create strings from 2d array of chars vb.net

I have a 2d array of chars and i need to start at (0,0) and creat a string and check it against some value then still then add another char to the first one and check it. I need to do that in every dirction. ex:

`array:

   B S W G E C Q
   W T W G E C Q
   D S W G E C Q
   Q W E G E C Q
   B S W H E C Q
   B S W G E O Q
   B S W G E C U`

value: first time B

next time BS

then bsw then BSWGECQ开发者_StackOverflow中文版

then BTWGEOU

then BW and so on and so on

say im at the H their are like 8 way i need to check

any help in this vb.net problem would be great thanks.

Can you go the other direction and check your string, character by character, to see if that character is in the corresponding column in the array?