使用JSON.net 将实体类生成JSON字符串

使用JSON.net 生成实体类的JSON串是很简单的，比如：

//实体类




代码
public class SysNavModel

{

public SysNavModel()

{ }

/// <summary>

/// 构造函数 sys_nav

/// </summary>

/// <param name="navid">navid</param>

/// <param name="title">title</param>

/// <param name="url">url</param>

/// <param name="iconcls">iconcls</param>

/// <param name="parentid">parentid</param>

/// <param name="visible">visible</param>

/// <param name="orderid">orderid</param>

public SysNavModel(int? navid, string title, string url, string iconcls, int? parentid, bool? visible, int? orderid)

{

this.navid = navid;

this.title = title;

this.url = url;

this.iconcls = iconcls;

this.parentid = parentid;

this.visible = visible;

this.orderid = orderid;

}

#region 实体属性

private int? _navid;

private string _title;

private string _url;

private string _iconcls;

private int? _parentid;

private bool? _visible;

private int? _orderid;

private string _ptag;

/// <summary>

/// navid

/// </summary>

public int? navid

{

set { _navid = value; }

get { return _navid; }

}

/// <summary>

/// 页面标记

/// </summary>

public string ptag

{

get { return _ptag; }

set { _ptag = value; }

}

/// <summary>

/// 导航菜单名称

/// </summary>

public string title

{

set { _title = value; }

get { return _title; }

}

/// <summary>

/// 链接地址

/// </summary>

public string url

{

set { _url = value; }

get { return _url; }

}

/// <summary>

/// ICON 样式类名

/// </summary>

public string iconcls

{

set { _iconcls = value; }

get { return _iconcls; }

}

/// <summary>

/// 上级ID

/// </summary>

public int? parentid

{

set { _parentid = value; }

get { return _parentid; }

}

/// <summary>

/// 是否显示

/// </summary>

public bool? visible

{

set { _visible = value; }

get { return _visible; }

}

/// <summary>

/// 排序ID

/// </summary>

public int? orderid

{

set { _orderid = value; }

get { return _orderid; }

}

/// <summary>

/// 权限数组

/// </summary>

public ArrayList Permissions

{

get

{

return NavPermissionDal.Current.GetPermissionArray(this.navid.Value);

}

}

#endregion

//主要代码

public override string ToString()

{

StringBuilder sb = new StringBuilder();

StringWriter sw = new StringWriter(sb);

new JsonSerializer().Serialize(new JsonTextWriter(sw), this);

return sb.ToString();

}
}

重写了实体类的ToString()方法
在调时 直接调用实体类的ToString() 方法就可以生JSON字符串了。
简单吧

我们可以封装一个方法以便以后使用
public static string ToJson(object obj)

{

StringBuilder sb = new StringBuilder();

StringWriter sw = new StringWriter(sb);

JsonSerializer json = new JsonSerializer();

json.Serialize(new JsonTextWriter(sw),obj);

return sb.ToString();

}