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348 lines
12 KiB
348 lines
12 KiB
1 year ago
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.Serialization.Json;
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using System.Text;
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using System.Windows.Forms;
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namespace CK.SCP.Utils
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{
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public static class ListHelper
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{
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public static T JsonToEntity<T>(string jsonString)
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{
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using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))
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{
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var serializer = new DataContractJsonSerializer(typeof(T));
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return (T)serializer.ReadObject(ms);
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}
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}
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public static string Entity2Json<T>(T model) where T : class
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{
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using (var ms = new MemoryStream())
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{
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var serializer = new DataContractJsonSerializer(typeof(T));
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serializer.WriteObject(ms, model);
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ms.Position = 0;
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StreamReader sr = new StreamReader(ms, Encoding.UTF8);
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string json = sr.ReadToEnd();
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sr.Close();
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ms.Close();
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return json;
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}
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}
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public static List<T> JsonToList<T>(string jsonString)
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{
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using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))
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{
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var serializer = new DataContractJsonSerializer(typeof(T));
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return (List<T>)serializer.ReadObject(ms);
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}
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}
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public static IList<T> SearchList<T>(IEnumerable<T> tList, string txt)
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{
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IList<T> selectedList = new List<T>();
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foreach (var t in tList)
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{
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var a = typeof(T);
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var ps = a.GetProperties();
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foreach (PropertyInfo info in ps)
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{
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object o = info.GetValue(t);
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if (o != null && o.ToString().Contains(txt))
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{
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selectedList.Add(t);
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break;
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}
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}
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}
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return selectedList;
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}
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public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TSource> source, Func<TSource, TKey> keySelector)
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{
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HashSet<TKey> seenKeys = new HashSet<TKey>();
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return source.Where(element => seenKeys.Add(keySelector(element)));
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}
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public static T DataTableToEntity<T>(DataTable dt) where T : new()
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{
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var t = new T();
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var tList = DataTableToList<T>(dt);
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if (tList.Count > 0)
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t = tList[0];
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return t;
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}
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public static List<T> DataTableToList<T>(DataTable dt) where T : new()
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{
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List<T> tList = new List<T>();
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try
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{
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foreach (DataRow dr in dt.Rows)
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{
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var t = new T();
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var propertys = t.GetType().GetProperties();
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foreach (var pi in propertys)
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{
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object value = null;
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var piName = pi.Name;
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if (dt.Columns.Contains(piName))
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{
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value = ConvertToType(dr[piName], pi.PropertyType);
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}
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if (!pi.CanWrite) continue;
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try
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{
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pi.SetValue(t, value, null);
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.ToString());
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throw;
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}
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}
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tList.Add(t);
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.Message);
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}
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return tList;
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}
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public static DataTable EntityToDataTable<T>(T t) where T : new()
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{
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if(t==null) return new DataTable();
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var tList = new List<T> { t };
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var dt = ListToDataTable(tList, t.GetType().Name);
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return dt;
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}
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public static DataSet EntityToDataSet<T>(T t) where T : new()
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{
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if (t == null) return new DataSet();
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var tList = new List<T> { t };
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var dt = ListToDataTable(tList, t.GetType().Name);
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var ds = new DataSet();
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ds.Tables.Add(dt);
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return ds;
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}
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public static DataSet ListToDataSet<T>(List<T> tList) where T : new()
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{
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var t = new T();
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var dt = ListToDataTable(tList, t.GetType().Name);
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var ds = new DataSet();
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ds.Tables.Add(dt);
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return ds;
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}
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public static DataTable ListToDataTable<T>(List<T> tList) where T : new()
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{
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if (tList == null||tList.Count==0) return new DataTable();
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var t = new T();
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var dt = ListToDataTable(tList, t.GetType().Name);
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return dt;
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}
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public static DataTable ListToDataTable<T>(List<T> tList, string tableName) where T : new()
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{
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var dt = new DataTable { TableName = tableName };
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if (tList == null || tList.Count == 0) return new DataTable();
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var t = new T();
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var properties = t.GetType().GetProperties();
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foreach (var pi in properties)
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{
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// The the type of the property
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Type columnType = pi.PropertyType;
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// We need to check whether the property is NULLABLE
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if (pi.PropertyType.IsGenericType &&
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pi.PropertyType.GetGenericTypeDefinition() == typeof(Nullable<>))
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{
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// If it is NULLABLE, then get the underlying type. eg if "Nullable<int>" then this will return just "int"
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columnType = pi.PropertyType.GetGenericArguments()[0];
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}
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// Add the column definition to the datatable.
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dt.Columns.Add(new DataColumn(pi.Name, columnType));
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// dc = new DataColumn(columnName,pi.PropertyType);
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// dt.Columns.Add(dc);
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}
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foreach (var tt in tList)
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{
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var dr = dt.NewRow();
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foreach (var pi in properties)
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{
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var columnName = pi.Name;
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try
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{
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var value = pi.GetValue(tt, null);
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dr[columnName] = value ?? DBNull.Value;
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}
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catch (Exception)
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{
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dr[columnName] = DBNull.Value;
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}
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// dr[columnName] = pi.GetValue(tt, new object[] {null}) ?? DBNull.Value;
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if (pi.PropertyType.FullName == "System.Decimal")
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{
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dr[columnName] = Math.Round(Convert.ToDecimal(dr[columnName]), 2);
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}
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}
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dt.Rows.Add(dr);
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}
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return dt;
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}
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public static object ConvertToType(object value, Type convertsionType)
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{
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object returnValue = "";
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try
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{
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if (convertsionType.IsGenericType && convertsionType.GetGenericTypeDefinition() == typeof(Nullable<>))
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{
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if (value != null && value != DBNull.Value && value.ToString() != "" && value.ToString().Length > 0)
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{
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var nullableConverter = new NullableConverter(convertsionType);
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convertsionType = nullableConverter.UnderlyingType;
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returnValue = Convert.ChangeType(value, convertsionType);
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}
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else
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{
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returnValue = null;
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}
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}
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else
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{
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if (value != null && value != DBNull.Value && value.ToString() != "" && value.ToString().Length > 0)
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{
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if (value.ToString().IndexOf("%", System.StringComparison.Ordinal) == value.ToString().Length - 1)
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{
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switch (convertsionType.ToString())
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{
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case "System.Decimal":
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returnValue = Convert.ToDecimal(value.ToString().Replace("%", "")) / 100;
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break;
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case "System.Double":
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returnValue = Convert.ToDecimal(value.ToString().Replace("%", "")) / 100;
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break;
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case "System.Single":
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returnValue = Convert.ToDecimal(value.ToString().Replace("%", "")) / 100;
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break;
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}
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}
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else if (value.ToString() == "-")
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{
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returnValue = 0;
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}
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else
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{
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returnValue = Convert.ChangeType(value, convertsionType);
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if (convertsionType.FullName == "System.Decimal")
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returnValue = Math.Round((decimal)returnValue, 5);
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if (convertsionType.FullName == "System.String")
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returnValue = returnValue.ToString().TrimEnd();
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}
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}
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else
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{
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returnValue = GetReturnValue(convertsionType);
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}
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}
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}
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catch
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{
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returnValue = GetReturnValue(convertsionType);
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}
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return returnValue;
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}
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private static object GetReturnValue(Type convertsionType)
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{
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object returnValue;
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switch (convertsionType.ToString())
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{
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case "System.Guid":
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returnValue = Guid.NewGuid();
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break;
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case "System.DateTime":
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returnValue = DateTime.Now;
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break;
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case "System.Decimal":
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returnValue = 0m;
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break;
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case "System.Double":
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returnValue = 0.0;
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break;
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case " System.UInt16":
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returnValue = 0;
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break;
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case " System.UInt32":
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returnValue = 0;
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break;
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case " System.UInt64":
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returnValue = 0;
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break;
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case "System.Int32":
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returnValue = 0;
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break;
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case "System.Int16":
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returnValue = 0;
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break;
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case "System.Int64":
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returnValue = 0;
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break;
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case "System.String":
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returnValue = "";
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break;
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case "System.Single":
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returnValue = 0.0f;
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break;
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default:
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returnValue = "";
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break;
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}
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return returnValue;
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}
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}
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}
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