Control with image loaded from file, cant view in designer

JeremyCAFE · 09-03-2009, 05:06 PM

I have a control that loads an image in the OnLoad and displays this image in OnPaint. However, when I try to use the control on a form, I can't view the form because of the following error:

Parameter is not valid.

at System.Drawing.Bitmap..ctor(String filename)
at Card_Creator.Item_Preview.Item_Preview_Load(Object sender, EventArgs e) in C:\Users\Jeremy\Desktop\SVN\Source Code\Card Creator\Card Creator\Item Preview.cs:line 72

I have seen this issue a few times in the office with trying to reference config files that are loaded in. Is there a way to work around this so I can load something in and not have the designer barf on it?

[Edit: Spelling]

Magos · 09-03-2009, 11:57 PM

Check the (inherited) DesignMode property. If this is True, don't load the image.
This property won't work in the constructor, check it in OnLoad.

JeremyCAFE · 09-04-2009, 06:57 AM

Thank you. this is perfect for solving the issue.

JeremyCAFE · 09-04-2009, 08:50 AM

hmm, so the solution is not working if the control with the check is double embedded. (used on a parent control, in which that parent control is used on another control)

Code:

if(!DesignMode)
{
          bmpCardBackground = new Bitmap("tressure_bg.png");
}

Magos · 09-04-2009, 09:45 AM

Quote:

is not working

Being more specific would be helpful.

JeremyCAFE · 09-04-2009, 11:04 AM

Quote:

Originally Posted by Magos

Being more specific would be helpful.

I am getting the same error I was getting before on the top most parent now.

Control 1 (with loaded image) is put onto control 2.

Control 2 is put onto Form. Form cannot load and is giving the error shown in first post. Builds fine, just can't view it in the designer.

Magos · 09-04-2009, 12:56 PM

Try using a full path (C:\Folder1\Folder2\Image.png) instead of a relative that you use now.
Also you spell "treasure" as "tressure", typo or error?
You could also try another image, like a jpg. Perhaps your png is saved in a weird format that the bitmap class can't handle?
That's all I can think of now.

09-03-2009, 05:06 PM	#1
JeremyCAFE Registered User Join Date: Dec 2005 Posts: 51	Control with image loaded from file, cant view in designer I have a control that loads an image in the OnLoad and displays this image in OnPaint. However, when I try to use the control on a form, I can't view the form because of the following error: Parameter is not valid. at System.Drawing.Bitmap..ctor(String filename) at Card_Creator.Item_Preview.Item_Preview_Load(Object sender, EventArgs e) in C:\Users\Jeremy\Desktop\SVN\Source Code\Card Creator\Card Creator\Item Preview.cs:line 72 I have seen this issue a few times in the office with trying to reference config files that are loaded in. Is there a way to work around this so I can load something in and not have the designer barf on it? [Edit: Spelling]
JeremyCAFE is offline

09-03-2009, 11:57 PM	#2
Magos Confused Join Date: Sep 2001 Location: Sweden Posts: 3,125	Check the (inherited) DesignMode property. If this is True, don't load the image. This property won't work in the constructor, check it in OnLoad. __________________ MagosX.com Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime.
Magos is offline

09-04-2009, 06:57 AM	#3
JeremyCAFE Registered User Join Date: Dec 2005 Posts: 51	Thank you. this is perfect for solving the issue.
JeremyCAFE is offline

09-04-2009, 08:50 AM	#4
JeremyCAFE Registered User Join Date: Dec 2005 Posts: 51	hmm, so the solution is not working if the control with the check is double embedded. (used on a parent control, in which that parent control is used on another control) Code: if(!DesignMode) { bmpCardBackground = new Bitmap("tressure_bg.png"); }
JeremyCAFE is offline

09-04-2009, 12:56 PM	#7
Magos Confused Join Date: Sep 2001 Location: Sweden Posts: 3,125	Try using a full path (C:\Folder1\Folder2\Image.png) instead of a relative that you use now. Also you spell "treasure" as "tressure", typo or error? You could also try another image, like a jpg. Perhaps your png is saved in a weird format that the bitmap class can't handle? That's all I can think of now. __________________ MagosX.com Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime.
Magos is offline

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