使用 VB.Net 备份 SQLite 数据库 [英] Backup SQLite database with VB.Net

问题描述

我没有找到 VB.NET 的文档

尝试调整

解决方案

这是 C# 代码的直接翻译:

Using source As New SQLiteConnection("Data Source=ActiveDb.db; Version=3;"),destination As New SQLiteConnection("Data Source=BackupDb.db; Version=3;")源.Open()目的地.Open()source.BackupDatabase(destination, "main", "main", -1, Nothing, 0)结束使用

I don't find documentation for VB.NET

Trying to adapt the code of the answer on Sqlite Online Backup Using System.Data.Sqlite

The code from @Elias is:

using(var source = new SQLiteConnection("Data Source=ActiveDb.db; Version=3;"))
using(var destination = new SQLiteConnection("Data Source=BackupDb.db; Version=3;"))
{
source.Open();
destination.Open();
source.BackupDatabase(destination, "main", "main", -1, null, 0);
}

and my code looks like:

Dim conn = New SQLiteConnection("Data Source=MyBase.sqlite;Version=3;Password=myPassword;foreign keys=true")

Dim connbackup = New SQLiteConnection("Data Source=MyBaseBackup.sqlite; Version=3;Password=myPassword;foreign keys=true")

    Try
        Using (conn)

            conn.Open()
            connbackup.Open()

            conn.BackupDatabase(connbackup, "main", "main", -1, null, 0)

        End Using

    Catch ex As Exception
        MsgBox(ex.ToString())
    End Try

Visual Studio marks on red "Null" is not declared and I don´t have any clue about how to solve the error. I think is the "callback" what is wrong

解决方案

Here is the direct translation of that C# code:

Using source As New SQLiteConnection("Data Source=ActiveDb.db; Version=3;"),
      destination As New SQLiteConnection("Data Source=BackupDb.db; Version=3;")
    source.Open()
    destination.Open()
    source.BackupDatabase(destination, "main", "main", -1, Nothing, 0)
End Using

这篇关于使用 VB.Net 备份 SQLite 数据库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！