object component

[Jim McGivney]

On an aspx page with C# code behind I am trying to programmaticall y change
the ImageUrl of various ImageButtons in response to the text contained in
corresponding label controls.

The following code works:

PropertyDescrip torCollection properties =
TypeDescriptor. GetProperties(t his.ImageButton 12);

PropertyDescrip tor myProperty = properties.Find ("ImageUrl", false);

myProperty.SetV alue(ImageButto n12,@"C:\Inetpu b\wwwroot\BB\im ages\X.BMP")

Now I want to replace all references to "ImageButto n12" in the above code
with a member of an array such as "pram[2]" so that I can loop through all
the ImageBoxes easily in code.

Where:

string[] pram = new string[]
{"Label33","Lab el34","Label35" ,"Label36","Lab el37","Label38" ,"Label39"};

or

string[] pram = new string[] {"this.Label33" ,"this.Label34" ,"this.Label35" ,"
this.Label36"," this.Label37"," this.label38"," this.Label39"};

or

Object[] pram = new Object[]
{"this.Label33" ,"this.Label34" ,"Label35","Lab el36","Label37" ,"Label38","Lab el39"};

Each time a get an "Object reference not set to an instance of an object"
error.

I have even tried changing the array to a component array, but then I get a
"Can't implicitly change type" error.

The data type specified is "object component" I need to build an array of
object components that I can address by index number.

Any insight would be appreciated.

Thanks,

Jim

[Eric]

Although I'm more a VB programmer, I think I know the answer:
(correct me if I'm wrong)

in the line :
myProperty.SetV alue(ImageButto n12,@"C:\Inetpu b\wwwroot\BB\im ages\X.BMP")

ImageButton12 is a object, in this case a button.
What you are trying to do is to replace a button-object with a string.
The setvalue method then does not recognize it as an object and gives an
error.

rg.
Eric


"Jim McGivney" <mc****@no-spam.sbcglobal. net> schreef in bericht
news:u6******** ********@tk2msf tngp13.phx.gbl. ..

On an aspx page with C# code behind I am trying to programmaticall y change
the ImageUrl of various ImageButtons in response to the text contained in
corresponding label controls.

The following code works:

PropertyDescrip torCollection properties =
TypeDescriptor. GetProperties(t his.ImageButton 12);

PropertyDescrip tor myProperty = properties.Find ("ImageUrl", false);

myProperty.SetV alue(ImageButto n12,@"C:\Inetpu b\wwwroot\BB\im ages\X.BMP")

Now I want to replace all references to "ImageButto n12" in the above code
with a member of an array such as "pram[2]" so that I can loop through
all the ImageBoxes easily in code.

Where:

string[] pram = new string[]
{"Label33","Lab el34","Label35" ,"Label36","Lab el37","Label38" ,"Label39"};

or

string[] pram = new string[]
{"this.Label33" ,"this.Label34" ,"this.Label35" ," this.Label36","
this.Label37"," this.label38"," this.Label39"};

or

Object[] pram = new Object[]
{"this.Label33" ,"this.Label34" ,"Label35","Lab el36","Label37" ,"Label38","Lab el39"};

Each time a get an "Object reference not set to an instance of an object"
error.

I have even tried changing the array to a component array, but then I get
a "Can't implicitly change type" error.

The data type specified is "object component" I need to build an array of
object components that I can address by index number.

Any insight would be appreciated.

Thanks,

Jim