Add sample annotations

Author: stulzq

sample/CanalSharp.SimpleClient/Program.cs

@@ -34,6 +34,10 @@ static void Main(string[] args)
             }
         }
 
+        /// <summary>
+        /// 输出数据
+        /// </summary>
+        /// <param name="entrys">一个entry表示一个数据库变更</param>
         private static void PrintEntry(List<Entry> entrys)
         {
             foreach (var entry in entrys)
@@ -47,6 +51,7 @@ private static void PrintEntry(List<Entry> entrys)
 
                 try
                 {
+                    //获取行变更
                     rowChange = RowChange.Parser.ParseFrom(entry.StoreValue);
                 }
                 catch (Exception e)
@@ -56,10 +61,13 @@ private static void PrintEntry(List<Entry> entrys)
 
                 if (rowChange != null)
                 {
+                    //变更类型 insert/update/delete 等等
                     EventType eventType = rowChange.EventType;
+                    //输出binlog信息 表名 数据库名 变更类型
                     Console.WriteLine(
                         $"================> binlog[{entry.Header.LogfileName}:{entry.Header.LogfileOffset}] , name[{entry.Header.SchemaName},{entry.Header.TableName}] , eventType :{eventType}");
 
+                    //输出 insert/update/delete 变更类型列数据
                     foreach (var rowData in rowChange.RowDatas)
                     {
                         if (eventType == EventType.Delete)
@@ -83,10 +91,15 @@ private static void PrintEntry(List<Entry> entrys)
             }
         }
 
+        /// <summary>
+        /// 输出每个列的详细数据
+        /// </summary>
+        /// <param name="columns"></param>
         private static void PrintColumn(List<Column> columns)
         {
             foreach (var column in columns)
             {
+                //输出列明 列值 是否变更
                 Console.WriteLine($"{column.Name} ： {column.Value}  update=  {column.Updated}");
             }
         }