似乎无法通过C＃连接到我的MySQL数据库

Question

like the title says, I cannot connect to my database via c#, I get the following exception when I try to open an connection:

Unable to connect to any of the specified MySQL hosts

But I can connect no problem with PHP using the exact same login info.

EDIT I am just changing databases. This connection string has worked for 2 years using a different database. I have tried it using Server, instead of Data Source, and UID/User ID instead of UserID with the same result

C#:

ProjectDBC = new MySqlConnection("Data Source=combinedsystems.ca;Database=combined_project;UserID=xxxxx;Password=xxxxx;");

PHP:

$db_user = "xxxxx";
$db_pass = "xxxxx";
$db_database = "combined_project"; 
$db_host = "combinedsystems.ca";

$mysqli = new mysqli($db_host, $db_user, $db_pass, $db_database);

It is probably something easy, but I just can't figure it out right now. Any ideas?

The database is hosted through hosteasysolutions.com if that makes any difference

Answer 1

Your connection string looks wrong... You need to specify Server , Uid and Pwd instead of Data Source , UserID and Password , or specify Data Source , User ID and Password (User ID has a space)

Server=combinedsystems.ca;Database=combined_project;Uid=xxxxx;Pwd=xxxxx;

OR

Data Source=combinedsystems.ca;Database=combined_project;User ID=xxxxx;Password=xxxxx;

Check this link for examples.

Answer 2

You don't specify a server, do you? I use following string to connect to mysql hosts:

Server=localhost;Database=db;UID=user;Password=pass

Answer 3

尝试在用户和ID之间使用空格，或者仅使用User =或UID =

Answer 4

确保自更改数据库以来，您的项目中没有定义（以某种方式-在某处）两个连接字符串！！！