M vc3+ExtJs 数据格式转换（泛型集合转换为Json类型）
直接上代码吧，代码可以说明一切！
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Reflection;
namespace ProjectManageSys.Extension
{
public static class ConvertData {
/// <summary>
/// 数据源转换为Json格式
/// </summary>
/// <typeparam name="TEntity">实体</typeparam>
/// <param name="source">数据源</param>
/// <param name="flag">标记（“0”只显示List:'[{},{}]'"1"显示count,+List:{count:'',list:[{},{},{}]}）</param>
/// <returns>字符窜</returns>
public static String ConvertToJson<TEntity>(this IQueryable<TEntity> source, string flag) where TEntity : class
{
if (source == null && !source.Any())
{
return string.Empty;
}
StringBuilder builder = new StringBuilder();
if (flag.Equals("1"))
{
builder.Append("{");
builder.AppendFormat("count:{0},list:[", source.Count());
}
if (flag.Equals("0"))
{
builder.Append("[");
}
foreach (var obj in source)
{
builder.Append("{");
PropertyInfo[] infos = obj.GetType().GetProperties();
foreach (var item in infos)
{
builder.Append(item.Name);
builder.Append(":");
if (item.GetValue(obj, null) == null || item.GetValue(obj, null).Equals(""))
{
builder.Append("''");
}
else
{
builder.Append("'" + item.GetValue(obj, null) + "'");
}
builder.Append(",");
}
builder.Remove(builder.Length - 1, 1);
builder.Append("}");
builder.Append(",");
}
builder.Remove(builder.Length - 1, 1);
builder.Append("]");
if (flag.Equals("1"))
{
builder.Append("}");
}
return builder.ToString();
}
}
}
此方法有不足的地方就是没有处理存在外键关系的数据，所以请大牛们指点！