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How do I highlight the background of certain tags in HTML or XML dynamically at runtime?

Platform: WinForms |
Control: EditControl |
Published Date: April 30, 2011 |
Last Revised Date: July 10, 2014

 

It is possible to highlight the background of certain tags in HTML or XML using the EditControl's ability to add runtime configuration. We have considered the following tags as an example here - . The background will be highlighted with a yellow color just like in the ASP.NET files (aspx/ascx). Please refer to the following code snippets for information in this regard.

C#

this.editControl1.ApplyConfiguration(KnownLanguages.HTML);

// Create a format and set its attributes

ISnippetFormat formatMethod = this.editControl1.Language.Add("CodeBehind");

formatMethod.FontColor = Color.Black;

formatMethod.Font = new Font("Courier New",10);

formatMethod.BackColor = Color.Yellow;

// Create a lexem that belongs to this format

ConfigLexem configLex = new ConfigLexem("<%@", "%>", FormatType.Custom, false);

configLex.IsBeginRegex = false;

configLex.IsEndRegex = false;

configLex.ContinueBlock = ".+";

configLex.IsContinueRegex = true;

configLex.FormatName = "CodeBehind";

this.editControl1.Language.Splits.Add("<%@");

this.editControl1.Language.Splits.Add("%>");

// Add it to the current language's lexems collection

this.editControl1.Language.Lexems.Add(configLex);

this.editControl1.Language.ResetCaches();

VB

Me.editControl1.ApplyConfiguration(KnownLanguages.HTML)

' Create a format and set its attributes

Dim formatMethod As ISnippetFormat = Me.editControl1.Language.Add("CodeBehind")

formatMethod.FontColor = Color.Black

formatMethod.Font = New Font("Courier New", 10)

formatMethod.BackColor = Color.Yellow

' Create a lexem that belongs to this format

Dim configLex As New ConfigLexem("<%@", "%>", FormatType.Custom, False)

configLex.IsBeginRegex = False

configLex.IsEndRegex = False

configLex.ContinueBlock = ".+"

configLex.IsContinueRegex = True

configLex.FormatName = "CodeBehind"

Me.editControl1.Language.Splits.Add("<%@")

Me.editControl1.Language.Splits.Add("%>")

' Add it to the current language's lexems collection

Me.editControl1.Language.Lexems.Add(configLex)

Me.editControl1.Language.ResetCaches()

The test application attached below illustrates how this can be done.

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