Question

我使用C＃创建SQL Server视图，然后打开访问数据库并将表链接到访问。 create view语句，open数据库语句和link语句工作得很好 BUT 这里的catch是它总是将表链接为只读。我需要添加或更新当前的代码，以便视图不会始终以只读方式链接？

string MasterDatabase = "R:\\Testing\\MasterDatabase.mdb";
DAO.Database dd;
DAO.DBEngine db = new DAO.DBEngine();
DAO.TableDef tdf9;
bool found = false;
DAO.TableDef tdf1;
string Table = "ServiceEntranceLog";
string TableAccess = "Service_Entrance_Log";

using (var connection = new SqlConnection(ConnectionStringHere))
using (var command = connection.CreateCommand())
{   
            using (var command4 = connection.CreateCommand())
            {
                            command4.CommandText = "CREATE VIEW HelperView" AS SELECT * FROM monster.ServiceEntranceLog";
                            command4.ExecuteNonQuery();
            }
}
if (_combobox1.SelectedItems.Contains("MasterDatabase"))
{
            dd = db.OpenDatabase(CRDB);
            try
            {
                            string[] tableNames = new string[1] { TableAccess };
                            for (int q = tableNames.GetLowerBound(0); q <= tableNames.GetUpperBound(0); q++)
                            {
                                            foreach (DAO.TableDef tabledef in dd.TableDefs)
                                            {
                                                            string name = tableNames[q];
                                                            if (tabledef.Name == name) { found = true; }
                                                            try { if (found) { dd.TableDefs.Delete(name); } }
                                                            catch { }
                                            }
                            }
            }
            catch { }
            tdf1 = dd.CreateTableDef(TableAccess);
            tdf1.Connect = connectionString;
            tdf1.SourceTableName = Table;
            dd.TableDefs.Append(tdf1);
}

Answer 1

Alritey，所以似乎问题是我需要在表中链接到访问时定义主键，以便表可以更新。使用这种语法可以实现技巧

dd.Execute "CREATE UNIQUE INDEX SomeIndex ON SomeTable (PrimaryKeyColumn) WITH PRIMARY"

链接表显示为只读

1 个答案: