تحرير

ValidatorCollection.Contains(IValidator) Method

  • Reference

Definition

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

Determines whether the specified validation server control is contained within the page's ValidatorCollection collection.

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

Parameters

validator
IValidator

The validation server control to check for.

Returns

Boolean

true if the validation server control is in the collection; otherwise, false.

Examples

The following code example demonstrates how to use the Contains method.

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

Applies to

See also