搶在MySQL在VB.NET

Question

一列

我剛剛得知的MySQL在VB.NET，但我有一種併發症..

當我抓住一個SELECT查詢，我想 - 讓說的「用戶名'列中的每一行。我會怎麼做？

MySQL.CommandText = "SELECT * FROM online" 
MySQL.ExecuteNonQuery() 
Label1.Text = 'usernamehere' 

謝謝:)

Answer 1

Public Sub CreateMySqlDataReader(mySelectQuery As String, myConnection As MySqlConnection) 
    Dim myCommand As New MySqlCommand(mySelectQuery, myConnection) 
    myConnection.Open() 
    Dim myReader As MySqlDataReader 
    myReader = myCommand.ExecuteReader() 
    Try 
    While myReader.Read() 
     Console.WriteLine(myReader.GetString(0)) 
    End While 
Finally 
    myReader.Close 
    myConnection.Close 
    End Try 
End Sub 

上找到：http://dev.mysql.com/doc/refman/5.0/es/connector-net-examples-mysqlcommand.html#connector-net-examples-mysqlcommand-executereader

而且作爲獎金。如果你打算在查詢中引入一些參數，我建議你查看一下準備好的語句。