水晶报表，点击查询后不刷新

Question

        private void btnSearch_Click(object sender, EventArgs e)
        {
            
            dataset.B_matter_qxSelect.Clear();
            adapter.Fill(dataset.B_matter_qxSelect, this.dateTimePicker1.Value.Year.ToString() + this.dateTimePicker1.Value.Month.ToString("#0") + this.dateTimePicker1.Value.Day.ToString("#0"), this.dateTimePicker2.Value.Year.ToString() + this.dateTimePicker2.Value.Month.ToString("#0") + this.dateTimePicker2.Value.Day.ToString("#0"),this.cmbdepartment.Text);
            qxday1.Parameter_ts_timeStart.CurrentValues.AddValue(this.dateTimePicker1.Value.Year.ToString() + this.dateTimePicker1.Value.Month.ToString("#0") + this.dateTimePicker1.Value.Day.ToString("#0"));
            qxday1.Parameter_ts_timeEnd.CurrentValues.AddValue(this.dateTimePicker2.Value.Year.ToString() + this.dateTimePicker2.Value.Month.ToString("#0") + this.dateTimePicker2.Value.Day.ToString("#0"));
            qxday1.Parameter_add_classname.CurrentValues.AddValue(this.cmbdepartment.Text); 
            qxday1.SetDataSource(dataset);
            qxday1.SetParameterValue("ts_timeStart", this.dateTimePicker1.Value.Year.ToString() + this.dateTimePicker1.Value.Month.ToString("#0") + this.dateTimePicker1.Value.Day.ToString("#0"));
            qxday1.SetParameterValue("ts_timeEnd", this.dateTimePicker2.Value.Year.ToString() + this.dateTimePicker2.Value.Month.ToString("#0") + this.dateTimePicker2.Value.Day.ToString("#0"));
            qxday1.SetParameterValue("add_classname", this.cmbdepartment.Text);
           
        }
在WINFORM中单击事件后，本页面中的水晶报表不刷新，请帮忙解决一下，谢谢