私は右ここに私のすべての情報を持っているかなり確信しているが、私はこのエラーSQL接続エラー40 000webhostのVisual Basic
http://puu.sh/qoZDQ/7294d6e682.png
私が使用したコード得続ける:(未鉱山)
を私はここにhttp://puu.sh/qoZXo/a391cba854.jpg(またはない、私のinfファイルからデータベース情報を使用
'SET THE CONNECTION BETWEEN VISUAL BASIC AND MYSQL DATABASE
Dim con As SqlConnection = New SqlConnection("Data Source=mysql9.000webhost.com;" & "Initial Catalog=databasename;" & "User ID=username;" & "Password=password;")
'A SET OF COMMAND IN MYSQL
Dim cmd As New SqlCommand
'SET A CLASS THAT SERVES AS THE BRIDGE BETWEEN A DATASET AND DATABASE FOR SAVING AND RETRIEVING DATA.
Dim da As New SqlDataAdapter
'SET A CLASS THAT CONSISTS SPECIFIC TABLE IN THE DATABASE
Dim dt As New DataTable
Dim sqlQuery As String
Dim result As Integer
Private Sub register(ByVal sqlQuery As String)
Try
'OPENING THE CONNECTION
con.Open()
'HOLDS THE DATA TO BE EXECUTED
With cmd
.Connection = con
.CommandText = sqlQuery
End With
'EXECUTE THE DATA
Result = cmd.ExecuteNonQuery
'CHECKING IF THE DATA HAS BEEN EXECUTED OR NOT
If result > 0 Then
MsgBox("User has been registered.")
Else
MsgBox("Failed to register the user.")
End If
con.Close()
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub login(ByVal sqlQuery As String)
Try
con.Open()
With cmd
.Connection = con
.CommandText = sqlQuery
End With
'FILLING THE DATA IN A SPECIFIC TABLE OF THE DATABASE
da.SelectCommand = cmd
dt = New DataTable
da.Fill(dt)
'DECLARING AN INTEGER TO SET THE MAXROWS OF THE TABLE
Dim maxrow As Integer = dt.Rows.Count
'CHECKING IF THE DATA IS EXIST IN THE ROW OF THE TABLE
If maxrow > 0 Then
MsgBox("Welcome " & dt.Rows(0).Item(4))
Else
MsgBox("Account does not exist.")
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try
con.Close()
End Sub
Private Sub btn_Register_Click(sender As Object, e As EventArgs) Handles btn_Register.Click
sqlQuery = "INSERT INTO `dbuser` (`user_name`, `user_username`, `user_pass`, `user_type`, `user_steamid`)" & "VALUES ('" & txtname.Text & "','" & txtusername.Text & "','" & txtpassword.Text & "','" & cbotype.Text & "','" & txtsteamid.Text & "')"
register(sqlQuery)
End Sub
Private Sub btn_Login_Click(sender As Object, e As EventArgs) Handles btn_Login.Click
sqlQuery = "SELECT * FROM `dbuser` WHERE user_username ='" & txtusername.Text & "' AND user_pass = '" & txtpassword.Text & "'"
login(sqlQuery)
End Sub
(と思う)右のユーザ名、パスワードおよびデータベース名を持っています)ので、私は公に自分の情報を掲載いけない単なる一例O
MySqlはMicrosoft SqlServerと同じものではありません – Plutonix
これを修正するにはどうすればよいですか? 私が見つけることができるvbのための "mysqlclient"がない、ただSqlClient – FBspitty
私は、MySQLの一部を固定してフレームワークをダウンロードし、 "import MySql.Data.MySqlClient"を実行しました。コードの問題またはサーバーの問題ですか? – FBspitty