ICSharpCode.TextEditor 是一款非常不錯的.NET代碼編輯控件，內置了多種高亮語言支持，同時完美支持中文，非常贊！先來看一下運行效果：
1 項目結構
這裡需要注意lib文件夾下導入的類庫，這個Demo需要這些dll.
2 代碼折疊
需要實現IFoldingStrategy中的 GenerateFoldMarkers 方法，代碼如下：
using ICSharpCode.TextEditor.Document;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace JackWangCUMT.WinForm
{
/// <summary>
/// The class to generate the foldings, it implements ICSharpCode.TextEditor.Document.IFoldingStrategy
/// </summary>
public class MingFolding : IFoldingStrategy
{
/// <summary>
/// Generates the foldings for our document.
/// </summary>
/// <param name="document">The current document.</param>
/// <param name="fileName">The filename of the document.</param>
/// <param name="parseInformation">Extra parse information, not used in this sample.</param>
/// <returns>A list of FoldMarkers.</returns>
public List<FoldMarker> GenerateFoldMarkers(IDocument document, string fileName, object parseInformation)
{
List<FoldMarker> list = new List<FoldMarker>();
//stack 先進先出
var startLines = new Stack<int>();
// Create foldmarkers for the whole document, enumerate through every line.
for (int i = 0; i < document.TotalNumberOfLines; i++)
{
// Get the text of current line.
string text = document.GetText(document.GetLineSegment(i));
if (text.Trim().StartsWith("#region")) // Look for method starts
{
startLines.Push(i);
}
if (text.Trim().StartsWith("#endregion")) // Look for method endings
{
int start = startLines.Pop();
// Add a new FoldMarker to the list.
// document = the current document
// start = the start line for the FoldMarker
// document.GetLineSegment(start).Length = the ending of the current line = the start column of our foldmarker.
// i = The current line = end line of the FoldMarker.
// 7 = The end column
list.Add(new FoldMarker(document, start, document.GetLineSegment(start).Length, i, 57, FoldType.Region, "..."));
}
//支持嵌套 {}
if (text.Trim().StartsWith("{")) // Look for method starts
{
startLines.Push(i);
}
if (text.Trim().StartsWith("}")) // Look for method endings
{
if (startLines.Count > 0)
{
int start = startLines.Pop();
list.Add(new FoldMarker(document, start, document.GetLineSegment(start).Length, i, 57, FoldType.TypeBody, "...}"));
}
}
// /// <summary>
if (text.Trim().StartsWith("/// <summary>")) // Look for method starts
{
startLines.Push(i);
}
if (text.Trim().StartsWith("/// <returns>")) // Look for method endings
{
int start = startLines.Pop();
//獲取注釋文本（包括空格）
string display = document.GetText(document.GetLineSegment(start + 1).Offset, document.GetLineSegment(start + 1).Length);
//remove ///
display = display.Trim().TrimStart('/');
list.Add(new FoldMarker(document, start, document.GetLineSegment(start).Length, i, 57, FoldType.TypeBody, display));
}
}
return list;
}
}
}
3 高亮配置
拷貝CSharp-Mode.xshd為 JackCSharp-Mode.xshd ，將其中的名字修改為： SyntaxDefinition name = "JackC#"，並添加高亮關鍵字，如下：
這樣代碼中出現的JackWang就會高亮。下面的代碼片段將自定義高亮文件進行加載，並用SetHighlighting進行設置，這裡一定注意目錄下必須有xshd的配置文件，否則高亮將失效。
1 textEditor.Encoding = System.Text.Encoding.UTF8;
2 textEditor.Font = new Font("Hack",12);
3 textEditor.Document.FoldingManager.FoldingStrategy = new JackWangCUMT.WinForm.MingFolding();
4 textEditor.Text = sampleCode;
5
6 //自定義代碼高亮
7 string path = Application.StartupPath+ "\\HighLighting";
8 FileSyntaxModeProvider fsmp;
9 if (Directory.Exists(path))
10 {
11 fsmp = new FileSyntaxModeProvider(path);
12 HighlightingManager.Manager.AddSyntaxModeFileProvider(fsmp);
13 textEditor.SetHighlighting("JackC#");
14
15
16 }
為了保持代碼適時進行折疊，這裡監聽文本變化，如下所示：
1 private void TextEditor_TextChanged(object sender, EventArgs e)
2 {
3 //更新，以便進行代碼折疊
4 textEditor.Document.FoldingManager.UpdateFoldings(null, null);
5 }
最後說明的是，我們可以定義一個格式化代碼的類，來格式化C#代碼：
