WPF – add key short cut for windows

Posted on February 11, 2017 by WUDI

there is two ways to add wpf key short cut.

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        this.KeyUp += MainWindow_KeyUp;
 
        private void MainWindow_KeyUp(object sender, KeyEventArgs e)
        {
            if(e.Key == Key.D1)
            {
                MessageBox.Show("1 is press");
            }
        }

but for the most normal way to do is to wpf resource.

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    <Window.Resources>
        <RoutedUICommand x:Key="ClickCommand" Text="Text" />
    </Window.Resources>
    <Window.InputBindings>
        <KeyBinding Command="{Binding Path=button_Click}" 
                Key="O" 
                Modifiers="Control"/>
        <KeyBinding Key="C" Command="{StaticResource ClickCommand}" />
    </Window.InputBindings>
 
    <Window.CommandBindings>
        <CommandBinding Command="{StaticResource ClickCommand}" 
                    Executed="button_Click" />
    </Window.CommandBindings>
 
    <Grid>
        <Button x:Name="button1" Content="1" HorizontalAlignment="Left" Margin="101,140,0,0" VerticalAlignment="Top" Width="75" Click="button1_Click" Command="{StaticResource ClickCommand}"/>
        <Button x:Name="button" Content="2" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Margin="181,140,0,0" Click="button_Click" Command="{StaticResource ClickCommand}"/>
    </Grid>
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xamarin debug android on device and release to apk

Posted on February 11, 2017 by WUDI

this example code could be find on following url
https://github.com/emacslisp/XNA2DGame/tree/dev/Android/PlatformReading

1. How to build apk from visual studio
<1> change build mode from ‘debug’ to ‘release’
<2> select project properties and change option on ‘Application’, ‘Android Manifest’, ‘Android Options’

Android_Setting1

2. How to debug android with xamarin C# code
debug on physical device is the best way to go, simulator is very slow.

choose device and press F5

PlatformReading_Android

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MonoGame – Personal Project and step by step tutorial

Posted on February 5, 2017 by WUDI

XNA Framework continued to developed by MonoGame.

I migrated my xna game to MonoGame using OpenGL
https://github.com/emacslisp/XNA2DGame

for ‘dev’ is Game using MonoGame with visual studio 2015
in ‘master’ branch is XNA 4.0 using visual studio 2010.

ExtremePong

game_1

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c# – NHibernate.MappingException: No persister for: XYZ

Posted on December 11, 2016 by WUDI

nhibernate

as screen dump show, build action of XYZ.hbm.xml should be ‘Embedded Resource’.

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autofac build

Posted on September 27, 2016 by WUDI

get source code via git clone https://github.com/autofac/Autofac

open then solution Autofac.sln and build.

However, if you look at Reference of Autofac.xproj, it has two References, one is .net 4.5 and another one is .net core 1.0.

the output dll will be two as well, in bin folder, you could see two folders with name of two versions, one dll is for .net 4.5, another one is for .net core 1.0. (very important).
autofac-output

if you add some code (for example, System.Diagnostics.Trace.WriteLine) only supported by .net 4.5, then you could build .net 4.5 dll only.

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.net core – source code analysis starting

Posted on July 24, 2016 by WUDI

.NET Core is a cross-platform free and open-source managed software framework similar to .NET Framework. It consists of CoreCLR, a complete cross-platform runtime implementation of CLR, the virtual machine that manages the execution of .NET programs.

the Major code is developed by C++.

dotnet/cli – for CLI tools and questions
dotnet/corefx – for API issues and questions
dotnet/coreclr – for runtime issues
nuget/home – for NuGet questions and issues
aspnet/home – for ASP.NET Core questions and issues.

It is open source. and developer could investigate deeply under to every detail of C# running environment.

Building corefx and coreclr are almost same.

Step 1: open visual studio 2015 x64 command
Step 2: set cmake to PATH (install cmake if system don’t have)
Step 3: run build.cmd command.

bulid-net_core_cil

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Visual Studio 2015 with Update 2 Short cut changes

Posted on May 27, 2016 by WUDI

jumping between pair “#region #endregion” short cut is Ctrl+] originally.

However, Now in Visual studio 2015 jump between the pair are changed to Ctrl+Shift+Up/Down.

Ctrl+Shift+8 is not working any more, Ctrl+- has to be used.

I will update more short cut changed for VS2015 comparing to old version such VS2010

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C# Reflection – set object enum property value

Posted on April 26, 2016 by WUDI

using C# Reflection can convert DataTable to Object easily.
However, it may be have some problems when converting enum which is special, we don’t know enum type and enum type should get from reflection.

Here is code sample for c# enum property covert.

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var a =  new YourObject(); 
PropertyInfo propertyInfo = a.GetType().GetProperty(s);
if (propertyInfo.PropertyType.IsEnum)
  {
    propertyInfo.SetValue(a, Convert.ChangeType(Enum.Parse(propertyInfo.PropertyType, dr[index++].ToString()), propertyInfo.PropertyType), null);
  }
 else
    propertyInfo.SetValue(a, Convert.ChangeType(dr[index++].ToString(), propertyInfo.PropertyType), null);
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some tricky in ng-repeat update model in ionic

Posted on April 4, 2016 by WUDI

ng-repeat is to loop thought object list and auto generated html.

for example
in controller, we declare
$scope.workspaces.

Now $scope.workspaces = getDataFromDatabase();

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<li class="workspace-object" ng-repeat="w in workspaces | filter:searchQuery" ng-click="selectWorkspace(w)">
    <a href="" class="workspace-link">{{w.name | titleCase }}</a>
</li>

It will not updated.

Make following change it will work.

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$scope.work={}; //very important, declare object first.
$scope.work.workspaces = getDataFromDatabase(); //workspaces object should under work object.

change ng-repeat to be ng-repeat=”w in work.workspaces | filter:searchQuery”

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Angular.js compile document to tree struction

Posted on March 20, 2016 by WUDI

the first step of angular.js is to compile document to element and childnode. this struction is similar with DOM.

module is key concept of angular.js. what is angular.js module.
A module is a collection of services, directives, controllers, filters, and configuration information.

for example:

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var element = $compile('<p>{{total}}</p>')(scope);

it calls compile(…) function to find ‘ng-module’, ‘ng-controller’, something like ‘ng-xxxx’ and so on.

shortly, this steps compile html to tree, and Addmodule to lists, AddDirectives to directives lists.

this is critical steps of beginning. I will add more example and code to explain.

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