17-03-17, 06:28 PM
استبدل هذا الكود بالموجود معك في البرنامج ....
كود :
Public Sub searching()
Dim _SQL As String =
" SELECT COUNT(*) AS total, Nationalities.NationalitiesCaption, Depet.Depets, Qualifications.QualiCaption " &
" FROM (((Depet INNER JOIN " &
" Employees ON Depet.DepetID = Employees.Depets) INNER JOIN " &
" Nationalities ON Employees.EmpNatio = Nationalities.NationalitiesID) INNER JOIN " &
" Qualifications ON Employees.EmpConfig = Qualifications.QualiDI) " &
" GROUP BY Nationalities.NationalitiesCaption, Qualifications.QualiCaption, Depet.Depets "
Dim dt As New DataTable
Dim da As New OleDbDataAdapter(_SQL, con)
da.SelectCommand.Parameters.AddWithValue("?EmpNatio", ComboBox1.SelectedValue)
da.SelectCommand.Parameters.AddWithValue("?EmpConfig", ComboBox2.SelectedValue)
da.SelectCommand.Parameters.AddWithValue("?Depets", ComboBox3.SelectedValue)
da.Fill(dt)
DataGridView1.DataSource = dt
End Sub


