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VB.NET DbConnectionStringBuilder.ConnectionString属性代码示例

本文整理汇总了VB.NET中System.Data.Common.DbConnectionStringBuilder.ConnectionString属性的典型用法代码示例。如果您正苦于以下问题:VB.NET DbConnectionStringBuilder.ConnectionString属性的具体用法?VB.NET DbConnectionStringBuilder.ConnectionString怎么用?VB.NET DbConnectionStringBuilder.ConnectionString使用的例子?那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在System.Data.Common.DbConnectionStringBuilder的用法示例。


在下文中一共展示了DbConnectionStringBuilder.ConnectionString属性的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。

示例1: Main

Sub Main()
    ' Create a new DbConnctionStringBuilder, and add items
    ' to the internal collection of key/value pairs.
    Dim builder As New DbConnectionStringBuilder()
    builder.Add("Data Source", "c:\MyData\MyDb.mdb")
    builder.Add("Provider", "Microsoft.Jet.Oledb.4.0")
    builder.Add("Jet OLEDB:Database Password", "*******")
    builder.Add("Jet OLEDB:System Database", _
        "c:\MyData\Workgroup.mdb")
    ' Set up row-level locking.
    builder.Add("Jet OLEDB:Database Locking Mode", 1)

    ' Display the contents of the connection string, which
    ' will now contain all the key/value pairs delimited with
    ' semicolons.
    Console.WriteLine(builder.ConnectionString)
    Console.WriteLine()

    ' Clear the DbConnectionStringBuilder, and assign a complete
    ' connection string to it, to demonstrate how
    ' the class parses connection strings.
    builder.Clear()
    builder.ConnectionString = _
        "Data Source=(local);Initial Catalog=AdventureWorks;" & _
        "Integrated Security=SSPI"

    ' The DbConnectionStringBuilder class has parsed the contents, 
    ' so you can work with any individual key/value pair.
    builder("Data Source") = "."
    Console.WriteLine(builder.ConnectionString)
    Console.WriteLine()

    ' Because the DbConnectionStringBuilder class doesn't 
    ' validate its key/value pairs, you can use this class
    ' to store any semicolon-delimited list. The following
    ' snippet places an arbitrary string into the ConnectionString
    ' property, changes one of the values, and then displays the
    ' resulting string.
    builder.Clear()
    builder.ConnectionString = _
        "Value1=10;Value2=20;Value3=30;Value4=40"
    builder("Value2") = 25
    Console.WriteLine(builder.ConnectionString)
    Console.WriteLine()

    builder.Clear()
    Try
        ' Assigning an invalid connection string
        ' throws an ArgumentException.
        builder.ConnectionString = "xxx"

    Catch ex As ArgumentException
        Console.WriteLine("Invalid connection string.")
    End Try

    Console.WriteLine()
    Console.WriteLine("Press Enter to finish.")
    Console.ReadLine()
End Sub
开发者ID:VB.NET开发者,项目名称:System.Data.Common,代码行数:59,代码来源:DbConnectionStringBuilder.ConnectionString


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