error design mode in wpf

15y ago

Please refer the below image or simply you can do print screen and paste it into the reply /post window.

i know, but i don't upload image from my pc on the topic. how can i upload image to topic??

The most important peice of information that you need to provide here is the error message. Please ensure that you have imcluded the complete and accurate error message.

15y ago

If possible, please attach your form code and we couldn't see the error image also.