添加项目文件。

TightWiki.Engine/WikiString.cs

@@ -0,0 +1,43 @@
+namespace TightWiki.Engine
+{
+    public class WikiString
+    {
+        public WikiString()
+        {
+        }
+
+        public WikiString(string value)
+        {
+            Value = value;
+        }
+
+        public string Value { get; set; } = string.Empty;
+
+        public int Length => Value.Length;
+
+        public void Replace(string oldValue, string newValue)
+        {
+            Value = Value.Replace(oldValue, newValue);
+        }
+
+        public void Insert(int position, string value)
+        {
+            Value = Value.Insert(position, value);
+        }
+
+        public void Clear()
+        {
+            Value = string.Empty;
+        }
+
+        public void Append(string value)
+        {
+            Value += value;
+        }
+
+        public new string ToString()
+        {
+            return Value;
+        }
+    }
+}