ValidatorCollection.Contains(IValidator) Method

Definition

Namespace:

System.Web.UI

Assembly:

System.Web.dll

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

C#

public bool Contains(System.Web.UI.IValidator validator);

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.

C#

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");
}

Applies to

See also

• IValidator
• Validators