multi forms in one c# project

hi

please....... could any one help me in this

in my project i have a multi forms

each are public but in the same namespace

what i face is i need to set a value in my setting form

and then use this value in other one

for mor explination

i use a open file dialog to get the path of some file

which i wana to load in the other form in the loading form operation

i try to set the string as apublic variable but that work in the same class even though i try to make the other form as an internal class also it dosent work

i thing i need some interface or may be structs but realy i never use them befor if you have any idea to help me or an

answer to my question please reply

and if the answer is using a structs please explain to my how to use it

since throw all my searching about this topic i was faced with data grid

but i dont understand how its related to

another i dea im working throw know tell i see your reply is trying to use a data set for those values and use sql query in setting the values and getting it

please would any one help me on this!!!!!! and

accept my respect