用动态控件模拟复合控件(二)

NumberTextBox

public abstract class NumberTextBox<T> : BaseTextBox where T : IComparable<T>    {        private T minValue = default(T);        public virtual T MinValue        {            get { return minValue; }            set { minValue = value; }        }        private T maxValue = default(T);        public virtual T MaxValue        {            get { return maxValue; }            set { maxValue = value; }        }        protected abstract T DefaultMinValue { get; }        protected abstract T DefaultMaxValue { get; }        protected ValidationDataType type;        public virtual ValidationDataType Type        {            get { return type; }            set { type = value; }        }        public NumberTextBox()        {            this.FilterType = FilterTypes.Numbers;            this.Options = TextBoxOptions.Required | TextBoxOptions.Filtered;            this.MaxValue = this.DefaultMaxValue;            this.MinValue = this.DefaultMinValue;        }        protected override void BuildValidatorControls()        {            base.BuildValidatorControls();            //添加额外的控件            if ((this.MinValue.CompareTo(this.DefaultMinValue) != 0) && (this.MaxValue.CompareTo(this.DefaultMaxValue) != 0))            {                RangeValidator rv = new RangeValidator();                rv.ID = "rv_" + this.ID;                rv.ControlToValidate = this.ID;                rv.MaximumValue = this.MaxValue.ToString();                rv.MinimumValue = this.MinValue.ToString();                rv.SetFocusOnError = true;                rv.Type = this.Type;                rv.ErrorMessage = string.Format("{0}的值应该位于{1}和{2}之间", this.DisplayName, this.MinValue, this.MaxValue);                this.AddValidator(rv);            }            else if (this.MinValue.CompareTo(this.DefaultMinValue) != 0)            {                CompareValidator cv = new CompareValidator();                cv.ID = "rv_" + this.ID;                cv.ControlToValidate = this.ID;                cv.SetFocusOnError = true;                cv.Type = this.Type;                cv.Operator = ValidationCompareOperator.GreaterThanEqual;                cv.ValueToCompare = this.MinValue.ToString();                cv.ErrorMessage = string.Format("{0}的值应该大于{1}", this.DisplayName, this.MinValue);                this.AddValidator(cv);            }            else if ((this.MaxValue.CompareTo(this.DefaultMaxValue) != 0))            {                CompareValidator cv = new CompareValidator();                cv.ID = "rv_" + this.ID;                cv.ControlToValidate = this.ID;                cv.SetFocusOnError = true;                cv.Type = this.Type;                cv.Operator = ValidationCompareOperator.LessThanEqual;                cv.ValueToCompare = this.MaxValue.ToString();                cv.ErrorMessage = string.Format("{0}的值应该小于{1}", this.DisplayName, this.MaxValue);                this.AddValidator(cv);            }        }    }    public class NumberTextBox : NumberTextBox<int>    {        public NumberTextBox()        {            this.Type = ValidationDataType.Integer;        }        protected override int DefaultMinValue        {            get { return int.MinValue; }        }        protected override int DefaultMaxValue        {            get { return int.MaxValue; }        }    }    public class MoneyTextBox : NumberTextBox<decimal>    {        public MoneyTextBox()        {            this.Type = ValidationDataType.Currency;        }       protected override decimal DefaultMinValue        {            get { return decimal.MinValue; }        }        protected override decimal DefaultMaxValue        {            get { return decimal.MaxValue; }        }    }

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