SqlConnectionStringBuilder.Clear 方法

定义

命名空间:

System.Data.SqlClient

程序集:

System.Data.dll

清除实例的内容 SqlConnectionStringBuilder 。

public:
 override void Clear();

public override void Clear();

override this.Clear : unit -> unit

Public Overrides Sub Clear ()

示例

以下示例演示如何调用该方法 Clear 。 此示例使用 SqlConnectionStringBuilder 一些键/值对填充，然后调用 Clear 该方法并显示结果。

using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder();
        builder.DataSource = "(local)";
        builder.IntegratedSecurity = true;
        builder.InitialCatalog = "AdventureWorks";
        Console.WriteLine("Initial connection string: " + builder.ConnectionString);

        builder.Clear();
        Console.WriteLine("After call to Clear, count = " + builder.Count);
        Console.WriteLine("Cleared connection string: " + builder.ConnectionString);
        Console.WriteLine();

        Console.WriteLine("Press Enter to continue.");
        Console.ReadLine();
    }
}

Imports System.Data.SqlClient
    
Module Module1
    Sub Main()
        Dim builder As New SqlConnectionStringBuilder
        builder.DataSource = "(local)"
        builder.IntegratedSecurity = True
        builder.InitialCatalog = "AdventureWorks"
        Console.WriteLine("Initial connection string: " & builder.ConnectionString)

        builder.Clear()
        Console.WriteLine("After call to Clear, count = " & builder.Count)
        Console.WriteLine("Cleared connection string: " & builder.ConnectionString)
        Console.WriteLine()

        Console.WriteLine("Press Enter to continue.")
        Console.ReadLine()
    End Sub
End Module

注解

该方法 Clear 从中删除 SqlConnectionStringBuilder所有键/值对，并重置所有相应的属性。 这包括将 Count 属性设置为 0，并将属性设置为 ConnectionString 空字符串。

另请参阅

• ADO.NET 中的连接字符串
• ADO.NET 概述