XhtmlTextWriter.OnAttributeRender Method
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Determines whether the specified XHTML attribute and its value can be rendered to the current markup element.
protected:
override bool OnAttributeRender(System::String ^ name, System::String ^ value, System::Web::UI::HtmlTextWriterAttribute key);
protected override bool OnAttributeRender (string name, string value, System.Web.UI.HtmlTextWriterAttribute key);
override this.OnAttributeRender : string * string * System.Web.UI.HtmlTextWriterAttribute -> bool
Protected Overrides Function OnAttributeRender (name As String, value As String, key As HtmlTextWriterAttribute) As Boolean
- name
- String
The XHTML attribute to render.
- value
- String
The value assigned to the XHTML attribute.
The HtmlTextWriterAttribute enumeration value associated with the XHTML attribute.
true
if the attribute is rendered to the page; otherwise, false
.
The following code example demonstrates how to override the OnAttributeRender method to check whether a size
attribute is rendered for any of the elements that are rendered by this text writer. If a size
attribute is rendered, the code checks whether its value is 8 point. If so, the OnAttributeRender method returns true
, allowing the attribute and its value to render. If the value is other than 8 point, the OnAttributeRender method returns false
, and the attribute and its value are not rendered. If the key parameter of the OnAttributeRender method does not match the Size attribute, the base functionality of the OnAttributeRender method is called, as defined in the XhtmlTextWriter class.
This code example is part of a larger example provided for the XhtmlTextWriter class.
// Override the OnAttributeRender method to
// allow this text writer to render only eight-point
// text size.
protected override bool OnAttributeRender(string name,
string value,
HtmlTextWriterAttribute key)
{
if (key == HtmlTextWriterAttribute.Size)
{
if (String.Compare(value, "8pt") == 0)
{
return true;
}
else
{
return false;
}
}
else
{
return base.OnAttributeRender(name, value, key);
}
}
' Override the OnAttributeRender method to
' allow this text writer to render only eight-point
' text size.
Overrides Protected Function OnAttributeRender(ByVal name As String, _
ByVal value As String, _
ByVal key As HtmlTextWriterAttribute _
) As Boolean
If key = HtmlTextWriterAttribute.Size Then
If String.Compare(value, "8pt") = 0 Then
Return True
Else
Return False
End If
Else
Return MyBase.OnAttributeRender(name, value, key)
End If
End Function
Product | Versions |
---|---|
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET feedback
.NET is an open source project. Select a link to provide feedback: