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2010-05-26T15:30:57Z

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2010-05-26T12:00:19Z

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== Adding a Web Control Library to a Web page==



<source lang="csharp">
<%@ Register Assembly="ClassLibrary1" Namespace="ClassLibrary1" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Adding a Custom Web Control</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<cc1:WebCustomControl1 ID="WebCustomControl1_1" runat="server" />
</div>
</form>
</body>
</html>
File: WebCustomControl1_1.cs
Imports System.ruponentModel
Imports System.Web.UI
<DefaultProperty("Text"), _
ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")>
Public Class WebCustomControl1
Inherits System.Web.UI.WebControls.WebControl
Dim _text As String
<Bindable(True), Category("Appearance"), DefaultValue("")> _
Property [Text]() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.Write([Text])
End Sub
End Class</source>

== Rendering HTML tag attributes (C#)==



<source lang="csharp">
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebControlLibrary1
{
[DefaultProperty("Text")]
[ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
public class WebCustomControl1 : WebControl
{
private string text;
[Bindable(true)]
[Category("Appearance")]
[DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
protected override void Render(HtmlTextWriter output)
{
output.RenderBeginTag(HtmlTextWriterTag.Div);
output.AddAttribute(HtmlTextWriterAttribute.Type, "text");
output.AddAttribute(HtmlTextWriterAttribute.Id, this.ClientID);
output.AddAttribute(HtmlTextWriterAttribute.Name, this.ClientID);
output.AddAttribute(HtmlTextWriterAttribute.Value, this.Text);
output.RenderBeginTag(HtmlTextWriterTag.Input);
output.RenderEndTag();
output.RenderEndTag();
}
}
}</source>

== Rendering HTML tag attributes (VB)==



<source lang="csharp">
Imports System.ruponentModel
Imports System.Web.UI
<DefaultProperty("Text"), _
ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")>
Public Class WebCustomControl1
Inherits System.Web.UI.WebControls.WebControl
Dim _text As String
<Bindable(True), Category("Appearance"), DefaultValue("")> _
Property [Text]() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.RenderBeginTag(HtmlTextWriterTag.Div)
output.AddAttribute(HtmlTextWriterAttribute.Type, "text")
output.AddAttribute(HtmlTextWriterAttribute.Id, Me.ClientID)
output.AddAttribute(HtmlTextWriterAttribute.Name, Me.ClientID)
output.AddAttribute(HtmlTextWriterAttribute.Value, Me.Text)
output.RenderBeginTag(HtmlTextWriterTag.Input)
output.RenderEndTag()
output.RenderEndTag()
End Sub

End Class</source>

== The Visual Studio Web Control Library class template (C#)==



<source lang="csharp">
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebControlLibrary1
{
[DefaultProperty("Text")]
[ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
public class WebCustomControl1 : WebControl
{
private string text;
[Bindable(true)]
[Category("Appearance")]
[DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
protected override void Render(HtmlTextWriter output)
{
output.Write(Text);
}
}
}</source>

== The Visual Studio Web Control Library class template (VB)==



<source lang="csharp">
Imports System.ruponentModel
Imports System.Web.UI
<DefaultProperty("Text"), _
ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")>
Public Class WebCustomControl1
Inherits System.Web.UI.WebControls.WebControl
Dim _text As String
<Bindable(True), Category("Appearance"), DefaultValue("")> _
Property [Text]() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.Write([Text])
End Sub
End Class</source>

== Using the HtmlTextWriter to render an HTML tag (C#)==



<source lang="csharp">
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebControlLibrary1
{
[DefaultProperty("Text")]
[ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
public class WebCustomControl1 : WebControl
{
private string text;
[Bindable(true)]
[Category("Appearance")]
[DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
protected override void Render(HtmlTextWriter output)
{
output.RenderBeginTag(HtmlTextWriterTag.Input);
output.RenderEndTag();
}
}
}</source>

== Using the HtmlTextWriter to render an HTML tag (VB)==



<source lang="csharp">
Imports System.ruponentModel
Imports System.Web.UI
<DefaultProperty("Text"), _
ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")>
Public Class WebCustomControl1
Inherits System.Web.UI.WebControls.WebControl
Dim _text As String
<Bindable(True), Category("Appearance"), DefaultValue("")> _
Property [Text]() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.RenderBeginTag(HtmlTextWriterTag.Input)
output.RenderEndTag()
End Sub
End Class</source>

== Using the HtmlTextWriter to render multiple HTML tags (C#)==



<source lang="csharp">
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebControlLibrary1
{
[DefaultProperty("Text")]
[ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
public class WebCustomControl1 : WebControl
{
private string text;
[Bindable(true)]
[Category("Appearance")]
[DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
protected override void Render(HtmlTextWriter output)
{
output.RenderBeginTag(HtmlTextWriterTag.Div);
output.RenderBeginTag(HtmlTextWriterTag.Input);
output.RenderEndTag();
output.RenderEndTag();
}
}
}</source>

== Using the HtmlTextWriter to render multiple HTML tags (VB)==



<source lang="csharp">
Imports System.ruponentModel
Imports System.Web.UI
<DefaultProperty("Text"), _
ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")>
Public Class WebCustomControl1
Inherits System.Web.UI.WebControls.WebControl
Dim _text As String
<Bindable(True), Category("Appearance"), DefaultValue("")> _
Property [Text]() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.RenderBeginTag(HtmlTextWriterTag.Div)
output.RenderBeginTag(HtmlTextWriterTag.Input)
output.RenderEndTag()
output.RenderEndTag()
End Sub
End Class</source>

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ASP.NET Tutorial/Custom Controls/Extends WebControl - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия