ValidatorCollection.Contains(IValidator) Methode

Definition

Namespace:
System.Web.UI
Assembly:
System.Web.dll

Bestimmt, ob das angegebene Überprüfungsserversteuerelement in der Sammlung der Seite ValidatorCollection enthalten ist.

public:
 bool Contains(System::Web::UI::IValidator ^ validator);
public bool Contains(System.Web.UI.IValidator validator);
member this.Contains : System.Web.UI.IValidator -> bool
Public Function Contains (validator As IValidator) As Boolean

Parameter

validator
IValidator

Das Überprüfungsserversteuerelement, auf das überprüft werden soll.

Gibt zurück

Boolean

truewenn sich das Überprüfungsserversteuerelement in der Sammlung befindet; andernfalls . false

Beispiele

Im folgenden Codebeispiel wird die Verwendung der Contains Methode veranschaulicht.

Controls.Add(myForm);
myForm.Controls.Add(myLabel1);
myForm.Controls.Add(myTextBox);
myForm.Controls.Add(myButton);
this.Validators.Add(myRequiredFieldValidator);
myForm.Controls.Add(myLabel);

// Remove the RequiredFieldValidator.
if(Validators.Contains(myRequiredFieldValidator))
{
   this.Validators.Remove(myRequiredFieldValidator);
   Response.Write("RequiredFieldValidator is removed from ValidatorCollection<br>");
   Response.Write("ValidatorCollection count after removing the Validator: "+Validators.Count+"<br>");
}
else
{
   Response.Write("ValidatorCollection does not contain RequiredFieldValidator");
}

 Controls.Add(myForm)
 myForm.Controls.Add(myLabel1)
 myForm.Controls.Add(myTextBox)
 myForm.Controls.Add(myButton)
 Me.Validators.Add(myRequiredFieldValidator)
 myForm.Controls.Add(myLabel)

' Remove the RequiredFieldValidator.
 If Validators.Contains(myRequiredFieldValidator) Then
    Me.Validators.Remove(myRequiredFieldValidator)
    Response.Write("RequiredFieldValidator is removed from ValidatorCollection<br>")
    Response.Write("ValidatorCollection count after removing the Validator: " + Validators.Count.ToString() + "<br>")
 Else
    Response.Write("ValidatorCollection does not contain RequiredFieldValidator")
 End If

Gilt für:

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