public void RefreshDG()
{
Admin Show = new Admin();
dgvAllContract.DataSource = Show.ContractDGV();
dgvAllContract.DataMember = "Contracts";
dgOngoing.DataSource = Show.GetOngoingContractDGV();
dgOngoing.DataMember = "OngoingContracts";
dgCompleted.DataSource = Show.GetCompletedContractDGV();
dgCompleted.DataMember = "CompletedContracts";
dgExtended.DataSource = Show.GetExtendedContractDGV();
dgExtended.DataMember = "ExtendedContracts";
dgSearchContract.DataSource = Show.GetSearchContractDGV();
dgSearchContract.DataMember = "SearchContracts";
dgEditContract.DataSource = Show.GetEditContractDGV();
dgEditContract.DataMember = "EditContracts";
}