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Expression 속성

Gets or sets the expression contained in a variable.

네임스페이스:  Microsoft.SqlServer.Dts.Runtime
어셈블리:  Microsoft.SqlServer.ManagedDTS(Microsoft.SqlServer.ManagedDTS.dll)

구문

‘선언
Public Property Expression As String
    Get
    Set
‘사용 방법
Dim instance As Variable
Dim value As String

value = instance.Expression

instance.Expression = value

public string Expression { get; set; }

public:
property String^ Expression {
    String^ get ();
    void set (String^ value);
}

member Expression : string with get, set

function get Expression () : String
function set Expression (value : String)

속성 값

유형: System. . :: . .String
A String that contains the expression.

주의

The Expression method returns the expression entered in the value property only when the EvaluateAsExpression property is set to true; otherwise, an empty string is returned if false.

예

The following example sets the EvaluateAsExpression flag to show that the variable contains an expression, and then can use the Expression property.

static void Main(string[] args)
    {
        Package p = new Package();
        p.Variables.Add("x", false, "", 1);
        Variable v = p.Variables.Add("y", false, "", 1);
        v.Expression = "@x + 10";
        v.EvaluateAsExpression = true;
        if (v.Value.ToString() == "11")
            Console.WriteLine("Value was 11");
        else
            Console.WriteLine("Value was not 11");
    }

Shared  Sub Main(ByVal args() As String)
        Dim p As Package =  New Package() 
        p.Variables.Add("x", False, "", 1)
        Dim v As Variable =  p.Variables.Add("y",False,"",1) 
        v.Expression = "@x + 10"
        v.EvaluateAsExpression = True
        If v.Value.ToString() = "11" Then
            Console.WriteLine("Value was 11")
        Else 
            Console.WriteLine("Value was not 11")
        End If
End Sub

Sample Output:

Value was 11