C#:实体类中做数据验证

主要是在实体类中验证

using System;

namespace Jone.Function.attribute
{
/// <summary>
/// 附加在数据实体用于描述如何验证合法性
/// </summary>
[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
public sealed class ValidateAttribute : Attribute
{
private bool _allowNull = true;
private string _regEx;
private string _description;
private string _ValidateType;
private string _instruction;

#region 方法
public ValidateAttribute()
{
}
public ValidateAttribute(bool AllowNull)
{
_allowNull = AllowNull;
}
public ValidateAttribute(bool AllowNull, string ValidateType)
{
_allowNull = AllowNull;
_ValidateType = ValidateType;
}
#endregion

#region 属性
/// <summary>
/// 描述
/// </summary>
public string Description
{
get { return _description; }
set { _description = value; }
}
/// <summary>
/// 验证类型
/// </summary>
public string ValidateType
{
get
{
return _ValidateType;
}
set
{
_ValidateType = value;
}
}

/// <summary>
/// 是否可以空
/// </summary>
public bool AllowNull
{
get
{
return _allowNull;
}
set
{
_allowNull = value;
}
}
/// <summary>
/// 用于验证的正则表达式
/// </summary>
public string RegEx
{
get
{
return _regEx;
}
set
{
_regEx = value;
}
}

/// <summary>
/// 对于正确格式的描述
/// </summary>
public string Instruction
{
get
{
return _instruction;
}
set
{
_instruction = value;
}
}
#endregion
}

#region 使用示例
//public class 使用示例
//{
// public 使用示例()
// {

// }
// private int _id;
// private string _name;
// //[Validate(RegEx = "^\\d{17}(http://www.cnblogs.com/luomingui/admin/file:///d|x)$", Description = "身份证号码")]
// [Validate(RegEx = "", Description = "")]
// public int id
// {
// set { _id = value; }
// get { return _id; }
// }
// [Validate(AllowNull = false, Description = "姓名")]
// public string name
// {
// set { _name = value; }
// get { return _name; }
// }
//}
#endregion
}

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/luomingui/archive/2008/09/14/2874588.aspx