如何在C＃中获取Ms Access表的主键

Question

在需要连接和tableName的情况下，我需要形成Microsoft Access Table主键的字段或字段（只是字段的名称）。

Answer 1

ok, I guess I found it. It should work for all oledb and is sth. like :

public static List<string> getKeyNames(String tableName, DbConnection conn)
    {
        var returnList = new List<string>();


        DataTable mySchema = (conn as OleDbConnection).
            GetOleDbSchemaTable(OleDbSchemaGuid.Primary_Keys,
                                new Object[] {null, null, tableName});


        // following is a lengthy form of the number '3' :-)
        int columnOrdinalForName = mySchema.Columns["COLUMN_NAME"].Ordinal;

        foreach (DataRow r in mySchema.Rows)
        {
            returnList.Add(r.ItemArray[columnOrdinalForName].ToString());
        }

        return returnList;
    }