無法連接到mysql數據庫

Question

VB.NET Express 2010。

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim connection As MySqlConnection
    connection = New MySqlConnection()

    connection.ConnectionString = "Server=example.com; Uid=***; Pwd=***; Database=***;"

    Try
        connection.Open()
        MessageBox.Show("Connection Opened Successfully")
        connection.Close()
    Catch mysql_error As MySqlException
        MessageBox.Show("Error Connecting to Database: " & mysql_error.Message)
    Finally
        connection.Dispose()
    End Try
End Sub

我也導入了MySql.Data.MySqlClient：

Imports MySql.Data.MySqlClient

但是，當我單擊按鈕時，整個應用程序將凍結。

我已經添加了對MySql.Data.dll的引用。 路徑：

C:\Program Files\MySQL\MySQL Connector Net 6.4.4\Assemblies\v4.0\MySql.Data.dll

此類文件是通過從http://dev.mysql.com/downloads/connector/net/下載的安裝程序安裝的

這是為什么？

Answer 1

如果尚未更改連接字符串的server參數以指向本地安裝，則可以解釋為什么掛起它。