Remove 方法

Removes a Variable object from the Variables collection.

命名空间：  Microsoft.SqlServer.Dts.Runtime
程序集：  Microsoft.SqlServer.ManagedDTS（在 Microsoft.SqlServer.ManagedDTS.dll 中）

语法

声明
Public Sub Remove ( _
    index As Object _
)
用法
Dim instance As Variables
Dim index As Object

instance.Remove(index)

public void Remove(
    Object index
)

public:
void Remove(
    Object^ index
)

member Remove : 
        index:Object -> unit 

public function Remove(
    index : Object
)

参数

• index
  类型：System. . :: . .Object
  The name, ID, description, or index of the Variable object to remove from the collection.

示例

The following code example adds a variable to an empty package. The variable is named myCustomVar, is given a value of 3, and is located in the User namespace. The variable is then removed using the Remove method.

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;

namespace Add_Remove_Vars
{
    class Program
    {
        static void Main(string[] args)
        {
            Package pkg = new Package();
            Variables pkgVars = pkg.Variables;
            Variable myVar = pkg.Variables.Add("myCustomVar", false, "User", "3");

            // Verify whether the variable is in the collection now.
            Boolean hasMyVar = pkg.Variables.Contains("myCustomVar");
            Console.WriteLine("The variable was found? {0}", hasMyVar);

            Console.WriteLine("---------------------------");
            // Loop over the collection using the foreach keyword.
            foreach (Variable pkgVar in pkgVars)
            {
                // Print variables only from the User namespace.
                if (pkgVar.Namespace == "User")
                {
                Console.WriteLine("Variable: {0}, {1}", pkgVar.Name, pkgVar.Value.ToString());
                 }
            }
            Console.WriteLine("---------------------------");
            // Remove the variable from the namespace.
            pkg.Variables.Remove("myCustomVar");

            // Loop over the collection again.
            foreach (Variable pkgVar in pkgVars)
            {
                // Print variables only from the User namespace. Nothing should show.
                if (pkgVar.Namespace == "User")
                {
                    Console.WriteLine("Variable: {0}, {1}", pkgVar.Name, pkgVar.Value.ToString());
                }
            }
            Console.WriteLine("---------------------------");
            Console.WriteLine("");
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace Add_Remove_Vars
    Class Program
        Shared  Sub Main(ByVal args() As String)
            Dim pkg As Package =  New Package() 
            Dim pkgVars As Variables =  pkg.Variables 
            Dim myVar As Variable =  pkg.Variables.Add("myCustomVar",False,"User","3") 
 
            ' Verify whether the variable is in the collection now.
            Dim hasMyVar As Boolean =  pkg.Variables.Contains("myCustomVar") 
            Console.WriteLine("The variable was found? {0}", hasMyVar)
 
            Console.WriteLine("---------------------------")
            ' Loop over the collection using the foreach keyword.
            Dim pkgVar As Variable
            For Each pkgVar In pkgVars
                ' Print variables only from the User namespace.
                If pkgVar.Namespace = "User" Then
                Console.WriteLine("Variable: {0}, {1}", pkgVar.Name, pkgVar.Value.ToString())
                End If
            Next
            Console.WriteLine("---------------------------")
            ' Remove the variable from the namespace.
            pkg.Variables.Remove("myCustomVar")
 
            ' Loop over the collection again.
            Dim pkgVar As Variable
            For Each pkgVar In pkgVars
                ' Print variables only from the User namespace. Nothing should show.
                If pkgVar.Namespace = "User" Then
                    Console.WriteLine("Variable: {0}, {1}", pkgVar.Name, pkgVar.Value.ToString())
                End If
            Next
            Console.WriteLine("---------------------------")
            Console.WriteLine("")
        End Sub
    End Class
End Namespace

Sample Output:

The variable was found? True

---------------------------

Variable: myCustomVar, 3

---------------------------

---------------------------

请参阅

参考

Variables 类

Microsoft.SqlServer.Dts.Runtime 命名空间