如何编写从 ide 中删除注释的方法？

Question

提议的代码旨在使用笔记应用程序的界面来删除所有笔记。但是，在编写此解决方案时，方法 DeleteAllNotes() 不会 return Note Repository DeleteAllNotes() 方法的代码值。

    public Note DeleteAllNotes(int Id)
    {
      DataTable dt = new DataTable();
      string sql = $@"DELETE all Notes where id = {Id}";
      using (SqlConnection conn = new SqlConnection(connStr))
      {
        conn.Open();
        SqlCommand cmd = new SqlCommand(sql, conn);
        cmd.CommandType = CommandType.Text;
        cmd.ExecuteNonQuery();

      }
    }

它应该运行一段代码，执行时可以在行或列中删除整个 table 数据。

参考文献：

1)CS1061错误的解释： https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/compiler-messages/cs1061

2) C# 中的方法 https://docs.microsoft.com/en-us/dotnet/csharp/methods

3) C# 中的静态 Class 成员 https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/static-classes-and-static-class-members

4) 摘要和密封 Class 成员：https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/abstract-and-sealed-classes-and-class-members

参考资料：微软官方文档。

Answer 1

如果您想从 Notes table

中删除 Id 给出的记录

//DONE:  We delete, that why we return bool (has items actually been deleted), note Note
//TODO: if connStr is static, declare DeleteAllNotes as static as well 
public bool DeleteAllNotes(int Id) {
  //DONE: Syntax: correct one is "Delete From table Where condition(s)" 
  //DONE: SQL Parametrized; do not hardcode parameters - "{Id}"
  string sql =
     @"delete 
         from Notes 
        where id = @prm_id";

  using (SqlConnection conn = new SqlConnection(connStr)) {
    conn.Open();

    //DONE: wrap IDisposable into using
    using (SqlCommand cmd = new SqlCommand(sql, conn)) {
      cmd.Parameters.Add("@prm_id", SqlDbType.Int).Value = Id;

      return cmd.ExecuteNonQuery() > 0;
    }
  }
}

如何编写从 ide 中删除注释的方法？

How to write a method to delete notes from a ide?

c#

sql

ssms