حل شد
دم هرچی آدم باحال و با معرفته گرمحالا به یه مشکل توی دیتاگرید خوردم،
میخوام فیلدایی که از جداولم باهم مرتبتا تحت یه جدول توی دیتاگرید بهم نشون بده اما پیغامی که توی عکسه بهم نشون میده.

این کدمه:
void FillDataGrid()
{
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Ace.OLEDB.12.0 ;Data Source=" + Application.StartupPath + "\\GymDataBase.accdb");
DataSet ds = new DataSet();
OleDbDataAdapter da = new OleDbDataAdapter();
da.SelectCommand = new OleDbCommand();
da.SelectCommand.CommandType = CommandType.Text;
da.SelectCommand.CommandText = "SELECT CodMelli,RegDate,Pic,Nam,Family,Father,[Gender],BirthCity,BirthDate,GymName,AgeTypeStudent,Weight Student,[Tell],[Mobile],[Address],[E-Mail],NameOfCollegeOrSchool,StudingLevel,[Level],AverageScore,RecentlyMounth,DateOfPay,[Money],PayID,PayAll,OntimeOrNot,HozorDate,VaziyatHozor,B eltBelt,DateOfBelt,BeltPlace,BeltCertificateNum,Da teOfMatch,MatchPlace,AgeTypeHero,WeightHero,BeltHe ro,DegreeHero,MatchCertificateNum,[Province],DegreeInProvince,[Contry],DegreeInContry,BeltAccept,HomeWorkForm,StudCoapor ation,ParentCoaporation,SchoolVerification,ParentV erification,ParentPresentation,LeisureCamp,ProCamp ,MasterScore,OtherSuccesses,[Cup] FROM PresentOrAbsent INNER JOIN (Others INNER JOIN (Knowledge INNER JOIN (Hero INNER JOIN (Tuition INNER JOIN (Belt INNER JOIN Student ON Belt.ID = Student.CodMelli) ON Tuition.ID = Student.CodMelli) ON Hero.ID = Student.CodMelli) ON Knowledge.ID = Student.CodMelli) ON Others.ID = Student.CodMelli) ON PresentOrAbsent.ID = Student.CodMelli";



try
{
conn.Open();
da.SelectCommand.Connection = conn;
da.SelectCommand.ExecuteNonQuery();

da.Fill(ds, "Table");
dataGridView2.DataSource = ds;
dataGridView2.DataMember = "Table";


conn.Close();
}
catch (Exception e1)
{
MessageBox.Show(e1.Message);
}
}