requiredfieldvalidator.cs

不错的人事管理系统

using System;

namespace System.Web.UI.WebControls
{
	/// <summary>
	/// Summary description for RequiredFieldValidator.
	/// </summary>
	public class RequiredFieldValidator : BaseValidator
	{

		public RequiredFieldValidator() : base() 
		{
		}

		protected virtual void AddAttributesToRender(HtmlTextWriter writer) 
		{
			this.AddAttributesToRender(writer);
			if (this.RenderUplevel) 
			{
				writer.AddAttribute("evaluationfunction", "RequiredFieldValidatorEvaluateIsValid");
				writer.AddAttribute("initialvalue", this.InitialValue);
			}
		}

		protected override bool EvaluateIsValid() 
		{
			string local0;

			local0 = this.GetControlValidationValue(this.ControlToValidate);
			if (local0 == null)
				return true;
			return local0.Trim() != this.InitialValue.Trim();
		}

		public string InitialValue 
		{
			get
			{
				object local0;

				local0 = this.ViewState["InitialValue"];
				if (local0 != null)
					return (String) local0;
				return System.String.Empty;
			}
			set
			{
				this.ViewState["InitialValue"]= value;
			}
		}
	}
}