserverclick="ImageBtn_Click"
runat="server"/>
<br />
<br />
<span id="Span1"
runat="server"/>
</form>
</body>
</html>
<%@ 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">
void ImageBtn_Click(Object sender, ImageClickEventArgs e)
{
// Display the coordinates of the position where the image
// was clicked.
Span1.InnerText = "You clicked at (" + e.X.ToString() +
", " + e.Y.ToString() + ").";
}
void Page_Load(Object sender, EventArgs e)
{
// 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.
Image1.ServerClick += new ImageClickEventHandler(this.ImageBtn_Click);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>HtmlInputImage ServerClick Example </title>
</head>
<body>
<form id="form1" runat="server">
<h3>HtmlInputImage ServerClick Example </h3>
<input type="image"
id="Image1"
src="Image.jpg"
alt="Image"
runat="server"/>
<br />
<span id="Span1"
runat="server"/>
</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">
Sub ImageBtn_Click(ByVal sender As Object, ByVal e As ImageClickEventArgs)
' Display the coordinates of the position where the image
' was clicked.
Span1.InnerText = "You clicked at (" & e.X.ToString() & _
", " & e.Y.ToString() & ")."
End Sub
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
' 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 Image1.ServerClick, AddressOf ImageBtn_Click
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>HtmlInputImage ServerClick Example </title>
</head>
<body>
<form id="form1" runat="server">
<h3>HtmlInputImage ServerClick Example </h3>
<input type="image"
id="Image1"
src="Image.jpg"
alt="Image"
runat="server"/>
<br />
<span id="Span1"
runat="server"/>
</form>
</body>
</html>
Kommentarer
Händelsen ServerClick utlöses när användaren klickar på en HtmlInputImage kontroll.
Mer information om hur du hanterar händelser finns i Hantera och höja händelser.
