Question

我无法使用VB.NET 2012连接到Firebird数据库。我通过NuGet包管理器下载了Firebird实体框架提供程序。

我检查了以下参考文献已添加到项目中：

EntityFramework，EntityFramework.Firebird，EntityFramework.SqlServer和FirebirdSql.Data.FirebirdClient。

当我运行程序时，输出窗口显示以下内容：

A first chance exception of type 'System.Net.Sockets.SocketException' occurred in System.dll
A first chance exception of type 'FirebirdSql.Data.Common.IscException' occurred in FirebirdSql.Data.FirebirdClient.dll
A first chance exception of type 'FirebirdSql.Data.FirebirdClient.FbException' occurred in FirebirdSql.Data.FirebirdClient.dll
A first chance exception of type 'FirebirdSql.Data.FirebirdClient.FbException' occurred in FirebirdSql.Data.FirebirdClient.dll

我没有在应用程序中显示任何错误，但没有任何反应

这是我的代码：

Imports FirebirdSql.Data.FirebirdClient
Imports System.Text
Imports System.Net

Public Class Form1

    Dim con As FbConnection
    Dim cs As FbConnectionStringBuilder

    Public Sub New()

        InitializeComponent()

        cs = New FbConnectionStringBuilder
        cs.Database = "C:\database.fdb"
        cs.ServerType = FbServerType.Default
        cs.UserID = "SYSDBA"
        cs.Password = "password"

    End Sub

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles Me.Load

        con = New FbConnection(cs.ToString)
        con.Open()

        Dim sCmd As FbCommand
        Dim sql As String
        Dim ds As FbDataReader

        sql = "SELECT something FROM TABLE"

        sCmd = New FbCommand()
        sCmd.Connection = con
        sCmd.CommandText = sql
        ds = sCmd.ExecuteReader

        Dim str As New StringBuilder

        While (ds.Read)

            MsgBox(ds.GetString(0))

        End While

        ds.Close()

        End

    End Sub

End Class

我已经尝试过运行各种版本的Firebird，但我确实需要一些帮助。

Answer 1

答案很简单。因为我使用的是Firebird客户端，所以ServerType应该设置为Embedded，因为它包含一个包含服务器本身的特殊客户端库。

Answer 2

您的连接字符串缺少Firebird运行的主机名。

.NET 2012连接到Firebird数据库

2 个答案: