protected void btnSubmit4_Click(object sender, EventArgs e)
{
// Initialize Data
InitData();
GridWorksheet sheet = GridWeb1.WorkSheets["PivotTable Report"];
GridPivotTable pivotTable = sheet.PivotTables[0];
// Sets field Caption property to be show in the report
pivotTable.Fields("Employee").DisplayName = txtEmployee.Text.Trim();
pivotTable.Fields("Product").DisplayName = txtCountry.Text.Trim();
// Paints PivotTable report
pivotTable.CalculateData();
}