SocketException：沒有這樣的主機是已知的

我想從我的 asp 頁面連接到 mysql 數據庫。因此，根據我的託管服務提供商告訴我的內容，我使用了連接字元串，其中伺服器被指定為“localhost:3309”

Dim myConnection As MySqlConnection = New MySqlConnection("server=localhost:3309; user id=TID; password=TPWD; database=TDB; pooling=false;")

Dim strSQL As String = "SELECT * from Device_Data"

Dim myDataAdapter As MySqlDataAdapter = New MySqlDataAdapter(strSQL, myConnection)
Dim myDataSet As DataSet = New DataSet()
myDataAdapter.Fill(myDataSet, "Device_Data")

MySQLDataGrid.DataSource = myDataSet
MySQLDataGrid.DataBind()

但是當我執行這個頁面時，我得到了這個錯誤

[SocketException (0x2af9): No such host is known]
System.Net.Dns.GetAddrInfo(String name) +6134386
System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) +136
System.Net.Dns.GetHostEntry(String hostNameOrAddress) +109
MySql.Data.Common.StreamCreator.GetDnsHostEntry(String hostname) +123

[Exception: Call to GetHostEntry failed after 00:00:02.2499197 while querying for hostname 'localhost:3309': SocketErrorCode=HostNotFound, ErrorCode=11001, NativeErrorCode=11001.]
MySql.Data.Common.StreamCreator.GetDnsHostEntry(String hostname) +405
MySql.Data.Common.StreamCreator.GetStream(UInt32 timeout) +457
MySql.Data.MySqlClient.NativeDriver.Open() +215

[MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts.]
MySql.Data.MySqlClient.NativeDriver.Open() +283
MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings) +51
MySql.Data.MySqlClient.MySqlConnection.Open() +362
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +123
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +319
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +92
show.form1_Load(Object sender, EventArgs e) in 
System.Web.UI.Control.OnLoad(EventArgs e) +91
System.Web.UI.Control.LoadRecursive() +74
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207

所以這是伺服器問題？？如果是，那麼他們應該怎麼做才能解決這個問題？當聯繫伺服器人員時，他們說這是我的編碼問題.. 他們是對的嗎？

MySQL ADO.NET 連接器的正確連接字元串是

Server=localhost;Port=3309;Database=Test;Uid=username;Pwd=password;

嘗試server=localhost; port=3309

引用自：https://stackoverflow.com/questions/4970177