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using System;
using System.Reflection;
using System.Windows.Controls;
using Pfz.DataTypes;
namespace Pfz.WpfControls
{
/// <summary>
/// Control that shows a string representation of many types, such as
/// integers, short-integers, decimals and others. Of course, string
/// itself is valid.
/// </summary>
public class StringControl:
UserControl,
IValueControl,
IHasPreferredDataType,
IValueContainer<string>,
IValueContainer<long>,
IValueContainer<long?>,
IValueContainer<int>,
IValueContainer<int?>,
IValueContainer<short>,
IValueContainer<short?>,
IValueContainer<byte>,
IValueContainer<byte?>,
IValueContainer<sbyte>,
IValueContainer<sbyte?>,
IValueContainer<decimal>,
IValueContainer<decimal?>,
IValueContainer<EmailString>
{
private TextBox fTextBox = new TextBox();
/// <summary>
/// Creates a new StringControl instance.
/// </summary>
public StringControl()
{
Content = fTextBox;
}
/// <summary>
/// Clears the internal textbox.
/// </summary>
public void Clear()
{
fTextBox.Clear();
}
/// <summary>
/// Gets or sets a value indicating if this control is read-only.
/// </summary>
public bool IsReadOnly
{
get
{
return fTextBox.IsReadOnly;
}
set
{
fTextBox.IsReadOnly = value;
}
}
/// <summary>
/// Gets or sets the value as a simple string.
/// </summary>
public string Value
{
get
{
string text = fTextBox.Text;
if (text.Length == 0)
return null;
return text;
}
set
{
fTextBox.Text = value;
}
}
#region IValueContainer Members
object IValueContainer.Value
{
get
{
var preferredProperty = fPreferredValueProperty;
if (preferredProperty == null)
return Value;
return fPreferredValueProperty.GetValue(this, null);
}
set
{
if (value == null)
Clear();
else
fTextBox.Text = value.ToString();
}
}
#endregion
#region IValueContainer<long> Members
long IValueContainer<long>.Value
{
get
{
return Convert.ToInt64(Value);
}
set
{
Value = value.ToString();
}
}
#endregion
#region IValueContainer<long?> Members
long? IValueContainer<long?>.Value
{
get
{
string value = Value;
if (string.IsNullOrEmpty(value))
return null;
return Convert.ToInt64(value);
}
set
{
if (value.HasValue)
Value = value.Value.ToString();
else
Clear();
}
}
#endregion
#region IValueContainer<int> Members
int IValueContainer<int>.Value
{
get
{
return Convert.ToInt32(Value);
}
set
{
Value = value.ToString();
}
}
#endregion
#region IValueContainer<int?> Members
int? IValueContainer<int?>.Value
{
get
{
string value = Value;
if (string.IsNullOrEmpty(value))
return null;
return Convert.ToInt32(value);
}
set
{
if (value.HasValue)
Value = value.Value.ToString();
else
Clear();
}
}
#endregion
#region IValueContainer<short> Members
short IValueContainer<short>.Value
{
get
{
return Convert.ToInt16(Value);
}
set
{
Value = value.ToString();
}
}
#endregion
#region IValueContainer<short?> Members
short? IValueContainer<short?>.Value
{
get
{
string value = Value;
if (string.IsNullOrEmpty(value))
return null;
return Convert.ToInt16(value);
}
set
{
if (value.HasValue)
Value = value.Value.ToString();
else
Clear();
}
}
#endregion
#region IValueContainer<byte> Members
byte IValueContainer<byte>.Value
{
get
{
return Convert.ToByte(Value);
}
set
{
Value = value.ToString();
}
}
#endregion
#region IValueContainer<byte?> Members
byte? IValueContainer<byte?>.Value
{
get
{
string value = Value;
if (string.IsNullOrEmpty(value))
return null;
return Convert.ToByte(value);
}
set
{
if (value.HasValue)
Value = value.Value.ToString();
else
Clear();
}
}
#endregion
#region IValueContainer<sbyte> Members
sbyte IValueContainer<sbyte>.Value
{
get
{
return Convert.ToSByte(Value);
}
set
{
Value = value.ToString();
}
}
#endregion
#region IValueContainer<sbyte?> Members
sbyte? IValueContainer<sbyte?>.Value
{
get
{
string value = Value;
if (string.IsNullOrEmpty(value))
return null;
return Convert.ToSByte(value);
}
set
{
if (value.HasValue)
Value = value.Value.ToString();
else
Clear();
}
}
#endregion
#region IValueContainer<decimal> Members
decimal IValueContainer<decimal>.Value
{
get
{
return Convert.ToDecimal(Value);
}
set
{
Value = value.ToString();
}
}
#endregion
#region IValueContainer<decimal?> Members
decimal? IValueContainer<decimal?>.Value
{
get
{
string value = Value;
if (string.IsNullOrEmpty(value))
return null;
return Convert.ToDecimal(value);
}
set
{
if (value.HasValue)
Value = value.Value.ToString();
else
Clear();
}
}
#endregion
#region IHasPreferredDataType Members
private PropertyInfo fPreferredValueProperty;
/// <summary>
/// Gets or sets the data-type used by the IValueContainer.Value property.
/// </summary>
public Type PreferredDataType
{
get
{
var property = fPreferredValueProperty;
if (property == null)
return null;
return property.DeclaringType;
}
set
{
if (value == null)
{
fPreferredValueProperty = null;
return;
}
Type type = typeof(IValueContainer<>).MakeGenericType(value);
PropertyInfo propertyInfo = type.GetProperty("Value");
fPreferredValueProperty = propertyInfo;
}
}
#endregion
#region IValueContainer<EmailString> Members
EmailString IValueContainer<EmailString>.Value
{
get
{
return new EmailString(fTextBox.Text);
}
set
{
fTextBox.Text = value.ToString();
}
}
#endregion
}
}
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I started to program computers when I was 11 years old, as a hobbyist, programming in AMOS Basic and Blitz Basic for Amiga.
At 12 I had my first try with assembler, but it was too difficult at the time. Then, in the same year, I learned C and, after learning C, I was finally able to learn assembler (for Motorola 680x0).
Not sure, but probably between 12 and 13, I started to learn C++. I always programmed "in an object oriented way", but using function pointers instead of virtual methods.
At 15 I started to learn Pascal at school and to use Delphi. At 16 I started my first internship (using Delphi). At 18 I started to work professionally using C++ and since then I've developed my programming skills as a professional developer in C++ and C#, generally creating libraries that help other developers do their work easier, faster and with less errors.
Want more info or simply want to contact me?
Take a look at:
http://paulozemek.azurewebsites.net/
Or e-mail me at: paulozemek@outlook.com
Codeproject MVP 2012, 2015 & 2016
Microsoft MVP 2013-2014 (in October 2014 I started working at Microsoft, so I can't be a Microsoft MVP anymore).