检索SQL Server中的表的DataTable信息

Question

我需要获取列名,主键,外键和其他架构信息.这DataTable堂课似乎包含了所有这些.

下面是我到目前为止的当前代码.有了它,我可以检索除外键之外的所有信息.我期待它们被定义,DataTable.Constraints但它们不是.这是我目前的代码:

    private static DataTable LoadSchemaInfo(string tableName, SqlConnection connection)
    {
        string cmdText = "SELECT * FROM [" + tableName + "] WHERE 1 = 0";

        // Create a SqlDataAdapter to get the results as DataTable
        var sqlDataAdapter = new SqlDataAdapter(cmdText, connection);

        // Create a new DataTable
        var dataTable = new DataTable(tableName);

        // Fill the DataTable with the result of the SQL statement
        sqlDataAdapter.FillSchema(dataTable, SchemaType.Source);

        return dataTable;
    }

知道如何检索所有信息或如何获取FK(最好不使用纯SQL语法,因为我会缺少一些编译时检查)？

Answer 1

使用SMO你可以做到这一点......

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
using Microsoft.SqlServer.Management.Smo;
using Microsoft.SqlServer.Management.Smo.Agent;


// Add references: (in c:\Program Files\Microsoft SQL Server\90\SDK\Assemblies\)
// Microsoft SqlServer.ConnectionInfo
// Microsoft SqlServer.Management.Sdk.Sfc
// Microsoft SqlServer.Smo

namespace SMO
{
    class Program
    {
        static Database db;

        static void Main(string[] args)
        {
            Microsoft.SqlServer.Management.Smo.Server server;

            SqlConnection sqlConnection = new SqlConnection(@"Integrated Security=SSPI; Data Source=LOCAL");
            //build a "serverConnection" with the information of the "sqlConnection"
            Microsoft.SqlServer.Management.Common.ServerConnection serverConnection =
              new Microsoft.SqlServer.Management.Common.ServerConnection(sqlConnection);

            //The "serverConnection is used in the ctor of the Server.
            server = new Server(serverConnection);

            db = server.Databases["TestDB"];

            Table tbl;
            tbl = db.Tables["Sales"];
            foreach (ForeignKey fk in tbl.ForeignKeys)
            {
                Console.WriteLine("Foreign key {0} references table {1} and key {2}", fk.Name, fk.ReferencedTable, fk.ReferencedKey);
            } 
        }
    }
}