关于datatable datarow DataTable paraval = GetParaVal(DateCondition, strUrl, Page, RowPage, iYearMonthNow, 2); var query = from t in paraval.AsEnumerable() //datatable 和linq转换 group t by new { t1 = t.Field<string>("InsKind") } into m select n…

using System; using System.Collections.Generic; using System.Data; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; namespace Com.AppCode.Extend { static public class TableConvert { #region DataTable 1 ///…

LINQ 查询适用于实现的数据源 IEnumerable<T>接口或System.Query.IQueryable接口. DataTable类默认是没有实现以上接口的. 所以要在DataTable中使用LINQ查询,需要调用一下AsEnumerable方法,返回一个EnumerableRowCollection<DataRow>集合. 实例如下所示: using System; using System.Collections.Generic; using System.Data;…

ConvertJson.cs类 using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Reflection; using System.Collections; using System.Data.Common; namespace DotNet.Utilities { //JSON转换类 public class ConvertJson { #regi…

1. DataTable转IList public class DataTableToList<T>whereT :new() { ///<summary> ///利用反射将Datatable转换成List模型 ///</summary> ///<param name="dt"></param> ///<returns></returns> public static List<T> Con…

public static IEnumerable<T> ConvertObject<T>(DataTable dt) where T : new() { var v = typeof(T).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance); List<PropertyInfo> Fields = new List<Prope…

C#中对象,字符串,dataTable.DataReader.DataSet,对象集合转换成Json字符串方法. public class ConvertJson { #region 私有方法 /// <summary> /// 过滤特殊字符 /// </summary> /// <param name="s">字符串</param> /// <returns>json字符串</returns> private s…

ConvertJson.cs类 using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Reflection; using System.Collections; using System.Data.Common; namespace DotNet.Utilities { //JSON转换类 public class ConvertJson { #regi…

public class ConvertX { #region 将集合类转换成DataTable /// <summary> /// 将集合类转换成DataTable /// </summary> /// <param name="list">集合</param> /// <returns></returns> public static System.Data.DataTable ToDataTable(ILis…

这次在做项目中,遇到了这样一个问题:datable中列头的名字是不确定的,从数据库中动态查出来的,假设为typeDATA,行的数据中又包含了列头的信息,并按固定的字段分组,当查处行的数据之后用来填充每列的值,用来统计对应的列的信息,如下: //查处获取列的表头的数据 public DataTable typeDATA        {            get {                StringBuilder typeString = new StringBuilder(@"SE…