public class WebUtil { /// <summary> /// 转换IList<T>为DataTable/// </summary> /// <typeparam name="T">泛型类型</typeparam> /// <param name="list">泛型List集合</param> /// <returns>Datatable 对象</…

/// <summary> /// 打开Excel文档并转为DataTable /// </summary> /// <returns></returns> public static DataTable ExcelWorksheetToDataTable() { DataTable dtExecl = new DataTable(); double Ver = GetExcelVer(); ) { MessageBox.Show("The com…

//把List<string>转为DataTable List<string> myList = new List<string>(); DataTable dt2 = new DataTable(); dt2.Columns.Add(new DataColumn("sqlString", typeof(string))); //给表dt2添加字段 DataRow dr; foreach (var i in myList) { dr = dt2.Ne…

问题还原,如图所示,我们要筛选所有SHDP 为北京翠微KR的数据. 1. 筛选DataTable微软为我们提供了一个方法DataTable.Select(),其用法如下: 1)  Select()——获取所有 System.Data.DataRow 对象的数组:2)  Select(string filterExpression)——按照主键顺序(如果没有主键,则按照添加顺序)获取与筛选条件相匹配的所有 System.Data.DataRow 对象的数组:3)  Select(string fi…

// remove "this" if not on C# 3.0 / .NET 3.5 public static System.Data.DataTable ConvertToDatatable<T>(this IList<T> data) { System.ComponentModel.PropertyDescriptorCollection props = System.ComponentModel.TypeDescriptor.GetPropertie…

调用word的com组件将400条数据导入word表格中耗时10分钟简直不能忍受,使用NPOI组件耗时4秒钟.但是NPOI中替换书签内容的功能不知道是不支持还是没找到. 辅助类 Excel表格数据与DataTable互转: using System; using System.Collections.Generic; using System.Linq; using System.Text; using NPOI.SS.UserModel; using NPOI.XSSF.UserModel;…

public static DataTable ConvertToDatatable<T>(IEnumerable<T> data) { PropertyDescriptorCollection props = TypeDescriptor.GetProperties(typeof(T)); DataTable table = new DataTable(); ; i < props.Count; i++) { PropertyDescriptor prop = props[…

using System; using System.Collections.Generic; using System.Data; using System.Data.OleDb; using System.Linq; using System.Text; namespace ExcelRead { class ExcelHelper { private static string excelConstr; private OleDbConnection conn = null;//操作数据库…

using com.jd120.Core.Utility; using System; using System.Collections.Generic; using System.Data; using System.IO; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.…

private static DataTable CreateDataTable(string table) { DataSet dataSet = new DataSet(); string dataFile = FilesHelper.FindingFileName(Application.StartupPath, "Data\\Mail.xml"); if(dataFile != string.Empty) { FileInfo fi = new FileInfo(dataFil…