GDI+ Error in System.Drawing.Graphics.MeasureString

[Sudi]

My application populates a combobox with 3000+ items. When I select all the items in the list, I get the following error on postback of the page.

Is there a limit on the maximum number of items/characters I can display in the combobox?

[ExternalException (0x80004005): A generic error occurred in GDI+.]
System.Drawing.Graphics.MeasureString(String text, Font font, SizeF layoutArea, StringFormat stringFormat) +1593640
System.Drawing.Graphics.MeasureString(String text, Font font, SizeF layoutArea) +18
System.Drawing.Graphics.MeasureString(String text, Font font) +43
Telerik.Web.UI.RadComboBox.MeasureCheckedItemsText(String checkedItemsTexts) +188
Telerik.Web.UI.RadComboBox.OnPreRender(EventArgs e) +421
System.Web.UI.Control.PreRenderRecursiveInternal() +113
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Control.PreRenderRecursiveInternal() +222
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4297

[Peter Filipov]

Hello Sudi,

I have tested the described scenario and everything is working fine. Please test the attached project and try to modify it in order to reproduce the problem.

Regards,
Peter Filipov
Telerik

 

 

[Rimon Erez]

Hi Peter,

We modified your project to handle the exact data that our application binds to the dropdown. Unfortunately, we can't replicate the error this way. 

Are there any other reasons why the control could be exceeding the max GDI+ handles limit?

[Peter Filipov]

Hello Rimon,

We are not aware of such issue, that's why I have requested for a modification on the sample. Pleas let me know if you find out how to reproduce it. 

Regards,
Peter Filipov
Telerik

 

 

[Vivek]

Hello All,

I am also getting the below error on my application page where Stored Procedure is returning around 3500 records.

System.Runtime.InteropServices.ExternalException: A generic error occurred in GDI+.   
at System.Drawing.Graphics.MeasureString(String text, Font font, SizeF layoutArea, StringFormat stringFormat)    
at System.Drawing.Graphics.MeasureString(String text, Font font, SizeF layoutArea)    
at System.Drawing.Graphics.MeasureString(String text, Font font)    
at Telerik.Web.UI.RadComboBox.MeasureCheckedItemsText(String checkedItemsTexts)    
at Telerik.Web.UI.RadComboBox.OnPreRender(EventArgs e)    
at System.Web.UI.Control.PreRenderRecursiveInternal()    
at System.Web.UI.Control.PreRenderRecursiveInternal()   
at System.Web.UI.Control.PreRenderRecursiveInternal()    
at System.Web.UI.Control.PreRenderRecursiveInternal()    
at System.Web.UI.Control.PreRenderRecursiveInternal() 

But if I am altering the stored Proc to return top 3000 records it's working fine.

Could anyone please help me on this?

Regards,
Vivek

[Peter Filipov]

Hi Vivek,

Could you test your project with Q1.2015. The measuring algorithm of the checked items is changed and that issue should not appear.

Regards,
Peter Filipov
Telerik

 

 

[Vivek]

Hi Peter,

Thanks for the update...

Could you please let me know from where I can download the Telerik.Web.UI.dll for Q1.2015 and also could you please let me know if updating this will impact the existing UI?

Regards,

Vivek

[Peter Filipov]

Hello Vivek,

You need to log into your profile and download it from there(look for SP Q1 2015). There should be no major differences in the appearance.

Regards,
Peter Filipov
Telerik

 

 

[Vivek]

Thanks Peter...

 One more query before proceeding with download of SP Q1 2015 that currently we are using the Telerik.Web.UI.dll with attached details so there will be no impact and no major changes if i will upgrade this from Q1 2015.

 

Regards,

Vivek

[Peter Filipov]

Hi Videk,

In the ticket info it is pointed that your are using Q3 2014. That's why I have suggested you to update. 
For case it is 4 years difference and we have done many improvements and bug fixes in our code, so it is possible to have some differences in your app which must be repaired. My suggestion is to update as soon as you could and try to stick to the latest versions of our product in order to avoid big migrations as this in the future. The benefit will be visible since we are trying to improve out products to keep the count of the bugs to minimum.

Regards,
Peter Filipov
Telerik