当前位置导航:炫浪网>>网络学院>>网页制作>>ASP教程

ADO.NET:使用ADO.NET连接文本文件

  try
{
// create a new ADOConnection to the text file through ODBC and an existing Data Source
ADOConnection conn = new ADOConnection("Provider=MSDASQL;DSN=registrations;");
// create a DataSet Command that selects all the records from the registration.txt table (which in this case is a file)
ADODataSetCommand AdoCmd = new ADODataSetCommand("SELECT * FROM registrations.txt", conn);

// fill the dataset with the registration.txt table
AdoCmd.FillDataSet(dataSet1, "registrations.txt");
DataTable ContactTable = dataSet1.Tables[0];
int count = 0;

// loop through each row of the table and fill 15 rows of the listview
foreach (DataRow dr in ContactTable.Rows)
{
listView3.ListItems[count].Text = dr["LastName"].ToString();
listView3.ListItems[count].SetSubItem(0, dr["FirstName"].ToString());
listView3.ListItems[count].SetSubItem(1, dr["Company"].ToString());
listView3.ListItems[count].SetSubItem(2, dr["Address"].ToString());
count++;
if (count > 15)
{
break;
}
}
}
catch(ADOException ae)
{
Console.WriteLine(ae.Message.ToString());
}


That's all there is to it. This should also give you an idea of how to connect to databases through ODBC such as Oracle, Informix, Sybase, or Interbase. All you need to do is set up the appropriate Data Source through the Administration tools and use the code above to access your tables.


 
相关内容
赞助商链接