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HtmlTextWriter.NewLine Property

Gets or sets the line terminator string used by the HtmlTextWriter object.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

public override string NewLine { get; set; }

Property Value

Type: System.String
The line terminator string used by the current HtmlTextWriter.

The default line terminator string is a carriage return, followed by a line feed ("\r\n").

The line terminator string is written to the output stream whenever one of the WriteLine methods is called. If the NewLine property is set to null, the default new line character is used.

The following code example shows how to use a custom class, derived from the HtmlTextWriter class, that overrides the FilterAttributes method. When called, the FilterAttributes override checks whether the text writer renders any <label> or <a> elements. If so, the FilterAttributes method determines whether a style attribute is defined for the label. If no style is defined, the FilterAttributes method sets the default value for the style:color attribute to blue. The FilterAttributes method then uses the NewLine property to insert a line break in the markup tag and writes any other defined attributes.

// Override the FilterAttributes method to check whether  
// <label> and <anchor> elements contain specific attributes.       
protected override void FilterAttributes()
{
    // If the <label> element is rendered and a style 
    // attribute is not defined, add a style attribute  
    // and set its value to blue. 
    if (TagKey == HtmlTextWriterTag.Label)
    {
        if (!IsAttributeDefined(HtmlTextWriterAttribute.Style))
        {
            AddAttribute("style", EncodeAttributeValue("color:blue", true));
            Write(NewLine);
            Indent = 3;
            OutputTabs();
        }
    }

    // If an <anchor> element is rendered and an href 
    // attribute has not been defined, call the AddAttribute 
    // method to add an href attribute 
    // and set it to http://www.cohowinery.com. 
    // Use the EncodeUrl method to convert any spaces to %20. 
    if (TagKey == HtmlTextWriterTag.A)
    {
        if (!IsAttributeDefined(HtmlTextWriterAttribute.Href))
        {
            AddAttribute("href", EncodeUrl("http://www.cohowinery.com"));
        }
    }
    // Call the FilterAttributes method of the base class. 
    base.FilterAttributes();
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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