Lowyat.NET: Latest topics by sonido

Random C# discussion

sonido — Thu, 26 Jun 2014 21:56:42 +0800

QUOTE(alien3d @ Jun 26 2014, 07:31 PM)

System Analyst..-->headacher
Project Manager-> looooser
tester --> game tester.
Writer -> Write documentation..
Salesman-> Sales mah .........

me.. three man show for now.
** writing c# code for now.. just learn 2 days ago.. ..
[right][snapback]68922189[/snapback][/right]

C# gooding ah ? hehehe

XAML binding

sonido — Thu, 26 Jun 2014 21:39:19 +0800

In XAML, if i want to bind to an object (TestViewModel) that has a property (MyProperty) i can write it like tis,

CODE

the situation is, lets say the object (TestViewModel) contains the property (MyProperty) and also a function (MyFunction) that takes a string parameter and returns a string.

now how do i bind to both the property and the function ?

CODE

<Window x:Class="AppTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:l="clr-namespace:AppTest"
Title="MainWindow" Height="500" Width="500">

<Window.Resources>
<ObjectDataProvider x:Key="testViewModel" ObjectType="{x:Type l:TestViewModel}" /> <------here i purposely ommit MethodName bcoz textBox1 can't read
<ObjectDataProvider.MethodParameters>
<sys:String>Default</sys:String>
</ObjectDataProvider.MethodParameters>
</Window.Resources>

<Grid Name="grid1">
<TextBox Name="textBox1" Text="{Binding Source={StaticResource testViewModel}, Path=MyProperty}" />
<TextBox Name="textBox2" Text="{Binding Source={StaticResource testViewModel}, Path=MethodParameters[0]}" /> <-----my problem here wont read
</Grid>

as you can see i can only bind to either a property or a function, but not both simultaneously. how to fix this problem ?

The Binding class

sonido — Sat, 31 May 2014 10:12:01 +0800

When initializing a new System.Windows.Data.Binding class as in,

CODE

var binding = new Binding("Value")
{
source = new myClass("xxx")
};

I just can't understand what is "Value". The Binding ctor has two overloads, one without parameter and another accepts a string path. So why "Value" can be used to construct an instance of this Binding class ?

Very appreciate if anyone sifus can clarify the usage of this System.Windows.Data.Binding.

Thank you.

Description issue

sonido — Sun, 11 May 2014 15:12:11 +0800

having prob with translating english to malay for 1 of my sattelite assembly ms-BN culture.

i just dont know what malay word for workbook and sheets...

i google trnslate

Excel workbook = buku kerja Excel <=acceptable
Excel sheets = cadar-cadar Excel <=dafuq

compare coding, providing description is twice take the amount of time. let alone provide proffesional high class sentence..

Playing wit Exception

sonido — Wed, 09 Apr 2014 16:38:04 +0800

here is my custom made error logger class which is incomplete.

i need to include stack trace info of the method name and oso the line number where the error occured. refer in the TODO section where i want to append these info.

pls help complete it and the reward is you can use my ErrorLogger.vb class for free.

CODE

Imports System.Reflection
Imports System.IO
Imports System.Text

''' <summary>Provides method to write error information into a text file.</summary>
Public NotInheritable Class ErrorLogger

Private Sub New()
End Sub

'Public Shared Sub Write(message As String, source As String, trace As String)
Public Shared Sub Write(e As Exception)

' The dir location for the error text is where this code is running.
Dim location As String = Assembly.GetExecutingAssembly().Location
Dim filePath As String = Path.GetDirectoryName(location) & "\ErrorLog.txt"

' Create a new text file to write the error info. Or if the file
' already exists, overwrite its content with the latest error.
Using s As New StreamWriter(filePath, False)

s.WriteLine("Message : {0}", e.Message)
s.WriteLine("Source : {0}", e.Source)
s.WriteLine("StackTrace :")

Dim st As New StackTrace(e, True)

For Each sf As StackFrame In st.GetFrames

Dim log As New StringBuilder("At ")

Dim method As MethodBase = sf.GetMethod()

' append class name
log.Append(method.DeclaringType.ToString)
log.Append(".")

' TODO :
' here need to append the method name
' here need to append the line number where the error is thrown.

s.WriteLine(log.ToString)
Next
End Using
End Sub

End Class