small programe based on asp.net,c#,ado.net

public static bool Insert_File(string FileNo, string CUSTOMER_NAME, string ProjectName, string STATUS,string date,string ins)
    {
        try
        {
            string stinsert = "Insert into File (FileNo,CUSTOMER_NAME,ProjectName,STATUS,IDate,InsertedBy) values (@FileNo,@CUSTOMER_NAME,@ProjectName,@STATUS,@date,@ins)";
            //string stinsert1 = "Insert into FileCord (FileNo,CUSTOMER_NAME,ProjectName,STATUS,IDate) values (@FileNo,@CUSTOMER_NAME,@ProjectName,@STATUS,@date)";

            OleDbCommand cmdinsert = new OleDbCommand(stinsert, GetConnection());

            cmdinsert.Parameters.AddWithValue("FileNo", FileNo);
            cmdinsert.Parameters.AddWithValue("CUSTOMER_NAME", CUSTOMER_NAME);
            cmdinsert.Parameters.AddWithValue("ProjectName", ProjectName);
            cmdinsert.Parameters.AddWithValue("STATUS", STATUS);
            cmdinsert.Parameters.AddWithValue("date",date);
            cmdinsert.Parameters.AddWithValue("ins",ins);
            cmdinsert.ExecuteNonQuery();
            cmdinsert.Connection.Close();
            return true;

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
            return false;
        }
    }

public static bool Update_Received(string FileNo, string ReqControlNo, string ReceiveDate, string Remarks, string received)
    {
        try
        {
            string s1 = "Update Issue set ReceivedDate='" + ReceiveDate + "',ReceivedRemarks= '" + Remarks + "',ReceiveTime='" + received + "' where FileNo='" + FileNo + "' AND ReqControlNo='" + ReqControlNo + "'";
            OleDbCommand cmd1 = new OleDbCommand(s1, GetConnection());
            cmd1.ExecuteNonQuery();
            cmd1.Connection.Close();
            string stts = "Available";
            string st3 = "Update File set STATUS='" + stts + "' where FileNo='" + FileNo + "' ";
            OleDbCommand cmd11 = new OleDbCommand(st3, GetConnection());
            cmd11.ExecuteNonQuery();
            cmd11.Connection.Close();
 
            return true;
 
        }
        catch (Exception ex)
        {
 
            System.Windows.Forms.MessageBox.Show(ex.ToString());
            return false;
        }