ADO.Net:从 SQL 服务器表中获取表定义

ADO.Net : Get table definition from SQL server tables(ADO.Net:从 SQL 服务器表中获取表定义)

问题描述

我正在使用 C# 编写一个返回有关表的以下信息的方法:列名、列类型、列大小、外键.

I am using C# to write a method that returns the following information about a table: column names, column types, column sizes, foreign keys.

有人可以为我指出正确的方向吗?

Can someone point me in the right direction on how to accomplish this ?

推荐答案

要获取 FK 和 Schema，您应该能够使用:

To get the FK and Schema you should be able to use:

DA.FillSchema() 

DS.Table("Name").PrimaryKey 

或者使用下面演示的方法调用 sp_fkey

OR calling sp_fkey using the method demonstrated below

代码片段来自 AND 另一个链接

    private void LoanSchema()
    {

         private List<String> tablesList = new List<String>();
         private Dictionary<String, String> columnsDictionary = new Dictionary<String, String>();

          string connectionString = "Integrated Security=SSPI;" +
          "Persist Security Info = False;Initial Catalog=Northwind;" +
          "Data Source = localhost";
          SqlConnection connection = new SqlConnection();
          connection.ConnectionString = connectionString;
          connection.Open();

          SqlCommand command = new SqlCommand();
          command.Connection = connection;
          command.CommandText = "exec sp_tables";
          command.CommandType = CommandType.Text;

          SqlDataReader reader = command.ExecuteReader();

           if (reader.HasRows)
           {
               while (reader.Read())
                  tablesList.Add(reader["TABLE_NAME"].ToString());
           }
           reader.Close();

           command.CommandText = "exec sp_columns @table_name = '" +
           tablesList[0] + "'";
           command.CommandType = CommandType.Text;
           reader = command.ExecuteReader();

            if (reader.HasRows)
            {
                while (reader.Read())
                          columnsDictionary.Add(reader["COLUMN_NAME"].ToString(), reader["TYPE_NAME"].ToString());
             }
}

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