private void btnUploadToDatabase_Click(object sender, EventArgs e)
        {
            try
            {
                InsertData insertdata = new InsertData();
                string     errorInfo  = insertdata.InsertDataIntoSQLServerUsingSQLBulkCopy(csv, TableName);
                if (errorInfo == "")
                {
                    MessageBox.Show("上传到数据库成功", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                else
                {
                    MessageBox.Show($"上传到数据库失败,{errorInfo}", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("上传到数据库失败,原因:" + ex.Message, "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
            frmMain frmmain = (frmMain)this.Owner;
            string  sql     = "select LIST,MACADDRESS,DESCRIPTION,VALIDFROM,VALIDTHRU from DhcpFilterStatus where STATUS !='deleting'";

            frmmain.dt = SqlHelpers.ExecuteDataTable(CommandType.Text, sql);
            frmmain.dgvData.DataSource = frmmain.dt;
            dgvFileData.DataSource     = null;
        }