Sql server 在按钮上连接SQL Server单击VB.net
如何在单击按钮时连接SQL Server?Sql server 在按钮上连接SQL Server单击VB.net,sql-server,vb.net,connection-string,Sql Server,Vb.net,Connection String,如何在单击按钮时连接SQL Server? 我想在文本框中手动输入服务器、用户名和密码。 我这里有一个代码,但我不确定它是否正确。 Private Sub SQLConnect_Click(sender As Object, e As EventArgs) Handles SQLConnect.Click Dim con As SqlConnection = New SqlConnection("Server=" & SQLServer.Text & ";Databas
我想在文本框中手动输入服务器、用户名和密码。
我这里有一个代码,但我不确定它是否正确。
Private Sub SQLConnect_Click(sender As Object, e As EventArgs) Handles SQLConnect.Click
Dim con As SqlConnection = New SqlConnection("Server=" & SQLServer.Text & ";Database=GameDB;User Id=" & SQLUser.Text & ";Password=" & SQLPwd.Text & ";")
con.Open()
MsgBox("Successfully Connected!")
'con.Close()
End Sub
Idk如何检查连接是否正确。如果输入正确或错误。请给我完整的代码示例。谢谢大家! 参数名称应该是
Password
,而不是Pwd
,为什么要将服务器密码给用户…曾经?你在说什么?我将要求用户输入服务器密码以使用我的应用程序。我尝试使用此代码,但它显示,“'builder'未声明”
Imports System.Data.SqlClient
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connetionString As String
Dim cnn As SqlConnection
connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password"
cnn = New SqlConnection(connetionString)
Try
cnn.Open()
MsgBox("Connection Open ! ")
cnn.Close()
Catch ex As Exception
MsgBox("Can not open connection ! ")
End Try
End Sub
End Class
Dim builder As New SqlConnectionStringBuilder()
builder.DataSource = SQLServer.Text
builder.InitialCatalog = "GameDB"
builder.UserID = SQLUser.Text
builder.Password = SQLPwd.Text
builder.ApplicationName = "MyGame"
Using connection As New SqlConnection(builder.ConnectionString)
Try
connection.Open()
MsgBox("Connection can be opened")
Catch ex As Exception
MsgBox("Connection can not be opened: " & vbCrLf & ex)
End Try
End Using