添加项目文件。

Source/Core/MAX.Framework/Commons/KeyValue.cs

@@ -0,0 +1,34 @@
+using System.Text;
+
+namespace MAX.Framework.Commons;
+
+public struct KeyValue
+{
+	public KeyValue(string key, string value)
+	{
+		Key = key;
+		Value = value;
+	}
+
+	public string Key { get; set; }
+	public string Value { get; set; }
+
+	public override string ToString()
+	{
+		StringBuilder stringBuilder = new();
+		stringBuilder.Append('[');
+		if (Key != null)
+		{
+			stringBuilder.Append(Key.ToString());
+		}
+
+		stringBuilder.Append(", ");
+		if (Value != null)
+		{
+			stringBuilder.Append(Value.ToString());
+		}
+
+		stringBuilder.Append(']');
+		return stringBuilder.ToString();
+	}
+}