77 lines
3.1 KiB
C#
77 lines
3.1 KiB
C#
#if FRAMEWORK20
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.ComponentModel;
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using System.Reflection;
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using System.Globalization;
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using System.ComponentModel.Design.Serialization;
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using DevComponents.DotNetBar.Validator;
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namespace DevComponents.DotNetBar.Design
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{
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public class RequiredFieldValidatorConverter : ExpandableObjectConverter
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{
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/// <summary>
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/// Creates new instance of the class.
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/// </summary>
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public RequiredFieldValidatorConverter() { }
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/// <summary>
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/// Checks whether conversion can be made to specified type.
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/// </summary>
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/// <param name="context">Context Information.</param>
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/// <param name="destinationType">Destination type.</param>
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/// <returns></returns>
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public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
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{
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if (destinationType == typeof(InstanceDescriptor))
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return true;
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return base.CanConvertTo(context, destinationType);
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}
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/// <summary>
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/// Converts object to specified type.
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/// </summary>
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/// <param name="context">Context information.</param>
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/// <param name="culture">Culture information.</param>
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/// <param name="value">Object to convert.</param>
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/// <param name="destinationType">Destination type.</param>
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/// <returns>Object converted to destination type.</returns>
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public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
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{
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if (destinationType == null)
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throw new ArgumentNullException("destinationType");
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if ((destinationType == typeof(InstanceDescriptor)) && (value is RequiredFieldValidator))
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{
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RequiredFieldValidator validator = (RequiredFieldValidator)value;
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Type[] constructorParams = null;
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MemberInfo constructorMemberInfo = null;
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object[] constructorValues = null;
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if (string.IsNullOrEmpty(validator.OptionalValidationGroup))
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{
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constructorParams = new Type[] { typeof(string) };
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constructorMemberInfo = typeof(RequiredFieldValidator).GetConstructor(constructorParams);
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constructorValues = new object[] { validator.ErrorMessage};
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}
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else
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{
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constructorParams = new Type[] { typeof(string), typeof(string) };
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constructorMemberInfo = typeof(RequiredFieldValidator).GetConstructor(constructorParams);
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constructorValues = new object[] { validator.ErrorMessage, validator.OptionalValidationGroup };
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}
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if (constructorMemberInfo != null)
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{
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return new InstanceDescriptor(constructorMemberInfo, constructorValues);
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}
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}
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return base.ConvertTo(context, culture, value, destinationType);
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}
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}
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}
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#endif |