how to draw a table in richtextbox

Hi try the below link

https://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=63675&lngWId=1

You can also below component

https://www.microsoft.com/en-us/download/details.aspx?id=7105

Create a string in Rich Text Format to include complete table structure and assign this string to RTF property of RichTextBox control, For code and clarity check the link below.

 

http://www.dotnetstuffs.com/how-to-create-table-in-richtextbox-using-c-sharp/