textblock foreground problem

9 replies. Latest Post by hansmukh999 on January 31, 2008.

(1)

Member

14 points

textblock foreground problem

01-30-2008 2:26 AM |

hi all.. can any body help in findaing way that vil help me to change foregroung property dinamacly from code behind(C#)
i have following text block in mt MyTest.xaml

<TextBlock Opacity="0.0" RenderTransformOrigin="0.5,0.5" Width="140" Height="43"

Canvas.Left="2.0" Canvas.Top="1" FontSize ="0" FontStyle="Normal" Foreground="Red"

x:Name="overlayed_text1">

and am using folling to get/set values of text block from code behind (MtTest.Xaml.cs)

// Setting/Getting text
public string TextElementText{
get
{
return textElement.Text;
}
set
{
textElement.Text = value;
}
}
// Setting/Getting Font Size
public double TextElementFontSize
{
get
{
return textElement.FontSize;
}
set
{
textElement.FontSize = value;
}
}
// Setting/Getting Opacity
public double TextElementOpacity
{
get
{
return textElement.Opacity;
}
set
{
textElement.Opacity = value;
}
}

but stuck here, dont know how to assign foreground value by this..
public string TextElementForeground
{
set
{
textElement.Foreground = value
}
get
{
return textElement.Foreground;
}
}

i will be very thankful of positive reply that let me fix this..thx all

mchlsync

Star

14606 points

2,730 Posts

Re: textblock foreground problem

01-30-2008 2:58 AM |

hansmukh999:
can any body help in findaing way that vil help me to change foregroung property dinamacly from code behind

Page.xaml

Page.xaml.cs ( Page_Loaded event)

myTextBlock.Foreground = new SolidColorBrush (Colors.Red);

but your code looks like you are trying to create your own control.

(If this has answered your question, please click on "Mark as Answer" on this post. Thank you!)

Regards,
Michael Sync
Silverlight MVP

Blog : http://michaelsync.net

hansmukh999

Member

14 points

19 Posts

Re: Re: textblock foreground problem

01-30-2008 3:16 AM |

thx for the reply..it is workig cool..now the problem is that how come i convert string to color. i am geting color name in string format

string colorToApply=""Yellow";

TextElementForeground = new SolidColorBrush(Color.xxxx);

mchlsync

Star

14606 points

2,730 Posts

Re: Re: textblock foreground problem

01-30-2008 5:24 AM |

hansmukh999:
thx for the reply..it is workig cool.

Your welcome. Please mark as answered on that post if it's working. Thanks. :)

hansmukh999:
how come i convert string to color. i am geting color name in string format

Normally, we used to convert the string to known-color by using TypeDescriptor. Unfortunately, I'm not able to use it in Silverlight project.

(If this has answered your question, please click on "Mark as Answer" on this post. Thank you!)

Regards,
Michael Sync
Silverlight MVP

Blog : http://michaelsync.net

bluearc

Participant

1500 points

325 Posts

Re: Re: textblock foreground problem

01-30-2008 6:40 AM |

Ttyr this..

this will help you a lot..

using System;

using System.Windows.Media;

using System.Reflection;

namespace Ravs

{

public class ColorReflector

{

public Color GetThisColor(string colorString)

{

Type colorType = (typeof(System.Windows.Media.Colors));if (theType.GetProperty(colorString) != null)

{

object o = theType.InvokeMember(colorString, BindingFlags.GetProperty, null, null, null);

if (o != null)

{

return (Color)o;

}

return Colors.Black;

}

Save above code in any .cs file

to use this in your code

use it like this

Ravs.ColorReflector cr = new Ravs.ColorReflector();

string colorToApply=""Yellow";

TextElementForeground = new SolidColorBrush(cr.GetThisColor(colorToApply));

IF this answer helps you the mark it answered

Ravi Kant Srivastava
(Application Developer)
Scope Technology
India/South Africa

mchlsync

Star

14606 points

2,730 Posts

Re: Re: textblock foreground problem

01-30-2008 7:27 AM |

Great job..

BTW, what is "theType"?

(If this has answered your question, please click on "Mark as Answer" on this post. Thank you!)

Regards,
Michael Sync
Silverlight MVP

Blog : http://michaelsync.net

bluearc

Participant

1500 points

325 Posts

Re: Re: textblock foreground problem

01-30-2008 7:35 AM |

Sorry, I just forgot to change the variable.. initially i used theType , then i renamed to colorType... did a mistake in hurry...

Now it is fine.. have a look to the code given below...

using System;

using System.Windows.Media;

using System.Reflection;namespace Ravs

{

public class ColorReflector

{

public Color GetThisColor(string colorString)

{

Type colorType = (typeof(System.Windows.Media.Colors));if (theType.GetProperty(colorString) != null)

{

object o = colorType.InvokeMember(colorString, BindingFlags.GetProperty, null, null, null);if (o != null)

{

return (Color)o;

}

return Colors.Black;

}

Save above code in any .cs file

to use this in your code

use it like this

Ravs.ColorReflector cr = new Ravs.ColorReflector();

string colorToApply=""Yellow";

TextElementForeground = new SolidColorBrush(cr.GetThisColor(colorToApply));

"If this answer helps you then mark it answered"

Ravi Kant Srivastava
(Application Developer)
Scope Technology
India/South Africa

mchlSync

Star

14606 points

2,730 Posts

Re: Re: textblock foreground problem

01-30-2008 7:40 AM |

Great.. Thanks a lot. (I can't mark it as answered since I'm not thread starter. However, I'm appreciate your code. I've learnt something today. :) I was looking too much for TypeDescriptor and ColorConverter. )

(If this has answered your question, please click on "Mark as Answer" on this post. Thank you!)

Regards,
Michael Sync
Silverlight MVP

Blog : http://michaelsync.net

bluearc

Participant

1500 points

325 Posts

Re: Re: textblock foreground problem

01-30-2008 8:00 AM |

Thanks for the comments, well it it don't matter that much if it is not marked as answered...

as long as i can contribute my part to the community....

Well, normally we don't look at thr Reflection... but i belive it is the most powerfull.... Namespace...

Ravi Kant Srivastava
(Application Developer)
Scope Technology
India/South Africa

hansmukh999

Member

14 points

19 Posts

Re: Re: textblock foreground problem

01-31-2008 8:17 AM |

thx both of you, it is working cool now, as new to silver light ist is nt possible for me to do this, but your experienced help me , cant help saying u guys thanx again..

i vill disturb u guys again in future..heheh.chill n god bless u