Dereferencing a property

[Max Sandman]

Say I've got a control c = textBox1 and a string that is a property of
c, say string s = "Text". Is there a way in C# to use c and s to get
the contents of textbox1.Text?

sandman

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[Morten Wennevik]

s = ((TextBox)c).Text ?

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[Nicholas Paldino [.NET/C# MVP]]

Max,

Yes, you can use reflection to do this:

// Get the type of c first.
Type pobjTypeOfC = c.GetType();

// Now get the property on that type.
PropertyInfo pobjPropInfo = pobjTypeOfC.GetProperty(s);

// Now get the value for that property.
string pobjText = (string) pobjPropInfo.GetValue(c, null);

Basically, you are getting the type information for the instance of c in
the first line. Then, you are getting the property information in the
second, finally invoking the property in the third.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- ni**************@exisconsulting.com

"Max Sandman" <sa*********@yahoo.com> wrote in message
news:uo**************@TK2MSFTNGP11.phx.gbl...

Say I've got a control c = textBox1 and a string that is a property of
c, say string s = "Text". Is there a way in C# to use c and s to get
the contents of textbox1.Text?

sandman

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[Ignacio Machin]

Hi Max,

You can do that with reflection:
textBox1.GetType().GetProperty( property_name ) give you a PropertyInfo
instance ( or null if the property does not exist ), you can then call
GetValue to get the value of it, to GetValue you have to pass the original
instance this property came from.

Hope this help,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"Max Sandman" <sa*********@yahoo.com> wrote in message
news:uo**************@TK2MSFTNGP11.phx.gbl...

Say I've got a control c = textBox1 and a string that is a property of
c, say string s = "Text". Is there a way in C# to use c and s to get
the contents of textbox1.Text?

sandman

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[Max Sandman]

That's exactly what I needed to know. Thanks, guys.

sandman

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