WPF 应用开发记录
最近刚刚学习WPF, 搞了大约1个多星期。
以下是值得记录的point
一、建立FRAME，使得navigation service 可以使用
setting up WPF application in vs2012 professional.
自带的mainwindow.xaml file 添加：
这样就可以在新添加的page里使用：
xxx page = new xxx();
NavigationService.Navigate(page);
进行换页。
二、建立数据库，连接到应用并使用LINQ
在server explorer里create new sql database
create new table1
然后将新建dbml 文件，拖拽table1到dbml视图内。即可建立连接。
在dbml.cs file 内添加
[Database]
partial class XXXDataContext:DataContext
{
}
这样在其他文件中即可使用LINQ来访问数据库：
XXXDataContext db = new XXXDataContext();
var data = from r in db.table1.......
三、Parse CSV files
//open the csv file in windows and get path of it, then using streamReader to read it
private void _csv_upload_Click(object sender, RoutedEventArgs e)
{
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
Nullable result = dlg.ShowDialog();
TaxList _taxList = new TaxList();
if (result == true)
{
// Open document
_taxList.CreateTime = DateTime.Now;
string path = dlg.FileName;
string filename = System.IO.Path.GetFileName(path);
_taxList.FileName = filename;
_taxList.Id = userId;
StreamReader streamRd = new StreamReader(path);
NewCsvReader ncr = new NewCsvReader();
ncr.GetHeader(streamRd, _taxList, db);
}
this._listTaxlist.ItemsSource = LoadCSVBoxListData();
}
//NewCsvReader.cs
//使用了CsvHelper，在Nuget extension中搜索CvsHelper并添加
//6为目前csv file内field的个数
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CsvHelper;
using System.IO;
namespace newtest1
{
class NewCsvReader
{
public void GetHeader(StreamReader m, TaxList tlist, SalesDataContext db)
{
var csvRd = new CsvHelper.CsvReader(m);
csvRd.Configuration.HasHeaderRecord = false;
string ListName="";
if(csvRd.Read())
ListName = csvRd.GetField(0);
tlist.ListName = ListName;
csvRd.Read();
string serialNum = csvRd.GetField(0);
tlist.SerialNum = serialNum;
csvRd.Read();
string Notify = csvRd.GetField(0);
tlist.Notify = Notify;
db.TaxLists.InsertOnSubmit(tlist);
db.SubmitChanges();
//finish dealing with taxlist table
csvRd.Read();
//begin reading the columHeaders
int i=2;
List<string> TimeName= new List<string>();
while(i<6)
{
TimeName.Add(csvRd.GetField(i));
i++;
}
i = i - 2; //i is the num of months list in the file
//begin reading the data
while (csvRd.Read())
{
for (int j = 0; j < i; j++)
{
TaxRow taxrow = new TaxRow();
taxrow.TaxListId = tlist.TaxListId;
taxrow.CreateTime = DateTime.Now;
string acc = csvRd.GetField(0).TrimStart("0".ToCharArray());
taxrow.AccountNum = acc;
taxrow.SiteNum = csvRd.GetField(1);
taxrow.TaxMoney = decimal.Parse(csvRd.GetField(j + 2).Replace("$", ""));
string timetemp = "01"+TimeName[j];
taxrow.Time = Convert.ToDateTime(timetemp);
db.TaxRows.InsertOnSubmit(taxrow);
db.SubmitChanges();
}
}
}
}
}
//注意：需要在dbml文件中选择table1 KeyId 的Property， 把Auto generated Value 设置为True
//否则会出现try to insert value into identical fields 类似的错误提醒
四、Parse txt files
//open the txt file in windows and get path of it, then using streamReader to read it
private void _txt_upload_Click(object sender, RoutedEventArgs e)
{
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
Nullable<bool> result = dlg.ShowDialog();
AddressList _addressList = new AddressList();
if (result == true)
{
_addressList.CreateTime = DateTime.Now;
string path = dlg.FileName;
string filename = System.IO.Path.GetFileName(path);
_addressList.FileName = filename;
_addressList.ListName = filename.Replace(".txt", "");
_addressList.Id = userId;
db.AddressLists.InsertOnSubmit(_addressList);
db.SubmitChanges();
StreamReader streamRd = new StreamReader(path);
ReadText readtext = new ReadText();
readtext.LoadData(streamRd, _addressList);
}
this._listAddlist.ItemsSource = LoadAddBoxListData();
}
//ReadText.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace newtest1
{
class ReadText
{
SalesDataContext db = new SalesDataContext();
public void LoadData(StreamReader m, AddressList alist)
{
TextHelper txthlp = new TextHelper(m);
while (txthlp.Read())
{
AddressRow arow = new AddressRow();
arow.AddressListId = alist.AddressListId;
string acct = txthlp.GetField(0).Replace("-","").TrimStart("0".ToCharArray());
arow.AccountNum = acct;
arow.SiteNum = txthlp.GetField(1);
arow.Status = txthlp.GetField(2);
arow.SICcode = txthlp.GetField(3);
arow.CompanyName = txthlp.GetField(4);
arow.Empty1 = txthlp.GetField(5);
arow.PostBox = txthlp.GetField(7);
arow.AddressStreet = txthlp.GetField(6);
arow.City = txthlp.GetField(8);
arow.State = txthlp.GetField(9);
arow.ZipCode = txthlp.GetField(10);
arow.Empty2 = txthlp.GetField(11);
db.AddressRows.InsertOnSubmit(arow);
db.SubmitChanges();
}
}
}
}
//self made textHelper.cs
//主要提供了GetField, Read()方法
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace newtest1
{
class TextHelper
{
public StreamReader reader;
public string TextLine;
public TextHelper(StreamReader m)
{
reader = m;
}
public string GetField(int pos)
{
int i = pos + 1;
string s = TextLine;
int posend = 0;
int postart = 0;
for (int j = 0; j < s.Length; j++)
{
if (s[j] == ';')
{
i--;
if (i < 1)
{
posend = j;
break;
}
else
{
postart = j + 1;
}
}
}
return s.Substring(postart, posend - postart);
}
public bool Read()
{
if (reader.EndOfStream)
return false;
TextLine = reader.ReadLine();
return true;
}
public int GetRows()
{
return reader.ReadToEnd().Split('\n').Length;
}
}
}
五、Display data in graphs in WPF app
使用了dynamic data display
下载地址：http://dynamicdatadisplay.codeplex.com/wikipage?title=D3v1
注意：需要手动右键选择dll files->property， 选择unblock，然后在add references
否则会遇到无法识别ChartPlotter等controls
需要添加的dll files：Dynamic Data Display, Dynamic Data Display.Control
在xaml文件中添加：
xmlns:d3=http://research.microsoft.com/DynamicDataDisplay/1.0
<d3:ChartPlotter Name="plotter" Margin="10,10,20,10" >
<d3:ChartPlotter.HorizontalAxis>
<d3:HorizontalDateTimeAxis Name="dateAxis"ShowMayorLabels="False"/>
d3:ChartPlotter.HorizontalAxis>
<d3:ChartPlotter.VerticalAxis>
<d3:VerticalAxis Name="countAxis"/>
d3:ChartPlotter.VerticalAxis>
<d3:Header FontFamily="Arial" Content="Tax Money By Month"/>
<d3:VerticalAxisTitleFontFamily="Arial" Content="Money Sum"/>
<d3:HorizontalAxisTitleFontFamily="Arial" Content="Date"/>
d3:ChartPlotter>
//xaml.cs file
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Research.DynamicDataDisplay; // Core functionality
using Microsoft.Research.DynamicDataDisplay.DataSources; // EnumerableDataSource
using Microsoft.Research.DynamicDataDisplay.PointMarkers; // CirclePointMarker
using Microsoft.Research.DynamicDataDisplay.Charts.Navigation;
using System.IO;
using System.Collections;
namespace newtest1
{
///
/// Interaction logic for Graph.xaml
///
public partial class Graph : Page
{
SalesDataContext db = new SalesDataContext();
public Graph(IList acclist)
{
InitializeComponent();
int count = acclist.Count;
LineAndMarker<MarkerPointsGraph> chart;
for (int i = 0; i < count; i++)
{
var firstAcc = acclist[i];
//对于这个用了sum的group的LINQ语句还是研究了一阵的
//这样就可以返回一定时间段的money的sum
var money2 = (from m in db.TaxRows
orderby m.Time
where m.AccountNum == firstAcc.ToString()
group m by m.Time into g
select new
{
Time = g.Key,
TaxMoney = g.Sum(x => x.TaxMoney)
}).ToList();
List<double> tempmoney = new List<double>();
List<DateTime> temptime = new List<DateTime>();
foreach (var r in money2)
{
var num = (double)r.TaxMoney;
DateTime time = r.Time.Value;
tempmoney.Add(num);
temptime.Add(time);
}
var source = new EnumerableDataSource<DateTime>(temptime);
source.SetXMapping(x => dateAxis.ConvertToDouble(x));
var source2 = new EnumerableDataSource<double>(tempmoney);
source2.SetYMapping(y => y);
source2.AddMapping(ShapeElementPointMarker.ToolTipTextProperty, y => String.Format("Value is {0}",y));
CompositeDataSource cmdc = new CompositeDataSource(source, source2);
chart= plotter.AddLineGraph(cmdc,
new Pen(Brushes.Blue, 2),
new CirclePointMarker { Size = 10.0, Fill = Brushes.Red },
new PenDescription("TaxMoneyAmount"));
plotter.Children.Add(new CursorCoordinateGraph());
chart.MarkerGraph.DataSource = cmdc;
}
plotter.Viewport.FitToView();
}
}
}
//ToolTipTextProperty 还有些问题，还没有继续研究下去。
以上流程仅供参考，由于刚刚起步就得停止，估计后续很难会有了。
但是还是学到了很多，以此记录下开发流程。