Passing information between forms

I am trying to pass my grid information from one form (frmSearc) to another form (frmMemberView) but when I do I get an error stating 'Test.frmMemberView.membersBindingSource' is inaccessible due to it protection.

this is a segment of my code:

public void memberDataGridView_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)

try

int memNum = 0;

if (this.membersBindingSource.Position > -1)

TrainingDataSet.MembersRow row = default(TrainingDataSet.MembersRow);

row = (TrainingDataSet.MembersRow)((DataRowView)this.membersBindingSource.Current).Row;

membersBindingSource.Filter = " memberid= '" + memNum + "'";

memView.Show();

Thank you in advanced