Html32TextWriter Konstruktorer
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.
Initierar en ny instans av Html32TextWriter klassen.
Överlagringar
| Name | Description |
|---|---|
| Html32TextWriter(TextWriter) |
Initierar en ny instans av Html32TextWriter klassen som använder radindraget som anges i DefaultTabString fältet när den begärande webbläsaren kräver radindrag. |
| Html32TextWriter(TextWriter, String) |
Initierar en ny instans av Html32TextWriter klassen som använder den angivna radindraget. |
Html32TextWriter(TextWriter)
Initierar en ny instans av Html32TextWriter klassen som använder radindraget som anges i DefaultTabString fältet när den begärande webbläsaren kräver radindrag.
public:
Html32TextWriter(System::IO::TextWriter ^ writer);public Html32TextWriter(System.IO.TextWriter writer);new System.Web.UI.Html32TextWriter : System.IO.TextWriter -> System.Web.UI.Html32TextWriterPublic Sub New (writer As TextWriter)Parametrar
- writer
- TextWriter
Det TextWriter som återger HTML-innehållet.
Exempel
Följande kodexempel visar hur du använder en anpassad klass som härleds från Html32TextWriter klassen. Den har två konstruktorer, som är standard för alla klasser som härleds direkt eller indirekt från HtmlTextWriter klassen.
using System.IO;
using System.Web.UI;
namespace Examples.AspNet
{
public class CustomHtml32TextWriter : Html32TextWriter
{
// Create a constructor for the class
// that takes a TextWriter as a parameter.
public CustomHtml32TextWriter(TextWriter writer)
: this(writer, DefaultTabString)
{
}
// Create a constructor for the class that takes
// a TextWriter and a string as parameters.
public CustomHtml32TextWriter(TextWriter writer, String tabString)
: base(writer, tabString)
{
}
// Override the RenderBeforeContent method to render
// styles before rendering the content of a <th> element.
protected override string RenderBeforeContent()
{
// Check the TagKey property. If its value is
// HtmlTextWriterTag.TH, check the value of the
// SupportsBold property. If true, return the
// opening tag of a <b> element; otherwise, render
// the opening tag of a <font> element with a color
// attribute set to the hexadecimal value for red.
if (TagKey == HtmlTextWriterTag.Th)
{
if (SupportsBold)
return "<b>";
else
return "<font color=\"FF0000\">";
}
// Check whether the element being rendered
// is an <H4> element. If it is, check the
// value of the SupportsItalic property.
// If true, render the opening tag of the <i> element
// prior to the <H4> element's content; otherwise,
// render the opening tag of a <font> element
// with a color attribute set to the hexadecimal
// value for navy blue.
if (TagKey == HtmlTextWriterTag.H4)
{
if (SupportsItalic)
return "<i>";
else
return "<font color=\"000080\">";
}
// Call the base method.
return base.RenderBeforeContent();
}
// Override the RenderAfterContent method to close
// styles opened during the call to the RenderBeforeContent
// method.
protected override string RenderAfterContent()
{
// Check whether the element being rendered is a <th> element.
// If so, and the requesting device supports bold formatting,
// render the closing tag of the <b> element. If not,
// render the closing tag of the <font> element.
if (TagKey == HtmlTextWriterTag.Th)
{
if (SupportsBold)
return "</b>";
else
return "</font>";
}
// Check whether the element being rendered is an <H4>.
// element. If so, and the requesting device supports italic
// formatting, render the closing tag of the <i> element.
// If not, render the closing tag of the <font> element.
if (TagKey == HtmlTextWriterTag.H4)
{
if (SupportsItalic)
return "</i>";
else
return "</font>";
}
// Call the base method
return base.RenderAfterContent();
}
// Override the RenderBeforeTag method to render the
// opening tag of a <small> element to modify the text size of
// any <a> elements that this writer encounters.
protected override string RenderBeforeTag()
{
// Check whether the element being rendered is an
// <a> element. If so, render the opening tag
// of the <small> element; otherwise, call the base method.
if (TagKey == HtmlTextWriterTag.A)
return "<small>";
return base.RenderBeforeTag();
}
// Override the RenderAfterTag method to render
// close any elements opened in the RenderBeforeTag
// method call.
protected override string RenderAfterTag()
{
// Check whether the element being rendered is an
// <a> element. If so, render the closing tag of the
// <small> element; otherwise, call the base method.
if (TagKey == HtmlTextWriterTag.A)
return "</small>";
return base.RenderAfterTag();
}
}
}
' Create a custom HtmlTextWriter class that overrides
' the RenderBeforeContent and RenderAfterContent methods.
Imports System.IO
Imports System.Web.UI
Namespace Examples.AspNet
Public Class CustomHtml32TextWriter
Inherits Html32TextWriter
' Create a constructor for the class
' that takes a TextWriter as a parameter.
Public Sub New(ByVal writer As TextWriter)
Me.New(writer, DefaultTabString)
End Sub
' Create a constructor for the class that takes
' a TextWriter and a string as parameters.
Public Sub New(ByVal writer As TextWriter, ByVal tabString As String)
MyBase.New(writer, tabString)
End Sub
' Override the RenderBeforeContent method to render
' styles before rendering the content of a <th> element.
Protected Overrides Function RenderBeforeContent() As String
' Check the TagKey property. If its value is
' HtmlTextWriterTag.TH, check the value of the
' SupportsBold property. If true, return the
' opening tag of a <b> element; otherwise, render
' the opening tag of a <font> element with a color
' attribute set to the hexadecimal value for red.
If TagKey = HtmlTextWriterTag.Th Then
If (SupportsBold) Then
Return "<b>"
Else
Return "<font color=""FF0000"">"
End If
End If
' Check whether the element being rendered
' is an <H4> element. If it is, check the
' value of the SupportsItalic property.
' If true, render the opening tag of the <i> element
' prior to the <H4> element's content; otherwise,
' render the opening tag of a <font> element
' with a color attribute set to the hexadecimal
' value for navy blue.
If TagKey = HtmlTextWriterTag.H4 Then
If (SupportsItalic) Then
Return "<i>"
Else
Return "<font color=""000080"">"
End If
End If
' Call the base method.
Return MyBase.RenderBeforeContent()
End Function
' Override the RenderAfterContent method to close
' styles opened during the call to the RenderBeforeContent
' method.
Protected Overrides Function RenderAfterContent() As String
' Check whether the element being rendered is a <th> element.
' If so, and the requesting device supports bold formatting,
' render the closing tag of the <b> element. If not,
' render the closing tag of the <font> element.
If TagKey = HtmlTextWriterTag.Th Then
If SupportsBold Then
Return "</b>"
Else
Return "</font>"
End If
End If
' Check whether the element being rendered is an <H4>.
' element. If so, and the requesting device supports italic
' formatting, render the closing tag of the <i> element.
' If not, render the closing tag of the <font> element.
If TagKey = HtmlTextWriterTag.H4 Then
If (SupportsItalic) Then
Return "</i>"
Else
Return "</font>"
End If
End If
' Call the base method.
Return MyBase.RenderAfterContent()
End Function
' Override the RenderBeforeTag method to render the
' opening tag of a <small> element to modify the text size of
' any <a> elements that this writer encounters.
Protected Overrides Function RenderBeforeTag() As String
' Check whether the element being rendered is an
' <a> element. If so, render the opening tag
' of the <small> element; otherwise, call the base method.
If TagKey = HtmlTextWriterTag.A Then
Return "<small>"
End If
Return MyBase.RenderBeforeTag()
End Function
' Override the RenderAfterTag method to render
' close any elements opened in the RenderBeforeTag
' method call.
Protected Overrides Function RenderAfterTag() As String
' Check whether the element being rendered is an
' <a> element. If so, render the closing tag of the
' <small> element; otherwise, call the base method.
If TagKey = HtmlTextWriterTag.A Then
Return "</small>"
End If
Return MyBase.RenderAfterTag()
End Function
End Class
End Namespace
Kommentarer
Konstruktorn Html32TextWriter skickar DefaultTabString fältvärdet till en andra version som har följande två parametrar:
writer, som tar en instans av TextWriter klassen.tabString, som tar en sträng som definierar rad indrag.
Gäller för
Html32TextWriter(TextWriter, String)
Initierar en ny instans av Html32TextWriter klassen som använder den angivna radindraget.
public:
Html32TextWriter(System::IO::TextWriter ^ writer, System::String ^ tabString);public Html32TextWriter(System.IO.TextWriter writer, string tabString);new System.Web.UI.Html32TextWriter : System.IO.TextWriter * string -> System.Web.UI.Html32TextWriterPublic Sub New (writer As TextWriter, tabString As String)Parametrar
- writer
- TextWriter
Det TextWriter som renderar HTML 3.2-innehållet.
Exempel
Följande kodexempel visar hur du använder en anpassad klass som härleds från Html32TextWriter klassen. Den har två konstruktorer, som är standard för alla klasser som härleds direkt eller indirekt från HtmlTextWriter klassen.
using System.IO;
using System.Web.UI;
namespace Examples.AspNet
{
public class CustomHtml32TextWriter : Html32TextWriter
{
// Create a constructor for the class
// that takes a TextWriter as a parameter.
public CustomHtml32TextWriter(TextWriter writer)
: this(writer, DefaultTabString)
{
}
// Create a constructor for the class that takes
// a TextWriter and a string as parameters.
public CustomHtml32TextWriter(TextWriter writer, String tabString)
: base(writer, tabString)
{
}
// Override the RenderBeforeContent method to render
// styles before rendering the content of a <th> element.
protected override string RenderBeforeContent()
{
// Check the TagKey property. If its value is
// HtmlTextWriterTag.TH, check the value of the
// SupportsBold property. If true, return the
// opening tag of a <b> element; otherwise, render
// the opening tag of a <font> element with a color
// attribute set to the hexadecimal value for red.
if (TagKey == HtmlTextWriterTag.Th)
{
if (SupportsBold)
return "<b>";
else
return "<font color=\"FF0000\">";
}
// Check whether the element being rendered
// is an <H4> element. If it is, check the
// value of the SupportsItalic property.
// If true, render the opening tag of the <i> element
// prior to the <H4> element's content; otherwise,
// render the opening tag of a <font> element
// with a color attribute set to the hexadecimal
// value for navy blue.
if (TagKey == HtmlTextWriterTag.H4)
{
if (SupportsItalic)
return "<i>";
else
return "<font color=\"000080\">";
}
// Call the base method.
return base.RenderBeforeContent();
}
// Override the RenderAfterContent method to close
// styles opened during the call to the RenderBeforeContent
// method.
protected override string RenderAfterContent()
{
// Check whether the element being rendered is a <th> element.
// If so, and the requesting device supports bold formatting,
// render the closing tag of the <b> element. If not,
// render the closing tag of the <font> element.
if (TagKey == HtmlTextWriterTag.Th)
{
if (SupportsBold)
return "</b>";
else
return "</font>";
}
// Check whether the element being rendered is an <H4>.
// element. If so, and the requesting device supports italic
// formatting, render the closing tag of the <i> element.
// If not, render the closing tag of the <font> element.
if (TagKey == HtmlTextWriterTag.H4)
{
if (SupportsItalic)
return "</i>";
else
return "</font>";
}
// Call the base method
return base.RenderAfterContent();
}
// Override the RenderBeforeTag method to render the
// opening tag of a <small> element to modify the text size of
// any <a> elements that this writer encounters.
protected override string RenderBeforeTag()
{
// Check whether the element being rendered is an
// <a> element. If so, render the opening tag
// of the <small> element; otherwise, call the base method.
if (TagKey == HtmlTextWriterTag.A)
return "<small>";
return base.RenderBeforeTag();
}
// Override the RenderAfterTag method to render
// close any elements opened in the RenderBeforeTag
// method call.
protected override string RenderAfterTag()
{
// Check whether the element being rendered is an
// <a> element. If so, render the closing tag of the
// <small> element; otherwise, call the base method.
if (TagKey == HtmlTextWriterTag.A)
return "</small>";
return base.RenderAfterTag();
}
}
}
' Create a custom HtmlTextWriter class that overrides
' the RenderBeforeContent and RenderAfterContent methods.
Imports System.IO
Imports System.Web.UI
Namespace Examples.AspNet
Public Class CustomHtml32TextWriter
Inherits Html32TextWriter
' Create a constructor for the class
' that takes a TextWriter as a parameter.
Public Sub New(ByVal writer As TextWriter)
Me.New(writer, DefaultTabString)
End Sub
' Create a constructor for the class that takes
' a TextWriter and a string as parameters.
Public Sub New(ByVal writer As TextWriter, ByVal tabString As String)
MyBase.New(writer, tabString)
End Sub
' Override the RenderBeforeContent method to render
' styles before rendering the content of a <th> element.
Protected Overrides Function RenderBeforeContent() As String
' Check the TagKey property. If its value is
' HtmlTextWriterTag.TH, check the value of the
' SupportsBold property. If true, return the
' opening tag of a <b> element; otherwise, render
' the opening tag of a <font> element with a color
' attribute set to the hexadecimal value for red.
If TagKey = HtmlTextWriterTag.Th Then
If (SupportsBold) Then
Return "<b>"
Else
Return "<font color=""FF0000"">"
End If
End If
' Check whether the element being rendered
' is an <H4> element. If it is, check the
' value of the SupportsItalic property.
' If true, render the opening tag of the <i> element
' prior to the <H4> element's content; otherwise,
' render the opening tag of a <font> element
' with a color attribute set to the hexadecimal
' value for navy blue.
If TagKey = HtmlTextWriterTag.H4 Then
If (SupportsItalic) Then
Return "<i>"
Else
Return "<font color=""000080"">"
End If
End If
' Call the base method.
Return MyBase.RenderBeforeContent()
End Function
' Override the RenderAfterContent method to close
' styles opened during the call to the RenderBeforeContent
' method.
Protected Overrides Function RenderAfterContent() As String
' Check whether the element being rendered is a <th> element.
' If so, and the requesting device supports bold formatting,
' render the closing tag of the <b> element. If not,
' render the closing tag of the <font> element.
If TagKey = HtmlTextWriterTag.Th Then
If SupportsBold Then
Return "</b>"
Else
Return "</font>"
End If
End If
' Check whether the element being rendered is an <H4>.
' element. If so, and the requesting device supports italic
' formatting, render the closing tag of the <i> element.
' If not, render the closing tag of the <font> element.
If TagKey = HtmlTextWriterTag.H4 Then
If (SupportsItalic) Then
Return "</i>"
Else
Return "</font>"
End If
End If
' Call the base method.
Return MyBase.RenderAfterContent()
End Function
' Override the RenderBeforeTag method to render the
' opening tag of a <small> element to modify the text size of
' any <a> elements that this writer encounters.
Protected Overrides Function RenderBeforeTag() As String
' Check whether the element being rendered is an
' <a> element. If so, render the opening tag
' of the <small> element; otherwise, call the base method.
If TagKey = HtmlTextWriterTag.A Then
Return "<small>"
End If
Return MyBase.RenderBeforeTag()
End Function
' Override the RenderAfterTag method to render
' close any elements opened in the RenderBeforeTag
' method call.
Protected Overrides Function RenderAfterTag() As String
' Check whether the element being rendered is an
' <a> element. If so, render the closing tag of the
' <small> element; otherwise, call the base method.
If TagKey = HtmlTextWriterTag.A Then
Return "</small>"
End If
Return MyBase.RenderAfterTag()
End Function
End Class
End Namespace
