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ASP.NET Tutorial/Custom Controls/PostBack - История изменений
2026-04-29T15:57:28Z
История изменений этой страницы в вики
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http://nfex.ru/index.php?title=ASP.NET_Tutorial/Custom_Controls/PostBack&diff=3318&oldid=prev
в 15:30, 26 мая 2010
2010-05-26T15:30:57Z
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http://nfex.ru/index.php?title=ASP.NET_Tutorial/Custom_Controls/PostBack&diff=3319&oldid=prev
Admin: 1 версия
2010-05-26T12:00:20Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== Adding PostBack capabilities to a server control (C#)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
using System.ruponentModel;<br />
using System.Text;<br />
using System.Web.UI;<br />
using System.Web.UI.WebControls;<br />
namespace WebControlLibrary1<br />
{<br />
[DefaultProperty("Text")]<br />
[ToolboxData("<{0}:WebCustomControl3 runat=server></{0}:WebCustomControl3>")]<br />
public class WebCustomControl3 : WebControl<br />
{<br />
protected override void Render(HtmlTextWriter output)<br />
{<br />
PostBackOptions p = new PostBackOptions(this);<br />
output.AddAttribute(HtmlTextWriterAttribute.Onclick,<br />
Page.ClientScript.GetPostBackEventReference(p));<br />
output.AddAttribute(HtmlTextWriterAttribute.Value, "My Button");<br />
output.AddAttribute(HtmlTextWriterAttribute.Id, this.ClientID);<br />
output.AddAttribute(HtmlTextWriterAttribute.Name, this.ClientID);<br />
output.RenderBeginTag(HtmlTextWriterTag.Button);<br />
output.RenderEndTag();<br />
}<br />
}<br />
}</source><br />
<br />
<br />
<br />
== Adding PostBack capabilities to a server control (VB)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
Imports System.ruponentModel<br />
Imports System.Web.UI<br />
<DefaultProperty("Text")> _<br />
<ToolboxData("<{0}:WebCustomControl3 runat=server></{0}:WebCustomControl3>")> _<br />
Public Class WebCustomControl3<br />
Inherits System.Web.UI.WebControls.WebControl<br />
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)<br />
Dim p As New PostBackOptions(Me)<br />
output.AddAttribute(HtmlTextWriterAttribute.Onclick, _<br />
Page.ClientScript.GetPostBackEventReference(p))<br />
output.AddAttribute(HtmlTextWriterAttribute.Value, "My Button")<br />
output.AddAttribute(HtmlTextWriterAttribute.Id, Me.ClientID)<br />
output.AddAttribute(HtmlTextWriterAttribute.Name, Me.ClientID)<br />
output.RenderBeginTag(HtmlTextWriterTag.Button)<br />
output.RenderEndTag()<br />
End Sub<br />
End Class</source><br />
<br />
<br />
<br />
== Handling postback events in a server control (C#)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
using System.ruponentModel;<br />
using System.Text;<br />
using System.Web.UI;<br />
using System.Web.UI.WebControls;<br />
namespace WebControlLibrary1<br />
{<br />
[DefaultProperty("Text")]<br />
[ToolboxData("<{0}:WebCustomControl3 runat=server></{0}:WebCustomControl3>")]<br />
public class WebCustomControl3 : WebControl, IPostBackEventHandler<br />
{<br />
protected override void Render(HtmlTextWriter output)<br />
{<br />
PostBackOptions p = new PostBackOptions(this);<br />
output.AddAttribute(HtmlTextWriterAttribute.Onclick,Page.ClientScript.GetPostBackEventReference(p));<br />
output.AddAttribute(HtmlTextWriterAttribute.Value, "My Button");<br />
output.AddAttribute(HtmlTextWriterAttribute.Id, this.ClientID);<br />
output.AddAttribute(HtmlTextWriterAttribute.Name, this.ClientID);<br />
output.RenderBeginTag(HtmlTextWriterTag.Button);<br />
output.RenderEndTag();<br />
}<br />
#region IPostBackEventHandler Members<br />
public event EventHandler Click;<br />
public virtual void OnClick(EventArgs e)<br />
{<br />
if (Click != null)<br />
{<br />
Click(this, e);<br />
}<br />
}<br />
public void RaisePostBackEvent(string eventArgument)<br />
{<br />
OnClick(EventArgs.Empty);<br />
}<br />
#endregion<br />
<br />
}<br />
}</source><br />
<br />
<br />
<br />
== Handling postback events in a server control (VB)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
Imports System.ruponentModel<br />
Imports System.Web.UI<br />
<DefaultProperty("Text")> _<br />
<ToolboxData("<{0}:WebCustomControl3 runat=server></{0}:WebCustomControl3>")> _<br />
Public Class WebCustomControl3<br />
Inherits System.Web.UI.WebControls.WebControl<br />
Implements IPostBackEventHandler<br />
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)<br />
Dim p As New PostBackOptions(Me)<br />
output.AddAttribute(HtmlTextWriterAttribute.Onclick, _<br />
Page.ClientScript.GetPostBackEventReference(p))<br />
output.AddAttribute(HtmlTextWriterAttribute.Value, "My Button")<br />
output.AddAttribute(HtmlTextWriterAttribute.Id, Me.ClientID)<br />
output.AddAttribute(HtmlTextWriterAttribute.Name, Me.ClientID)<br />
output.RenderBeginTag(HtmlTextWriterTag.Button)<br />
output.RenderEndTag()<br />
End Sub<br />
Public Event Click()<br />
Public Sub OnClick(ByVal args As EventArgs)<br />
RaiseEvent Click()<br />
End Sub<br />
Public Sub RaisePostBackEvent(ByVal eventArgument As String) Implements System.Web.UI.IPostBackEventHandler.RaisePostBackEvent<br />
OnClick(EventArgs.Empty)<br />
End Sub<br />
End Class</source></div>
Admin