what is the use of Design patterns in .net

Question

Hi Every one can any one explain me what is the Design pattern and 
what is the use of Design patterns in .net 

Answer 1

Hii Kiran sir, Now i uploaded desighn what i need. i selects the location all files will display like tha. now can you update me how to do that.

Answer 2

Hi check these articles

http://www.c-sharpcorner.com/uploadfile/mahesh/openfiledialog-in-C-Sharp/ 

http://www.c-sharpcorner.com/uploadfile/mahesh/openfiledialog-in-C-Sharp/ 

http://www.c-sharpcorner.com/UploadFile/0f100d/storing-and-retrieving-text-file-using-sql-server-database-i/ 

Hope this helps you