Silverlight日记：动态生成DataGrid、行列装换、动态加载控件
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内容图文
本文主要针对使用DataGrid动态绑定数据对象，并实现行列转换效果。
一，前台绑定
<
sdk:DataGrid
x:Name
="dataGrid2"
Style
="
{StaticResource ResourceKey=safeDataGrid2}
"
/>
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Reflection.Emit;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Threading;
using Test.Util;
namespace Test
{
public partial class MainPage : UserControl
{
public Md Model = null;
private DispatcherTimer timer;
int index = 0;
/// <summary>
///
/// </summary>
public ObservableCollection<Obj> objs = new ObservableCollection<Obj>();
public MainPage()
{
InitializeComponent();
init();
timer = new DispatcherTimer();
timer.Interval = new TimeSpan(0, 0, 8);
timer.Tick += timer_Tick;
timer.Start();
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void timer_Tick(object sender, EventArgs e)
{
var ramd = new Random();
foreach (var tag in Model.Tags)
{
foreach (var para in Consts.Params)
{
var rv = index % 2 == 0 ? ramd.Next(2, 10) : ramd.Next(1, 5);
var o = new Obj
{
IsAlarm = false,
Value = (0.5 + rv).ToString(),
State = index % 2 == 0 ? 1 : 0,
MeterId = tag.F_METER_ID,
MeterName = tag.F_METER_NAME,
ParaId = para.Id
};
if (para.Id == "10")
{
o.IsAlarm = false;
o.ParaId = string.Empty;
o.State = 0;
o.Value = string.Empty;
}
var temp = objs.FirstOrDefault(i => i.MeterName.Equals(o.MeterName) && i.ParaId == o.ParaId);
if (temp != null)
{
temp.IsAlarm = o.IsAlarm;
temp.State = o.State;
temp.Value = o.Value;
}
else
objs.Add(o);
}
}
//CommHelper.GetSource(Model.Tags, objs, ref this.dataGrid2);
CommHelper.BindData(Model.Tags, objs, ref this.dataGrid2);
index++;
}
/// <summary>
///
/// </summary>
void init()
{
Model = new Md();
Model.Tags = new List<T_METER>();
Model.Eles = new List<Param>();
for (int i = 0; i < 1; i++)
{
var temp = new T_METER
{
F_BUILD_ID = "440300B059",
F_METER_ID = string.Format("TAG_{0}", i),
F_METER_NAME = string.Format("CM-{0}", i)
};
if (i == 0)
temp.F_EQT_TYPE = "D";
else if (i == 1)
temp.F_EQT_TYPE = "C";
else if (i == 2)
temp.F_EQT_TYPE = "E";
else
temp.F_EQT_TYPE = "A";
Model.Tags.Add(temp);
}
this.dataGrid1.ItemsSource = Consts.Params;
CommHelper.CreateDataGrid(Model.Tags, ref this.dataGrid2);
}
}
/// <summary>
///
/// </summary>
public class Md
{
/// <summary>
/// 参数集合
/// </summary>
public List<Param> Eles { get; set; }
/// <summary>
/// 电表集合
/// </summary>
public List<T_METER> Tags { get; set; }
}
/// <summary>
///
/// </summary>
public class T_METER
{
public string F_BUILD_ID { get; set; }
public string F_METER_ID { get; set; }
public string F_METER_NAME { get; set; }
public string F_EQT_TYPE { get; set; }
public string F_VALUE { get; set; }
}
/// <summary>
/// 参数
/// </summary>
public class Param
{
public string Id { get; set; }
public string Name { get; set; }
}
/// <summary>
/// 绑定数据对象
/// </summary>
public class Obj
{
/// <summary>
/// 对应参数编号
/// </summary>
public string ParaId { get; set; }
public string MeterId { get; set; }
/// <summary>
/// 电表名称
/// </summary>
public string MeterName { get; set; }
/// <summary>
/// 开关状态0-关，1-开
/// </summary>
public int State { get; set; }
/// <summary>
/// OPC读取值
/// </summary>
public string Value { get; set; }
/// <summary>
/// 是否报警
/// </summary>
public bool IsAlarm { get; set; }
}
}
二，动态列对象
1
using
System.Collections.Generic;
2
3
namespace
Test.Util
4
{
5
/*
==============================
6
* Desc：DynamicColumn
7
* Author：hezp
8
* Date：2014/8/14 15:49:17
9
* ==============================
*/
10
public
class
DynamicColumn
11
{
12
///
<summary>
13
///
列名
14
///
</summary>
15
public
string ColumnName { get; set; }
16///<summary>17/// 列对应集合
18///</summary>19public List<string> Values { get; set; }
20 }
21 }
三，DataGrid动态生成类
1
using
System;
2
using
System.Linq;
3
using
System.Collections;
4
using
System.Collections.Generic;
5
using
System.Net;
6
using
System.Text;
7
using
System.Windows;
8
using
System.Windows.Controls;
9
using
System.Windows.Documents;
10
using
System.Windows.Ink;
11
using
System.Windows.Input;
12
using
System.Windows.Markup;
13
using
System.Windows.Media;
14
using
System.Windows.Media.Animation;
15
using
System.Windows.Shapes;
16
using
System.Text.RegularExpressions;
17
using
System.Collections.ObjectModel;
18
19
namespace
Test.Util
20
{
21
/*
==============================
22
* Desc：CommHelper
23
* Author：hezp
24
* Date：2014/8/14 15:58:26
25
* ==============================
*/
26
public
class
CommHelper
27
{
28
///
<summary>
29
///
30
///
</summary>
31
///
<param name="columnBindName"></param>
32
///
<param name="columnHeaderName"></param>
33
///
<param name="width"></param>
34
///
<param name="index"></param>
35
///
<returns></returns>
36
private
static DataGridTemplateColumn CreateDataGridTextColumn(string columnBindName, string columnHeaderName, T_METER tag)
37 {
38 DataGridTemplateColumn dgColumn = new DataGridTemplateColumn();
39 dgColumn.Header = columnHeaderName;
40 dgColumn.IsReadOnly = true;
41var w = 70;
42if (tag != null)
43 {
44if (tag.F_EQT_TYPE.Equals("D"))
45 {
46 dgColumn.HeaderStyle = ResourcesWrapper.GetStyle<Style>("safeByqStyle");
47 w = 120;
48 }
49elseif (tag.F_EQT_TYPE.Equals("B"))
50 {
51 dgColumn.HeaderStyle = ResourcesWrapper.GetStyle<Style>("safeSingleDrStyle");
52 w = 90;
53 }
54elseif (tag.F_EQT_TYPE.Equals("C"))
55 {
56 dgColumn.HeaderStyle = ResourcesWrapper.GetStyle<Style>("safeDoubleDrStyle");
57 w = 150;
58 }
59elseif (tag.F_EQT_TYPE.Equals("E"))
60 {
61 dgColumn.HeaderStyle = ResourcesWrapper.GetStyle<Style>("safeHookStyle");
62 w = 98;
63 }
64else 65 dgColumn.HeaderStyle = ResourcesWrapper.GetStyle<Style>("safeMeterStyle");
66 }
67else 68 dgColumn.HeaderStyle = ResourcesWrapper.GetStyle<Style>("safeMeterStyle");
69 70 dgColumn.CellStyle = ResourcesWrapper.GetStyle<Style>("safeCellStyle");
71 72 StringBuilder cellTemplate = new StringBuilder();
73 cellTemplate.Append("<DataTemplate ");
74 cellTemplate.Append(" xmlns=‘http://schemas.microsoft.com/client/2007‘ ");
75 cellTemplate.Append(" xmlns:x=‘http://schemas.microsoft.com/winfx/2006/xaml‘ ");
76 cellTemplate.Append(" xmlns:c=‘clr-namespace:Test.Controls;assembly=Test.Controls‘ ");
77 cellTemplate.Append(" xmlns:local = ‘Test");
78 cellTemplate.Append(";assembly=Test‘>");
79 cellTemplate.Append(string.Format("<c:CustomCell Width=‘{1}‘ Text=‘{{Binding {0}}}‘/>", columnBindName, w));
80 cellTemplate.Append("</DataTemplate>");
81 dgColumn.CellTemplate = (DataTemplate)XamlReader.Load(cellTemplate.ToString());
82 dgColumn.CellTemplate.LoadContent();
83 84return dgColumn;
85 }
86 87///<summary> 88/// 89///</summary> 90///<param name="SourceList"></param> 91///<returns></returns> 92privatestatic IEnumerable<IDictionary> GetEnumerable(List<Dictionary<string, string>> SourceList)
93 {
94for (int i = 0; i < SourceList.Count; i++)
95 {
96var dict = new Dictionary<string, string>();
97 dict = SourceList[i];
98yieldreturn dict;
99 }
100 }
101///<summary>102///103///</summary>104///<param name="list"></param>105///<param name="objs"></param>106///<returns></returns>107privatestatic List<DynamicColumn> Grenartor(List<T_METER> list, ObservableCollection<Obj> objs)
108 {
109var columns = new List<DynamicColumn>();
110if (null == list) returnnull;
111var ms = from p in list
112 group p by new { p.F_BUILD_ID, p.F_METER_ID, p.F_METER_NAME } into gg
113select gg.Key;
114var ramd = new System.Random();
115foreach (var m in ms)
116 {
117var column = new DynamicColumn
118 {
119 ColumnName = string.Format("{0}____{1}", m.F_METER_NAME, 0)//格式：支路名称|开关状态值120 };
121if (objs != null)
122 {
123var obj = objs.FirstOrDefault(i => i.MeterName.Equals(m.F_METER_NAME));
124if (obj != null)
125 column.ColumnName = string.Format("{0}____{1}", obj.MeterName, obj.State);
126 }
127 column.Values = new List<string>();
128var count = Consts.Params.Count;
129for (int i = 0; i < count; i++)
130 {
131var v = false;//是否显示按钮132if (i == count - 1)
133 v = true;
134if (objs != null)
135 {
136var temp = objs.FirstOrDefault(j => j.MeterName.Equals(m.F_METER_NAME) && !string.IsNullOrEmpty(j.ParaId) && j.ParaId.Equals(Consts.Params[i].Id));
137if (temp != null)
138 column.Values.Add(string.Format("{0}____{1}____{2}____{3}____{4}____{5}____{6}", m.F_BUILD_ID, m.F_METER_ID, m.F_METER_NAME, temp.Value, v, temp.IsAlarm, Consts.Params[i].Id));
139else140 column.Values.Add(string.Format("{0}____{1}____{2}____{3}____{4}____{5}____{6}", m.F_BUILD_ID, m.F_METER_ID, m.F_METER_NAME, "-", v, false, Consts.Params[i].Id));//格式：建筑编号____支路编号____支路名称____数值____是否是按钮____是否报警 141 }
142else143 column.Values.Add(string.Format("{0}____{1}____{2}____{3}____{4}____{5}____{6}", m.F_BUILD_ID, m.F_METER_ID, m.F_METER_NAME, "-", v, false, Consts.Params[i].Id));
144 }
145 columns.Add(column);
146 }
147return columns;
148 }
149///<summary>150/// 绑定数据
151///</summary>152///<param name="tags"></param>153///<param name="objs"></param>154///<param name="datagrid"></param>155publicstaticvoid BindData(List<T_METER> tags, ObservableCollection<Obj> objs, ref DataGrid datagrid)
156 {
157var list = Grenartor(tags, objs);
158var dataSources = new List<Dictionary<string, string>>();
159for (int j = 0; j < 10; j++)
160 {
161var dict = new Dictionary<string, string>();//数据行（Key:列名，Value：列值）162 list.ForEach(item =>
163 {
164 dict.Add(item.ColumnName.Replace("", "_").Replace("-", "_"), item.Values[j]);
165 });
166 dataSources.Add(dict);
167 }
168foreach (var item in list)
169 {
170var index = list.IndexOf(item);
171var arr = Regex.Split(item.ColumnName, "____", RegexOptions.IgnoreCase);
172var tag = tags.FirstOrDefault(i => i.F_METER_NAME.ToUpper().Equals(arr[0].ToUpper()));
173var column = CreateDataGridTextColumn(item.ColumnName.Replace("", "_").Replace("-", "_"), item.ColumnName, tag);
174var cl = datagrid.Columns.FirstOrDefault(i => i.Header.ToString().StartsWith(tag.F_METER_NAME));
175if (cl != null)
176 cl = column;
177else178 datagrid.Columns.Add(column);
179 }
180 datagrid.ItemsSource = GetEnumerable(dataSources).ToDataSource();
181 }
182183publicstaticvoid GetSource(List<T_METER> tags, ObservableCollection<Obj> objs, ref DataGrid datagrid)
184 {
185var list = Grenartor(tags, objs);
186var dataSources = new List<Dictionary<string, string>>();
187for (int j = 0; j < 10; j++)
188 {
189var dict = new Dictionary<string, string>();//数据行（Key:列名，Value：列值）190 list.ForEach(item =>
191 {
192 dict.Add(item.ColumnName.Replace("", "_").Replace("-", "_"), item.Values[j]);
193 });
194 dataSources.Add(dict);
195 }
196 datagrid.ItemsSource = GetEnumerable(dataSources).ToDataSource();
197 }
198199publicstaticvoid CreateDataGrid(List<T_METER> tags, ref DataGrid datagrid)
200 {
201var list = Grenartor(tags, null);
202var dataSources = new List<Dictionary<string, string>>();
203for (int j = 0; j < 10; j++)
204 {
205var dict = new Dictionary<string, string>();//数据行（Key:列名，Value：列值）206 list.ForEach(item =>
207 {
208 dict.Add(item.ColumnName.Replace("", "_").Replace("-", "_"), item.Values[j]);
209 });
210 dataSources.Add(dict);
211 }
212foreach (var item in list)
213 {
214var index = list.IndexOf(item);
215var arr = Regex.Split(item.ColumnName, "____", RegexOptions.IgnoreCase);
216var tag = tags.FirstOrDefault(i => i.F_METER_ID.ToUpper().Equals(arr[0].ToUpper()));
217var column = CreateDataGridTextColumn(item.ColumnName.Replace("", "_").Replace("-", "_"), item.ColumnName, tag);
218var cl = datagrid.Columns.FirstOrDefault(i => i.Header.ToString().StartsWith(tag.F_METER_NAME));
219if (cl != null)
220 cl = column;
221else222 datagrid.Columns.Add(column);
223 }
224 datagrid.ItemsSource = GetEnumerable(dataSources).ToDataSource();
225 }
226 }
227 }
四，数据源构造（实现行列转换）类
1
using
System;
2
using
System.Collections;
3
using
System.Collections.Generic;
4
using
System.Collections.ObjectModel;
5
using
System.Reflection;
6
using
System.Reflection.Emit;
7
8
namespace
Test.Util
9
{
10
/*
==============================
11
* Desc：DataSourceCreator
12
* Author：hezp
13
* Date：2014/8/14 15:51:04
14
* ==============================
*/
15
public
static
class
DataSourceCreator
16
{
17
public
static ObservableCollection<object> ToDataSource(this IEnumerable<IDictionary> list)
18 {
19 IDictionary firstDict = null;
20bool hasData = false;
21foreach (IDictionary currentDict in list)
22 {
23 hasData = true;
24 firstDict = currentDict;
25break;
26 }
27if (!hasData)
28 {
29returnnew ObservableCollection<object> { };
30 }
31if (firstDict == null)
32 {
33thrownew ArgumentException("IDictionary entry cannot be null");
34 }
35 Type objectType = null;
36 TypeBuilder tb = GetTypeBuilder(list.GetHashCode());
37 ConstructorBuilder constructor =
38 tb.DefineDefaultConstructor(
39 MethodAttributes.Public |
40 MethodAttributes.SpecialName |
41 MethodAttributes.RTSpecialName);
42foreach (DictionaryEntry pair in firstDict)
43 {
44 45 CreateProperty(tb,
46 Convert.ToString(pair.Key),
47 pair.Value == null ?
48typeof(object) :
49 pair.Value.GetType());
50 51 }
52 objectType = tb.CreateType();
53return GenerateArray(objectType, list, firstDict);
54 }
55privatestatic ObservableCollection<object> GenerateArray(Type objectType, IEnumerable<IDictionary> list, IDictionary firstDict)
56 {
57var itemsSource = new ObservableCollection<object>();
58foreach (var currentDict in list)
59 {
60object row = Activator.CreateInstance(objectType);
61foreach (DictionaryEntry pair in firstDict)
62 {
63if (currentDict.Contains(pair.Key))
64 {
65 PropertyInfo property =
66 objectType.GetProperty(Convert.ToString(pair.Key));
67 property.SetValue(
68 row,
69 Convert.ChangeType(
70 currentDict[pair.Key],
71 property.PropertyType,
72null),
73null);
74 }
75 }
76 itemsSource.Add(row);
77 }
78return itemsSource;
79 }
80privatestatic TypeBuilder GetTypeBuilder(int code)
81 {
82 AssemblyName an = new AssemblyName("TempAssembly" + code);
83 AssemblyBuilder assemblyBuilder =
84 AppDomain.CurrentDomain.DefineDynamicAssembly(
85 an, AssemblyBuilderAccess.Run);
86 ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("MainModule");
87 TypeBuilder tb = moduleBuilder.DefineType("TempType" + code
88 , TypeAttributes.Public |
89 TypeAttributes.Class |
90 TypeAttributes.AutoClass |
91 TypeAttributes.AnsiClass |
92 TypeAttributes.BeforeFieldInit |
93 TypeAttributes.AutoLayout
94 , typeof(object));
95return tb;
96 }
97privatestaticvoid CreateProperty(TypeBuilder tb, string propertyName, Type propertyType)
98 {
99 FieldBuilder fieldBuilder = tb.DefineField("_" + propertyName,
100 propertyType,
101 FieldAttributes.Private);
102103 PropertyBuilder propertyBuilder =
104 tb.DefineProperty(
105 propertyName, PropertyAttributes.HasDefault, propertyType, null);
106 MethodBuilder getPropMthdBldr =
107 tb.DefineMethod("get_" + propertyName,
108 MethodAttributes.Public |
109 MethodAttributes.SpecialName |
110 MethodAttributes.HideBySig,
111 propertyType, Type.EmptyTypes);
112 ILGenerator getIL = getPropMthdBldr.GetILGenerator();
113 getIL.Emit(OpCodes.Ldarg_0);
114 getIL.Emit(OpCodes.Ldfld, fieldBuilder);
115 getIL.Emit(OpCodes.Ret);
116 MethodBuilder setPropMthdBldr =
117 tb.DefineMethod("set_" + propertyName,
118 MethodAttributes.Public |
119 MethodAttributes.SpecialName |
120 MethodAttributes.HideBySig,
121null, new Type[] { propertyType });
122 ILGenerator setIL = setPropMthdBldr.GetILGenerator();
123 setIL.Emit(OpCodes.Ldarg_0);
124 setIL.Emit(OpCodes.Ldarg_1);
125 setIL.Emit(OpCodes.Stfld, fieldBuilder);
126 setIL.Emit(OpCodes.Ret);
127 propertyBuilder.SetGetMethod(getPropMthdBldr);
128 propertyBuilder.SetSetMethod(setPropMthdBldr);
129 }
130 }
131 }
五，显示效果
原文：http://www.cnblogs.com/mybluesky99/p/3939691.html
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