How to sort a ASPxPivotGrid by clicking on a field value

The PivotGrid allows sorting by any column. To do this, right click any field value and select an appropriate field to sort by it. Sometimes it is possible to sort by any column by simply clicking on it. This example shows how to implement this behavior. You should create a template for field values to place a hyperlink (or a button) rather than a plain text.

[C#]
ASPxPivotGrid1.FieldValueTemplate=newFieldValueTemplate(ASPxPivotGrid1);

The FieldValueTemplate class should implement the ITemplate interface. We've replaced standard contents of a field value in the InstantiateIn method.

[C#]
publicclassFieldValueTemplate:ITemplate{   publicFieldValueTemplate(ASPxPivotGridpivotGrid){       this.pivotGrid=pivotGrid;   }   ASPxPivotGridpivotGrid;   protectedASPxPivotGridPivotGrid{get{returnpivotGrid;}}   #regionITemplateMembers   publicvoidInstantiateIn(Controlcontainer){       PivotGridFieldValueTemplateContainerc=(PivotGridFieldValueTemplateContainer)container;       HyperLinklink=newHyperLink();       link.Text=(string)c.Text;       link.NavigateUrl="#";       link.Attributes["onclick"]=GetOnClickHandler(c);       c.Controls.Add(link);       boolisSortedByColumn=GetIsSortedByColumn(c);       if(isSortedByColumn){           c.Controls.Add(newLiteralControl("&nbsp;*"));       }   }   boolGetIsSortedByColumn(PivotGridFieldValueTemplateContainerc){       List<PivotGridFieldPair>sortedFields=PivotGrid.Data.VisualItems.GetSortedBySummaryFields(c.ValueItem.IsColumn,c.ValueItem.Index);       boolisSortedByColumn=sortedFields!=null&&sortedFields.Count> 0;       returnisSortedByColumn;   }   stringGetOnClickHandler(PivotGridFieldValueTemplateContainerc){       StringBuilderres=newStringBuilder();       res.Append(pivotGrid.ClientInstanceName).Append(".PerformCallback('SC|");       res.Append(GetFieldIndex(c)).Append("|")           .Append(c.ValueItem.IsColumn).Append("|")           .Append(c.ValueItem.VisibleIndex).Append("|")           .Append(c.ValueItem.DataIndex);       res.Append("');");       returnres.ToString();   }   intGetFieldIndex(PivotGridFieldValueTemplateContainerc){       returnc.ValueItem.Field!=null?c.ValueItem.Field.Index:-1;   }   #endregion}

The GetOnClickHandler method returns a javascript code that will perform a ASPxPivotGrid's callback passing all required parameters to the server. On the server side, you should handle the CustomCallback event handler and apply sorting to it.

[C#]
   protectedvoidASPxPivotGrid1_CustomCallback(objectsender,PivotGridCustomCallbackEventArgse){       string[]args=e.Parameters.Split('|');       if(args[0]=="SC")           HandleSortByColumnClick((ASPxPivotGrid)sender,args);   }   voidHandleSortByColumnClick(ASPxPivotGridpivotGrid,string[]args){       intfieldIndex=int.Parse(args[1]),           visibleIndex=int.Parse(args[3]),           dataIndex=int.Parse(args[4]);       boolisColumn=bool.Parse(args[2]);       PivotAreaarea=GetArea(isColumn),           crossArea=GetCrossArea(isColumn);       PivotGridFielddataField;       List<PivotGridField>fields;       List<object>values;       GetFieldsAndValues(pivotGrid,fieldIndex,visibleIndex,dataIndex,area,           outdataField,outfields,outvalues);              SetSortByColumn(pivotGrid,crossArea,dataField,fields,values);   }

Sorting can be set by filling the SortBySummaryInfo structure. The BeginUpdate/EndUpdate method calls are necessary to prevent multiple data recalculations.

[C#]
   voidSetSortByColumn(ASPxPivotGridpivotGrid,PivotAreacrossArea,PivotGridFielddataField,List<PivotGridField>fields,List<object>values){       pivotGrid.BeginUpdate();       List<PivotGridField>crossFields=pivotGrid.GetFieldsByArea(crossArea);       for(inti= 0;i<crossFields.Count;i++){           crossFields[i].SortBySummaryInfo.Field=dataField;           crossFields[i].SortBySummaryInfo.Conditions.Clear();           for(intj= 0;j<values.Count;j++){               crossFields[i].SortBySummaryInfo.Conditions.Add(                   newPivotGridFieldSortCondition(fields[j],values[j]));           }       }       pivotGrid.EndUpdate();   }